Auxiliary device

Abstract

It is possible to use it for drawing lines of a batter's box in baseball or softball, and provide an auxiliary tool with simpler pre-use operations than before. 【Solution means】An auxiliary tool 1 that can be used for drawing lines in baseball or softball includes a sheet-shaped main body 2. In the main body 2, a right batter's box area 10, a home base area 20, and a left batter's box area 30 are arranged in parallel in order. In the home base area 20, a reference portion 21 for aligning with the home base is provided. At the four corners of the right batter's box area 10 set in a rectangular shape when viewed in the thickness direction of the main body 2, first reference holes 11 penetrating the main body 2 are respectively provided. At the four corners of the left batter's box area 30 set in a rectangular shape when viewed in the thickness direction of the main body 2, second reference holes 31 penetrating the main body 2 are respectively provided. The main body 2 is configured to be rollable or foldable.

Description

Technical Field

[0001] The present invention relates to an auxiliary tool that can be used for drawing lines in baseball or softball.

Background Art

[0002] Conventionally, an auxiliary tool that can be used for drawing lines in a batter's box for baseball or the like is known. For example, the base hole line drawing auxiliary tool disclosed in Patent Document 1 includes a right-handed batter's box frame, a left-handed batter's box frame, a home base frame, and connecting hinges provided on each of the right-handed batter's box, the left-handed batter's box, and the home base frame. Each of the right-handed batter's box, the left-handed batter's box, and the home base frame can be folded by the connecting hinges provided thereon.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the base hole line drawing auxiliary tool of Patent Document 1 requires an operation of expanding each of the folded right-handed batter's box, left-handed batter's box, and home base frame before using it for line drawing on the ground or the like. Therefore, this pre-use operation may be troublesome for the user.

[0005] The present invention has been made in view of such a point, and an object thereof is to provide an auxiliary tool that can be used for drawing lines in a batter's box for baseball or softball and that is simpler in pre-use operations than conventional ones.

Means for Solving the Problems

[0006] In order to achieve the above object, the present invention provides an auxiliary tool that can be used for drawing lines in baseball or softball, which includes a sheet-shaped main body portion. In the main body portion, a right batter's box area portion, a home base area portion, and a left batter's box area portion are arranged side by side in order. In the home base area portion, A sheet material made of transparent or translucent material is provided to cover the home base and enable visual recognition of the home base. Through the sheet material, the a reference portion for aligning with the home base is provided. At the four corners of the right batter's box area portion set in a rectangular shape when viewed in the thickness direction of the main body portion, first reference holes penetrating the main body portion are respectively provided. At the four corners of the left batter's box area portion set in a rectangular shape when viewed in the thickness direction of the main body portion, second reference holes penetrating the main body portion are respectively provided. The main body portion is configured to be woundable or foldable.

[0007] According to the present invention configured as described above, after aligning the reference portion of the auxiliary tool laid on the ground or the like with the home base, for example, driving point piles inserted into each of the first reference hole and the second reference hole into the ground or the like, and then, after removing the auxiliary tool, drawing a line to connect each point pile enables the drawing of lines for the right batter's box and the left batter's box. Further, since the auxiliary tool can be used simply by spreading the wound or folded main body portion before using it for line drawing, the work before use can be made simpler than before.

[0008] In the present invention, preferably, The sheet material is set in a rectangular shape when viewed in the thickness direction of the main body portion, and is provided on the main body portion so as to block a central hole portion formed through the central portion in the longitudinal direction of the main body portion. The reference portion is provided in a home base shape inside the sheet material so that the contour of the home base and the reference portion can be aligned while visually recognizing the contour of the home base and the reference portion through the sheet material. The home base region portion is transparent or translucent, and the reference portion is provided in a home base shape when viewed in the thickness direction of the main body portion.

[0009] According to the present invention configured as described above, since the home base area portion is transparent or translucent and the reference portion is provided in a home base shape when viewed in the thickness direction of the main body portion, the user can align the reference portion of the auxiliary tool with the home base while visually recognizing the home base installed on the ground or the like. Thereby, the alignment of the reference portion with respect to the home base can be easily performed.

[0010] In the present invention, preferably, the right batter's box area portion has a first short side portion and a second short side portion facing the first short side portion, and the left batter's box area portion has a third short side portion corresponding to the first short side portion and a fourth short side portion facing the third short side portion and corresponding to the second short side portion. A third reference hole penetrating the main body portion is provided in the first short side portion, a fourth reference hole penetrating the main body portion is provided in the second short side portion, a fifth reference hole penetrating the main body portion is provided in the third short side portion, and a sixth reference hole penetrating the main body portion is provided in the fourth short side portion. The first interval between the third reference hole and the fifth reference hole and the second interval between the fourth reference hole and the sixth reference hole are set to a length corresponding to the left-right width of the catcher's box. According to the present invention configured as described above, after aligning the reference portion of the auxiliary tool laid on the ground or the like with the home base, for example, driving the pointed piles inserted into the fourth reference hole and the sixth reference hole respectively into the ground or the like, and then changing the position of the auxiliary tool so that the third reference hole is located at the position of the pointed pile corresponding to the fourth reference hole and the fifth reference hole is located at the position of the pointed pile corresponding to the sixth reference hole. After driving the pointed piles inserted into the fourth reference hole and the sixth reference hole of the main body portion at the changed position into the ground or the like, the main body portion is removed. Then, by drawing a line so as to connect between the pointed pile corresponding to the fourth reference hole at the position of the main body portion before the change and the pointed pile corresponding to the fourth reference hole at the position of the main body portion after the change, and between the pointed pile corresponding to the sixth reference hole at the position of the main body portion before the change and the pointed pile corresponding to the sixth reference hole at the position of the main body portion after the change, the line drawing of the catcher's box becomes possible. When the main body portion is moved so that the first short side portion and the second short side portion overlap and the third short side portion and the fourth short side portion overlap, lines connecting the third reference hole and the fourth reference hole after the movement and lines connecting the fifth reference hole and the sixth reference hole respectively form the left and right lines of the catcher box.

[0011]

[0012] In the present invention, preferably, a string-like member having a length corresponding to the radius of the dirt circle is further provided, and one end of the string-like member is attached to the reference portion.

[0013] According to the present invention configured as described above, since one end of the string-like member having a length corresponding to the radius of the dirt circle is attached to the reference portion, for example, with the lower end of the rod attached to the other end of the string-like member grounded to the ground or the like, by moving the rod so as to form an arc-shaped groove on the ground or the like in a plan view with one end of the string-like member as the rotation center, a groove serving as a mark for drawing the line of the dirt circle can be easily formed on the ground or the like.

Effect of the Invention

[0014] According to the present invention, it is possible to be used for drawing the lines of the batter's box in baseball or softball, and it is possible to provide an auxiliary tool that is simpler in operation before use than in the past.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0016] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiments is merely illustrative in nature.

[0017] Fig. 1 shows an auxiliary tool 1 according to an embodiment of the present invention. The auxiliary tool 1 is in the form of a scroll and includes a main body portion 2, a shaft portion 3, an eight-fold portion 4, and a winding end portion 5. In this embodiment, the auxiliary tool 1 can be used for drawing lines such as a batter's box for junior baseball.

[0018] The main body portion 2 is in the form of a sheet and is configured to be wound. Further, the main body portion 2 is made of, for example, ester canvas.

[0019] Fig. 1 shows a state where the main body portion 2 is unfolded, Fig. 2(a) shows a state where the main body portion 2 is wound halfway, and Fig. 2(b) shows a state where the main body portion 2 is wound to the end. It should be noted that the auxiliary tool 1 is laid on the ground in a posture where the first surface 2a is located on the upper side and the second surface 2b is located on the lower side (the ground side of the ground) when the main body portion 2 shown in Fig. 1 is unfolded. And the auxiliary tool 1 is such that the first surface 2a is located on the outside (exposed) and the second surface 2b is located on the inside (not exposed) when the main body portion 2 shown in Fig. 2(b) is wound to the end.

[0020] In the present embodiment, the longitudinal direction of the main body 2 in the state where the main body 2 shown in FIG. 1 is expanded is defined as the "longitudinal direction", and the direction orthogonal to the longitudinal direction is defined as the "orthogonal direction".

[0021] On the first surface 2a of the main body 2, a right batter's box area 10, a home base area 20, and a left batter's box area 30 are provided. The right batter's box area 10, the home base area 20, and the left batter's box area 30 are arranged side by side in the longitudinal direction of the main body 2 in the state where the main body 2 is expanded. In other words, the right batter's box area 10 is provided on one longitudinal side of the home base area 20. On the other hand, the left batter's box area 30 is provided on the other longitudinal side of the home base area 20.

[0022] In the present embodiment, the right batter's box area 10 and the left batter's box area 30 have the same size and shape as the batter's box defined by the official baseball rules and the like. For example, the long side is 1.5 meters and the short side is 0.9 meters.

[0023] The right batter's box area 10 is set in a rectangular shape when viewed in the thickness direction of the main body 2. The right batter's box area 10 includes a first short side portion 10a, a second short side portion 10b, a first long side portion 10c, and a second long side portion 10d that define a substantially rectangular frame-shaped outer edge. In the present embodiment, the first short side portion 10a, the second short side portion 10b, the first long side portion 10c, and the second long side portion 10d are formed by sticking an adhesive tape to the first surface 2a of the main body 2.

[0024] The first short side portion 10a and the second short side portion 10b extend in the longitudinal direction. The first short side portion 10a and the second short side portion 10b are arranged opposite to each other so as to be aligned in the orthogonal direction. The first short side portion 10a defines the outer edge on one orthogonal side of the right batter's box area 10. The second short side portion 10b defines the outer edge on the other orthogonal side of the right batter's box area 10.

[0025] The first long side portion 10c and the second long side portion 10d extend in the orthogonal direction. Also, the first long side portion 10c and the second long side portion 10d are arranged to face each other so as to be aligned in the longitudinal direction. The first long side portion 10c defines the outer edge on one side in the longitudinal direction in the right batter's box region portion 10. The second long side portion 10d defines the outer edge on the other side in the longitudinal direction in the right batter's box region portion 10.

[0026] The first long side portion 10c is provided so as to connect the longitudinal direction one side end of the first short side portion 10a and the longitudinal direction one side end of the second short side portion 10b. In other words, one end in the orthogonal direction of the first long side portion 10c is connected to the longitudinal direction one side end of the first short side portion 10a, and the other end in the orthogonal direction of the first long side portion 10c is connected to the longitudinal direction one side end of the second short side portion 10b.

[0027] The second long side portion 10d is provided so as to connect the longitudinal direction other side end of the first short side portion 10a and the longitudinal direction other side end of the second short side portion 10b. In other words, one end in the orthogonal direction of the second long side portion 10d is connected to the longitudinal direction other side end of the first short side portion 10a, and the other end in the orthogonal direction of the second long side portion 10d is connected to the longitudinal direction other side end of the second short side portion 10b.

[0028] Also, at the four corners of the right batter's box region portion 10, first reference holes 11 penetrating the main body portion 2 are respectively provided. Further, the right batter's box region portion 10 has a third reference hole 12 penetrating the main body portion 2 provided in the first short side portion 10a and a fourth reference hole 13 penetrating the main body portion 2 provided in the second short side portion 10b facing the first short side portion 10a. In the present embodiment, the third reference hole 12 and the fourth reference hole 13 are provided at positions closer to the second long side portion 10d than the first long side portion 10c in the longitudinal direction.

[0029] In the present embodiment, studs H are attached to the first reference hole 11, the third reference hole 12, and the fourth reference hole 13.

[0030] The home base area portion 20 is set to be rectangular when viewed in the thickness direction of the main body portion 2. In the present embodiment, the home base area portion 20 is set to have an area smaller than that of the right batter's box area portion 10 when viewed in the thickness direction.

[0031] The home base area portion 20 includes a transparent sheet material 20a. The transparent sheet material 20a is attached so as to close a central hole portion 2c formed through the central portion in the longitudinal direction of the main body portion 2. In the present embodiment, the portion of the main body portion 2 excluding the home base area portion 20 is composed of an opaque sheet material (for example, ester canvas).

[0032] Further, the home base area portion 20 is provided with a reference portion 21 for aligning with the home base. The reference portion 21 is provided in the shape of a home base when viewed in the thickness direction of the main body portion 2. In the present embodiment, the reference portion 21 forms a frame shape when viewed in the thickness direction of the main body portion 2, and its contour is provided in the shape of a home base. Further, the contour of the reference portion 21 is made to coincide with the contour of the home base defined by official baseball rules and the like.

[0033] Further, a through hole 22 is provided at the other end in the direction orthogonal to the reference portion 21. In the present embodiment, a stud H is attached to the through hole 22.

[0034] One end portion of a string-like member 40 having a length corresponding to the radius of the dirt circle (for example, 3.3 meters) is attached to the through hole 22. An annular ring member 41 is provided at the other end portion of the string-like member 40.

[0035] The left batter's box area portion 30 is set to be rectangular when viewed in the thickness direction of the main body portion 2. Also, the left batter's box area portion 30 is set to have the same area as the right batter's box area portion 10 when viewed in the thickness direction. Further, the left batter's box area portion 30 includes a third short side portion 30a, a fourth short side portion 30b, a third long side portion 30c, and a fourth long side portion 30d that define an outer edge in a substantially rectangular frame shape.

[0036] In this embodiment, an adhesive tape is attached to the first surface 2a of the main body 2, whereby the third short side portion 30a, the fourth short side portion 30b, the third long side portion 30c, and the fourth long side portion 30d are formed.

[0037] The third short side portion 30a and the fourth short side portion 30b extend in the longitudinal direction. Also, the third short side portion 30a corresponding to the first short side portion 10a and the fourth short side portion 30b corresponding to the second short side portion 10b are arranged to face each other so as to be aligned in the orthogonal direction. The third short side portion 30a defines the outer edge on one side in the orthogonal direction in the left batter box region portion 30. The fourth short side portion 30b defines the outer edge on the other side in the orthogonal direction in the left batter box region portion 30.

[0038] The third long side portion 30c and the fourth long side portion 30d extend in the orthogonal direction. Also, the third long side portion 30c and the fourth long side portion 30d are arranged to face each other so as to be aligned in the longitudinal direction. The third long side portion 30c defines the outer edge on one side in the longitudinal direction in the left batter box region portion 30. The fourth long side portion 30d defines the outer edge on the other side in the longitudinal direction in the left batter box region portion 30.

[0039] The third long side portion 30c is provided so as to connect the longitudinal direction one side end of the third short side portion 30a and the longitudinal direction one side end of the fourth short side portion 30b. In other words, one end in the orthogonal direction of the third long side portion 30c is connected to the longitudinal direction one side end of the third short side portion 30a, and the other end in the orthogonal direction of the third long side portion 30c is connected to the longitudinal direction one side end of the fourth short side portion 30b.

[0040] The fourth long side portion 30d is provided so as to connect the longitudinal direction other side end of the third short side portion 30a and the longitudinal direction other side end of the fourth short side portion 30b. In other words, one end in the orthogonal direction of the fourth long side portion 30d is connected to the longitudinal direction other side end of the third short side portion 30a, and the other end in the orthogonal direction of the fourth long side portion 30d is connected to the longitudinal direction other side end of the fourth short side portion 30b.

[0041] In addition, in the left batter's box area 30, second reference holes 31 penetrating the main body 2 are provided at the four corners respectively. Further, the left batter's box area 30 has a fifth reference hole 32 penetrating the main body 2 provided in the third short side portion 30a and a sixth reference hole 33 penetrating the main body 2 provided in the fourth short side portion 30b facing the third short side portion 30a. In the present embodiment, the fifth reference hole 32 and the sixth reference hole 33 are provided at positions closer to the third long side portion 30c than the fourth long side portion 30d in the longitudinal direction.

[0042] The first interval between the third reference hole 12 and the fifth reference hole 32 and the second interval between the fourth reference hole 13 and the sixth reference hole 33 are set to lengths corresponding to the left - right width of the catcher's box. The left - right width of the catcher's box is, for example, 0.901 meters.

[0043] In the present embodiment, dowels H are attached to the second reference holes 31, the fifth reference holes 32, and the sixth reference holes 33.

[0044] Further, on the main body 2, a first foul - line reference line portion 45 and a second foul - line reference line portion 46 are further provided. The first foul - line reference line portion 45 extends obliquely so as to be located on one side in the longitudinal direction as it goes in one side in the orthogonal direction from the first short side portion 10a of the right batter's box area 10. The second foul - line reference line portion 46 extends obliquely so as to be located on the other side in the longitudinal direction as it goes in one side in the orthogonal direction from the third short side portion 30a of the left batter's box area 30.

[0045] Further, on the main body 2, a first catcher's - box line 47 and a second catcher's - box line 48 are further provided. The first catcher's - box line 47 extends in one side in the orthogonal direction from the fourth reference hole 13. The second catcher's - box line 48 extends in one side in the orthogonal direction from the sixth reference hole 33.

[0046] In this embodiment, adhesive tape is attached to the first surface 2a of the main body 2 to form a reference line portion 45 for the first foul line, a reference line portion 46 for the second foul line, a first catcher box line 47, and a second catcher box line 48.

[0047] The shaft portion 3 is rod-shaped and is inserted into a first cylindrical portion 2d formed at the other longitudinal end of the main body portion 2. As shown in Figures 2(a) and 2(b), the shaft portion 3 is configured to become a core of the assisting tool 1 when the main body portion 2 is wound.

[0048] The eight-ply portion 4 is rod-shaped and is inserted into a second cylindrical portion 2e formed at one end of the main body 2 in the longitudinal direction.

[0049] The winding thread part 5 is belt-shaped, and one end of the winding thread part 5 is attached to one longitudinal end of the main body part 2. As shown in Fig. 2(b), the winding thread part 5 is used to tie the main body part 2 when the main body part 2 is in a wound state.

[0050] Next, a method of using the assisting device 1 will be described with reference to Figs. 3 to 6. In this embodiment, it is assumed that a home base 70 is installed on the ground in advance. Each line is drawn using a line car (not shown) capable of drawing white lines.

[0051] As shown in Fig. 3(a), the user draws a first base foul line 71 and a third base foul line 72. At this time, there are set areas between the first base foul line 71 and home base 70, and between the third base foul line 72 and home base 70 where no lines are drawn.

[0052] Next, the user of the support device 1 unfolds the main body 2 and lays it on the ground. At that time, the user lays it so that the first surface 2a of the main body 2 is located on the upper side and the second surface 2b of the main body 2 is located on the lower side.

[0053] Then, as shown in FIG. 3(b), the user aligns the reference portion 21 with the home base 70 while visually recognizing the home base 70 installed on the ground so that the contour of the reference portion 21 coincides with the contour of the home base 70. At this time, the user positions the reference portion 21 with the home base 70 such that the third base fair line 72 drawn on the ground is located on the extension line of the first base fair line reference line portion 45 of the main body portion 2, and the first base fair line 71 drawn on the ground is located on the extension line of the second base fair line reference line portion 46 of the main body portion 2. After the alignment, the user drives the point stake S inserted into each of the first reference hole 11, the second reference hole 31, the fourth reference hole 13, and the sixth reference hole 33 into the ground.

[0054] Next, with the lower end of the rod 75 attached to the ring member 41 of the string-like member 40 grounded on the ground, the user moves the rod so as to form an arc-shaped groove on the ground with one end of the string-like member 40 as the center of rotation in plan view. Thereby, a groove 76 serving as a mark for drawing the line of the dirt circle is formed on the ground (see FIG. 3(c)).

[0055] Furthermore, as shown in FIG. 4(a), the user changes the position of the main body portion 2 (auxiliary tool 1) such that the third reference hole 12 is located at the position of the point stake S corresponding to the fourth reference hole 13, and the fifth reference hole 32 is located at the position of the point stake S corresponding to the sixth reference hole 33. At this time, the first reference hole 11 located on one longitudinal side of the third reference hole 12 is located at the position of the point stake S corresponding to the first reference hole 11 located on one longitudinal side of the fourth reference hole 13, and the second reference hole 31 located on the other longitudinal side of the fifth reference hole 32 is located at the position of the point stake S corresponding to the second reference hole 31 located on the other longitudinal side of the sixth reference hole 33, and the position of the main body portion 2 (auxiliary tool 1) is adjusted.

[0056] Then, as shown in FIG. 4(b), the user drives the point stake S inserted into each of the fourth reference hole 13 and the sixth reference hole 33 of the main body portion 2 at the changed position into the ground. After that, the user removes the main body portion 2 (auxiliary tool 1).

[0057] Next, as shown in FIG. 5(a), the user draws a line so as to connect the point pile S driven at the position corresponding to the first reference hole 11 on the ground, whereby the right batter's box 81 is formed on the ground. Further, as shown in FIG. 5(a), the user draws a line so as to connect the point pile S driven at the position corresponding to the second reference hole 31 on the ground, whereby the left batter's box 82 is formed on the ground.

[0058] Furthermore, as shown in FIG. 5(b), the user draws a line so as to connect between the point pile S corresponding to the fourth reference hole 13 at the position of the main body portion 2 before the change and the point pile S corresponding to the fourth reference hole 13 at the position of the main body portion 2 after the change, and between the point pile S corresponding to the sixth reference hole 33 at the position of the main body portion 2 before the change and the point pile S corresponding to the sixth reference hole 33 at the position of the main body portion 2 after the change, whereby the left and right lines of the catcher's box 83 are formed on the ground.

[0059] Then, as shown in FIG. 5(c), the user draws a line along the groove 76, whereby the dirt circle 85 is formed on the ground.

[0060] As described above, according to the present embodiment, after aligning the reference portion 21 of the auxiliary tool 1 laid on the ground or the like with the home base 70, for example, the point piles S inserted into the first reference hole 11 and the second reference hole 31 are driven into the ground or the like, and then, after removing the auxiliary tool 1, a line is drawn so as to connect the respective point piles S, whereby the lines of the right batter's box 81 and the left batter's box 82 can be drawn. Further, since the auxiliary tool 1 can be used for line drawing only by spreading the wound main body portion 2 before using it for line drawing, the work before use can be simplified as compared with the prior art.

[0061] In addition, since the home base area portion 20 is transparent and the reference portion 21 is provided in a home base shape when viewed in the thickness direction of the main body portion 2, the user can align the reference portion 21 of the auxiliary tool 1 with the home base 70 while visually recognizing the home base 70 installed on the ground or the like. Thereby, the alignment of the reference portion 21 with respect to the home base 70 can be easily performed.

[0062] Also, after aligning the reference portion 21 of the auxiliary tool 1 laid on the ground or the like with the home base 70, for example, drive the point pile S inserted into each of the fourth reference hole 13 and the sixth reference hole 33 into the ground or the like. Then, change the position of the main body portion 2 of the auxiliary tool 1 so that the third reference hole 12 is located at the position of the point pile S corresponding to the fourth reference hole 13 and the fifth reference hole 32 is located at the position of the point pile S corresponding to the sixth reference hole 33. After driving the point pile S inserted into each of the fourth reference hole 13 and the sixth reference hole 33 of the main body portion 2 at the changed position into the ground or the like, remove the main body portion 2. Then, between the point pile S corresponding to the fourth reference hole 13 at the position of the main body portion 2 before the change and the point pile S corresponding to the fourth reference hole 13 at the position of the main body portion 2 after the change, and between the point pile S corresponding to the sixth reference hole 33 at the position of the main body portion 2 before the change and the point pile S corresponding to the sixth reference hole 33 at the position of the main body portion 2 after the change, by performing line drawing to connect them, line drawing of the catcher box 83 becomes possible.

[0063] In addition, since one end portion of the string-like member 40 having a length corresponding to the radius of the dirt circle 85 is attached to the reference portion 21, for example, with the lower end of the rod 75 attached to the other end portion of the string-like member 40 grounded on the ground or the like, by moving the rod 75 so as to form an arc-shaped groove on the ground or the like with one end portion of the string-like member 40 as the rotation center in a plan view, the groove 76 serving as a mark for line drawing of the dirt circle 85 can be easily formed on the ground or the like.

[0064] In addition, the main body 2 of the auxiliary tool 1 is wound such that the first surface 2a is positioned on the outside and the second surface 2b is positioned on the inside. As a result, when the auxiliary tool 1 is laid on the ground, the second surface 2b, which is located on the ground side, in other words, the surface that is likely to be adhered to and soiled by soil or the like, is positioned on the inside. Therefore, when the auxiliary tool 1 after use is loaded and transported in the luggage compartment of a vehicle or the like, it is possible to prevent the luggage compartment or the like from being soiled by soil or the like.

[0065] Also, during a baseball game or practice, when sudden rain falls and the game or the like is interrupted, by laying the auxiliary tool 1 in a state where the main body 2 is unfolded so as to cover the home base 70, the right batter's box 81, and the left batter's box 82 on the ground, it is possible to prevent the home base 70, the right batter's box 81, and the left batter's box 82 from becoming muddy due to rain. As a result, after the rain stops, the baseball game or the like can be resumed promptly. Therefore, it is preferable that the main body 2 of the auxiliary tool 1 has water repellency, water resistance, or waterproofness.

[0066] In the present embodiment, an example in which the main body 2 is configured to be woundable has been described. However, the main body 2 may be configured to be foldable. For example, as shown in Fig. 6(a), after folding the main body 2 at the center in the longitudinal direction so that the first surface 2a is positioned on the outside, it may be further folded at the center in the orthogonal direction as shown in Fig. 6(b). By doing so, the auxiliary tool 1 can be used for line drawing simply by unfolding the main body 2 that is folded before use for line drawing, so that the work before use can be simplified compared to the conventional method.

[0067] In the present embodiment, an example in which the main body 2 is wound such that the first surface 2a is positioned on the inside has been described. However, it may be wound such that the first surface 2a is positioned on the outside.

[0068] In addition, in the present embodiment, an example has been described in which the right batter's box area portion 10, the home base area portion 20, and the left batter's box area portion 30 are arranged in parallel in this order in the longitudinal direction of the main body portion 2. However, the right batter's box area portion 10, the home base area portion 20, and the left batter's box area portion 30 may be arranged in parallel in this order in the orthogonal direction orthogonal to the longitudinal direction of the main body portion 2.

[0069] In addition, in the present embodiment, an example has been described in which the first short side portion 10a, the second short side portion 10b, the first long side portion 10c, the second long side portion 10d, the third short side portion 30a, the fourth short side portion 30b, the third long side portion 30c, the fourth long side portion 30d, the first foul line reference line portion 45, the second foul line reference line portion 46, the first catcher's box line 47, and the second catcher's box line 48 are formed by attaching an adhesive tape to the first surface 2a of the main body portion 2. However, a tape other than the adhesive tape may be used, or painting or sewing may be performed instead of attaching the adhesive tape, or the first short side portion 10a or the like may not be formed.

[0070] In addition, in the present embodiment, an example has been described in which the first short side portion 10a, the second short side portion 10b, the first long side portion 10c, and the second long side portion 10d are provided in the right batter's box area portion 10, and the third short side portion 30a, the fourth short side portion 30b, the third long side portion 30c, and the fourth long side portion 30d are provided in the left batter's box area portion 30. However, instead of these, another cloth or the like may be pasted or painted so that the right batter's box area portion 10 and the left batter's box area portion 30 can be visually distinguished from other areas in the main body portion 2.

[0071] In addition, in the present embodiment, an example has been described in which the main body portion 2 includes the third reference hole 12, the fourth reference hole 13, the fifth reference hole 32, and the sixth reference hole 33. However, the main body portion 2 may not include the third reference hole 12, the fourth reference hole 13, the fifth reference hole 32, and the sixth reference hole 33.

[0072] Also, in the present embodiment, although the main body 2 has been described using an example in which it is made of ester canvas, as long as it can be wound or folded, it may be made of materials other than ester canvas (for example, tarpaulin, polyethylene).

[0073] Also, in the present embodiment, although an example in which the first reference hole 11, the second reference hole 31, the third reference hole 12, the fourth reference hole 13, the fifth reference hole 32, the sixth reference hole 33, and the through hole 22 are provided with the rivet H has been described, it may not be provided with the rivet H.

[0074] Also, in the present embodiment, although the home base region portion 20 has been described using an example in which it is transparent (for example, the transparent sheet material 20a), it may be translucent (for example, a translucent sheet material). By doing so, since the home base region portion 20 is translucent and the reference portion 21 is provided in a home base shape when viewed in the thickness direction of the main body 2, the user can align the reference portion 21 with the home base 70 while visually recognizing the home base 70 installed on the ground or the like. Thereby, the alignment of the reference portion 21 with respect to the home base 70 can be easily performed.

[0075] Also, in the present embodiment, although the home base region portion 20 has been described using an example in which it is transparent, it may be opaque. In this case, for example, it is preferable that a through hole for a reference portion (for example, a through hole for a reference portion having a home base-shaped hole shape when viewed in the thickness direction of the main body 2) that can be aligned with the home base 70 is formed in the home base region portion 20.

[0076] Also, in the present embodiment, although the reference portion 21 has been described using an example in which it forms a frame shape when viewed in the thickness direction of the main body 2 and its contour is provided in a home base shape, as long as it can be aligned with the home base 70, it may have a shape other than the home base shape.

[0077] Also, in the present embodiment, although the auxiliary tool 1 has been described using an example in which it includes the string-shaped member 40, it may not include the string-shaped member 40.

[0078] Also, in the present embodiment, the main body 2 has been described using an example in which it includes the reference line portion 45 for the first fair line and the reference line portion 46 for the second fair line. However, it may be configured to include only one of the reference line portion 45 for the first fair line and the reference line portion 46 for the second fair line, or it may not include either of them.

[0079] Also, in the present embodiment, the accessory 1 has been described using examples of the dimensions of the right batter's box 81, left batter's box 82, catcher's box 83, and dirt circle 85 for junior baseball. However, the dimensions may be for other than junior baseball (for example, professional, general, high school, middle school). Further, the first reference holes 11 to the sixth reference holes 33 corresponding to the batter's boxes (right batter's box 81, left batter's box 82) and catcher's box 83 for junior baseball, and the first reference hole (not shown) to the sixth reference hole (not shown) corresponding to the batter's box (not shown) and catcher's box (not shown) for other than junior baseball may be provided in one accessory 1.

[0080] Also, in the present embodiment, the accessory 1 has been described using an example in which it can be used for drawing lines such as a batter's box in baseball. However, it may also be possible to use it for drawing lines such as a batter's box in softball. In this case, the positions of the first reference hole (not shown) and the second reference hole (not shown) of the accessory (not shown) are set according to the batter's box for junior softball or for softball in general, high school, or middle school. Note that in the case of the accessory (not shown) for softball, the third reference hole (not shown) to the sixth reference hole (not shown) may not be provided.

[0081] Also, in this embodiment, an example in which the point piles S inserted into the respective reference holes are driven into the ground has been described, but the present invention is not limited to this example. For example, after aligning the reference portion 21 of the auxiliary tool 1 with the home base 70, a recess (not shown) for a line drawing mark may be formed on the ground by a rod (not shown) inserted into each reference hole, or line powder or the like may be dropped onto the ground from above each reference hole through each reference hole to form a mark for line drawing.

[0082] Also, in this embodiment, an example in which line drawing is performed with the point piles S inserted into the respective reference holes driven into the ground and the point piles S are used in the state of being driven into the ground has been shown. However, if the point piles S become an obstacle when starting practice such as baseball, the point piles S may be pulled out.

Industrial Applicability

[0083] The present invention is suitable for an auxiliary tool that can be used for line drawing in baseball or softball.

Explanation of Reference Numerals

[0084] 1 Auxiliary tool 2 Main body portion 10 Right batter's box area portion 10a First short side portion 10b Second short side portion 11 First reference hole 12 Third reference hole 13 Fourth reference hole 20 Home base area portion 21 Reference portion 30 Left batter's box area portion 30a Third short side portion 30b Fourth short side portion 31 Second reference hole 32 Fifth reference hole 33 Sixth reference hole 40 String-like member 70 Home base 85 Dirt circle

Claims

1. An auxiliary tool that can be used to draw lines in baseball or softball, The device has a sheet-shaped main body, The main body portion includes a right batter's box area portion, a home base area portion, and a left batter's box area portion, which are arranged in this order. A transparent or semi-transparent sheet material is provided in the home base area to cover the home base and to allow the home base to be visually recognized, The sheet material is provided with a reference portion for aligning the sheet material with the home base through the sheet material, The right batter's box area is set to have a rectangular shape as viewed in a thickness direction of the main body, and a first reference hole is provided at each of the four corners of the right batter's box area, the first reference hole penetrating the main body being provided at each of the four corners of the right batter's box area. The left batter's box area is set to have a rectangular shape as viewed in a thickness direction of the main body, and at each of the four corners, a second reference hole is provided penetrating the main body, The main body portion is configured to be rollable or foldable.

2. In the aid according to claim 1, The sheet material is set to a rectangular shape when viewed in a thickness direction of the main body portion, and is provided on the main body portion so as to close a central hole formed through the main body portion in a longitudinal direction central portion, The reference portion is provided inside the sheet material in the shape of a home base so that the outline of the home base and the reference portion can be aligned while the outline of the home base and the reference portion are visible through the sheet material.

3. The aid according to claim 1 or 2, the right batter's box area portion has a first short side portion and a second short side portion opposed to the first short side portion, the left batter's box area portion has a third short side portion corresponding to the first short side portion, and a fourth short side portion facing the third short side portion and corresponding to the second short side portion, a third reference hole penetrating the main body is provided in the first short side portion; a fourth reference hole penetrating the main body is provided in the second short side portion; The third short side portion is provided with a fifth reference hole penetrating the main body portion, A sixth reference hole penetrating the main body is provided in the fourth short side portion, a first interval between the third reference hole and the fifth reference hole and a second interval between the fourth reference hole and the sixth reference hole are set to lengths corresponding to a left-right width of a catcher's box, When the main body is moved so that the first short side portion overlaps with the second short side portion and the third short side portion overlaps with the fourth short side portion, a line connecting the third reference hole and the fourth reference hole after the movement, and a line connecting the fifth reference hole and the sixth reference hole respectively form left and right lines of a catcher's box.

4. The aid according to claim 1 or 2, Further comprising a string-like member having a length corresponding to the radius of the dirt circle; An auxiliary tool, wherein one end of the string-like member is attached to the reference portion.

Images