Abstract: An antenna rotation structure includes a rotating shaft member rotatably disposed through a perforated groove of a housing, an annular member, and an elastic member. The rotating shaft member has a holding portion located in an accommodating space of the housing, a connecting portion connected to the holding portion and with an annular groove, and a gripping portion with one end connected to the connecting portion and the other end protruded from the housing. The annular member is disposed in the annular groove and abuts the perforated groove. The elastic member is sleeved on the one end of the gripping portion. The connecting portion and the one end of the gripping portion are disposed in the perforated groove. The gripping portion is turned to drive the rotating shaft member to rotate, thereby adjusting an angle of the antenna.

Abstract: Antenna rotation structure includes a rotating member and an angle adjusting member. The rotating member is rotatably disposed along an axial direction in an accommodating space of the housing and includes a holding portion and a pushing portion disposed at one side of the holding portion spaced apart from the axial direction. The angle adjusting member includes a pressing portion bonded to a through hole of the housing and made of an elastic material and, an abutting portion connected to the pressing portion and corresponding to the pushing portion. When the pressing portion is pressed by a force, it deforms and drives the abutting portion to push the pushing portion to drive the holding portion to rotate about the axial direction to adjust the angle of the antenna.

Abstract: A transmission mechanism for a toner cartridge for use in a printing apparatus includes a transmission tenon provided with a plurality of radial ribs each having a first chamfer, and a transmission sleeve internally provided with a plurality of radial grooves. Each of the grooves includes a second chamfer at the opening end of the transmission sleeve. The number of the grooves is twice the number of the ribs, which provides more positions allowing the transmission tenon to engage with the transmission sleeve. Thus, the ribs can engage with the grooves more quickly and accurately, whereas the coupling of the chamfers can reduce contact interference and allows smoother movement transmission. The occurrence of malfunctions can be thereby reduced.