TWI520760B - Wrist exercise and housing thereof - Google Patents

Description

Wrist ball and its outer casing

The present invention relates to a wrist ball, and more particularly to a wrist ball having a cushioning structure.

For related art regarding the structure of the wrist training ball, reference may be made to the patents of U.S. Patent Nos. 8,484,436, 7,846,066, 5,806,111, 6,186,914, and D464,687, and the new patents of the Republic of China Patent Publication No. 364383. Referring to the above patent, the wrist training ball generally comprises a casing, a ring and a rotating ball, the casing has a track portion, the collar is slidably disposed on the track portion, and the rotating ball comprises a ball body and a shaft body, and the shaft body runs through The ball body and the opposite ends of the shaft body are respectively pivotally disposed on the collar. The wrist training ball system uses the gyroscope principle, and the wrist training ball can be rotated only by mechanical means, so the user can grasp and hold the wrist force training ball to make it powerful under the action of centrifugal force and inertial force. Rotating power. Therefore, the muscles of the hands and shoulders can be exercised by the rotational force. If the muscle strength of the user's hands and shoulders is sufficient, the number of revolutions of the wrist training ball can exceed 10,000 rpm.

However, since the ball of the rotating ball is pivoted to the collar only by the opposite ends of the shaft body, the weight of the ball is only supported by the shaft body, so the user does not When the wrist training ball hits the ground, the shaft body is easily bent or deformed by the weight of the ball and the high-speed rotation of the shaft body. Among them, when the shaft body is bent and deformed, the relative relationship between the structure and the position of the original wrist force training ball is changed to cause noise or vibration of the wrist training ball. when When the shaft is broken, the wrist training ball loses its function. Therefore, how to improve the wrist force training ball when the external force is impacted, the shaft body is easy to be deformed or broken, and the problem that the wrist force training ball loses the original function will be one of the problems that the researcher should focus on.

The invention provides a wrist force ball, thereby improving the problem that the wrist force training ball is easily deformed or broken when the wrist training ball is subjected to an external force, thereby causing the wrist force training ball to lose its original function.

The wrist ball disclosed in the present invention comprises a casing and a rotating body. The outer casing has a buffer portion. The buffer portion has a rail portion and a buffer body. The position of the buffer body corresponds to the track portion. The rotating body is rotatably disposed on the rail portion. The rotating body includes a set of rings and a rotating ball. The collar is located within the outer casing and slidably disposed on the rail portion. The rotating ball contains a sphere and a shaft. The ball is located inside the housing. The shaft body penetrates the ball body, and opposite ends of the shaft body are respectively pivotally connected to the collar with respect to the rotation of the collar.

The wrist ball disclosed in the present invention comprises a casing and a rotating body. The outer casing has a buffer portion, and the buffer portion has a rail portion, a first buffer body and a second buffer body. The track portion is located between the first buffer body and the second buffer body. The rotating body is rotatably disposed on the rail portion. The rotating body comprises a set of rings and a rotating ball. The collar is located within the outer casing and slidably disposed on the rail portion. The rotating ball contains a sphere and a shaft. The ball is located inside the housing. The shaft body penetrates the ball body, and opposite ends of the shaft body are respectively pivotally connected to the collar with respect to the rotation of the collar.

The outer casing of the wrist ball disclosed in the present invention comprises a first casing and a second casing. The first housing includes a first cover portion, a first buffer body and a first recess portion. The first buffer body is located between the first cover portion and the first recess. The second housing includes a second cover portion, a second buffer body and a second recess portion. The second buffer body is located between the second cover portion and the second recess portion. The second housing is disposed on the first housing to form an accommodating space, and the first recess and the second recess form a rail portion.

According to the wrist ball and the outer casing disclosed in the above invention, the track portion is based on The elastic buffer deformation ability of the buffer portion drives the shaft body to move together with the ball body to prevent the impact stress from being concentrated at the intersection of the pivot joint portion and the load bearing portion. Therefore, the impact force of the shaft body can be shared by the elastic cushioning deformation ability of the buffer portion, and the shaft body can be prevented from being bent or broken by the impact.

The above description of the contents of the present invention and the description of the following embodiments are used. The principles of the invention are illustrated and explained, and a further explanation of the scope of the patent application of the invention is provided.

10‧‧‧Wrist Ball

100‧‧‧ Shell

110‧‧‧First housing

111‧‧‧First cover

112‧‧‧First buffer

112a‧‧‧ hollow structure

112b‧‧‧镂空段

112c‧‧‧Support section

113‧‧‧First recess

113a‧‧‧First combination slot

113b‧‧‧ first combination ring

120‧‧‧second housing

121‧‧‧Second cover

122‧‧‧Second buffer

122a‧‧‧ hollow structure

122b‧‧‧镂空段

122c‧‧‧Support section

123‧‧‧Second recess

123a‧‧‧Second combination slot

123b‧‧‧Second combination ring

130‧‧‧ accommodating space

140‧‧‧Track Department

141‧‧‧ inner wall

142‧‧‧ annular groove

190‧‧‧Rotating the body

200‧‧‧ collar

210‧‧‧ annular flange

220‧‧‧ pivot hole

300‧‧‧Rotating ball

310‧‧‧ sphere

320‧‧‧Axis body

321‧‧‧ Carrying section

322‧‧‧ pivotal section

400‧‧‧protective collar

Fig. 1 is a perspective view showing a wrist ball according to a first embodiment of the present invention.

Fig. 2 is an exploded perspective view of Fig. 1.

Fig. 3 is a schematic cross-sectional view showing the buffer structure of the first casing of Fig. 1.

4A and 4B are schematic cross-sectional views of Fig. 1.

Fig. 5A and Fig. 5B are schematic cross-sectional views showing the impact of the wrist ball of Fig. 1.

Fig. 6 is a plan view showing the outer casing of the wrist ball according to the second embodiment of the present invention.

Figure 7 is a plan view showing the outer casing of a wrist ball according to a third embodiment of the present invention.

Figure 8 is a plan view showing the outer casing of a wrist ball according to a fourth embodiment of the present invention.

Figure 9 is a plan view showing the outer casing of a wrist ball according to a fifth embodiment of the present invention.

Figure 10 is a cross-sectional view showing a cushioning structure of a first casing of a wrist ball according to a sixth embodiment of the present invention.

Figure 11 is an exploded perspective view of a wrist force ball according to a seventh embodiment of the present invention.

1 to 4B, FIG. 1 is a perspective view of a wrist ball according to a first embodiment of the present invention. Fig. 2 is an exploded perspective view of Fig. 1. Fig. 3 is a schematic cross-sectional view showing the buffer structure of the first casing of Fig. 1. 4A and 4B are schematic cross-sectional views of Fig. 1.

The wrist ball 10 of the present embodiment includes a housing 100 and a rotating body 190. The outer casing 100 has a buffer portion 105. The buffer portion 105 has a first buffer body 112, a rail portion 140, and a second buffer body 122. The rotating body 190 is rotatably disposed on the rail portion 140.

Next, the positional arrangement of the first buffer body 112, the rail portion 140, and the second buffer body 122 will be described. In detail, the outer casing 100 includes a first housing 110 and a second housing 120. The first housing 110 includes a first cover portion 111, a first buffer body 112 and a first recess portion 113. The first cover portion 111 is located on one side of the first housing 110, the first recess portion 113 is located at the edge of the other side of the first housing 110, and the first buffer body 112 is located between the first cover portion 111 and the first recess portion 113. . In this embodiment, the first buffer body 112 is adjacent to the first recess portion 113, but is not limited thereto. In other embodiments, the first buffer body 112 may also be kept at a distance from the first recess portion 113. That is, the position of the first buffer body 112 and the first cover portion 111 can be reversed.

The first buffer body 112 has a two-layer hollow structure 112a. The two-layer hollow structure 112a is side by side with each other. In the present embodiment, the two-layer hollow structure 112a is exemplified by one side of the first concave portion 113 in parallel with the first concave portion 113, but is not limited thereto. Each layer of hollow structure 112a surrounds the rotating body 190 and has a plurality of hollow sections 112b and a plurality of support sections 112c. The hollow sections 112b and the support sections 112c are staggered, and the two hollow structures 112a The position of each of the support segments 112c corresponds to the position of each of the hollow segments 112b of the other of the two hollow structures 112a. That is, each of the support segments 112c of one of the two hollow structures 112a has the same horizontal projection position as each of the hollow segments 112b of the other of the two hollow structures 112a.

In addition, as shown in FIG. 3, the left and right sides of the support section 112c of this embodiment The outer wall surface of the first housing 110 is tapered toward the inner wall surface, but is not limited thereto. In other embodiments, the left and right sides of the support portion 112c may also be parallel to each other or from the outer wall of the first housing 110. The face is gradually enlarged toward the inner wall.

The first recess 113 of the embodiment further includes a first combination slot 113a and a first A combination ring 113b. The first combination ring 113b is detachably provided in the first combination groove 113a to constitute the first concave portion 113.

The second housing 120 of the present embodiment, like the first housing 110, includes a connected first The second cover portion 121, the second buffer body 122 and the second recess portion 123 have a second hollow body 122a. Each of the hollow structures 122a surrounds the rotating body 190 and has a plurality of hollow sections 122b and a plurality of support sections 122c. The structure of the second cover portion 121, the second buffer body 122 and the second recess portion 123 of the second housing 120 and the structure of the first cover portion 111, the first buffer body 112 and the first recess portion 113 of the first housing 110 Similar, so I won't go into details. In this embodiment, the material of the first cover portion 111, the second cover portion 121, and the rail portion 140 is, for example, metal or plastic, but is not limited thereto.

The second recess 123 of the embodiment further includes a second combination slot 123a and a first Two combination rings 123b. The second combination ring 123b is detachably provided in the second combination groove 123a to constitute the second concave portion 123.

The second housing 120 is mounted on the first housing 110 to form an accommodating space 130. The first recessed portion 113 and the second recessed portion 123 are formed in the first buffer body 112 and the second buffer body 122. An annular groove 142 is formed between one of the rail portions 140. In detail, the rail portion 140 has an inner wall surface 141. The inner wall surface 141 faces the accommodating space 130, and the annular groove 142 is located at the inner wall surface 141.

It should be noted that the extension direction of each hollow section 112b of this embodiment is The annular grooves 140 are parallel, but not limited thereto. In other embodiments, the extending direction of each hollow portion 112b may also be perpendicular or at an acute angle to the annular groove 140. The direction of extension referred to herein is the direction parallel to the long sides of the hollow section 112b.

In addition, the number of the buffer bodies of the outer casing 100 of the embodiment is two, but Without being limited thereto, in other embodiments, the number of buffers may also be one or more. When the number of the buffer bodies is one, it may be located on the first housing 110 or the second housing 120.

In this embodiment, the first cover portion 111 and the second cover portion 121 are not disposed. In other embodiments, the first cover portion 111 and the second cover portion 121 may be provided with a groove to enable the first cover portion 111 and the second cover portion 121 to have a cushioning deformation capability.

In the present embodiment, the rotating body 190 includes a set of rings 200 and a rotating ball 300. The collar 200 is located in the accommodating space 130. The collar 200 has an annular flange 210 and two pivot holes 220. The annular flange 210 is located on the outer wall surface of the collar 200, and the annular flange 210 is slidably disposed in the annular groove 142. The two pivot holes 220 are positioned opposite each other. The rotating ball 300 is located in the accommodating space 130. The rotating ball 300 includes a ball 310 and a shaft 320. The shaft body 320 has a bearing section 321 and two pivoting sections 322. The bearing section 321 is connected between the two pivoting sections 322, and the pivoting diameter of the pivoting section 322 is smaller than the axial diameter of the supporting section 321 . The carrier section 321 extends through the sphere 310. The two pivoting sections 322 protrude from the ball 310 and are pivotally connected to the pivot hole 220 relative to the rotation of the collar 200.

The initial deformation force value of the buffer portion 105 should be designed to be larger than the weight of the rotating ball 300 itself. Amount to avoid unnecessary shaking of the rotating ball 300 during rotation, thereby affecting the wrist ball 10 Use quality. For example, the initial force value of the deformation of the buffer portion 105 may be 5 kg, that is, when the outer casing 100 is pressed by a force greater than 5 kg, the buffer portion 105 starts to deform. Further, when the outer casing 100 is pressed by a force greater than 21 kg, the amount of deformation of the buffer portion 105 reaches or is greater than the maximum distance between the sphere 310 and the outer casing 100. The external force value of the deformation initial force value of the buffer portion 105 and the deformation amount of the buffer portion 105 is greater than or equal to the distance between the spherical body 310 and the outer casing 100. The force value is merely an example and is not intended to limit the present invention.

It is worth noting that the research and development personnel usually need to accurately configure the shaft body 320 and the ring. The contact position and contact area between the grooves 142 prevent the wrist ball 10 from unintended noise and affect the user's training. However, if the shaft body 320 is bent and deformed, the relative relationship between the shaft body 320 and the annular groove 142 may be changed to affect the quality of use of the wrist ball 10. Therefore, how to avoid bending deformation of the shaft body 320 is more important. Next, how the buffer portion 105 reduces the degree of bending deformation of the shaft body 320 or the bending deformation of the shaft body 320 will be described next when the wrist ball 10 encounters an impact.

Please refer to Figures 4A to 5B. Figure 5A and Figure 5B are the first A schematic view of the impact of the wrist ball of the figure.

As shown in Figures 4A and 4B, when the wrist ball 10 is not hit, due to The weight (300 gram) of the sphere 310 of the present embodiment is smaller than the initial deformation force of the first buffer body 112 and the second buffer body 122 (for example, 5 kg), so the first buffer body 112 and the second buffer body 122 have not yet started. The deformation allows the wrist ball 10 to retain its original quality of use. The initial deformation force values of the first buffer body 112 and the second buffer body 122 are the critical stress values at which the first buffer body 112 and the second buffer body 122 are initially deformed.

Next, the case where the wrist ball 10 does not fall down and hits the ground will be described. Such as the first 5A and 5B, when the wrist ball 10 falls to the ground, an impact force F is generated in the outer casing 100. The impact point of this embodiment is exemplified by the second cover portion 121 located in the second housing 120. When the second cover portion 121 of the second housing 120 is subjected to impact and the impact force F is greater than the initial deformation force of the second buffer body 122, the rail portion 140 makes the sphere according to the elastic buffer deformation capability of the second buffer body 122. The 310 and the shaft body 320 are collectively moved in the direction of the second cover portion 121.

In detail, the impact process of the wrist ball 10 is divided into two stages. the first When the ball 310 has not touched the outer casing 100, the rail portion 140 moves the shaft body 320 and the ball 310 together according to the cushioning deformation capability of the second buffer body 122, thereby preventing the impact stress from being concentrated on the pivoting portion 322 and the carrying portion 321 The junction. Therefore, at this stage, the impact force of the shaft body 320 can be shared by the elastic cushioning deformation capability of the second buffer body 122, thereby reducing the degree of bending shape energy of the shaft body 320.

In the second stage, when the sphere 310 has contacted the outer casing 100, the outer casing can be additionally penetrated. 100 to support the weight of the ball 310, thereby reducing the radial external force experienced by the shaft 320 to avoid bending or breaking of the shaft 320.

After the actual measurement (taking the weight of the wrist ball as 0.3 kg), when the wrist of this embodiment The ball 10 is dropped from the one-meter position to the ground. Since the buffer bodies 112, 122 of the wrist ball 10 of the present embodiment can reduce the rigidity of the outer casing 100, the impact time of the wrist ball 10 can be extended (from 6.5 milliseconds). Up to 8.5 milliseconds), and the impact force F is effectively reduced from 204.46 kg-m (kg-m) to 156.35 kg-m (kg-m).

Furthermore, due to the impact force F (156.35 kg-m) The value is still greater than the initial deformation force value (5 kg) of the second buffer body 122, so that the impact stress of the shaft body 320 can be further reduced by the buffer deformation capability of the second buffer body 122, thereby avoiding the shaft body 320. Bending or breaking due to impact.

In addition, the impact point is located in the second cover portion 121 of the second housing 120, But it is not limited to this. In other embodiments, the impact point may also be located at the first cover portion 111 of the first housing 110 or the combined circumference of the first housing 110 and the second housing 120. Wherein, when the impact point is located in the first cover portion 111 of the first housing 110, the buffering principle of the wrist ball 10 and the impact point are located in the second cover portion 121 of the second housing 120, the buffering principle of the wrist ball 10 is the same, Therefore, it will not be repeated. It is worth mentioning that when the impact point is located at the joint circumference of the first housing 110 and the second housing 120, since the middle portion of the outer casing 100 has the hollow structures 112a, 122a, the housing is not provided with the hollow structure 112a. The outer casing 100 having the hollow structure 112a has better flexibility and deformability, so that the outer casing 100 can also provide sufficient cushioning deformation to allow the spherical body 310 to abut against the outer casing 100, thereby allowing the outer casing 100 to assist the sharing of the shaft body 320. The impact stress, in turn, prevents the shaft body 320 from being bent or broken due to impact.

In addition, since the first recessed portion 113 and the second recessed portion 123 are combined structures, When the annular groove 142 formed by the first recess 113 and the second recess 123 is worn by the friction or severe impact of the shaft 320, the user only needs to use the new first combination ring 113b and the second combination ring 123b. The worn first combination ring 113b and the second combined ring 123b are replaced to prevent the user from repurchasing a wrist ball due to wear of the annular groove 142.

The first buffer body 112 and the second buffer body 122 have two layers of hollowing out The structure 112a and the two-layer hollow structure 122a are not limited thereto. In other embodiments, the first buffer body 112 may have a single-layer hollow structure 112a or three or more hollow structures 112a. Please refer to Figures 6 to 8. Fig. 6 is a plan view showing the outer casing of the wrist ball according to the second embodiment of the present invention. Figure 7 is a plan view showing the outer casing of a wrist ball according to a third embodiment of the present invention. Figure 8 is a plan view showing the outer casing of a wrist ball according to a fourth embodiment of the present invention. number 6 The embodiment of the drawing to Fig. 8 is similar to the embodiment of Fig. 1, and therefore only the differences will be described.

As shown in FIG. 6, the first buffer body 112 and the second buffer body of this embodiment 122 has a single layer hollow structure 112a and a single layer hollow structure 122a, respectively. The hollow structures 112a, 122a have a plurality of hollow sections 112b, 122b and a plurality of support sections 112c, 122c, respectively. The hollow sections 112b, 122b and the support sections 112c, 122c are staggered and surround the circumference of the sphere 310. The direction in which the hollow sections 112b, 122b extend is parallel to the annular groove 142.

As shown in FIG. 7, the first buffer body 112 and the second buffer body of this embodiment 122 has a single layer hollow structure 112a and a single layer hollow structure 122a, respectively. The hollow structures 112a, 122a have a plurality of hollow sections 112b, 122b and a plurality of support sections 112c, 122c, respectively. The hollow sections 112b, 122b and the support sections 112c, 122c are staggered and surround the circumference of the sphere 310. The direction in which the hollow sections 112b, 122b extend is perpendicular to the annular groove 142.

As shown in FIG. 8, the first buffer body 112 and the second buffer body of this embodiment 122 has a single layer hollow structure 112a and a single layer hollow structure 122a, respectively. The hollow structures 112a, 122a have a plurality of hollow sections 112b, 122b and a plurality of support sections 112c, 122c, respectively. The hollow sections 112b, 122b and the support sections 112c, 122c are staggered and surround the circumference of the sphere 310. The direction in which the hollow sections 112b, 122b extend intersects the annular groove 142 at an acute angle.

The first buffer body 112 and the second buffer body 122 respectively have a hollow structure 112a, 122a, but not limited thereto, in other embodiments, the first buffer body 112 and the second buffer body 122 can also be made of a material with a cushioning effect. Please refer to FIG. 9. FIG. 9 is a plan view showing the outer casing of the wrist ball according to the fifth embodiment of the present invention. The material of the first buffer body 112 and the second buffer body 122 in this embodiment is a rubber, but is not limited thereto.

The hollow portion 112b of the first buffer body 112 and the second buffer body 122, The number of 122b and the support sections 112c and 122c are each exemplified by three, but are not limited thereto. Referring to FIG. 10, FIG. 10 is a cross-sectional view showing a buffer structure of a first housing of a wrist ball according to a sixth embodiment of the present invention. The number of the hollow sections 112b and 122b and the support sections 112c and 122c of the first buffer body 112 and the second buffer body 122 of the present embodiment are each exemplified by six.

In addition, the left and right sides of the support section 112c of the embodiment are configured by the first housing 110. The outer wall surface is tapered toward the inner wall surface, but is not limited thereto. In other embodiments, the left and right sides of the support section 112c may be parallel to each other or may be gradually expanded from the outer wall surface of the first housing 110 toward the inner wall surface.

The first combination groove 113a and the first combination ring 113b are combined, but Without being limited thereto, in other embodiments, the first combination groove 113a and the first combination ring 113b are in an integrally formed form. Please refer to Figure 11. Figure 11 is an exploded perspective view of a wrist force ball according to a seventh embodiment of the present invention. The first recessed portion 113 and the second recessed portion 123 of the embodiment are integrally formed.

In addition, the wrist ball 10 of the embodiment further includes a protective collar 400. protection The collar 400 is detachably sleeved on the buffer portion 105 of the outer casing 100 to provide a user with a comfortable wearing feel.

The first recess 113 of the embodiment further includes a first combination slot 113a and a first A combination ring 113b, the first combination ring 113b is detachably provided in the first combination groove 113a to constitute the first concave portion 113. Similarly, the second recess 123 further includes a second combination groove 123a and a second combination ring 123b. The second combination ring 123b is detachably disposed in the second combination groove 123a to constitute the second concave portion 123. In this way, when the annular groove 142 formed by the first recess 113 and the second recess 123 is worn by the friction or impact of the shaft 320, the new first combined ring 113b and the second combined ring 123b can be replaced. In order to avoid the wear of the annular groove 142 and affect the use of the wrist ball 10.

According to the wrist ball and the outer casing disclosed in the above invention, the track portion is based on The elastic buffer deformation ability of the buffer portion drives the shaft body to move together with the ball body to prevent the impact stress from being concentrated at the intersection of the pivot joint portion and the load bearing portion. Therefore, the impact force of the shaft body can be shared by the elastic cushioning deformation ability of the buffer portion, and the shaft body can be prevented from being bent or broken by the impact.

In addition, when the sphere contacts the outer casing, the outer casing can assist in supporting the weight of the sphere to drop The impact force of the low axle body. Therefore, the outer casing can share the impact stress of the shaft body by the buffer portion of the outer casing.

The first recess and the second recess adopt a separate combination groove and a combination ring to make When the annular groove formed by the first concave portion and the second concave portion is worn by the friction or impact of the shaft body, the user only needs to replace the worn first combined ring with the new first combined ring and the second combined ring. The second combination ring prevents the user from repurchasing a wrist ball due to the wear of the annular groove.

Although the embodiments of the present invention are disclosed above, it is not intended to limit the present invention, and those skilled in the art, regardless of the spirit and scope of the present invention, the shapes, configurations, and features described in the scope of the present application. And the number of modifications may be made, and the scope of patent protection of the present invention shall be determined by the scope of the patent application attached to the specification.

10‧‧‧Wrist Ball

105‧‧‧ buffer

111‧‧‧First cover

112‧‧‧First buffer

112a‧‧‧ hollow structure

112b‧‧‧镂空段

112c‧‧‧Support section

113b‧‧‧ first combination ring

121‧‧‧Second cover

122‧‧‧Second buffer

122a‧‧‧ hollow structure

122b‧‧‧镂空段

122c‧‧‧Support section

123b‧‧‧Second combination ring

130‧‧‧ accommodating space

140‧‧‧Track Department

141‧‧‧ inner wall

142‧‧‧ annular groove

200‧‧‧ collar

220‧‧‧ pivot hole

321‧‧‧ Carrying section

322‧‧‧ pivotal section

Claims (24)

A wrist ball includes: a casing having a buffer portion, the buffer portion having a track portion and a buffer body, the buffer body being located adjacent to the track portion, the track portion having an inner wall surface and an annular groove The inner wall faces the rotating ball, and the annular groove is located on the inner wall surface; and a rotating body comprises: a ring in the outer casing, the collar has an annular flange, the annular flange slidably And a rotating ball, comprising a ball body and a shaft body, the ball body is located in the outer casing, the shaft body runs through the ball body, and opposite ends of the shaft body are respectively rotatable relative to the ring ring The method is pivotally connected to the collar; wherein the buffer body has a plurality of hollow sections and a plurality of support sections, and the hollow sections and the support sections are staggered and surround the circumference of the sphere, and the extension direction of the hollow sections Parallel to the annular groove. A wrist ball includes: a casing having a buffer portion, the buffer portion having a track portion and a buffer body, the buffer body being located adjacent to the track portion, the track portion having an inner wall surface and an annular groove The inner wall faces the rotating ball, and the annular groove is located on the inner wall surface; and a rotating body comprises: a ring in the outer casing, the collar has an annular flange, An annular flange is slidably disposed in the annular groove; and a rotating ball includes a ball body and a shaft body, the ball body is located in the outer casing, the shaft body extends through the ball body, and opposite ends of the shaft body are respectively opposite The sleeve is pivotally connected to the collar; wherein the buffer body has a plurality of hollow sections and a plurality of support sections, and the hollow sections and the support sections are staggered and surround the circumference of the sphere, The extension direction of the hollow sections is perpendicular to the annular groove. A wrist ball includes: a casing having a buffer portion, the buffer portion having a track portion and a buffer body, the buffer body being located adjacent to the track portion, the track portion having an inner wall surface and an annular groove The inner wall faces the rotating ball, and the annular groove is located on the inner wall surface; and a rotating body comprises: a ring in the outer casing, the collar has an annular flange, the annular flange slidably And a rotating ball, comprising a ball body and a shaft body, the ball body is located in the outer casing, the shaft body runs through the ball body, and opposite ends of the shaft body are respectively rotatable relative to the ring ring The method is pivotally connected to the collar; wherein the buffer body has a plurality of hollow sections and a plurality of support sections, and the hollow sections and the support sections are staggered and surround the circumference of the sphere, and the extension direction of the hollow sections An acute angle is intersected with the annular groove. A wrist ball that contains: An outer casing has a buffer portion having a rail portion adjacent to the rail portion, and a buffer portion having an inner wall surface and an annular groove facing the rotation a ball, and the annular groove is located on the inner wall surface; and a rotating body comprising: a ring in the outer casing, the collar having an annular flange, the annular flange being slidably disposed in the annular groove And a rotating ball, comprising a ball body and a shaft body, the ball body is located in the outer casing, the shaft body runs through the ball body, and opposite ends of the shaft body are respectively pivotally connected to the sleeve with respect to the rotation of the ring body a ring body; wherein the buffer body has a two hollow structure, the two hollow structures are arranged side by side, and each of the hollow structures has a plurality of hollow sections and a plurality of support sections, and the hollow sections and the support sections are staggered and surround The periphery of the sphere, the position of each of the support segments of one of the two hollow structures respectively corresponds to each of the hollow segments of the other of the two hollow structures. The wrist ball of claim 4, wherein the hollow segments extend in a direction parallel to the annular groove. The wrist ball of any one of claims 1 to 4, wherein the rail portion can move the ball and the shaft body together according to the elastic cushioning deformation capability of the cushion body. The wrist ball of any one of claims 1 to 4, wherein the outer casing has a first cover portion and a second cover portion, the track portion being coupled to the buffer body Between the first cover portion and the second cover portion, and the buffer body is located between the track portion and the first cover portion, the outer casing includes a first casing and a second casing, the first casing The edge has a first recess, the first cover portion and the buffer body are located in the first housing, and the buffer body is located between the first cover portion and the first recess portion, and the edge of the second housing has a second recessed portion, the second cover portion is located in the second housing, the first housing is mounted on the second housing to form an accommodating space, and the first recess and the second recess constitute the rail The annular groove of the portion, the collar and the rotating ball are located in the accommodating space. The wrist ball of claim 7, wherein the first recess further comprises a first combination groove and a first combination ring, and the first combination ring is detachably disposed in the first combination groove. The wrist ball of claim 8, wherein the second recess further comprises a second combination groove and a second combination ring, and the second combination ring is detachably disposed in the second combination groove. The wrist ball of any one of claims 1 to 4, wherein the buffer body has a maximum buffer displacement greater than or equal to a pitch of the sphere to the outer casing. A wrist ball includes: a casing having a buffer portion, the buffer portion having a track portion, a first buffer body and a second buffer body, wherein the track portion is located in the first buffer body and the second buffer body And the rail portion is adjacent to the first buffer body and the second buffer body, the rail portion has an inner wall surface and an annular groove, the inner wall surface faces the rotating ball, and the annular groove is located on the inner wall surface; as well as a rotating body comprising: a ring disposed in the outer casing and slidably disposed on the rail portion; and a rotating ball including a ball body and a shaft body, the ball body being located in the outer casing, the shaft body penetrating the ball body And the opposite ends of the shaft body are respectively pivotally connected to the collar in a manner of rotating relative to the collar; wherein the first buffer body and the second buffer body each have a plurality of hollow sections and a plurality of support sections, The hollow sections and the support sections are staggered and surround the circumference of the sphere, and the hollow sections extend in parallel with the annular groove. A wrist ball includes: a casing having a buffer portion, the buffer portion having a track portion, a first buffer body and a second buffer body, wherein the track portion is located in the first buffer body and the second buffer body And the rail portion is adjacent to the first buffer body and the second buffer body, the rail portion has an inner wall surface and an annular groove, the inner wall surface faces the rotating ball, and the annular groove is located on the inner wall surface; And a rotating body comprising: a ring disposed in the outer casing and slidably disposed on the rail portion; and a rotating ball including a ball and a shaft body, the ball being located in the outer casing, the shaft body penetrating the spherical body And the opposite ends of the shaft body are respectively pivotally connected to the collar in a manner of rotating relative to the collar; The first buffer body and the second buffer body each have a plurality of hollow sections and a plurality of support sections, and the hollow sections and the support sections are staggered and surround the circumference of the sphere, and the extensions of the hollow sections The direction is perpendicular to the annular groove. A wrist ball includes: a casing having a buffer portion, the buffer portion having a track portion, a first buffer body and a second buffer body, wherein the track portion is located in the first buffer body and the second buffer body And the rail portion is adjacent to the first buffer body and the second buffer body, the rail portion has an inner wall surface and an annular groove, the inner wall surface faces the rotating ball, and the annular groove is located on the inner wall surface; And a rotating body comprising: a ring disposed in the outer casing and slidably disposed on the rail portion; and a rotating ball including a ball and a shaft body, the ball being located in the outer casing, the shaft body penetrating the spherical body And the opposite ends of the shaft body are respectively pivotally connected to the collar in a manner of rotating relative to the collar; wherein the first buffer body and the second buffer body each have a plurality of hollow sections and a plurality of support sections, The hollow sections and the support sections are staggered and surround the circumference of the rotating body, and the extending directions of the hollow sections intersect the annular groove at an acute angle. A wrist ball includes: a casing having a buffer portion, the buffer portion having a track portion, a a first buffer body and a second buffer body, the track portion is located between the first buffer body and the second buffer body, and the track portion is adjacent to the first buffer body and the second buffer body, and the track portion has An inner wall surface and an annular groove facing the rotating ball, wherein the annular groove is located on the inner wall surface; and a rotating body comprising: a ring disposed in the outer casing and slidably disposed on the track And a rotating ball comprising a ball and a shaft body, the ball is located in the outer casing, the shaft body extends through the ball body, and opposite ends of the shaft body are pivotally connected to the ring body respectively a collar; wherein the first buffer body and the second buffer body each have a two hollow structure, the two hollow structures are arranged side by side, and each of the hollow structures has a plurality of hollow sections and a plurality of support sections, and the hollow sections and The support segments are staggered and surround the circumference of the sphere, and the positions of the support segments of one of the two hollow structures respectively correspond to the positions of the hollow portions of the other of the two hollow structures. The wrist ball of claim 14, wherein the hollow segments extend in a direction parallel to the annular groove. The wrist ball of any one of claims 11 to 14, wherein the outer casing has a first cover portion and a second cover portion, the track portion, the first buffer body and the second buffer body are coupled to the wrist ball Between the first cover portion and the second cover portion, and the track portion is located between the first buffer body and the second buffer body, the outer casing The first housing and the second housing have a first recess, the first cover and the first buffer are located in the first housing, and the first buffer Located between the first cover portion and the first recess, the edge of the second housing has a second recess, the second cover portion and the second buffer body are located in the second housing, and the second buffer The first housing is disposed in the second housing to form an accommodating space, and the first recess and the second recess constitute the rail portion. The annular groove, the collar and the rotating ball are located in the accommodating space. The wrist ball of any one of claims 11 to 14, wherein the sum of the maximum cushion displacement of the first buffer body and the second buffer body is greater than or equal to the distance from the sphere to the outer casing. An outer casing of a wrist ball includes: a first housing, a first cover portion connected to the first buffer portion, a first buffer portion and a first recess portion, wherein the first buffer portion is located at the first cover portion and the first recess portion And a second housing including a second cover portion, a second buffer portion and a second recess portion, the second buffer body being located between the second cover portion and the second recess portion, The second housing is disposed on the first housing to form an accommodating space, and the first recess and the second recess form a rail portion having an inner wall surface and an annular groove, the inner wall surface Facing the accommodating space, and the annular groove is located at the inner wall surface; wherein the track portion is adjacent to the first buffer body and the second buffer body, The first buffer body and the second buffer body each have a plurality of hollow sections and a plurality of support sections, and the hollow sections and the support sections are staggered, and the extension directions of the hollow sections are parallel to the annular groove. An outer casing of a wrist ball includes: a first housing, a first cover portion connected to the first buffer portion, a first buffer portion and a first recess portion, wherein the first buffer portion is located at the first cover portion and the first recess portion And a second housing including a second cover portion, a second buffer portion and a second recess portion, the second buffer body being located between the second cover portion and the second recess portion, The second housing is disposed on the first housing to form an accommodating space, and the first recess and the second recess form a rail portion having an inner wall surface and an annular groove, the inner wall surface Or facing the accommodating space, and the annular groove is located at the inner wall surface; wherein the track portion is adjacent to the first buffer body and the second buffer body, and the first buffer body and the second buffer body each have a plurality of hollow spaces And a plurality of supporting segments, the hollow segments and the supporting segments are staggered, and the extending directions of the hollow segments are perpendicular to the annular grooves. An outer casing of a wrist ball includes: a first housing, a first cover portion connected to the first buffer portion, a first buffer portion and a first recess portion, wherein the first buffer portion is located at the first cover portion and the first recess portion And a second housing comprising a second cover portion and a second buffer body a second recessed portion is disposed between the second cover portion and the second recessed portion, the second housing is mounted on the first housing to form an accommodating space, and the first recessed portion Forming a rail portion with the second recess portion, the rail portion having an inner wall surface and an annular groove, the inner wall surface facing the receiving space, wherein the annular groove is located on the inner wall surface; wherein the rail portion is adjacent to the first portion a buffer body and the second buffer body, the first buffer body and the second buffer body each have a plurality of hollow sections and a plurality of support sections, and the hollow sections and the support sections are staggered, and the hollow sections are The extending direction intersects the annular groove at an acute angle. An outer casing of a wrist ball includes: a first housing, a first cover portion connected to the first buffer portion, a first buffer portion and a first recess portion, wherein the first buffer portion is located at the first cover portion and the first recess portion And a second housing including a second cover portion, a second buffer portion and a second recess portion, the second buffer body being located between the second cover portion and the second recess portion, The second housing is disposed on the first housing to form an accommodating space, and the first recess and the second recess form a rail portion having an inner wall surface and an annular groove, the inner wall surface Or facing the accommodating space, wherein the annular groove is located on the inner wall surface; wherein the track portion is adjacent to the first buffer body and the second buffer body, and the first buffer body and the second buffer body each have a hollow structure The two hollow structures are side by side with each other, and each of the hollow structures has a plurality of hollow sections and a plurality of The support segments, the hollow segments and the support segments are staggered, and the positions of the support segments of one of the two hollow structures respectively correspond to the hollow portions of the other of the two hollow structures. The outer casing of the wrist ball of claim 21, wherein the hollow segments extend in a direction parallel to the annular groove. The outer casing of the wristball of any one of claims 18 to 21, wherein the first recess further comprises a first combination groove and a first combination ring, the first combination ring being detachably disposed on the first A combination slot. The outer casing of the wrist ball of claim 23, the second recess further includes a second combination groove and a second combination ring, and the second combination ring is detachably disposed in the second combination groove.