JPWO2015099185A1 - ball - Google Patents

Abstract

The present invention provides a ball that bounces without containing compressed air at atmospheric pressure or higher. A plurality of concave portions 4 and 14 are formed by a plurality of linear convex portions 3 and 13 on a inner wall surface of a plurality of divided bodies 1 and 11 made of a soft material made of resin or rubber. Since the convex portion exhibits the same function as a bobbin thread, the ball has a uniform hardness as a whole. 11 can be used as a ball with or without attaching a skin formed separately from the outer wall surface of the ball, while the split ends or split ends of the split bodies 1 and 11 having circular openings. Since the flange portions 5 and 15 provided on the surface are welded or bonded to each other and do not protrude outward from the outer wall surface of the ball, it is easy to use as a ball regardless of whether or not the skin is attached. [Selection] Figure 1

Description

  The present invention relates to a hollow ball made of a plurality of divided bodies made of a soft material made of resin or rubber.

  19 and 20 show a bladder as an air sac of a ball disclosed in Patent Document 1. FIG. As shown in FIG. 19, in the bladder, the flange portion 102 of the first divided body 101 and the flange portion 104 of the second divided body 103 are joined together to form one ball. The first divided body 101 is provided with a valve portion 105 shown in FIG. Therefore, a needle such as an injection needle is inserted into the valve unit 105 from the outside of the bladder, the tip of the air filling tool is connected to the needle, and air is put into the bladder or withdrawn from the bladder by the air filling tool. can do.

  As shown in FIG. 19, the first divided body 101 is made of a thermoplastic resin and has a shape having a dome-shaped space inside from a circular opening. Linear protrusions 106 extend vertically and horizontally on the inner wall surface of the first divided body 101, and protrude from the inner wall surface of the first divided body 101 toward the space. The convex portions 106 intersect with each other vertically and horizontally, and a plurality of concave portions 107 having a quadrangular vertical projection surface are formed on the inner wall surface of the first divided body 101 so as to be surrounded by the convex portions 106. The flange portion 102 of the first divided body 101 protrudes from the opening of the first divided body 101 to the outside in the diameter direction of the first divided body 101 and has an annular shape that goes around the opening of the first divided body 101. An alignment portion 108 is provided on the flange portion 102.

  The second divided body 103 is made of a thermoplastic resin and has a shape having a dome-shaped space inside from a circular opening. Linear protrusions 109 extend vertically and horizontally on the inner wall surface of the second divided body 103 and protrude from the inner wall surface of the first divided body 101 toward the space. The convex portions 109 intersect with each other vertically and horizontally, and a plurality of concave portions 110 having a quadrangular vertical projection surface are formed on the inner wall surface of the first divided body 101 so as to be surrounded by the convex portions 109. The flange portion 104 of the second divided body 103 protrudes from the opening of the second divided body 103 to the outside in the diameter direction of the second divided body 103 and has an annular shape that goes around the opening of the second divided body 103. An alignment portion 111 is provided on the flange portion 104.

  Then, the opening of the first divided body 101 and the opening of the second divided body 103 face each other, the alignment portions 108 and 111 are fitted into each other, and the flange portions 102 and 104 are aligned with each other and welded by heat. Thus, the first divided body 101 and the second divided body 103 form one sphere to constitute the bladder shown in FIG.

  However, as shown in FIG. 19, in the bladder composed of the first and second divided bodies 101 and 103, the flange portions 102 and 104 have a structure protruding outward from the outer wall surface of the bladder. If it is not attached to the bladder, the bladder cannot be used as a ball. Further, when attaching the skin body to the bladder, it is necessary to avoid the flange portions 102 and 104 or to provide the skin body with a foam layer that absorbs the steps of the flange portions 102 and 104.

US Patent Application Publication No. 2013/0053193

  The present invention has been made in view of the above background art, and the ball has a uniform hardness as a whole, and an outer skin formed separately from the first divided body and the second divided body is attached to the outer wall surface of the ball. It is intended to be able to be used as a ball without being attached.

  The present invention is a hollow ball composed of a plurality of divided bodies made of a soft material made of resin or rubber, and a convex or concave portion is provided on the inner wall surface of each divided body to constitute a hollow ball. Thus, when the division | segmentation edge part of each division body mutually welded or adhere | attached, it became the structure which did not protrude outside the outer wall surface of a ball | bowl.

  Since the present invention has a configuration in which a convex portion or a concave portion is provided on the inner wall surface of a hollow ball made of a plurality of divided bodies, the convex portion exhibits a function like a bobbin, and the ball has a uniform hardness throughout. Thus, the skin body formed separately from the plurality of divided bodies can be used as a ball with or without being attached to the outer wall surface of the ball. That is, by providing a convex portion or a concave portion on the inner wall surface of a hollow ball, it was possible to develop a ball that jumps without entering compressed air above atmospheric pressure into the ball. Also, when the divided ends of each divided body are welded or bonded to each other so as to form a hollow ball, it does not protrude outward from the outer wall surface of the ball, so it is formed separately from a plurality of divided bodies When pasting the applied skin body on the outer wall surface of the ball, the skin body can be pasted without any special processing across the welded or bonded bond lines between the split ends of each split body. In the present invention, a flange portion is provided at the split end portion of the split body so as to protrude from the split end portion of the split body toward the center portion, and the flange portions are welded or bonded to each other so as to form a hollow ball. In this case, if the structure does not protrude outward from the outer wall surface of the ball, the coupling strength of the divided body can be maintained even if the thickness of the dome-shaped wall body portion of the divided body is reduced. Moreover, in this invention, if a ball | bowl is used as a bladder and a skin body is provided in the outer wall surface of a bladder, a skin body can be changed and a bladder can be shared.

The perspective view which decomposes | disassembles and shows the 1st and 2nd division body which concerns on the form 1 for implementing invention. The perspective view which shows the external appearance of the truncated icosahedron explaining how to provide the convex part which concerns on the form 1 for implementing invention. The end elevation which shows the 1st and 2nd division body which concerns on the form 1 for implementing invention. The perspective view which shows the external appearance of the ball | bowl which concerns on form 1 for implementing invention. The end elevation which shows the 1st and 2nd division body which concerns on the form 2 for implementing invention. The expanded view which shows the inside of a part of division body which concerns on the form 3 for implementing invention. Sectional drawing which cut | disconnected FIG. Sectional drawing equivalent to FIG. 7 of the division body which concerns on the form 4 for inventing. The expanded view which shows the inside of a part of division body which concerns on the form 5 for inventing. The perspective view which shows the inside of a part of division body which concerns on the form 6 for implementing invention. The perspective view which shows the inside of a part of division body which concerns on the form 7 for implementing invention. The perspective view which decomposes | disassembles and shows the 1st and 2nd division body which concerns on the form 8 for implementing invention. The perspective view which decomposes | disassembles and shows the 1st and 2nd division body which concerns on the form 9 for implementing invention. The perspective view which decomposes | disassembles and shows the 1st thru | or 3rd division body which concerns on the form 10 for implementing invention. The expanded view which shows the 1st thru | or 4th division body which comprises the hollow ball which concerns on the form 11 for implementing invention. The perspective view which decomposes | disassembles and shows the ball | bowl which concerns on the form 12 for implementing invention. Sectional drawing which shows the structure which a skin body affixed on the bladder which concerns on the form 13 for implementing invention. Sectional drawing which couple | bonds and shows a part of bladder according to Embodiment 14 for carrying out the invention, and the epidermis. The perspective view which shows the inside of the conventional 1st and 2nd division body. The perspective view which shows the external appearance of the bladder which consists of the conventional 1st and 2nd division body.

  With reference to FIG. 1, the internal structure of the 1st and 2nd division bodies 1 and 11 illustrated as the some division body which concerns on form 1 for implementing invention is demonstrated. A plurality of divided bodies constitute one hollow ball by being combined with each other. Accordingly, the first and second divided bodies 1 and 11 are combined with each other to form one hollow ball. When the 1st and 2nd division bodies 1 and 11 are comprised from the thermoplastic resin, the 1st and 2nd division bodies 1 and 11 can be couple | bonded with welding or an adhesive agent. On the other hand, when the 1st and 2nd division bodies 1 and 11 are comprised from the thermosetting resin or rubber | gum, the 1st and 2nd division bodies 1 and 11 can be couple | bonded with an adhesive agent.

  The 1st division body 1 is comprised by the spherical notch shape provided with the space recessed inside from circular opening. The first divided body 1 includes a wall body portion 2, a convex portion 3, a concave portion 4, and a flange portion 5 by molding a material made of resin or rubber using a mold such as injection molding, breath molding, or vacuum molding. It is a unitary structure. The wall part 2 surrounding the space of the first divided body 1 has the same thickness as a whole. The wall part 2 has a dome shape protruding from the back side to the front side. The dome shape is a solid figure obtained by cutting a hollow ball on one plane. Therefore, the wall part 2 constitutes a three-dimensional curved surface along the predetermined outer wall surface of the ball. On the inner wall surface located on the side of the space in the wall body portion 2, a large number of convex portions 3 are provided in a linear shape. Each convex part 3 protrudes from the inner wall surface of the wall part 2 into the space inside the first divided body 1. A large number of concave portions 4 having a triangular projection surface are formed on the inner wall surface of the wall body portion 2 in a shape surrounded by the respective convex portions 3.

  A flange portion 5 is provided at a divided end portion of the first divided body 1 which is a circular opening. The flange portion 5 protrudes from the divided end portion of the first divided body 1 toward the center of the opening of the first divided body 1 and has an annular shape that goes around the opening of the first divided body 1. That is, the flange portion 5 is configured in an annular shape protruding from the outer wall surface of the first divided body 1 toward the inner space without protruding toward the outer wall surface side of the first divided body 1.

  The 2nd division body 11 is comprised by the spherical notch shape provided with the space hollow inside from circular opening. The second divided body 11 includes a wall body portion 12, a convex portion 13, a concave portion 14, and a flange portion 15 by molding a material made of resin or rubber using a mold such as injection molding, breath molding, or vacuum molding. It is an integrated structure. The wall part 12 surrounding the space of the second divided body 11 has the same thickness as a whole. The wall portion 12 has a dome shape protruding from the back side to the front side. Therefore, the wall part 12 comprises a three-dimensional curved surface along the predetermined outer wall surface of the ball. On the inner wall surface located on the space side of the wall body portion 12, a large number of convex portions 13 are provided linearly. Each convex portion 13 protrudes from the inner wall surface of the wall body portion 12 into the space inside the second divided body 11. On the inner wall surface of the second divided body 11, a large number of concave portions 14 having a triangular projection surface are formed in a shape surrounded by the convex portions 13.

  A flange portion 15 is provided at a divided end portion of the second divided body 11 which is a circular opening. The flange portion 15 protrudes from the opening of the second divided body 11 toward the center of the opening of the second divided body 11 and has an annular shape that goes around the opening of the second divided body 11. That is, the flange portion 15 is configured in an annular shape protruding from the outer wall surface of the second divided body 11 toward the inner space without protruding toward the outer wall surface side of the second divided body 11.

  The structure provided with the wall part 2, the convex part 3, the concave part 4, and the flange part 5 of the first divided body 1, the wall part 12, the convex part 13, the concave part 14, and the flange part 15 of the second divided body 11. The first divided body 1 and the second divided body 11 have the same weight as each other. Therefore, when the hollow ball has a configuration in which air cannot be taken in and out, two divided bodies having the same shape are formed by molding using a mold, and one of the two divided bodies is used as the first divided body 1. The other divided body of the two can be applied as the second divided body 11.

  Further, the first and second divided bodies 1 and 11 can be assembled by a non-illustrated assembly machine so as to form one hollow sphere. The case where the first and second divided bodies 1 and 11 are assembled so as to form one hollow sphere with an unillustrated assembly machine will be described. The first divided body 1 is held in one holding portion, and the second divided body 11 is held in the other holding portion.

  And the flange part 5 of the 1st division body 1 hold | maintained at one holding | maintenance part and the flange part 15 of the 2nd division body 11 hold | maintained at the other holding | maintenance part were mutually opposed as shown, for example in FIG. State. And after the end surface 6 located in the 2nd division body 11 side of the flange part 5 and the end surface 16 located in the 1st division body 1 side of the flange part 15 are fuse | melted with heat, two holding | maintenance parts mutually By moving linearly in the approaching direction and pressing the end faces 6 and 16 together, the first and second divided bodies 1 and 11 are firmly welded together to form one hollow ball.

  As described above, the convex portions 3 and 13 are provided on the inner wall surfaces of the first and second divided bodies 1 and 11 so as to surround the multiple concave portions 4 and 14, so that the convex portions 3 and 13 are thread wound. Such a function is exhibited, and the ball composed of the first and second divided bodies 1 and 11 has a uniform hardness as a whole, and an appropriate reband performance as a ball can be exhibited.

  With reference to FIG. 2, the method of providing the convex portions 3 and 13 in FIG. 1 will be described using the truncated icosahedron 61 as an example. In FIG. 2, five triangular regions are provided in the regular pentagonal surface portion 62 of the truncated icosahedron 61. The regular hexagonal surface portion 63 in the truncated icosahedron 61 is provided with six triangular regions. The triangular region in the regular pentagonal surface portion 62 and the triangular region in the regular hexagonal surface portion 63 are different in size. The first divided body 1 and the first divided body 1 are arranged such that the convex portions 3 and 13 of FIG. 1 are arranged on the dividing lines (lines consisting of dotted lines and solid lines) of the triangular regions in each of the regular pentagonal surface portion 62 and the regular hexagonal surface portion 63. It is the structure provided in the state projected on the inner wall surface from the center with the 2nd division body 11. FIG. Note that the same effects can be expected by providing the convex portions 3 and 13 by using a regular polyhedron other than the truncated icosahedron 61. Further, any shape other than a triangle, such as a geometric pattern, can be applied as long as the entire ball can be balanced.

  With reference to FIG. 3, the 1st and 2nd division bodies 1 and 11 are demonstrated. Radius 8 of the outer wall surface centered on the central part 7 located in the opening of the first divided body 1, radius 9 of the inner wall surface centered on the central part 7 located in the opening of the first divided body 1, second divided body If the radius 18 of the outer wall surface centered on the central portion 17 located at the opening 11 and the radius 19 of the inner wall surface centered at the central portion 17 located at the opening of the second divided body 11 are assumed, the radii 8 and 18 are The same dimensions and the radii 9, 19 are the same.

  In FIG. 3, when a ball is constituted by the first and second divided bodies 1, 11, the end faces 6, 16 located at the respective openings of the first and second divided bodies 1, 11 are coupled to each other. Thereby, one ball is formed in the shape shown in FIG. 4 from the first and second divided bodies 1 and 11. When the first and second divided bodies 1 and 11 are joined, the shape of the wall bodies 2 and 12 is maintained so as not to be deformed.

  With reference to FIG. 4, the external appearance of the ball | bowl which consists of the 1st and 2nd division bodies 1 and 11 is demonstrated. The ball has a coupling line 21 in which the flange portions 5 and 15 of the first and second divided bodies 1 and 11 are coupled to each other. In the connecting wire 21, the flange portions 5, 15 do not protrude outward from the outer wall surfaces of the first and second divided bodies 1, 11. That is, the outer wall surface of the ball forms a smooth spherical surface in which the outer wall surfaces of the first and second divided bodies 1 and 11 are continuous with each other.

  The ball may be configured so that compressed air having a pressure higher than the atmospheric pressure cannot be injected from the outside to the inside, and may be configured so that compressed air can be injected from the outside to the inside. is there. When the ball is configured so that compressed air cannot be injected from the outside to the inside, the ball installation hole 22 shown in phantom lines in FIG. By providing the hole, the inside of the ball has the same pressure as the atmospheric pressure, and is not affected by the atmospheric pressure or the outside air temperature.

  When the ball is configured so that compressed air can be injected from the outside to the inside, the valve installation hole 22 shown by the phantom line in FIG. 4 is one or both of the first and second divided bodies 1 and 11. A valve portion (not shown) is attached to the valve installation hole portion 22. Then, a needle such as an injection needle is inserted into the valve from the outside of the ball, and the tip of the air filling tool is connected to the needle, and air can be put into or taken out of the ball by the air filling tool. That is, it becomes a structure which can utilize the characteristic of an air spring because the inside of the ball | bowl which consists of the 1st and 2nd division bodies 1 and 11 becomes a pressure higher than atmospheric pressure.

  Furthermore, without attaching a skin body outside the figure formed separately from the first and second divided bodies 1 and 11 to the outer wall surface of the ball consisting of the first and second divided bodies 1 and 11 shown in FIG. Even if a pattern resembling a non-illustrated epidermis is integrally provided, it can be similarly applied.

  With reference to FIG. 5, the 1st and 2nd division bodies 1 and 11 which concern on the form 2 for implementing invention are demonstrated. The first and second divided bodies 1 and 11 shown in FIG. 5 are different from the first and second divided bodies 1 and 11 shown in FIG. 3 in that the flange portions 5 and 15 shown in FIG. 3 are not provided. . Since the wall portions 2 and 12 shown in FIG. 5 are thicker than the wall portions 2 and 12 shown in FIG. 3 and the end faces 6 and 16 of the divided end portions are welded, The same bond line as the bond line 21 shown in FIG. 3 in which the divided end portions of the first and second divided bodies 1 and 11 are coupled to each other exists. In the same connection line as the connection line 21, the divided end portions do not protrude outward from the outer wall surfaces of the first and second divided bodies 1 and 11. That is, the outer wall surface of the ball forms a smooth spherical surface in which the outer wall surfaces of the first and second divided bodies 1 and 11 are continuous with each other.

  With reference to FIG. 6, FIG. 7, the structure which gave the height difference to the convex parts 33 and 34 which concerns on the form 3 for implementing invention is demonstrated. 6 and 7, the divided body 31 is a generic name for the first and second divided bodies 1 and 11 in FIG. 1, and the wall body portion 32 is a generic name for the wall body parts 2 and 12 in FIG. 1. The convex portions 33 and 34 are generic names of the convex portions 3 and 13 in FIG. 1, and the concave portions 35 and 36 are generic names of the concave portions 4 and 14 in FIG.

  As shown in FIG. 6, when the convex portion 33 surrounds one concave portion 35 and the convex portion 34 surrounds a plurality of concave portions 36 in the concave portion 35, the convex portion 33 becomes higher than the convex portion 34. Yes.

  Specifically, as shown in FIG. 7, the height H1 of the convex portion 33 is higher than the height H2 of the convex portion 34 (H1> H2). The heights H <b> 1 and H <b> 2 are dimensions that protrude from the wall body portion 32 toward the inside of the divided body 31.

  FIG. 8 illustrates a structure in which a difference in height is provided to the convex portions 33 and 34 according to the fourth embodiment for carrying out the invention. As shown in FIG. 8, a configuration in which the height H <b> 2 of the convex portion 34 decreases from both end portions located on the convex portion 33 side toward the central portion side of the concave portion 35 is also applicable. In FIG. 8, the divided body 31 is a generic name for the first and second divided bodies 1 and 11 in FIG. 1, and the wall body portion 32 is a generic name for the wall body portions 2 and 12 in FIG. , 34 is a general term for the convex portions 3 and 13 in FIG. 1, and the concave portions 35 and 36 are a general term for the concave portions 4 and 14 in FIG.

  As described above, the rebound, strength, and tactile sensation of the ball can be adjusted by providing the convex portions 33 and 34 with a height difference.

  Further, as shown in FIG. 7 and FIG. 8, ridges, dimples, and knurls are formed on the outer wall surface of the wall body portion 32, such as forming the convex pattern portion 56 and the concave pattern portion 57 on the outer wall surface of the wall body portion 32. It is also possible to make it difficult to slip by providing unevenness such as. There are cases where unevenness is provided on the outer wall surface of the wall body portion 32, cases where it is provided by molding the divided body 31, and cases where a skin body formed separately from the divided body 31 is attached to the outer wall surface of the wall body portion 32.

  With reference to FIG. 9, the structure where the convex parts 37 and 38 which concern on the form 5 for implementing this invention became discontinuous is demonstrated. A plurality of convex portions 37 exist at the cuts of the plurality of convex portions 38, a plurality of convex portions 38 exist at the cuts of the plurality of convex portions 37, and the plurality of convex portions 37 and the plurality of convex portions 38 are arranged in a grid pattern, and a pair of convex portions 37 and a pair of convex portions 38 surround one concave portion 39. 9, the divided body 31 is a generic name for the first and second divided bodies 1 and 11 in FIG. 1, and the wall body portion 32 is a generic name for the wall body portions 2 and 12 in FIG. , 38 is a generic term for the convex portions 3 and 13 in FIG. 1, and the concave portion 39 is a generic term for the concave portions 4 and 14 in FIG. 1. The shape of the concave portion 39 surrounded by the convex portions 37 and 38 is applicable to a triangle, a quadrangle, a pentagon or more polygon, a circle, an ellipse, and the like.

  With reference to FIG. 10, the structure of the convex part 46 which concerns on the form 6 for implementing invention is demonstrated. On the inner surface of the wall body portion 32 of the divided body 31, a convex portion 46 is provided in a spiral shape. The number of the convex portions 46 may be one or two or more. The convex portion 46 may have a discontinuous configuration in which a cut is present in the middle. 10, the divided body 31 is a generic name of the first and second divided bodies 1 and 11 in FIG. 1, and the wall body portion 32 is a generic name of the wall body portions 2 and 12 in FIG. Is a general term for the convex portions 3 and 13 in FIG. 1 and can be applied even if the convex portion 46 is formed as a concave portion.

  With reference to FIG. 11, the structure of the convex parts 47 and 48 which concerns on the form 7 for implementing invention is demonstrated. Convex portions 47 are provided radially on the inner surface of the wall portion 32 of the divided body 31. Convex portions 48 are provided in a zigzag shape at portions partitioned by adjacent convex portions 47. The number of the convex portions 47 and 48 may be one or two or more. The convex portions 47 and 48 may have a discontinuous configuration in which a cut is present in the middle. 11, the divided body 31 is a generic name for the first and second divided bodies 1 and 11 in FIG. 1, and the wall body portion 32 is a generic name for the wall body portions 2 and 12 in FIG. Is a general term for the convex portions 3 and 13 in FIG. 1 and can be applied even if the convex portions 47 and 48 are formed as concave portions.

  With reference to FIG. 12, the 1st and 2nd division body 1,11 which concerns on the form 8 for implementing invention is demonstrated. The first divided body 1 has a shape divided smaller than the second divided body 11. Convex portions 3 and 13 are provided on the inner wall surfaces of the first and second divided bodies 1 and 11 so as to surround a large number of concave portions 4 and 14 having a geometric pattern. Then, the opening of the first divided body 1 and the opening of the second divided body 11 face each other, and the end surface 6 of the first divided body 1 and the end surface 16 of the second divided body 11 are coupled to each other, thereby One ball is formed from the first and second divided bodies 1 and 11.

  In FIG. 12, the second divided body 11 can be similarly applied by dividing it into two by a dividing line 23 indicated by a virtual line.

  With reference to FIG. 13, the 1st and 2nd division bodies 1 and 11 which concern on the form 9 for implementing invention are demonstrated. The 1st and 2nd division bodies 1 and 11 are the shape divided | segmented into the gourd type like the division body which comprises a baseball ball or a tennis ball. Convex portions 3 and 13 are provided on inner wall surfaces of the first and second divided bodies 1 and 11 so as to surround a large number of concave portions 4 and 14 having a geometric pattern. Then, the respective openings of the first and second divided bodies 1 and 11 face each other, and the end faces 6 and 16 of the first and second divided bodies 1 and 11 are coupled to each other, whereby the first and second One ball is formed from the two divided bodies 1 and 11. The imaginary line shown in FIG. 13 is a line showing the outer shape of one ball composed of the first and second divided bodies 1 and 11. It is also possible to apply a divided configuration in which the first and second divided bodies 1 and 11 are connected to each other at one point so as not to be separated.

  With reference to FIG. 14, the 1st thru | or 3rd division body 1,11,41 illustrated as a some division body which concerns on the form 10 for implementing invention is demonstrated. The 1st thru | or 3rd division body 1,11,41 is the shape divided | segmented into the three in the circumferential direction over a pair of pole point in one hollow ball | bowl. On the inner wall surface of the first to third divided bodies 1, 11, 41, convex portions 3, 13, 43 and flange portions 5, so as to surround a large number of concave portions 4, 14, 42 having a geometric pattern shape. 15 and 44 are provided. And the end surfaces 6, 16:45 located at the openings in the flange portions 5, 15, and 44 of the first to third divided bodies 1, 11, and 41 are coupled to each other, whereby the first to third divided bodies 1, 11 and 41 form one ball. It is also possible to apply a divided configuration in which the first and second divided bodies 1 and 11 are connected to each other at one point so as not to be separated.

  In FIG. 14, the plurality of divided bodies can be similarly applied even when the shape is divided into four parts across a pair of pole points in one hollow ball.

  With reference to FIG. 15, the 1st thru | or 4th division body 1,11,41,51 illustrated as several division body which concerns on the form 11 for implementing invention is demonstrated. The first to fourth divided bodies 1, 11, 41, 51 are connected to each other at one pole in one hollow ball and have a shape divided into four in the circumferential direction. On the inner wall surface of the first to fourth divided bodies 1, 11, 41, 51, there are convex portions 3, 13, 43, 52, concave portions 4, 14, 42, 53 and flange portions 5, 15, 44, 54. Is provided. The convex portions 3, 13, 43, and 52 individually surround the concave portions 4, 14, 42, and 53. The concave portions 4, 14, 42, 53 are a large number of shapes formed by a geometric pattern. And each end surface 6,16: 45,55 of 1st thru | or 4th division body 1,11,41,51 is mutually joined, From 1st thru | or 4th division body 1,11,41,51, One ball is formed.

  With reference to FIG. 16, the structure of the ball according to the twelfth embodiment for carrying out the invention will be described. The bladder 70 is configured by a ball having the convex portion 3 and the concave portion 4 shown in FIG. The skin 71 can be applied even if it has a shape other than a hexagon. Further, the shape of the epidermis 71 attached to one bladder 70 is not limited to one type, and a plurality of types are applicable. The skin body 71 is made of a soft material made of resin or rubber, and includes a main body portion 72, a peripheral wall portion 73, and a chamfered portion 74. The main body 72 has a dome shape protruding from the back side to the front side, and constitutes a three-dimensional curved surface along the predetermined outer wall surface of the bladder 70.

  The peripheral wall portion 73 protrudes from the respective peripheral edge portions of the main body portion 72 to the back side as the bladder 70 side, and has an annular shape that goes around the peripheral edge portion of the main body portion 72. The chamfered portion 74 is configured to be removed so that the ridge angle between the main body portion 72 and the peripheral wall portion 73 is a flat surface or a curved surface on the front side as a side of the epidermis 71 touched by a person. In other words, the chamfered portion 74 having a configuration in which the ridge angle between the main body portion 72 and the peripheral wall portion 73 is flat or curved is provided on the front side of the epidermis 71.

  As described above, the skin body 71 is formed by injection molding using a soft material made of resin or rubber, press molding, vacuum molding, blow molding, or the like using a mold such as the main body 72, the peripheral wall 73, and the chamfer. It has a simple structure with an integrated structure including 74.

  Referring to FIG. 17, a structure in which an outer skin 71 according to the thirteenth embodiment for carrying out the invention is affixed to a bladder 70 composed of balls having convex portions 3 and concave portions 4 shown in FIG. 1 inside. explain. In a state where the peripheral wall portions 73 of the adjacent epidermis bodies 71 are bonded to each other with an adhesive, the main body portion 72 is disposed away from the outer wall surface of the bladder 70, and the surface of the adjacent peripheral wall portion 73 on the bladder 70 side is the bladder 70. It is adhered to the outer wall surface of the film with an adhesive.

  As a result, the cavity 75 is formed as a space surrounded by the bladder 70, the main body 72, and the peripheral wall 73 between the epidermis 71 and the bladder 70, and the plurality of epidermis 71 is the entire outer wall surface of the bladder 70. When the person grips the ball, the main body 72 is easy to dent and the ball is easy to grip. Further, a valley portion based on the chamfered portion 74 is formed at the boundary between the adjacent skin bodies 71, so that the ball can be easily gripped, and the appearance of the ball is hand-sewn.

  With reference to FIG. 18, the structure of the ball according to the fourteenth embodiment for carrying out the invention will be described. As shown in FIG. 18, the adjacent skin 71 is fixed to the outer wall surface of the bladder 70 so that a gap is formed between adjacent peripheral wall portions 73, and a spacer 76 is disposed in the gap. Structure. The spacer 76 can be applied to a structure provided integrally with the bladder 70 or provided separately from the bladder 70. When the spacer 76 is separate from the bladder 70, the spacer 76 is fixed to one or both of the bladder 40 and the adjacent epidermis 71.

  Although not shown, the convex portions 3, 13, 33, 34, 37, 38, 43, 52 are concave portions, the concave portions 4, 14, 35, 36, 39, 42, 53 are convex portions, and the convex portion 3 is shown. , 13, 33, 34, 37, 38, 43, 52, the first divided body 1, the second divided body so that the concave portion instead of the concave portions 4, 14, 35, 36, 39, 42, 53 surrounds Even if it is provided on the inner surface of a divided body such as the body 11, the divided body 31, the third divided body 41, the fourth divided body 51, etc.

  Although not shown in the figure, the convex portions 3, 13, 33, 34, 37, 38, 43, 52 or the convex portions in place of the concave portions 4, 14, 35, 36, 39, 42, 53 are formed by balls. As long as it has a uniform hardness as a whole and can exhibit appropriate rebanding performance as a ball, it can be applied to a shape that protrudes discontinuously such as a circle, an ellipse, or a square other than a linear shape.

DESCRIPTION OF SYMBOLS 1 1st division body 2 Wall part 3 Convex part 4 Concave part 5 Flange part 6 End surface 7 Center part 8 Radius 9 Radius 11 Second division body 12 Wall part 13 Convex part 14 Concave part 15 Flange part 16 End surface 17 Center part 18 Radius 19 Radius 21 Bonding Line 22 Valve Installation Hole 23 Dividing Line 31 Divided Body 32 Wall Body 33 Convex 34 Convex 35 Concave 36 Concave 37 Convex 38 Convex 39 Concave 41 Concave 41 Concave 41 Concave 43 Concave Convex 44 Flange Portion 45 End surface 46 Convex portion 47 Convex portion 48 Convex portion 51 Fourth segment 52 Convex portion 53 Concave portion 54 Flange portion 55 End surface 56 Convex pattern portion 57 Concave pattern portion 61 Crested icosahedron 62 Regular pentagonal surface portion 63 Regular hexagonal surface portion 70 Bladder 71 Skin 72 Main body 73 Perimeter wall 74 Chamfer 75 Cavity 76 Spacer 77 Cross section position 101 First divided body 102 Flange part 103 Second divided body 104 Flange part 1 5 the valve unit 106 protrusion 107 recess 108 aligned portion 109 protrusion 110 recess 111 aligned portion

Claims (3)

  A hollow ball composed of a plurality of divided bodies made of a soft material made of resin or rubber, each of which is provided with a convex portion or a concave portion on the inner wall surface of each divided body to constitute a hollow ball. A ball characterized in that when the divided end portions of the body are welded or bonded together, the ball does not protrude outward from the outer wall surface of the ball.   A flange portion is provided at the divided end portion of the divided body so as to protrude from the divided end portion of the divided body toward the center portion, and when the flange portions are welded or bonded to each other so as to form a hollow ball, The ball according to claim 1, wherein the ball does not protrude outward from the outer wall surface. A ball characterized in that the ball according to claim 1 is used as a bladder, and an outer skin is provided on the outer wall surface of the bladder.

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