Abstract: The present invention relates to the technical field of electro-acoustic products. Provided is a loudspeaker module, comprising a first cover (10) and a second cover (20) combined together; the first cover (10) and the second cover (20) enclose an inner cavity of the module; the inner cavity of the module houses a loudspeaker unit (30) therein; the loudspeaker module further comprises a fastener assembly used to fasten to a fixed structure of an electronic device and thus fix the loudspeaker module to the electronic device. The loudspeaker module solves the technical problem in the prior art of insecure engagement between a loudspeaker module and an electronic device. The loudspeaker module is securely engaged with the electronic device and is easy to install, thus effectively extending the service life of the electronic device installed with the loudspeaker module.

Abstract: An anti-saturation device for a ground magnetic resonance signal amplifying circuit has a receiving coil connected with a band-pass filter circuit through a pre-amplifying circuit and a programmable amplifying circuit. The programmable amplifying circuit is connected with an AD acquisition card through the band-pass filter circuit. The band-pass filtering circuit is connected with a computer through the AD acquisition card, and the AD acquisition card is connected with an emitting system through the computer. An automatic amplification factor adjusting module is embedded into a nuclear magnetic resonance detector, and can also directly replace a receiving amplification circuit of the nuclear magnetic resonance detector to work independently.

Abstract: A loudspeaker module comprising a module casing. A loudspeaker unit body (30) is accommodated within the module casing. The loudspeaker unit body (30) comprises a unit body front cover (32) and a unit body casing (34) which are combined with each other. A vibration system and a magnetic circuit system are accommodated within a space enclosed by the unit body front cover (32) and the unit body casing (34). A plurality of positioning columns (340) are arranged outside sidewalls of the unit body casing (34). Each of the positioning columns (340) protrudes out of the surface of the sidewall of the unit body casing (34), and extends from the upper end of the unit body casing (34) to the lower end of the unit body casing (34) along the sidewall of the unit body casing (34). Positioning bosses (22) are individually arranged at positions on the module casing corresponding to the positioning columns (340).

Abstract: A bending loudspeaker and an electronic wearing product using same. The bending loudspeaker comprises a vibrating system, a magnetic circuit system and a shell (1), wherein the vibrating system comprises a vibrating diaphragm (2) having a bending shape and a voice coil (3) having a bending shape which is in matched combination with the vibrating diaphragm; the magnetic circuit system comprises a washer, a magnet and a speaker frame (8) having a bending shape from top to bottom, wherein the washer comprises a central washer (4) having a bending shape and side washers (5) having a bending shape which are arranged at two sides of the central washer (4) having a bending shape, and the magnets comprises a central magnet (6) having a bending shape and side magnetic (7) having a bending shape which are arranged at two sides of the central magnet (6) having a bending shape.

Abstract: The present invention relates to the technical field of electro-acoustic products. Provided is a loudspeaker module, comprising a first cover (10) and a second cover (20) combined together; the first cover (10) and the second cover (20) enclose an inner cavity of the module; the inner cavity of the module houses a loudspeaker unit (30) therein; the loudspeaker module further comprises a fastener assembly used to fasten to a fixed structure of an electronic device and thus fix the loudspeaker module to the electronic device. The loudspeaker module solves the technical problem in the prior art of insecure engagement between a loudspeaker module and an electronic device. The loudspeaker module is securely engaged with the electronic device and is easy to install, thus effectively extending the service life of the electronic device installed with the loudspeaker module.

Abstract: A board game includes a chessboard having squares arranged in a pattern on the chessboard; and pieces adapted to place on the squares respectively, each piece having a no-mark face-up side and a face-down side with either of diagonal lines or a grid of lines being printed thereon. The pieces with the diagonal lines are identified as one side and the pieces with the grid of lines are identified as the opposing side. Either side has one half the number of the pieces. The face-down side of each piece is marked with a scissors, a rock, or a paper. The pieces belonging to either side are grouped as the scissors pieces, the rock pieces, and the paper pieces, all being equal in numbers. The board game is particularly intended to be played by two individuals such as children or non-Chinese adults who cannot read Chinese characters.

Abstract: A strike trainer includes a main frame adapted to abut against a supporting surface and a striking device mounted on a top portion of the main frame. The strike device includes a weighted element secured received in the top portion of the main frame and a resilient member having a first end engaged to a lower end of the weighted element. A rope has a first end securely connected to a second end of the resilient member and a resilient post having a first end secured in the top portion of the main frame and sleeved on the rope. A ball is secured on a second end of the rope after extending through the resilient post and abuts a second end of the resilient post due to a restitution force of the resilient member.