Abstract: Disclosed is a battery case suitable for being disposed on an electric assist bicycle. The battery case includes a case body, a cover plate and an elastic member. The cover plate is connected to the opening of the case body to jointly form an accommodation chamber. The elastic member is arranged between the cover plate and the opening of the case body. The elastic member includes a waterproof structure. The waterproof structure is configured to block a gap between the case body and the cover plate to prevent external water from entering the accommodation chamber through the gap.

Abstract: A support structure including a first bracket, a second bracket, and at least one elastic member is provided. The first bracket includes multiple first alignment hole groups. The second bracket is detachably connected to the first bracket along a first axis. The second bracket includes multiple second alignment hole groups. The second bracket is adapted to slide relative to the first bracket along the first axis to change a length of the support structure along the first axis. The at least one elastic member is detachably connected to the first bracket and the second bracket. When the second bracket is connected to the first bracket, at least one of the first alignment hole groups is aligned with at least one of the second alignment hole groups to form at least one insertion space. A portion of the at least one elastic piece is located in the corresponding at least one insertion space and connected to the first bracket and the second bracket.

Abstract: A battery accommodating member includes a housing, a battery placement portion, an electrical connecting portion, at least one first engaging structure and at least one second engaging structure. The housing has a first surface, a second surface and a plurality of side surfaces. The first surface is opposite to the second surface, and the side surfaces are connected between the first and second surfaces. The battery placement portion is formed in the housing and penetrates from the first surface to the second surface, and a battery is partially accommodated therein. The electrical connecting portion is formed in the first surface, and a conductive sheet is disposed at the electrical connection portion to electrically connect the battery. The first engaging structure is disposed on one side surface, and the second engaging structure is disposed on another side surface. A battery module and a battery fixing structure are also provided.

Abstract: An earphone case includes a body, a storage member, a cover, and a reset member. The body has a chamber and a fixing base. The base is securely disposed in the chamber. The storage member is disposed in the chamber, located above the fixing base, contacted with the body, and has multiple first magnetic parts. The cover is pivotally connected to the storage member and the fixing base, and the cover has multiple second magnetic parts. The reset member is disposed above the fixing base and connected to the body and the storage member respectively. In close mode, the cover completely covers the storage member. The multiple first magnetic parts and second magnetic parts are magnetically attracted to each other. In open mode, the cover is relatively separated from the storage member and rotated at an angle, such that the cover partially overlaps with the storage member.

Abstract: A positioning structure includes a first positioning component and a second positioning component. The first positioning component includes a first arched positioning portion having a first arched positioning surface. The second positioning component is disposed at one side of the first positioning component, wherein the second positioning component includes a second arched positioning portion having a second arched positioning surface. The second positioning component is configured to rotate relative to the first positioning component, such that the second arched positioning portion is moved to one side of the first arched positioning portion. The second arched positioning surface abuts against the first arched positioning surface, such that a degree of freedom of movement of the second positioning component in a direction is restricted by the first positioning component. An energy storage device is also provided.

Abstract: An earphone case includes a body, a storage member, a cover, and a reset member. The body has a chamber and a fixing base. The base is securely disposed in the chamber. The storage member is disposed in the chamber, located above the fixing base, contacted with the body, and has multiple first magnetic parts. The cover is pivotally connected to the storage member and the fixing base, and the cover has multiple second magnetic parts. The reset member is disposed above the fixing base and connected to the body and the storage member respectively. In close mode, the cover completely covers the storage member. The multiple first magnetic parts and second magnetic parts are magnetically attracted to each other. In open mode, the cover is relatively separated from the storage member and rotated at an angle, such that the cover partially overlaps with the storage member.

Abstract: A positioning structure includes a first positioning component and a second positioning component. The first positioning component includes a first arched positioning portion having a first arched positioning surface. The second positioning component is disposed at one side of the first positioning component, wherein the second positioning component includes a second arched positioning portion having a second arched positioning surface. The second positioning component is configured to rotate relative to the first positioning component, such that the second arched positioning portion is moved to one side of the first arched positioning portion. The second arched positioning surface abuts against the first arched positioning surface, such that a degree of freedom of movement of the second positioning component in a direction is restricted by the first positioning component. An energy storage device is also provided.