Damping member, shock damping structure in electronic device, and electronic device using the shock damping structure

A shock damping structure for an a wristwatch, in which a damping member provided between a wristwatch case and a wristwatch module encased within the wristwatch case damps an external shock applied on the wristwatch case by a shock absorbing operation of the damping member, the damping member comprising:

• a first shock absorbing member disposed at a part between an inner peripheral surface of the wristwatch case and an outer peripheral surface of the wristwatch module, deformed elastically when the external shock is applied on the wristwatch case, and absorbing elastically the shock;
• and
• a second shock absorbing member disposed at another part between the inner peripheral surface of the wristwatch case and the outer peripheral surface of the wristwatch module, the other part excluding the first shock absorbing member, getting the external shock earlier than the first shock absorbing member when the external shock is applied on the wristwatch case, changing its volume in accordance with a shock force of the external shock, and absorbing the external shock,
• wherein the first shock absorbing member includes an upper surface portion and side leg portions formed integrally with each other to extend along the inner peripheral surface of the wristwatch case and the outer peripheral surface of the wristwatch module between them, and further including cut-out portions at positions corresponding to 3, 6, 9, and 12 o'clock positions of the wristwatch case, and
• wherein the second shock absorbing member is made of a gel-like material whose main component is silicone and includes bending portions and side leg portions formed integrally with the bending portions, the bending portions and side leg portions being arranged at the cut-out portions of the first shock absorbing member to extend along the inner peripheral surface of the wristwatch case and the outer peripheral surface of the wristwatch module between them.

A wristwatch, comprising a wristwatch case, a wristwatch module encased within the wristwatch case and provided with electronic parts, and a damping member provided between the wristwatch case and the wristwatch module and damping an external shock applied on the wristwatch case,

• the damping member including:
• a holding member having a ring-shaped upper surface portion and cylindrical portion, and disposed between an inner peripheral surface of the wristwatch case and an outer peripheral surface of the wristwatch module;
• a first shock absorbing member disposed at a predetermined part on the holding member, deformed elastically when the external shock is applied on the wristwatch case, and elastically absorbing the shock;
• and
• a second shock absorbing member disposed side by side with the first shock absorbing member on the holding member, getting the external shock earlier than the first shock absorbing member when the external shock is applied on the wristwatch case, changing its volume in accordance with a shock force of the external shock, and absorbing the external shock,
• wherein the first shock absorbing member includes an upper surface portion and side leg portions formed integrally with each other to extend along the upper surface of the upper surface portion and outer peripheral surface of the cylindrical portion of the holding member, and further including cut-out portions at positions corresponding to 3, 6, 9, and 12 o'clock positions of the wristwatch case, and
• wherein the second shock absorbing member is made of a gel-like material whose main component is silicone and includes bending portions and side leg portions formed integrally with the bending portions, the bending portions and side leg portions being arranged at the cut-out portions of the first shock absorbing member to extend along the upper surface of the upper surface portion and outer peripheral surface of the cylindrical portion of the holding member.

A damping member comprising a damping member body provided between a wristwatch case and a wristwatch module encased within the wristwatch case and damping an external shock applied on the wristwatch case,

• the damping member body including:
• a holding member having an upper surface and a side surface and disposed between an inner peripheral surface of the wristwatch case and an outer peripheral surface of the wristwatch module;
• a first shock absorbing member disposed to cover a predetermined part of the upper and side surfaces of the holding member, deformed elastically when the external shock is applied on the wristwatch case, and elastically absorbing the external shock;
• and
• a second shock absorbing member disposed to cover another part of the upper and side surfaces of the holding member, the other part excluding the predetermined part, getting the external shock earlier than the first shock absorbing member when the external shock is applied on the wristwatch case, changing its volume in accordance with a shock force of the external shock, and absorbing the external shock,
• wherein the first shock absorbing member includes an upper surface portion and side leg portions formed integrally with each other to extend along the upper surface and side surface of the holding member, and further including cut-out portions at positions corresponding to 3, 6, 9, and 12 o'clock positions of the wristwatch case, and
• wherein the second shock absorbing member is made of a gel-like material whose main component is silicone and includes bending portions and side leg portions formed integrally with the bending portions, the bending portions and side leg portions being arranged at the cut-out portions of the first shock absorbing member to extend along the upper surface and side surface of the holding member.