Linkage device, apparatus accessory, and electronic apparatus

An apparatus accessory, comprising:

• a linkage device;
• and
• a protective casing,
• wherein:
• the protective casing comprises a first portion and a second portion;
• the first portion is swingable with respect to the second portion, and the first portion is coupled to an overturning member of the linkage device;
• the second portion is coupled to a housing of the linkage device;
• the linkage device further comprises:
• a drive component rotatable during a transmission stroke and an idle stroke;
• and a support member coupled to the drive component;
• the drive component and the support member rotate synchronously during the transmission stroke, and at least a part of the drive component idles with respect to the support member during the idle stroke;
• and
• the support member has a retracted position in which the support member is suitable for storage and a support position in which the support member is suitable for stopping and limiting, and the retracted position and the support position are switched by the transmission stroke,
• wherein the drive component comprises a first shaft and a second shaft, the second shaft being coupled to the support member;
• during the transmission stroke, the first shaft, the second shaft and the support member are transmissively coupled and rotate synchronously;
• and
• during the idle stroke, the first shaft and the second shaft are transmissively separated and the first shaft idles.

An electronic apparatus, comprising:

• a linkage device;
• and
• a display screen coupled to the linkage device,
• wherein:
• the linkage device comprises:
• a drive component rotatable during a transmission stroke and an idle stroke;
• and a support member coupled to the drive component;
• the drive component and the support member rotate synchronously during the transmission stroke, and at least a part of the drive component idles with respect to the support member during the idle stroke;
• and
• the support member has a retracted position in which the support member is suitable for storage and a support position in which the support member is suitable for stopping and limiting, and the retracted position and the support position are switched by the transmission stroke,
• wherein the drive component comprises a first shaft and a second shaft, the second shaft being coupled to the support member;
• during the transmission stroke, the first shaft, the second shaft and the support member are transmissively coupled and rotate synchronously;
• and
• during the idle stroke, the first shaft and the second shaft are transmissively separated and the first shaft idles.