Abstract: A ball chair may include a chair base and a restricting unit. The chair base has a circular receiving space to receive a ball and an inner portion of the receiving space has a connecting portion that has at least two through holes. The restricting unit has an arc board and a connecting post conjugating with the connecting portion. A restricting board extends from the arc board corresponding to the connecting recessed portion, and the restricting board is protruding from an upper portion of the receiving space. The connecting portion of the chair base is provided for the restricting unit to restrict the ball, and the restricting unit and the connecting portion can be quickly and easily engaged increase the convenience during the assembling process and prevent the ball from being damaged.

Abstract: A ball chair may include a chair base and a restricting unit. The chair base has a circular receiving space to receive a ball and an inner portion of the receiving space has a connecting portion that has at least two through holes. The restricting unit has an arc board and a connecting post conjugating with the connecting portion. A restricting board extends from the arc board corresponding to the connecting recessed portion, and the restricting board is protruding from an upper portion of the receiving space. The connecting portion of the chair base is provided for the restricting unit to restrict the ball, and the restricting unit and the connecting portion can be quickly and easily engaged increase the convenience during the assembling process and prevent the ball from being damaged.

Abstract: An electronically controlled damping structure in fitness equipment may include a base, an adjusting unit and a driving component. A passive component of the adjusting unit can move in a receiving space of the base by the driving component to adjust the distance between the passive component and a top unit to further adjust the resilient coefficient of a buffer unit. So, when the user is exercising on the fitness equipment, he/she does not have to adjust the damping manually to increase the practicability of the fitness equipment, and it is more convenient for the user to adjust the damping.

Abstract: A gyration type exercising device includes a gyration unit (10), a damper (20) and a drive handle (30). The gyration unit includes a mounting frame (11) and a rotation wheel (12) rotatably mounted on the mounting frame and driven by the drive handle. The rotation wheel is provided with a rotation shaft (121). The drive handle has a first end pivotally connected with the rotation wheel and a second end provided with a holding bar (31). Thus, when the user's two hands hold the holding bar to move the drive handle in a gyration manner, the user's body has to move forward and backward and has to exert a force on the drive handle successively to rotate the rotation wheel reciprocally so as to exercise the user's body completely.

Abstract: A full body twisting exercise machine has a support frame comprising a lower layer portion and an upper layer portion, a bearing respectively installed at the lower and the upper layer portions, a revolving shaft disposed though both bearings, one end of the revolving shaft protruding from the upper layer portion and connected to a crank and having an extension bar, a free end of the extension bar having a connecting portion; a connecting rod, a driving rod and a handle, an aperture of the connecting rod pivoted to the connecting portion of the extension bar and secured to one end of the driving rod; another end of the driving rod connected to a handle; and a flywheel disposed between the lower layer portion and the upper layer portion and jacketing the revolving shaft, and the lower layer portion of the support frame having a damping device.

Abstract: A gyration type exercising device includes a gyration unit (10), a damper (20) and a drive handle (30). The gyration unit includes a mounting frame (11) and a rotation wheel (12) rotatably mounted on the mounting frame and driven by the drive handle. The rotation wheel is provided with a rotation shaft (121). The drive handle has a first end pivotally connected with the rotation wheel and a second end provided with a holding bar (31). Thus, when the user's two hands hold the holding bar to move the drive handle in a gyration manner, the user's body has to move forward and backward and has to exert a force on the drive handle successively to rotate the rotation wheel reciprocally so as to exercise the user's body completely.

Abstract: A full body twisting exercise machine has a support frame comprising a lower layer portion and an upper layer portion, a bearing respectively installed at the lower and the upper layer portions, a revolving shaft disposed though both bearings, one end of the revolving shaft protruding from the upper layer portion and connected to a crank and having an extension bar, a free end of the extension bar having a connecting portion; a connecting rod, a driving rod and a handle, an aperture of the connecting rod pivoted to the connecting portion of the extension bar and secured to one end of the driving rod; another end of the driving rod connected to a handle; and a flywheel disposed between the lower layer portion and the upper layer portion and jacketing the revolving shaft, and the lower layer portion of the support frame having a damping device.

Abstract: An exercising device includes a ball, and a rod extended through the ball. Thus, the ball has a periphery formed with two through holes each having a peripheral wall formed with a pressing lip which presses the rod closely after the ball is inflated to form a sealing effect to seal the chamber of the ball to maintain the air in the chamber of the ball, so that the ball is sealed on the rod exactly without incurring air leakage. In addition, the manufacturer only needs to form two through holes in the periphery of the ball without having to form a hollow channel which is extended through the whole diameter of the ball, thereby facilitating fabrication of the ball, and thereby decreasing costs of fabrication.

Abstract: A sphere diameter measuring scale has a flexible ruler, and a zero is marked on one end. Multiple calibrations are evenly marked on the same face with the zero. Each scale has a reading number representing a corresponding diameter length, and when an exercise health ball or a ball chair is filled with air, the semi perimeter and the diameter length of the ball can be obtained conveniently.

Abstract: A ball chair has a seat, a backrest assembly and a ball cushion. The seat has a top face, a passage defined in the top surface of the seat, at least three legs formed on the seat and each leg and a supporting base formed on seat. The backrest assembly mounted on the seat and has a bracket, an angle adjusting device, a locking device and a fixed arm. The bracket has two supporting tabs defined in the bottom of the bracket to abut against the supporting base. The ball cushion is mounted inside the passage in the seat. The ball chair provides functions as adjusting backrest angle and the backrest may be extended for convenient use.

Abstract: An elastic snapping device includes an elastic cord having two distal ends each formed with an end opening, a snapping tool mounted on the elastic cord and having a distal end formed with an enlarged plug inserted into the end opening of the elastic cord, and an elastic sleeve mounted on a connection of the elastic cord and the snapping tool. Thus, the elastic sleeve is mounted on the connection of the elastic cord and the snapping tool closely, so that the snapping tool is combined with the elastic cord rigidly and stably, thereby preventing the snapping tool from detaching from the elastic cord during a long-term utilization.

Abstract: A ball chair with a retaining device has a seat (10), a spherical cushion (20) and two retaining pieces. The spherical cushion (20) rests on the seat (10). The two retaining pieces are selective retaining rods or retaining walls and are respectively attached to a rear end and a front end of the seat (10). Thus, the spherical cushion (20) is held between the two retaining pieces and firmly secured on the seat (10) to keep the spherical cushion (20) from falling off the ball chair.

Abstract: A ball chair with a securing device has a seat (10) with a backrest (14), a ball-shaped cushion (20), a guard rod (30) holding the ball-shaped cushion (20) with the backrest (14), multiple strengthening blocks (40) attached under the seat (10), and multiple legs attached to the seat (10) by the multiple strengthening blocks (40). Each strengthening block (40) is non-hollow to provide an anti-crack efficiency to joints connected to the legs. Additionally, a cone-shaped post is clamped between one strengthening block (40) and one corresponding leg to adjust a total height of the ball chair.