GB2515653A

GB2515653A - Wrist exerciser having a protective structure

Info

Publication number: GB2515653A
Application number: GB1410991.2A
Authority: GB
Inventors: Pei-Sung Chuang
Original assignee: Nano Second Technology Co Ltd
Current assignee: Nano Second Technology Co Ltd
Priority date: 2013-06-25
Filing date: 2014-06-20
Publication date: 2014-12-31
Anticipated expiration: 2034-06-20
Also published as: GB2515653B; GB201504684D0; GB201410991D0; GB2521782A; TW201500080A; TWI520760B

Abstract

A wrist exerciser 10 including a housing 100 and a gyroscopic member 190 is disclosed. The housing 100 has a protective assembly 105 comprising a rail 140 and a buffer portion 112 and 122. The gyroscopic member includes a ring 200 and a rotor 300. The rotor includes a ball 310 and a shaft 320. Also included is a wrist exerciser where there are two buffer portions with the rail being between the two portions. Also included is a wrist exerciser with a shell comprising a first and second cover 111 and 121, a first and second buffer portion and a first and second rail 113 and 123 where the buffer portions are connected between the covers and the rails. Also included is a wrist exerciser where the casing is provided with a number of channels or slots 112b and 122b that penetrate through the casing forming a buffer against impact forces.

Description

WRIST EXERCISER HAVING A PROTECTIVE STRUCTURE

TECIINICAL FIELD

100011 This patent document relates to a wrist exerciser having a gyroscope.

BACKGROUND

100021 A wrist exerciser can be designed as an article to be held in a user's palm and rotated with the user's wrist. Some wrist exercisers utilize the principle of a gyroscope to create a resistance to the user's wrist motion for exercise. Such wrist exercisers may only need a starting force and/or torque to initiate rotating of the gyroscope. For example, a user can initiate spinning the gyroscope, e.g., such as by using a rope or a pin that is initially set in the gyroscope and pulled by the user, and/or auto-start the gyroscope by generating an initial auxiliary starting force (e.g., such as by using an auxiliary starting force mechanism, like that described in U.S. Patent No. 7,381,155). After the gyroscope starts spinning, the user can accelerate spinning with forces applied by the wrist, thereby exercising related muscles, Depending on the applied forces, the wrist exerciser can generate a high rotation speed, e.g., greater than 10,000 revolutions per minute (rpm). The higher the rotation speed is, the stronger resistance would be created, which contributes to strengthening the user's wrist and arm, SUIS'JINL&RY 10003] In one aspect, a wrist exerciser includes a housing and a gyroscope member, The housing includes a protective part, in which the protective part includes a rail and a buffer portion, where the position of the buffer portion corresponds to the rail. The gyroscopic member is moveably disposed on the rail, in which the gyroscope member is structured to include a ring configured inside the housing, in which the ring being slidably disposed at the rail, and a rotor including a ball and a shaft, in which the ball is configured inside the housing and the shaft penetrates the ball, the two opposite ends of the shaft being connected to the two opposite sides of the ring for the shaft to rotate relatively to the ring.

10004] In another aspect, a wrist exerciser includes a housing and a gyroscope member.

The housing includes a protective part, in which the protective part includes a rail and two buffer portions, where the rail is positioned between the buffer portions. The gyroscopic member is moveably disposed on the rail, in which the gyroscope member is structured to include a ring configured inside the housing, in which the ring being slidably disposed at the rail, and a rotor including a ball and a shaft, in which the ball is configured inside the housing and the shaft penetrates the ball, the two opposite ends of the shaft being connected to the two opposite sides of the ring for the shaft to rotate relatively to the ring.

100051 In another aspect, a housing of a wrist exerciser includes a first shell and a second shell. The first shell includes a first cover, a first buffer portion, and a first rail connected to each other, in which the first buffer portion is between the first cover and the first rail. The second shell includes a second cover, a second buffer portion, and a second rail connected to each other, in which the second buffer portion is between the second cover and the second rail.

The second shell and the first shell are attachable to each other so as to form an interior space that can accommodate a gyroscope. The first rail and the second rail, when the first shell and the second shell are attached, form a rail that supports the gyroscope and protects the gyroscope 1 5 from damage.

100061 In another aspect, a wrist exerciser includes a deforniable housing and a gyroscope member. The deformable housing is structured to include a casing structure, a rail, and two or more channels along a direction of the casing structure, in which the channels penetrate through the casing structure forming an empty space. The gyroscopic member is configured to be moveably disposed on the rail, and includes a ring and a rotor. The ring is configured inside the deformable housing, and configured to be slidably disposed at the rail. The rotor includes a ball and a shaft, in which the ball is configured inside the deformable housing, the shaft penetrates the ball, and the two opposite ends of the shaft are connected to the two opposite sides of the ring for the shaft to rotate relatively to the ring. The deformable housing is structured to absorb mechanical force to protect the structure and functionality of the wrist exerciser.

100071 The buffcr portions arc configurcd to provide a buffcr region of the housing to absorb mechanical force or shock, e.g., such as a force exerted when the wrist exerciser is dropped.

Accordingly, the buffer portions operate to protect the structure and functionality of the wrist exerciser.

100081 Those and other aspects and associated implementations and features of disclosed wrist exerciser designs are described in greater detail in the drawings, the description and the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

100091 The disdosed wrist exerciser designs will become more fully understood from the detailed description given herein below along with the accompanying drawings which are for illustration only, thus are not limitative of the disclosed wrist exerciser designs.

100101 FIG. 1 shows a perspective view of a wrist exerciser according to au exemplary embodiment of the disclosed wrist exerciser designs.

100111 FIG. 2 shows an expanded view of FIG. 1.

100121 FIG. 3 shows a sectional view of a protective structure of the first shell of FIG. 1.

100131 FIGS. 4Aand4B show sectional views of FIG. 1.

100141 FIGS. 5A and SB show sectional views of a wrist exerciser when being impacted.

100151 FIG. 6 shows a side view of a housing of a wrist exerciser according to an exemplary embodiment of the disclosed wrist exerciser designs.

100161 FIG. 7 shows a side view of a housing of a wrist exerciser according to an exempaiy embodiment of the disclosed wrist exerciser designs.

10017] FIG. 8 shows a side view of a housing of a wrist exerciser according to an exemplary embodiment of the disclosed wrist exerciser designs.

10018] FIG. 9 shows a side view of a housing of a wrist exerciser according to an exemplary embodiment of the disclosed wrist exerciser designs.

100191 FIG. 10 shows a sectional view of a protective structure of a first shell of a wrist exerciser according to an exemplary embodiment of the disclosed wrist exerciser designs.

100201 FIG. 11 shows an expanded view of a wrist exerciser according to an exemplary embodiment of the disclosed wrist exerciser designs.

100211 FIG. I 2A shows a side view of a diagram depicting an exemplary protective structure of the disclosed wrist exerciser designs.

100221 FIG. I 2B shows an expanded view of buffer part Ii 2a (including ii 2b and Ii 2c) shown inFIG. 12A.

100231 FIG. 13 shows a cross-sectional view of an exemplary embodiment of the wrist exerciser where a protective structure is not integrally formed with the housing.

100241 FIG. 14 shows an exploded view of the embodiment as illustrated in FIG. 13.

100251 FIG. 15 shows a cross-sectional view of an exemplary embodiment of the wrist exerciser where supporting rings are embedded inside a protective structure.

100261 FIG. 16 shows an exploded view of the embodiment as illustrated in FIG. 15.

10027] Like reference symbols and designations in the various drawings indicate like elements.

DETAILED DESCRIPTION

10028] The basic structure of a wrist exerciser generally includes a housing, a ring, and a gyroscope. The ring is slidably disposed on a rail formed around the inner circumference of the housing. In some designs, the gyroscope includes a shaft formed in alignment with the axis of the gyroscope. Each end of the shaft connects to the ring, allowing the gyroscope to rotate along the rail. Sonic examples of wrist exercisers depicting the structure and corresponding technical functions of these components and the overall wrist exerciser are described in U.S. Patent 8,449,436, U.S. Patent 7,846,066, U.S. Patent 5,800,311, and US. Patent 6,186,914, of which the entire disclosure of these aforementioned US patents are incorporated by reference as part of the disclosure of this patent document; and in US Design Patent D464,687, as well as Taiwan Patent No. 364,383.

100291 In such designs, because the entire weight of the gyroscope is supported by the shaft at its two ends, the shaft is prone to fracture or distortion that may be caused by motions or forces due to external impacts or other actions or events. For example, one cause may include a user's accidental dropping of the wrist exerciser on the ground or other solid surfaces. If the shaft is distorted, the units (including, e.g., the housing, shaft and ring) of the wrist exerciser would be moved off their original positions, thus causing noise and vibration during use. And if the shaft is fractured, the wrist exerciser may not function at all. Therefore, a wrist exerciser of an improved structure is needed that prevents the shaft from various external impacts.

100301 Disclosed are wrist exerciser designs having housing or casing structures that protect the components of the wrist exerciser from being impacted by external forces. The disclosed housing and/or casing sfructures of the wrist exercisers remedy deficiencies of various other wrist exercisers.

100311 In one aspect of the disclosed wrist exerciser designs, a wrist exerciser includes a housing, a gyroscope, and a ring, in which the housing is structured to include a casing structure that protects the shaft from being impacted by external forces. The housing includes a protective assembly, which includes a rail and a buffer portion. The position of the buffer portion corresponds to that of the rail.

100321 The gyroscopic member is placed inside the housing and includes a rotor and a ring.

The rotor includes a shaft formed in alignment with the axis of the rotor, The two opposite ends of the shaft are rotatably connected to the ring, thereby allowing the rotor to rotate about the shaft. The ring is movably disposed at the rail that is formed around the inner circumference of the housing. Such structure allows the rotor and the ring to rotate about the axis of the ring when moving around at the rail.

100331 in some embodiments, the buffer portion includes a first buffer portion and a second buffer portion. The rail is located between the first buffer portion and the second buffer portion.

As the shaft of the rotor is disposed at the rail, the shaft is protected by the first buffer portion and the second buffer portion from external impacts. For example, an abrupt force (that may be caused by the wrist exerciser dropping on the ground) can be absorbed by the buffer zone, thereby minimizing the impact to the shaft. in reality, the outside force exerted to the housing of the wrist exerciser may be in various directions, The elasticity of the buffer portions can shield the shaft from being directly contacted or impacted by the outside force exerted to the housing and thus reduce the adverse effect of the outside force.

100341 in some embodiments, the housing of the wrist exerciser includes a first shell and a second shell, The first shell comprises a first cover, a first buffer portion, and a first rail that are integrally formed as one piece. The first buffer portion is located between the first cover and the first rail, The second shell comprises a second cover, a second buffer portion, and a second rail that are integrally formed as one piece. The second buffer portion is located between the second cover and the second rail, The second shell is combined with the first shell to form the housing of the wrist exerciser, The first rail and the second rail are combined to form the entire rail of the wrist exerciser.

100351 FIG. 1 through FIG. 4B show diagrams of various views of an exemplary wrist exerciser having a protective casing structure according to the disclosed technology. FIG. 1 shows a perspective view of the wrist exerciser depicting a first embodiment of the disclosed protective feature. FIG. 2 shows an exploded view of FIG. 1. FIG. 3 shows a sectional view of a protective structure of the first shell of FIG. 1, FIGS, 4A and 4B show sectional views of FIG. 1.

10036] In this exemplary embodiment shown in FIGS. 1-4B, the wrist exerciser 10 comprises a housing 100 and a gyroscopic member 190. The housing 100 is structured to include a first shell 110 and a second shell 120. The first shell 110 includes a first cover 111, a first buffer portion 112, and a first rail 113. The buffer portions of the housing 100 (e.g., the first buffer portion 112 of the first shell 110 and a second buffer portion 122 of the second shell 120) can be configured as one or more sets of channels along a direction of the shell casing of the housing 100, e.g., such as a latitude direction, a longitude direction, a diagonal direction, etc. The channels of the buffer portions can be configured to penetrate through the shell casing of the housing 100 forming a void or empty space while the shell casing is formed as one piece. Tn some exemplary embodiments where the channels span along the latitude direction, for example, each channel extends a distance less than the circumference of its respective latitude, and a portion of respective channels are configured to overlap with respect to a longitudinal coordinate.

The buffer portions are configured to provide a buffer region of the housing 100 to absorb mechanical force or shock, e.g., such as a force exerted when the wrist exerciser 10 is dropped.

Accordingly, the buffer portions operate to protect the structure and functionality of the wrist exerciser 10.

10037] In sonic embodiments, the first buffer portion 112 is between the first cover ill and the first rail 113. Whereas, in some embodiments, the first cover Ill is between the buffer portion 112 and the first rail 113. The structure of the second shell 120 can be configured to be similar to the first shell 110. The second shell 120 includes a second cover 121, a second buffer portion 122, and a second rail 123. In some embodiments, the second buffer portion 122 is between the second cover 121 and the second rail 123. The second rail 123 can be coupled to the first rail 113 so that a protective assembly 105 of the housing 100 is formed by the first buffer portion 112, a rail 140 and the second buffer portion 122.

10038] The gyroscopic member 190 is movably disposed in the housing 100, where at least one portion of the gyroscope member 190 is coupled to the rail 140 such that the gyroscope member 190 is permitted to move along the rail 140.

[0039] In some embodiments of the buffer portions, for example, the first buffer portion 112 has two rows of buffer parts 11 2a that are arranged side by side to each other in its surface and are parallel to the first rail 113, Tn this exemplary embodiment, each of the buffer parts I12a surrounds the gyroscopic member 190 and has a plurality of slot sections 11 2b and a plurality of isthmuses 1 I 2c, and the two adjacent slot sections Ii 2b are spaced by one isthnius 11 2c. One of the buffer parts 1 12a is offset with respect to the other buffer parts 1 12a such that each of the isthmuses 1 12c of the buffer parts 1 12a is aligned with (corresponds to) each of the slot sections 1 12b of the other buffer parts I 12a respectively. Thus, the horizontal plane projection (e.g. latitude direction) of the isthmuses Ii 2c of one of the two buffer parts ii 2a is level with the horizontal plane projection of at least one slot sections 1 12b of the other buffer part 1 12a.

[0040] Furthermore, in this exemplary embodiment of the first buffer portion 112, as shown in FIG. 3, the width of the isthmuses 1 12c gradually decreases from the outer surface of the first shell 110 to the inner surface of the first shell 110, In some embodiments, for example, the width of the isthniuses I 12c can be configured as constant (the two side surfaces of the isthmuses 1 12c remain equal to each other). In some embodiments, for example, the width of the isthmuses I 12c can be configured as gradually increased from the outer surface of the first shell to the inner surface of the first shell 110.

[0041] In sonic embodiments, for example, the first rail 113 includes a first supporting groove 1 13a and a first supporting ring 1 13b. The first supporting ring 1 13b is detachably disposed on the first supporting groove 11 3a to form the first rail 113, [0042] As shown in the exemplary embodiment of the housing 100 in FIGS, 1-4B, the second buffer portion 122 can be configured to have two buffer parts 122a. Each of the buffer parts I 22a is positioned as part of the housing 100 to at least partially surround the gyroscopic member 190. Each of the buffer parts 122a is structured to include a plurality of slot sections I 22b and a plurality of isthmuses 1 22c in its surface, For example, the structures of the second cover 121 and the second buffer portion 122 of the second shell 120 can be configured to be similar to the structures of the first cover 111 and the first buffer portion 112 of the first shell 110. In this embodiment, the materials of the first cover 111, the second cover 121, and the rail a can include, for example, metal or plastic.

[0043] In sonic embodiments, for example, the second rail 123 includes a second supporting groove 123a and a second supporting ring 123b. The second supporting ring 123b is detachably disposed on the second supporting groove 123a to form the second rail 123.

[0044] The second shell 120 and the first shell 110 can attach together so that the second shell 120 and the first shell 110 form an accommodating space 130 together. For example, the first rail 113 and the second rail 123 can form an annular groove 142 of the rail 140 between the first buffer portion 112 and the second buffer portion 122. The rail 140 has an inner surface 14! which faces the accommodating space I 30, and the annular groove 142 is formed on the inner surface 141.

[0045] For example, the first rail 113 and the second rail 123 are combined with each other.

Therefore, when the annular groove 142 is damaged due to being rubbed or impacted by the shaft 320 (of the rotor 300 of the gyroscope member 190), the user may only need to replace the damaged first rail 113 and the damaged second rail 123 with a new first supporting ring 11 3b and a new second rail portion 123. Thus, it is more convenient to maintain the annular groove 142 of the wrist exerciser 10.

[0046] In this and some embodiments, for example, the exemplary slot sections 1 12b are oriented so that the long axes of the slot sections I 12b are parallel to that of the annular groove 142. The long axis of the exemplary slot section 1 12b is the direction parallel to the long side of the slot section 1 12b. In some other embodiments, for example, the long axes of the slot sections 1 12b are perpendicular to that of the annular groove 142. And in some other embodiments, for example, the long axes of the slot sections 1 12b and the annular groove 142 have an acute angle there between.

[0047] In the exemplary embodiment of the wrist exerciser 10 shown in FIGS. 1-4B, the number of buffer portions of the housing 100 is two. Yet, in some embodiments, for example, the number of the buffer portion(s) is one or more than two. In such embodiments when the housing has only one buffer portion, for example, the buffer portion is disposed on the first shell or the second shell 120.

[0048] In the exemplary embodiment of the wrist exerciser 10 shown in FIGS. 1 -4B, neither the first cover iii nor the second cover 121 have the disclosed channels or grooves. Yet, in some embodiments, for example, the first cover 111 and the second cover 121 have the disclosed channels or grooves to prevent the first cover 111 and the second cover 121 from being damaged or permanently deformed.

[0049] As shown in the exemplary embodiment of the wrist exerciser 10 in FIGS. 1-4B, the gyroscopic member 190 includes a ring 200 and a rotor 300. The ring 200 is located in the accommodating space 130, and has a body, an annular protrusion 210 and two holes 220. The annular protrusion 21 0 protrudes from the outer surface of the body of the ring 200, and is slidably disposed on the annular groove 142. The two holes 220 are at the two opposite sides of body of the ring 200. For example, the axis of one of the two holes 220 aligns with that of the other. The rotor 300 is located inside the accommodating space 130 and includes a ball 310 and a shaft 320. The shaft 320 has a supporting portion 321 and two extending portions 322. The supporting portion 321 is connected to the two extending portions 322, and the supporting portion 321 is between the two extending portions 322, The diameter of the extending portions 322 is less than the diameter of the supporting portion 32!. The supporting portion 321 passes through the ball 310. The two extending portions 322 protrude from the ball 310 and insert in the holes 220 so that the ball 310 is rotatable relative to the ring 200.

100501 The protective assembly 105 has an initial deforming poinlistrength which is a property of the protective assembly. When a force is greater than the initial deforming point/strength, the force is exerted to the damping element 105, and the deformation of the damping element 105 occurs. The initial deforming point/strength of the protective assembly should be greater than the weight of the rotor 300. Therefore, the rotor 300 does not generate unnecessary motion during its rotation, so that the rotor 300 can spin smoothly.

100511 For example, when the initial deforming point/sUength to the protective assembly 105 is 5 kilograms, the behavior of protective assembly 105 may be what is described below, When the housing 100 is impacted and an external force of slightly greater than 5 kilograms is exerted to thc protcctivc assembly, thc protcctivc assembly 1 05 starts to bccome deformcd, When the housing tOO is impacted and an external force greater than 21 kilograms is exerted to the protective assembly 105, the displacement of the buffer assembly 105 caused by the deformation is equal to the maximum distance between the ball 310 and the housing 100.

[0052] The structural assembly of the wrist exerciser 10 is precisely designed in the contacting position and contacting area where the shaft 320 contacts the annular groove 142 to avoid the wrist exerciser 10 from generating unexpected noise to affect the user's training.

However, when the shaft 320 is bent, the relative position between the shaft 320 and the annular groove 142 changes, resulting in the wrist exerciser I 0 generating unwanted vibration and noise.

Therefore, preventing the shaft 320 from being bent is an important consideration. The following describes how to decrease the bending extent of the shaft 320 or to prevent the shaft 320 from being bent by the protective assembly 105 when the wrist exerciser 10 is impacted, in reference to FIG. 4A to FIG. SB. FIGS. SA and SB show sectional views of a wrist exerciser 10 when being impacted.

[0053] FIG. 4A and FIG. 4B show the sectional views of the wrist exerciser 10 not being impacted. The weight (e.g., 300 grams) of the ball 310 is less than the initial deforming point/strength of the first buffer portion 112 and the second buffer portion 122. Therefore, the first buffer portion 112 and the second buffer portion 122 are not deformed, [0054] As shown in FIG. SA and FIG. SB, when the wrist exerciser 10 falls on the ground, for example, an impact force F is applied to the housing 100. In this example, the impact point is at the second cover 121 of the second shell 120, and the magnitude of the impact force F is greater than the initial deforming point/strength of the second buffer portion 122. When the impact force F hits the second cover 121 of the second shell 120, the second buffer portion becomes deformed while the ball 310 and the shaft 320 move toward the second cover 121.

[0055] For example, the movement of the wrist exerciser 10 caused by the impact is described below, in two stages. At the first stage, the ball 310 does not contact with the housing 100. The shaft 320 and the ball 310 are pushed toward the second cover 121 accompanied with the deformation of the second buffer portion 122, Accordingly, the deformation of the second buffer portion I 22 prevents the impact force F from concentrating at the position where the extending portion 322 connects to the supporting portion 321. Therefore, the force which the shaft 320 receives is lowered due to the deformation of the second buffer portion 1 22, so as to prevent shaft 320 from bending. During the second stage, the ball 3 I 0 contacts with the housing 100. At this stage, part of the ball 310 weight is supported by the housing 100 to lessen the force received by the shaft 320, thereby avoiding damage thereto, [0056] Experiments of an exemplary embodiment of the wrist exerciser 10 were conducted, including subjecting the wrist exerciser 10 to impact forces, to demonstrate how the protective assembly 105 protects the wrist exerciser 10 from damaging. In one example, the weight of this embodiment of the wrist exerciser was 0.3 kilograms. The wrist exerciser 10 was tested by dropping it from one meter high to the ground. Because the protective bodies I 1 2 and buffer portion 122 lowered the rigidity of the housing 100, the time the wrist exerciser 10 being impacted was extended (from 6.5 milliseconds to 8.5 milliseconds). Therefore, the impact force F was lowered from 204.46 kilograms/meter (kg/m) to 156.35 kilograms/meter (kg/m).

100571 Since the impact force F (156.35 kilograms/meter) was greater than the minimum deforming force (21 kilograms/meter) of the second buffer portion 122, the impact force F received by the shaft 320 was lowered by the deformation of the second buffer portion 122.

Therefore, the second buffer portion 122 prevented the shaft 320 from breaking or bending.

10058] Although the impact point in the above examples was at the second cover 121 of the second shell 120, the location of the impact point could be elsewhere. For example, the impact point can be at the first cover 111 of the first shell 110. When the impact point is at the first cover ill of the first shell 110, the impact to the wrist exerciser 10 is similar to what is described above where the impact point is at the second cover 121 of the second shell 120, When the impact point is at a location where the first shell 110 connects with the second shell 120, for another example: As the middle section of the housing 100 has the buffer parts 1 12a and 122a, the housing 100 is more flexible and shows a better deforming ability as compared with the rest of the housing without the buffer parts 1 12a and 122a. in other words, the housing 100 with the buffer parts 1 12a and I 12b can sufficiently deform to press the ball 310 against the housing 100.

As such, the housing IOU can buffer the impact force that would otherwise directly apply to the shaft 320 to prevent it from bending or breaking.

10059] In addition, the first rail 113 and the second rail 123 can be connected with each other. Thus, if the annular groove 142 (fomied by the first rail 113 and the second rail 123) is abraded by the shaft 320, for example, the user only needs to replace the abraded first rail 113 and the abraded second rail 123 with a new first rail I 13 and a new second rail 123, Therefore, the user does not need to purchase a new wrist exerciser just because the annular groove 142 is abraded, 10060] In some embodiments such as those described above, the first buffer portion 112 and the second buffer portion 122 have two rows of buffer parts 1 12a and two rows of buffer parts 122a, respectively. Yet, in some embodiments, for example, the first buffer portion 112 may only include one buffer part 1 12a; whereas in some other embodiments, for example, the first buffer portion 112 can include more than three buffer parts Ii 2a.

100611 FIG. 6 through FTG. 8 show diagrams of various views of exemplary embodiments of a wrist exerciser having a protective casing structure according to the disclosed technology.

FIG. 6 shows a side view of a housing of another exemplary wrist exerciser of the disclosed technology. FIG. 7 shows a side view of a housing of another exemplary wrist exerciser of the disclosed technology. FIG. 8 shows a side view of a housing of another exemplary wrist exerciser of the disclosed technology. The exemplary embodiments shown in FIG. 6, FIG. 7, and/or FIG.8 include some similar features to the embodiment of FIGS, l-4B, so only the differences are described.

100621 As shown in FIG. 6, in this exemplary embodiment, both the first buffer portion 112 and the second buffer portion 122 have only one buffer part 112a and 122a respectively. The buffer part Ii 2a has a plurality of slot sections ii 2b and a plurality of isthmuses ii 2c and the buffer part I 22a has a plurality of slot sections I 22b and a plurality of isthmuses 1 22c. The slot sections 11 2b and 1 22b and the isthmuses 1 12c and 1 22c surround the peripheral of the ball 310 to form a circle on the surface of the ball 310 in the directions parallel to the annular groove 142.

100631 As shown in FIG. 7, in this exemplary embodiment, the first buffer portion 112 and the second buffer portion 122 have only one buffer part II 2a and I 22a respecti'vely. The buffer part 1 12a has a plurality of slot sections 1 12b and a plurality of isthmuses 1 12c and the buffer part 122a has a plurality of slot sections 122b and a plurality of isthmuses 122c, The slot sections 1 12b and 122b and the isthmuses 1 12c LEwd 122c surround the peripheral of the ball 310 in the directions perpendicular to the annular groove 142.

100641 As shown in FIG. 8, in this exemplary embodiment, the first buffer portion 112 and the second buffer portion 122 have a plurality of rows of buffer parts 1 12a and a plurality of rows of buffer parts 122a respectively. The buffer part 1 12a has a plurality of slot sections 1 12b and a plurality of isthmuses ii 2c and the buffer part I 22a has a plurality of slot sections I 22b and a plurality of isthmuses 122c. The long axes of the slot sections 1 12b and 122b and the annular groove 142 have an acute angle there between.

100651 in some embodiments, for example, the first buffer portion 112 and the second buffer portion 122 can be made from materials having a buffer property (e.g., soft materials so that the protective bodies can absorb the impact). FIG. 9 shows a side view of a housing of another exemplary wrist exerciser of the disclosed technology. In this exemplary embodiment, the materials of the first buffer portion 112 and the second buffer portion 122 include, but are not limited to, rubber. In similar embodiments, for example, the materials of the first buffer portion 112 and/or the second buffer portion 122 can include other flexible, compressible, and/or shock absorbent materials. Examples of the materials of the first buffer portion and/or the second buffer portion 122 can include polycarbonate, silicone, plastic, or like materials with elasticity properties.

100661 For example, flexible materials or relatively rigid materials can utilized in the protective assembly I 05 because of the structural design of the protective assembly 1 05 that enables the protective assembly 105 to resist or at least increase resistance to impact force(s) that may be exerted upon the wrist exerciser 10 (e.g., such as dropping the wrist exerciser), in which S the resistance to such impact force(s) is provided by the slots or channels built into the housing structure of the wrist exerciser, thereby providing an overall deformable structure of the housing to protect the gyroscope member from damage due to the impact force(s).

100671 As previously described, for example, the amount of the slot sections 1 12b and 122b, and isthmuses 1 12c and 122c, of the first buffer portion 112 and the second buffer portion 122 can include, for example, three, but is not limited thereto. FIG. 10 shows a sectional view of a protective structure of a first shell of another exemplary wrist exerciser of the disclosed technology, In this exemplary embodiment, the amount of the slot sections 1 12b and 122b and isthmuses I 12c and 122c of the first buffer portion 112 and the second buffer portion 122 are, for

example, six.

100681 in addition, for example, the width of the isthmuses can be configured to gradually decrease from the outer surface of the first shell to the inner surface of the first shell along the radial direction, but is not limited thereto, In some embodiments, for example, the width of the isthmuses is constant (the two side surfaces of the isthmuses remain parallel to each other). Tn some other embodiments, the width of the isthmuses can be configured to gradually increase from the outer surface of the first shell to the inner surface of the first shell along the radial direction.

100691 For example, in some embodiments, the first supporting groove I 13a and the first supporting ring 1 13b are combined with each other. Yet, in some embodiments, for example, the first supporting groove 1 13a and the first supporting ring 1 13b can be integrally formed into one piece. FTG. I I shows an expanded view of an exemplary wrist exerciser of the disclosed technology. In this exemplary embodiment, the first rail 113 and the second rail 123 are integrally formed into one piece.

10070] In addition, in some embodiments of the wrist exerciser 10, the wrist exerciser 10 further includes a protective ring 400, which is detachably disposed on the protective assembly 105 of the housing 100 so that the user may use the wrist exerciser 10 more comfortably.

100711 In some embodiments, the first rail 113 further includes a first supporting groove I 13a and a first supporting ring 1 13b. The first supporting ring 1 13b is detachably disposed on the first supporting groove Ii 3a to form the first rail 113. The rail forces the ball and the shaft to move together when the buffer portions deforms plastically. The concentration of the impacting force at the combined position, where the extending portion combines with the supporting portion, is avoided. Therefore, the buffer portions share the impact force received by the shaft by the plastic deformation of the buffer portions to avoid the shaft from becoming bent or broken due to heavy impact. In addition, when the ball contacts the housing, the housing is capable of supporting the weight of the ball to decrease the impacting force received by the shaft, Therefore, the housing shares the impacting force which the shaft receives with the buffer portion of the housing. Furthermore, since the first rail and the second rail are combined with each other, when the annular groove formed by the first rail and the second rail is broken, the user only needs to replace the broken first rail and the abraded second rail with a new first rail and a new second rail, Therefore, the user does not need to purchase a new wrist exerciser just because the annular groove is abraded.

100721 Referring to FIGS. 12A and 12B (an expanded view of buffer part 1 12a as shown in FIG. 1 2A), slot sections 11 2b are tapered at one end, leaving the narrowest part to be 1.6 mm and the widest part to be 2.3 mm in a preferred embodiment. The width of isthmus II 2c plus the two slot sections 1 12b sandwiching the isthmus is preferably 6.3 mm. The tapered portions 115 of buffer parts 1 12b each approximate 7 mm in length.

[0073] in some embodiments, for example, the protective assembly 105 is not formed integrally with the housing 100 but is a separate part, as illustrated in FIGS. 13 and 14.

Referring to FIG. 13, the protective assembly 105 is disposed within the outside housing 100.

The protective assembly 105 can be preferahly made of polycarbonate, plastic, or like materials with elasticity properties. The outside housing I 00 can be preferably made of metallic and/or alloy materials and includes a first shell 110 and a second shell 120. in some embodiments, a band 203 can be disposed around the central part of the housing 100. The band 203 can be preferably made of rubber materials, which serves as a further protection to the gyroscopic member 190 and for better grasp by a user. A cap 204 is detachably mounted onto the second shell 120, and can include a speedometer (to sense and display the rotation speed of the rotor).

[0074] in some embodiments, for example, the protective assembly 105 can be made of materials such as silicone which can absorb shocks and vibrations. Because of such properties, the protective assembly 105, whether including buffer portions 112 and 122, can absorb shocks and thus isolate the gyroscopic member 190 from the external impact. As shown in FIGS. 15 and 16, the shaft 320 of the gyroscopic member 190 is disposed between the first supporting ring 113b and second supporting ring 123b. The first supporting ring 113b and second supporting ring 1 23b are embedded within the protective assembly 105 and form a rail space for the shaft 320 to rotate along therein.

[0075] While this patent document contains many specifics, these should not be construed as limitations on the scope of any invention or of what may be clainied, but rather as descriptions of features that may be specific to particular embodiments of particular inventions. Certain features that are described in this patent document in the context of separate embodiments can also be implemented in combination in a single embodiment, Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or niore features froni a claimed combination can in sonic cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination, [0076] Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Moreover, the separation of various system components in the embodiments described in this patent document should not be understood as requiring such separation in all embodiments.

[0077] Only a few imp'ementations and examples are described, and other implementations, enhancements and variations can be made based on what is described and illustrated in this patent document.

Claims

CLAIMS1. A wrist exerciser (10), characterized by: a housing (100) having a protective assembly (105), the protective assembly (105) having a rail (140) and a buffer portion (112 and 122), and the position of the buffer portion (112 and 122) corresponding to the rail (140); and a gyroscopic member (190) moveably disposed at the rail (140), comprising: a ring (200) being inside the housing (100) and slidably disposed at the rail (140); and a rotor (300) being inside the housing (100) and comprising a ball (310) and a shaft (320), the shaft (320) penetrating the ball (310), with its two opposite ends connected to the ring (200) for the shaft (320) to rotate relatively to the ring (200); wherein the protective assembly (105) is structured to absorb an impact force to protect the structure and functionality of the wrist exerciser (10).
2. The wrist exerciser 00) according to claim I, wherein the rail (140) guides the ball (310) and the shaft (320) to move when the protective assembly (105) deforms.
3. The wrist exerciser (10) according to claim I, wherein: the housing (100) has a first cover (111) and a second cover (121); and the protective assembly (105) is connected between the first cover (111) and the second cover (121), with the buffer portion (112 and 122) disposed between the rail (140) and the first cover Oil).
4, The wrist exerciser (10) according to claim 3, wherein: the rail (140) has an inner surface (141) forming an annular groove (142), the inner surface (141) facing the ball (310); and the ring (200) has an annular protrusion (210) slidably disposed within the annular groove (142).
5. The wrist exerciser (10) according to claim 4, wherein the housing (100) comprises: a first shell (110) comprising the first cover (111) and the buffer portion (112 and 122), the buffer portion (112 and 122) being between the first cover (111) and a first rail (113) formed of an edge of the first shell (110); and a second shell (120) comprising the second cover (121) and a second rail (123) formed of an edge of the second shell (120); wherein the first shell (110) is attached to the second shell (120) so as to form an accommodating space (130) therein, the first rail (113) and the second rail (123) forming the annular groove (142) of the rail (140) for accommodating the ring (200).
6. The wrist exerciser (10) according to claim 5, wherein the first rail (113) further comprises a first supporting groove (Ii 3a) and a first supporting ring (11 3b), and the first supporting ring (1 13b) is detachably disposed at the first supporting groove (1 13a).
7. The wrist exerciser (10) according to claim 6, wherein the second rail (123) further comprises a second supporting groove (I 23a) and a second supporting ring (I 23b), and the second supporting ring (I 23b) is detachably disposed at the second supporting groove (I 23a).
8. The wrist exerciser (10) according to claim 4, wherein the buffer portion (112 and 122) has a plurality of slot sections (1 12b and 122b) and a plurality of isthmuses (1 12c and 122c) in its surface with the slot sections (1 12b and 122b) and the isthmuses (1 12c and 122c) oriented so that their long axes are parallel to the annular groove (142),
9. The wrist exerciser (10) according to claim 4, wherein the buffer portion (112 and 122) has a plurality of slot sections (1 12b and 122b) and a plurality of isthmuses (1 12c and 122c) in its surface with the slot sections (1 12b and 122b) and the isthmuses (1 12c and 122c) oriented so that their long axes are perpendicular to the annular groove (142).
10. The wrist exerciser (10) according to claim 4, wherein the buffer portion (112 and 122) has a plurality of slot sections (1 12b and 122b) and a plurality of isthmuses (1 12c and 122c) in its surface with the slot sections (1 12b and 122b) and the isthmuses (1 12c and 122c) oriented so that their long axes are at an acute angle with the annular groove (142).
1 I. The wrist exerciser (10) according to claim 4, wherein: the buffer portion (112 and 122) has two neighboring buffer parts (1 12a and 122a), each buffer part (1 12a and 122a) having a plurality of slot sections (1 12b and 122b) and a plurality of isthmuses (1 12c and 122c) aligned along the circumference of the housing (100) corresponding to the ball (310), and at least one of the slot sections (I l2b and l22b) corresponds to and alternates with at least one of the isthmuses (1 12c and 122c).
12. The wrist exerciser (10) according to claim II, wherein the long axes of the plurality of slot sections (1 12b and 122b) are parallel to the annular groove (142).
13. The wrist exerciser (10) according to claim 1, wherein the buffer portion (112 and 122) has a maximum protective distance, the maximum protective distance being greater than or equal to the distance between the ball (310) and the housing (100).
14. A wrist exerciser (10), comprising: a housing (100) having a protective assembly (105), the protective assembly (105) having a rail (140), a first buffer portion (112) and a second buffer portion (122), and the rail (140) being between the first buffer portion (112) and the second buffer portion (122); and a gyroscopic member (190) moveably disposed at the rail (140), the gyroscopic member (190) comprising: a ring (200) being inside the housing (100) and slidably disposed at the rail (140); and a rotor (300) being inside the housing (100) and comprising a ball (310) and a shaft (320), the shaft (320) penetrating the ball (310) with its two opposite ends connected to the ring (200) for the shaft (320) to rotate relatively to the ring (200); wherein the protective assembly (105) is structured to absorb an impact force to protect the structure and functionality of the wrist exerciser (10).
15. The wrist exerciser (10) according to claim 14, wherein: the housing (100) further comprises a first cover (111) and a second cover (121); and the rail (140) is connected to the first buffer portion (112) and the second buffer portion (122), wherein the rail (140), the first buffer portion (112), and the second buffer portion (122) are disposed between the first cover (111) and the second cover (121).
16. The wrist exerciser (10) according to claim 14, wherein: the rail (140) has an inner surface (141) forming an annular groove (142), the inner surface (141) facing the ball (310); and the ring (200) has an annular protrusion (210) slidably disposed within the annular groove (142).
17. The wrist exerciser (10) according to claim 15, wherein the housing (100) comprises: a first shell (110) comprising the first cover (111) and the first buffer portion (112), the first buffer portion (112) being between the first buffer portion (112) and a first rail (113) formed of an edge of the first shell (110); and a second shell (120) comprising the second cover (121) and the second buffer portion (122), the second buffer portion (122) being between the second cover (121) and a second rail (123) formed of an edge of the second shell (120); wherein the first shell (liD) is attached to the second shell (120) so as to form an accommodating space (130) therein, the first rail (113) and the second rail (123) forming the annular groove (142) of the rail (140) for accommodating the ring (200),
18. The wrist exerciser (10) according to claim 16, wherein the first buffer portion (112) and the second buffer portion (122) each have a plurality of slot sections (11 2b and 1 22b) and a plurality of isthmuses (I I2c and I22c) in the surface with the slot sections (1 12b and 122b) and the isthmuses (1 12c and 122c) oriented so that their long axes are parallel to the annular groove (142).
19. The wrist exerciser (10) according to claim 16, wherein the first buffer portion (112) and the second buffer portion (122) each have a plurality of slot sections (1 12b and 122b) and a plurality of isthmuses (1 12c and 122c) in the surface with the slot sections (1 12b and 122b) and the isthmuses (11 2c and 1 22c) oriented so that their long axes are perpendicular to the annular groove (142).
20. The wrist exerciser (10) according to claim 16, wherein the first buffer portion (112) and the second buffer portion (122) each have a plurality of slot sections (Ii 2b and I 22b) and a plurality of isthmuses (1 12c and 122c) in the surface with the slot sections (1 12b and 122b) and the isthmuses (1 12c and 122c) oriented so that their long axes are at an acute angle with the annular groove (142).
21. The wrist exerciser (10) according to claim 16, wherein: the first buffer portion (112) and the second buffer portion (122) each have two neighboring buffer parts (11 2a and I 22a), each buffer part (11 2a and 1 22a) having a plurality of slot sections (11 2b and I 22b) and a plurality of isthmuses (II 2c and I 22c) aligned along the circumference of the housing (100) corresponding to the ball (310); and at least one of the slot sections (1 12b and 122b) corresponds to and alternates with at least one of the isthmuses (II 2c and 1 22c),
22. The wrist exerciser (10) according to claim 21, wherein the long axes of the plurality of slot sections (1 12b and 122b) are parallel to the annular groove (142).
23. The wrist exerciser (10) according to claim 14, wherein the first buffer portion (112) and the second buffer portion (122) total a maximum protective distance, the maximum protective distance being greater than or equal to the distance between the ball (310) and the housing (100).
24. A housing (100) of a wrist exerciser (10), comprising: a first shell (110) comprising a first cover (Ill), a first buffer portion (112) and a first rail (113), the first buffer portion (112) being connected between the first co'ver (Iii) and the first rail (113); and a second shell (120) comprising a second cover (121), a second buffer portion (122) and a second rail (123), the second buffer portion (122) being connected between the second cover (121) and the second rail (123); wherein the first shell (110) is attached to the second shell (120) so as to form an accommodating space (130) therein; and wherein the first rail (113) and the second rail (123) form a rail (140).
25. The housing (100) of the wrist exerciser (10) according to claim 24, wherein the rail (140) has an inner surface (141) forming an annular groove (142), the inner surface (141) facing the accommodating space (130).
26. The housing (100) of the wrist exerciser (10) according to claim 25, wherein the first buffer portion (112) and the second buffer portion (122) each have a plurality of slot sections (1 12b and 122b) and a plurality of isthmuses (1 12c and 122c) in the surface with the slot sections (ii 2b and I 22b) and the isthmuses (II 2c and 1 22c) oriented so that their long axes are parallel to the annular groove (142).
27. The housing (100) of the wrist exerciser (10) according to claim 25, wherein the first buffer portion (112) and the second buffer portion (122) each have a plurality of slot sections (1 12b and 122b) and a plurality of isthmuses (1 12c and 122c) in the surface with the slot sections (ii 2b and 1 22b) and the isthmuses (ii 2c and I 22c) oriented so that their long axes are perpendicular to the annular groove (142).
28. The housing (100) of the wrist exerciser (10) according to claim 25, wherein the first buffer portion (112) and the second buffer portion (122) each have a plurality of slot sections (ii 2b and I 22b) and a plurality of isthmuses (ii 2c and 1 22c) in the surface with the slot sections (1 12b and 122b) and the isthmuses (1 12c and 122c) oriented so that their long axes are at an IS acute angle with the annular groove (142).
29. The housing (100) of the wrist exerciser (10) according to claim 25, wherein the first buffer portion (112) and the second buffer portion (122) each have two neighboring buffer parts (ii 2a and 1 22a), each buffer part (ii 2a and I 22a) having a plurality of slot sections (1! 2b and 122b) and a plurality of isthmuses (1 12c and 122c) aligned along the circumference of the housing (100) corresponding to the ball (310), and at least one of the slot sections (II 2b and I 22b) corresponds to and alternates with at least one of the isthmuses (1 12c and 122c).
30. The housing (100) of the wrist exerciser (10) according to claim 29, wherein the long axes of the plurality of slot sections (11 2b and 122b) are parallel to the annular groove (142).
31. The housing (100) of the wrist exerciser (10) according to claim 24, wherein the first rail (113) further comprises a first supporting groove (11 3a) and a first supporting ring (Ii 3b), and the first supporting ring (1 13b) is detachably disposed at the first supporting groove (1 13a).
32. The housing (100) of the wrist exerciser (10) according to claim 24, wherein the second rail (123) further comprises a second supporting groove (123a) and a second supporting ring (123b), and the second supporting ring (123b) is detachably disposed at the second supporting groove (I 23a),
33. A wrist exerciser (10), comprising: a housing (100) structured to include a casing structure (110 and 120), a rail (140), and one or more channels (112 and 122) along a direction of the casing structure (110 and 120), wherein the channels (112 and 122) penetrate through the casing structure (110 and 120) forming an empty space to buffer a force caused by an impact to the housing (I 00); and a gyroscopic member (190) moveably disposed at the rail (140), comprising: a ring (200) being inside the housing (100) and slidably disposed at the rail (140); and a rotor (300) being inside the housing (100) and comprising a ball (310) and a shaft (320), the shaft (320) penetrating the ball (310), with its two opposite ends connected to the ring (200) for the shaft (320) to rotate relativ&y to the ring (200); wherein the housing (100) is structured to absorb an impact force to protect the structure and functionality of the wrist exerciser (10).
34. The wrist exerciser (10) according to claim 33, wherein the direction of the one or more channels (112 and 122) includes a latitude direction, a longitude direction, or a diagonal direction on the casing structure (110 and 120).
35. The wrist exerciser (10) according to claim 34, wherein the channels (112 and 122) span along the latitude direction such that each channel (112 and 122) extends a distance less than the circumference of its respective latitude, and a portion of the respective channels (112 and 122) is configured to overlap with respect to a longitudinal coordinate.
36. The wrist exerciser (10) according to claim 33, wherein the rail (140) guides the ball (310) and the shaft (320) to move together when the housing (100) absorbs mechanica' shock or deforms,
37. The wrist exerciser (10) according to claim 33, wherein the housing (100) includes a first cover (111) and a second cover (121).
38. The wrist exerciser (10) according to claim 33, wherein: the rail (140) has an inner surface (141) forming an annular groove (142), the inner surface (141) facing the ball (310); and the ring (200) has an annular protrusion (210) slidably disposed within the annular groove (142).
39. The wrist exerciser (10) according to claim 38, wherein the casing structure (110 and 120) of the housing (100) includes a first shell (110) and a second shell (120) each including the one or more channels (112 and 122), and the first shell (110) and the second shell (120) are attachable and detachable from one another; wherein the first shell (110) is structured to include a first rail (113) on its interior side of a connecting edge to the opposing shell (120), and a first cover region (Ill), such that the one or more channels (112) of the first shell (110) are located between the first cover region (ill) and the first rail (113); IS wherein the second shell (120) is structured to include a second rail 023) on its interior side of the connecting edge, and a second cover region (121), such that the one or more channels (122) of the second shell (120) are located between the second cover region (121) and the second rail (123), and wherein the first rail (113) and the second rail (123) form the annular groove (142) of the rail (140).
40. The wrist exerciser (10) according to claim 39, wherein the first rail (113) further includes a first supporting groove (1 13a) and a first supporting ring (1 13b), and the first supporting ring (1 13b) is detachably disposed at the first supporting groove (1 13a).
41. The wrist exerciser (10) according to claim 39, wherein the second rail (123) further includes a second supporting groove (123a) and a second supporting ring (123b), and the second supporting ring (123b) is detachably disposed at the second supporting groove (123a),
42. The wrist exerciser (10) according to claim 33, wherein the one or more channels (112 and 122) are configured as a plurality of slot sections (1 12b and 122b) and a plurality of isthmuses (112c and 122c) with the slot sections (112b and 122b) and the isthmuses (112c and 122c) oriented so that their long axes are parallel to the annular groove (142).
43. The wrist exerciser (10) according to claim 33, wherein the one or more channels (112 and 122) are configured as a plurality of slot sections (1 12b and 122b) and a plurality of isthmuses (11 2c and I 22c) with the slot sections (11 2b and I 22b) and the isthmuses (II 2c and I 22c) oriented so that their long axes are perpendicular to the annular groove (142).
44. The wrist exerciser (10) according to claim 33, wherein the one or more channels (112 and 122) are configured as a plurality of slot sections (I I2b and 122b) and a plurality of isthmuses (112c and 122c) with the slot sections (112b and 122b) and the isthmuses (112c and 122c) oriented so that their long axes are at an acute angle with the annular groove (142).
45. The wrist exerciser (10) according to claim 33, wherein the one or more channels (112 and 122) are configured in a region that has a maximum protective distance, wherein the maximum protective distance is greater than or equal to the distance between the ball (310) and the housing (100).
46. The wrist exerciser (10) according to claim 33, wherein the casing structure (110 and 120) is formed of a material including at least one of polycarbonate, silicone, and plastic.
47. The wrist exerciser (10) according to claim 33, further comprising: a band (203) disposed around a central region of the housing (100), wherein the band (203) is configured to provide further protection to the wrist exerciser (10) by absorbing at least a portion of the impact force and to provide a frictional surface for a user to grasp the wrist exerciser (10).
48. The wrist exerciser (ID) according to claim 47, wherein the band (203) is formed of a flexible and compressive material including rubber.
49. The wrist exerciser (10) according to claim 33, further comprising: a cap (204) detachably coupled to the casing structure (110 and 120) of the housing (100).
50. The wrist exerciser (10) according to claim 49, wherein the cap includes a speedometer configured to detect a rotation speed of the rotor (300) and display the detected speed to a user on the wrist exerciser (10).
51. The wrist exerciser (10) according to claim 1, wherein the protective assembly (105) is formed of a material including at least one of polycarbonate, silicone, and plastic.
52. The wrist exerciser (10) according to claim 51, wherein the housing (100) further comprises an outside housing (100) connecting with the protective assembly (105), and wherein the outside housing (I 00) is formed of a material including at least one metal or alloy.
53. The wrist exerciser (10) according to claim 14, wherein the protective assembly (105) is formed of a material including at least one of polycarbonate, silicone, and plastic.
54. The wrist exerciser (10) according to claim 53, wherein the housing (100) further comprises an outside housing (100) connecting with the protective assembly (105), and wherein the outside housing (100) is formed of a material including at least one metal or alloy.
55. The housing (100) of the wrist exerciser (10) according to claim 24, wherein the first and second buffer portions (112 and 122) as well as the first and second rails (113 and 123) are formed of a material including at least one of polycarbonate, silicon, and plastic.
56. The housing (100) of the wrist exerciser (10) according to claim 55, wherein the first and second covers (111 and 121) are formed of a material including at least one metal or alloy.
57. The wrist exerciser (10) according to claim 33, wherein the rail (140) and the channels (112 and 122) are formed in a material including at least one of polycarbonate, silicone, and plastic.
58. The wrist exerciser (10) according to claim 57, wherein the casing structure (110 and 120) is formed of at least one material including at least one metal or alloy.
59. A wrist exerciser substantially as described hereinabove with reference to Figures I to SB, Figure 6, Figure 7, Figure 8, Figure 9, Figure 10, Figure 11, Figure 12A to Figure 12B, Figure 13 and 14, or Figure 15 and 16 of the accompanying drawings.