Abstract: A secondary battery includes a cylindrical can, an electrode assembly in the cylindrical can together with an electrolytic solution, and a cap assembly coupled to the top of the cylindrical can, the cap assembly including a cap-up including a cap-up circumference flat portion and a cap-up circumference bent portion bent from the cap-up circumference flat portion in a downward direction and a safety plate coupled to the cap-up circumference flat portion and the cap-up circumference bent portion.

Abstract: A secondary battery includes: an electrode assembly including: a first electrode plate; a second electrode plate; and a separator between the first electrode plate and the second electrode plate; a case configured to accommodate the electrode assembly; a cap assembly electrically connected to the second electrode plate of the electrode assembly; and an insulator coupled to an upper side of the electrode assembly, wherein the insulator includes: an insulating upper portion configured to cover the upper side of the electrode assembly; an insulating side portion between the case and a side portion of the electrode assembly; and an insulating core portion inserted into a hollow portion of the electrode assembly to support the electrode assembly.

Abstract: A swing chair includes: a support which is installed at a certain height or more above the floor; a main operation member elongated and having a virtual first rotation axis provided to the support at one side thereof and rotatably coupled to the support; a sub operation member elongated and having a virtual second rotation axis, provided to the support at one side thereof and spaced parallel to the first rotation axis, and rotatably coupled to the support; a seat portion coupled to any one of the main operation member and the sub operation member; and a rotation connecting member elongated and arranged in a front-rear direction and having a rear portion that is rotatably coupled to the other side of the main operation member and a front portion that is rotatably coupled to the other side of the sub operation member.

Abstract: A swing chair includes: a support which is installed at a certain height or more above the floor; a main operation member elongated and having a virtual first rotation axis provided to the support at one side thereof and rotatably coupled to the support; a sub operation member elongated and having a virtual second rotation axis, provided to the support at one side thereof and spaced parallel to the first rotation axis, and rotatably coupled to the support; a seat portion coupled to any one of the main operation member and the sub operation member; and a rotation connecting member elongated and arranged in a front-rear direction and having a rear portion that is rotatably coupled to the other side of the main operation member and a front portion that is rotatably coupled to the other side of the sub operation member.

Abstract: An independent electric power type speed race apparatus is disclosed. The independent electric power type speed race apparatus comprises a first health cycle comprising a first pedal, a first cycle rotary body rotating by handling of the first pedal, and a first cycle load driving part working as a load checking the rotation of the first cycle rotary body; a first cycle speed sensor sensing a rotation speed of the first cycle rotary body; a second health cycle comprising a second pedal, a second cycle rotary body rotating by handling of the second pedal, and a second cycle load driving part working as a load checking the rotation of the second cycle rotary body; a second cycle speed sensor sensing a rotation speed of the second cycle rotary body; a display plate installed at the front of the first health cycle and the second health cycle.

Abstract: There is disclosed a water play structure comprising play facilities to enable water-play, which includes a first storage tank having the play facilities provided therein, the first storage tank configured to receive water, a second storage tank connected with the first storage tank via a passage, and a cleaning unit provided in the passage provided between the first storage tank and the second storage tank, to purify the water supplied to the first storage tank from the second storage tank.

Abstract: An independent electric power type speed race apparatus is disclosed.