77results about How to "Improve connection fixation effect" patented technology

This invention relates to the field of electroacoustic conversion, and more particularly to a sound-generating device, comprising a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to generate sound. The vibration system includes a diaphragm fixed to the frame and a voice coil that drives the diaphragm to vibrate. The frame includes a ring-shaped metal frame and plastic portions respectively injection-molded into the metal frame and covering a portion of the metal frame. The magnetic circuit system is fixedly connected to the metal frame by welding. The sound-generating device also includes conductive solder pads embedded in the plastic portions and exposed for introducing external electrical signals. The voice coil is electrically connected to the conductive solder pads. Compared with the prior art, the magnetic circuit system of the frame and lower clamp of this invention is increased, improving the connection and fixation effect between the frame and the magnetic circuit system. At the same time, since the flexible circuit board is housed in the clearance space and extends along the length direction of the clearance space, the conductivity reliability of the sound-generating device is effectively improved.

The utility model discloses a vacuum heat pipe heat exchanger pipeline connecting structure which comprises an installing base, an inner cavity is formed in the installing base, a cover plate is connected to the side, close to the inner cavity, of the front face of the installing base through bolts, and a connecting mechanism is arranged in the inner cavity. A first fastening semi-ring and a second fastening semi-ring are fixedly connected to the output end of the connecting mechanism, a first pipeline and a second pipeline are clamped in the first fastening semi-ring and the second fastening semi-ring, the connecting positions of the first pipeline and the second pipeline are in butt joint, a mounting ring adheres to the inner wall of the middle of the inner cavity, and an adjusting button is connected to the tail end of the mounting ring through threads. Threads are arranged on the outer wall of the circumference of the adjusting knob, the circumference of the adjusting knob is connected with a fixing nut through the threads, and a gasket adheres to the side, close to the fixing nut, of the mounting base. According to the utility model, the connection and fixation between the pipeline I and the pipeline II are effectively promoted, meanwhile, the defects of the connection of the pipelines of the traditional vacuum heat pipe heat exchanger are overcome, and the pipelines of the vacuum heat pipe heat exchanger are convenient to assemble, disassemble and replace.