Abstract: The present disclosure provides an earphone charging case including a case body, a case cover, and a sliding mechanism. The case body includes an earphone charging slot. The case cover is disposed on the case body to cover the earphone charging slot. The sliding mechanism is disposed between the case body and the case cover. The sliding mechanism includes a first sliding part and a second sliding part corresponding to the first sliding part. The case cover is slidably connected to the case body through the sliding mechanism. The earphone charging case can be opened and closed through linear sliding movement between the case cover and the case body.

Abstract: A cable-winding charger includes a housing, a main circuit board, a plug, a pivot base, a torsion spring, and a data cable. The main circuit board is in the housing and includes conductive rings. The conductive rings are coaxially arranged around the column of the housing. The plug is pivotally connected to the housing and electrically connected to the main circuit board. The pivot base is pivotally connected to the housing. Each conductive piece of the pivot base contacts the corresponding conductive ring. One end of the torsion spring is fixed to the column, and the other end of the torsion spring is fixed to the pivot base. One end of the cable body of the data cable is electrically connected to the conductive pieces, and the other end of the cable body is electrically connected to the connection port.

Abstract: An in-ear earphone includes an earphone housing, a speaker assembly fixed onto the earphone housing, and an electric energy portion electrically connected to the speaker assembly, a sound emitting tube and an ear tip, where one end of the sound emitting tube is fixed onto the earphone housing, where the sound emitting tube has a first through hole; and the ear tip is fixedly connected to the other end of the sound emitting tube, a cross-section of the ear tip is oval-shaped, the ear tip has a first end and a second end that face to each other, the ear tip has a stepped hole penetrating through the first end and the second end, a part of the sound emitting tube is located in a large-diameter section of the stepped hole, and a small-diameter section of the stepped hole is in communication with the first through hole.

Abstract: The present disclosure provides an electrical connector comprising an electrical connector body, a conductive adhesive layer, and a connecting cable. The electrical connector body comprises a plurality of electrical connecting conductors. The conductive adhesive layer covers the plurality of electrical connecting conductors. The connecting cable comprises a plurality of cables. One end of each of the cables comprises a conductive pin. The conductive pin of each of the cables is disposed on the conductive adhesive layer. The conductive pin of each of the cables forms an electrical connection path with the corresponding electrical connecting conductor. The plurality of electrical connection paths is individually separated.

Abstract: A positive displacement compressor includes a positive displacement compressor rotor; a shaft operative to support the positive displacement compressor rotor; a bearing operative to support the shaft; a first structure having a first squeeze film compression surface; and a second structure having a second squeeze film compression surface spaced apart radially from the first squeeze film compression surface. The first and second structures are constructed to jointly form a squeeze film damper using the first and second squeeze film compression surfaces. The squeeze film damper is operative to provide squeeze film damping of vibrations. An annular oil discharge groove is disposed adjacent to a first end of the squeeze film damper. A first o-ring gland houses a circumferential-sealing o-ring disposed proximate to the first end of the squeeze film damper. A second o-ring gland houses a second circumferential-sealing o-ring disposed proximate to a second end of the squeeze film damper.

Abstract: An electronic device with a recognizable shell is provided. At least a portion of the recognizable shell is manufactured by a method including mixing a plastic material and a color material to obtain a mixture material, increasing an environment temperature of the mixture material to a preheating temperature lower than the plastic material melting point, increasing the environment temperature above the preheating temperature, increasing the environment temperature to a temperature 5 to 10 degrees above the plastic material melting point; increasing the environment temperature above the color material melting point, injecting the mixture material in a mold cavity of a mold, maintaining the mold in under a molding pressure, and obtaining the cooled mixture material as the portion. A manufacturing method for recognizable covering plate is also provided.

Abstract: An aluminium-zinc-hot-dipped and colour-coated steel plate having a 600 MPa yield strength grade and a high elongation and a manufacturing method thereof, with the chemical components in mass percentage of a substrate of the steel plate being: 0.07-0.15% of C, 0.02-0.5% of Si, 1.3-1.8% of Mn, N?0.004%, S?0.01%, Ti?0.20%, Nb?0.060%, and the balance being Fe and other inevitable impurities, and meanwhile satisfying the conditions of: (C+Mn/6)?0.3%; Mn/S?150; Nb satisfying 0.01%?(Nb?0.22C?1.1N)?0.06% where no Ti is contained; Ti satisfying 0.5?Ti/C?1.5 where no Nb is contained; and 0.04%?(Ti+Nb)?0.26% where Ti and Nb are added in combination. The steel plate has a yield strength of ?600 MPa, a tensile strength of ?650 MPa, an elongation after fracture of ?12%, a good strength and toughness and an excellent corrosion resistance.

Abstract: Disclosed are an in-ear detection method for a wireless earphone and a wireless earphone. This method includes acquiring a position parameter sent by a position detection module; determining that the wireless earphone has left a charging box based on the position parameter; controlling an audio playback module to emit a detection acoustic wave; acquiring a detection signal and identifying acoustic parameters of the detection signal, the detection signal being generated from a reflected wave of the detection acoustic wave collected by an acoustic wave sensor; and determining whether the wireless earphone is worn in a user's ear based on the acoustic parameters.

Abstract: Provided is an optical tracking tool for navigating a surgery, comprising a mounting base. The mounting base is provided with two to six supporting faces thereon. Two or four reflective balls are arranged on each of the supporting faces. A positioning surface is formed by the four reflective balls located on the same supporting face or the four reflective balls respectively located on two adjacent supporting faces. An included angle between surface normal vectors of two adjacent positioning surfaces is 90°-140°. As compared with a tracking tool having a single positioning surface formed by four reflective balls in the prior art, the optical tracking tool can considerably broaden an effective tracking range of a system, thereby improving system accuracy.

Abstract: Disclosed are a laser heterodyne interferometric apparatus based on plane mirror reflection and a corresponding method. The interferometric apparatus includes a dual-frequency laser, a first photoelectric receiver, a second photoelectric receiver, a first polarizing beamsplitter, a second polarizing beamsplitter, a third polarizing beamsplitter, a quarter-wave plate, a right angle mirror, an optical compensator, and a measured plane mirror. The method performs heterodyne interferometry with two spatially separated beams of different frequencies and balances the optical path lengths of the measurement beam and the reference beam with the optical compensator. In the method, the measured plane mirror moves back and forth along the propagation direction of the input beams. The disclosure suppresses optical non-linearity and optical thermal drift in laser heterodyne interferometry, simplifies the optical path structure, and improves accuracy of laser heterodyne interferometry.

Abstract: Disclosed are a laser heterodyne interferometric apparatus based on plane mirror reflection and a corresponding method. The interferometric apparatus includes a dual-frequency laser, a first photoelectric receiver, a second photoelectric receiver, a first polarizing beamsplitter, a second polarizing beamsplitter, a third polarizing beamsplitter, a quarter-wave plate, a right angle mirror, an optical compensator, and a measured plane mirror. The method performs heterodyne interferometry with two spatially separated beams of different frequencies and balances the optical path lengths of the measurement beam and the reference beam with the optical compensator. In the method, the measured plane mirror moves back and forth along the propagation direction of the input beams. The disclosure suppresses optical non-linearity and optical thermal drift in laser heterodyne interferometry, simplifies the optical path structure, and improves accuracy of laser heterodyne interferometry.

Abstract: A car charging device includes a main body, a charging interface, an input terminal, a conversion circuit, a microphone, a loudspeaker, and a noise reduction circuit. A main body includes an insertion portion and the top. The charging interface includes a charging terminal. The input terminal is located at the insertion portion. The conversion circuit is electrically connected to the input terminal and the charging terminal and configured to convert electric power. The microphone is located on the top and configured to convert a sound into an input audio. The loudspeaker is located on the top. The noise reduction circuit is configured to generate a noise reduction audio according to the input audio, and drive, by using the noise reduction audio, the loudspeaker to emit a noise reduction sound, where the noise reduction audio is an inversion of a regular audio continuing for a preset time in the input audio.

Abstract: A portable power bank includes a main body, a charging slot, a back plate, and a charging module. The charging slot is at the back surface of the main body. The charging slot has an accommodating space for receiving an electronic product. The back plate is pivotally connected to the back surface and is movable between a first position and a second position. A first angle is between the back plate at the first position and the back surface, and the back plate at the second position is received on the back surface. The output terminal of the charging module is at the surrounding wall for charging the electronic product. The conversion circuit of the charging module is for converting electricity from the input terminal and outputting to the battery or the output terminal, and converting electricity stored in the battery and outputting to the output terminal.

Abstract: The present disclosure disclosed a conductive slip ring including a first terminal group and a second terminal group. The first terminal group includes a first terminal and a second terminal. The first terminal has a first contact portion provided with a first annular contact surface. The second terminal has a second contact portion provided with a second annular contact surface. The second terminal group includes a third terminal and a fourth terminal. The third terminal is in rotating contact with the first annular contact surface of the first terminal. The fourth terminal is in rotating contact with the second annular contact surface of the second terminal. The first annular contact surface and the second annular contact surface are spaced apart from each other along an axial direction of the conductive slip ring. As a result, structure of the conductive slip ring can be made in a more compact manner.

Abstract: A car charger includes a main body, a charging slot, and a charging module. The main body has an insertion portion and a top portion. The charging slot is located at the top portion. The charging slot has a concave surrounding wall, and the surrounding wall has a receiving space. The charging module includes an input terminal, a first charging terminal, and a conversion circuit. The input terminal is located at the insertion portion. The first charging terminal is located at the surrounding wall. The conversion circuit is electrically connected to the input terminal and the first charging terminal. The conversion circuit is configured to convert power from the input terminal and output the power to the first charging terminal.

Abstract: Radio frequency channel connection detection methods and apparatus, to detect a connection mode between a radio frequency channel and an antenna, thereby reducing difficulty in secondary onsite construction, and improving construction efficiency. The method includes: receiving, by a first radio frequency unit by using each of N to-be-detected radio frequency channels, signals sent by using at least one of N reference radio frequency channels of a reference radio frequency unit; and determining a connection relationship between the N to-be-detected radio frequency channels and N antennas based on the signals received by using each to-be-detected radio frequency channel.

Abstract: An integrated controller for motion control and motor control comprises a first processor, a second processor, a cache and a shared memory. The first processor is configured to run an operating system and at least perform motion control. The second processor is configured to at least perform motor control and normally not run the operating system. The cache is coupled to the first processor and the second processor. The shared memory maps onto the cache. The first processor and the second processor are configured to share the shared memory and accordingly perform data transmission via the cache during the periods of motion control and motor control. The first processor, the second processor and the cache are integrated in a same chip.

Abstract: The present disclosure relates to a welding quality detecting field, and specifically relates to a quality detection device. The quality detection device includes an integrated probe set, a driving module and a collecting module. The integrated probe set includes a plurality of integrated probe assemblies. The integrated probe assemblies are disposed in pairs and each integrated probe assembly includes a driving end and a collecting end. The driving end of one integrated probe assembly is matched with the driving end of another integrated probe assembly disposed in pairs with the one integrated probe assembly. The collecting end of one integrated probe assembly is matched with the collecting end of another integrated probe assembly disposed in pairs with the one integrated probe assembly.