Abstract: A pickup diaphragm includes a pickup part, a suspension edge and an outer edge, wherein the pickup part includes a non-planar surface. The suspension edge includes a deformable surface, with a joint surface being respectively configured on the inner and outer sides of the deformable surface, and the joint surface on the inner side being fixedly connected to the periphery of the non-planar surface. In addition, the outer edge includes a ring groove, in which one side of the ring groove is set as a connection end while the other side thereof is set as an opening end, the inner side of the connection end is fixedly connected to the joint surface located on the outer side, and a stethoscope head can be inserted through the opening end such that the ring groove is placed in sleeve on the outside of the stethoscope head.

Abstract: A pickup diaphragm includes a pickup part, a suspension edge and an outer edge, wherein the pickup part includes a non-planar surface. The suspension edge includes a deformable surface, with a joint surface being respectively configured on the inner and outer sides of the deformable surface, and the joint surface on the inner side being fixedly connected to the periphery of the non-planar surface. In addition, the outer edge includes a ring groove, in which one side of the ring groove is set as a connection end while the other side thereof is set as an opening end, the inner side of the connection end is fixedly connected to the joint surface located on the outer side, and a stethoscope head can be inserted through the opening end such that the ring groove is placed in sleeve on the outside of the stethoscope head.

Abstract: A point-pressed audio pickup apparatus includes a deformation element and an audio pickup device. The deformation element is pushed by an external force to induce deformation, so that a distance sensing element in the audio pickup device can measure the deformation through the changed distance so as to trigger the audio pickup device to start receiving sound.

Abstract: An improved structure for a passive radiation sound box comprises: a body, which is formed an inner room and a sound-guide tunnel through several clapboards, the surface of the body is disposed an outlet connecting with the tunnel; a passive radiation component, each of the two ends of a vibration film has an edge, the component is disposed between the clipboards, the edges are connected with the clipboards; and an amplifier unit, which is surrounded in the room by the clapboards and the component, a vibration film of the unit is disposed on a side surface of the room, the component is beneath the unit; wherein while the unit is vibrating and sounding, partial sound pressure in the room is through the room by way of the component, and is then released by the outlet along the tunnel.

Abstract: A connecting structure adapted to connect two sound boxes comprises a clasping assembly and a positioning structure, the surface of the clasping assembly has a protruding portion, which has several protruding members, the surface of the positioning assembly has a hollow open, which has several oblique-rotation positioning portions and several apertures according to the protruding members of the clasping assembly, wherein the clasping assembly and the positioning assembly have four locking holes respectively for the clasping assembly and the positioning assembly being fixed to the two sound boxes; the protruding members of the protruding portion of the clasping assembly are inserted into the apertures of the hollow open of the positioning assembly accordingly, the clasping assembly or the positioning assembly is rotated in order to let the protruding members be fixed in the positioning portions, so that the different sound boxes are connected to each other.

Abstract: A connecting structure adapted to connect two sound boxes comprises a clasping assembly and a positioning structure, the surface of the clasping assembly has a protruding portion, which has several protruding members, the surface of the positioning assembly has a hollow open, which has several oblique-rotation positioning portions and several apertures according to the protruding members of the clasping assembly, wherein the clasping assembly and the positioning assembly have four locking holes respectively for the clasping assembly and the positioning assembly being fixed to the two sound boxes; the protruding members of the protruding portion of the clasping assembly are inserted into the apertures of the hollow open of the positioning assembly accordingly, the clasping assembly or the positioning assembly is rotated in order to let the protruding members be fixed in the positioning portions, so that the different sound boxes are connected to each other.

Abstract: A hanging structure of a hi-fi set of an electronic whiteboard comprises: a locking area, which is at one side of the hanging structure and has a plurality of locking holes for fixing the hanging structure on the electronic whiteboard; and a snapping area, which is at another side of the hanging structure, the thickness of the snapping area is thinner than the thickness of the locking area in order to form a space, wherein the hi-fi set has a plurality of hooking members, each hooking member is through the hanging hole of the to snapping area and downwardly snapping at the snapping area, further, the hanging structure can independently make the hi-fi set be hanged on a wall surface.

Abstract: An improved heat sink structure for car power adapter has an air-in vent on the lateral side of the power adapter, an air-out vent on an upper housing of the power adapter, a circuit board disposed within the power adapter wherein a fan is mounted on the circuit board and a heat sink is disposed on the fan. The present invention implements the heat sink with the fan so as to suck cold air into the power adapter via the air-in vent. When the electronic elements on the circuit board generate heat, the heat sink is capable of conducting the heat from the electronic elements of the circuit board and the cold air enhances the efficiency in heat exchange. Subsequently, the heated air can be exhausted to outside via the air-out vent by the fan, thereby prolonging the lifetime and reducing the breakdown possibilities of the heat sink structure.

Abstract: A structure of connectors includes a fixed portion and a movable portion. Two hooks of the fixed portion allows for accommodating the cylinders of the push-and pull means of a movable portion, and the connecting terminals of the fixed portion and the connecting terminals of the movable portion are disposed correspondingly for temporal corresponding combining the fixed portion and the movable portion.

Abstract: A transducer is provided with at least one fuse base along with a fuse built in either side of the transducer, and an upper cover is provided for protecting component parts contained in the transducer, and an opening with a protective cap is provided on the upper cover at the position facing to each corresponding fuse for keeping out infringement of foreign materials and detachable for replacement of the fuse. With this structure, upon replacement of the faulted fuse, it is not necessary to turn upside down for detaching the base cover to replace the fuse as that is done in a traditionally constructed transducer.

Abstract: Disclosed is an improved jack structure, includes a main body, a cover, two protective covers, a lock piece and a conductive piece. When an object is inserted into a single one of insertion holes each corresponding to one of the protective covers on the main body, a corresponding one of the protective covers is pushed to move. A protrusion of the pushed protective cover then pushes an urging portion of the lock piece and the urging portion is stopped by the other one of the protective covers. Therefore, the improved jack structure can be prevented from being inserted with an acute object and thus from occurrence of electric shock.