Comba Telecom Technology (guangzhou) Limited

Comba Telecom Technology Limited

Hongbin Duan

Peitao Liu

Jianjun You

Fengzhang Xue

Chaosheng Huang

Binlong Bu

Guosheng Su

Litao Chen

Zefeng Ma

Songdong Fan

Gengfei Wu

Lijing Peng

Guixin Zheng

Yabin Chen

Binbin Fa

The disclosure relates to the field of welding technology. A welding base includes a welding groove defined therein. A limiting member is arranged inside the welding groove for preventing solder and to-be-welded member from loosening from the welding groove after the to-be-welded member is welded to the welding joint. Based on the prior art welding base, the inside of the welding groove of the present disclosure is provided with a limiting member, which can prevent the solder from a longitudinal movement, thus preventing the solder from falling off the welding groove.

Welding base

A linked locking mechanism and antenna down-tilt angle control device is described. Linked locking mechanism includes: mounting frame with a mounting positions, each mounting position has a mounting through hole and a clamping body. Output assembly includes an output shaft and output gear resiliently disposed on output shaft. One end of output gear has engaging body engaged with clamping body and pressing body provided through mounting through hole. Rotating bracket has pressure bearing surface pressed against pressing body. Arc-shaped embossments are provided on pressure bearing surface. The arc-shaped embossment includes guide end, anti-reverse end, and mating body. When mating body and pressing body abut, and engaging body and clamping body are separated, output gear drives output shaft to rotate. Linked locking mechanism and antenna down-tilt angle control device provide easy positioning and accurate control of down-tilt angle of antenna.

Linked locking mechanism and antenna down-tilt angle control device

A transmission device and an antenna down-tilt control system includes: an input component, comprising an inner gear ring, a first gear and a second gear both coaxial with the inner gear ring, and a third gear engaged with the first gear; a unidirectional control mechanism, comprising a first unidirectional component, the first unidirectional component comprising a first rotating member that can unidirectionally rotate in a first rotation direction, the first rotating member being fixedly connected to the inner gear ring; an output component, comprising at least two fourth gears arranged at an interval in a circumferential direction, the third gear being selectively engaged with any one of the fourth gears; and a rotary component, comprising a fifth gear and a rotary box.

Transmission device and antenna down-tilt control system

An adjusting device for phase shifter of antenna in mobile communication includes a gear, a rack, a screw, a driving nut, a driving shaft and a manipulating member. The gear is fixed to a rotation axis of a phase shifter on a reflecting plate of the antenna. The rack is fixed to the driving shaft. One end of the driving nut is fixed to the driving shaft. The other end of the driving nut is provided with an internal screw hole engaging with the screw. The manipulating member is jointed to the screw at one end thereof. The driving shaft and the screw are respectively supported by a driving shaft supporter and a screw supporter on the reflecting plate of the antenna. A control device is coupled to the adjusting device. The control device is formed with a rotation shaft to be suitably received in the slot in the head of the manipulating member. The present invention need not modify internal structure of the control device for different mechanical route of the phase shifter. Thus, the adjusting device according to the present invention has an approved universality and can adjust the electrical down-tilt angle more precisely.

Adjusting device for phase shifter of antenna in mobile communication

Growing community of inventors

Guangdong, China

Hongbin Duan