Abstract: A joining member includes a first support portion supporting a first pole member in the longitudinal direction at the bottom surface, a second support portion supporting a second pole member in the longitudinal direction at the bottom surface, a first contact portion located on one side of the first support portion along the longitudinal direction of the first pole member and contacting the first pole member at the side surface, and a second contact portion located on one or the other side of the second support portion along the longitudinal direction of the second pole member and contacting the second pole member at the side surface. The first support portion and/or the first contact portion has a through portion in the bottom surface or the side surface. The second support portion and/or the second contact portion has a through portion in the bottom surface or the side surface.

Abstract: According to one embodiment, an assembly ball includes a plurality of strips having a circumferential length. The strips are assembled convexly outward as viewed in the radial direction so as to substantially form a sphere as a whole. The strips each overlap other strips at their respective strip overlapping portions where the strips intersect with one another. The strip overlapping portions are joined by a strip joining member.

Abstract: According to one embodiment, an assembly ball includes a plurality of strips having a circumferential length. The strips are assembled convexly outward as viewed in the radial direction so as to substantially form a sphere as a whole. The strips each overlap other strips at their respective strip overlapping portions where the strips intersect with one another. The strip overlapping portions are joined by a strip joining member.

Abstract: The ball of the present invention is characterized by including at least one skin layer having water absorbability. The at least one skin layer may be formed of a water absorbent material, or may be formed so as to include a surface portion and a water absorbent outer skin adhered to at least a part of the surface portion. According to the ball of the present invention, a ball for competitions that can easily maintain water absorbency is provided while remaining durable even when used for a long time and not requiring man-hours during the manufacturing process.

Abstract: A ball body is covered by a plurality of skin members formed integrally of a soft material comprised of resin or rubber as a shaped structure having a front wall portion, a circumferential wall portion and a recess portion altogether. In the recess portion, between the ball body and each skin member, there is formed a hollow portion surrounded by the ball body and the respective skin member and separating the ball body and the front wall portion from each other. As a cushion portion and an air present portion are coexistent in each hollow portion, when a person grips a ball, the cushion portion is collapsed to increase the area of contact between the outer face of the ball and the pulp(s) of the finger(s), thus facilitating the person's gripping of the ball. The readily grippable state of the ball can be maintained for a long period of time.

Abstract: [Problem] To make a ball easy to be grabbed. [Solution] In a skin body 3 which covers a ball main body 2, a skin part 2 and a circumferential wall part 3 protruding from a peripheral edge part of the skin part 2 to a back side are integrally formed by molding of injecting a soft material made of resin or rubber into a mold. Alternatively, a structure is such that a step part or flat surface part where a finger is hung is provided on a front surface of the ball main body 2 or a front surface of the skin body 3 which covers the ball main body 2. Alternatively, a front surface of one of adjacent skin bodies 3 and a front surface of the other thereof configure a step part in a radial direction of a ball 1.

Abstract: The ball of the present invention is characterized by including at least one skin layer having water absorbability. The at least one skin layer may be formed of a water absorbent material, or may be formed so as to include a surface portion and a water absorbent outer skin adhered to at least a part of the surface portion. According to the ball of the present invention, a ball for competitions that can easily maintain water absorbency is provided while remaining durable even when used for a long time and not requiring man-hours during the manufacturing process.

Abstract: [Problem] To make a ball easy to be grabbed. [Solution] In a skin body 3 which covers a ball main body 2, a skin part 2 and a circumferential wall part 3 protruding from a peripheral edge part of the skin part 2 to a back side are integrally formed by molding of injecting a soft material made of resin or rubber into a mold. Alternatively, a structure is such that a step part or flat surface part where a finger is hung is provided on a front surface of the ball main body 2 or a front surface of the skin body 3 which covers the ball main body 2. Alternatively, a front surface of one of adjacent skin bodies 3 and a front surface of the other thereof configure a step part in a radial direction of a ball 1.