4 results about "Gradual transition" patented technology

This invention relates to transition layer materials and welding processes for welding dissimilar steel and aluminum materials, belonging to the field of welding technology. The transition layer material for welding dissimilar steel and aluminum materials of this invention comprises a copper layer, a copper alloy layer, and a zinc alloy layer arranged sequentially; the copper layer is adjacent to the steel base material, and the zinc alloy layer is adjacent to the aluminum base material; the copper content in the copper alloy layer is 62.0%-64.0%; the zinc content in the zinc alloy layer is 89.0%-91.0%; the mass ratio of the copper layer, copper alloy layer, and zinc alloy layer is (0.9-1.1):(2.3-2.7):(1.8-2.2). By sequentially setting the copper layer, copper alloy layer, and zinc alloy layer between the steel base material and the aluminum base material, a gradual transition from the steel base material to the aluminum base material is achieved, effectively avoiding the formation of brittle Fe-Al intermetallic compounds during direct welding, and enhancing the mechanical properties and durability of the welded joint.

This invention discloses a gradual transition structure between the conical surface and the folded edge surface of a carbon fiber loudspeaker diaphragm and its manufacturing method, belonging to the field of electroacoustic technology. The structure includes a diaphragm formed by one-time hot pressing of carbon fiber prepreg. The diaphragm has a conical main body and a folded edge surface located at the outer edge of the conical main body. A gradual transition zone is provided between the conical main body and the folded edge surface. The thickness of the gradual transition zone linearly changes from the thickness of the conical main body to the thickness of the folded edge surface, with a transition length ≥30mm. The gradual transition zone achieves continuous thickness variation through ply cutting angle control, and the ply cutting edge is beveled. This invention also discloses a manufacturing method for this gradual transition structure, including ply design, bevel cutting, and hot pressing. By controlling the ply termination position and bevel cutting angle, the interlaminar shear stress is reduced from approximately 38MPa in traditional structures to approximately 15MPa, increasing the fatigue life of the diaphragm bending area by 3-5 times. This invention solves the problem of interlaminar delamination caused by abrupt thickness changes at the bending root of large-diameter loudspeaker diaphragms, significantly improving the structural integrity and long-term reliability of the diaphragm.

The utility model relates to the technical field of massage devices, and more particularly to a type of hygienic massage insole for footwear. The technical result sought is achieved in that a corrective insole comprises a bed of variable thickness having a front portion, a middle portion and a rear portion, the top side of the bed having rounded protruding massage points arranged thereon, and the underside of the bed having depressions therein with through-holes and further having built-in magnets, the insole being characterized in that on the top side the middle portion is higher than the front portion and transitions into the front portion through a radius of curvature of 24.5-34.5 mm, and the middle portion is divided into a first region with a raised edge and a second region with a raised edge, wherein the first region of the middle portion is lower than the second region, with a gradual transition between the two regions, the raised edge of the first region of the middle portion curves toward the first region with a radius of curvature of 12.4-72 mm, and the raised edge of the second region of the middle portion curves toward the second region with a radius of curvature of 7.5-91.8 mm, and the rear portion of the bed also comprises raised edges, wherein the rear portion is lower than the middle portion on the top side of the bed and transitions into the middle portion at an obtuse angle thereto. The technical result of the claimed utility model consists in a better distribution of pressure applied to the foot.

This invention discloses a user-decision-based intelligent furniture parameter adaptation and control method, relating to the field of intelligent furniture control technology. The target strategy of this invention employs a dual-track generation mechanism of basic and temporary strategies. Upon detecting a target user, the basic strategy is first retrieved; if a temporary strategy exists within a preset time, it is prioritized as the target strategy. During the execution phase, if immediate control is required, the intelligent furniture undergoes a gradual transition control; if immediate control is not required, a pre-reminder time is set, followed by gradual control after the reminder. The basic strategy in this invention is generated based on historical user behavior data, avoiding the rigidity problem of traditional single fixed strategies and accurately adapting to users' daily habits. The priority mechanism of the temporary strategy can flexibly respond to immediate needs, solving the pain point of untimely strategy adjustments in unexpected scenarios. Overall, it achieves personalized strategy generation and humanized execution, balancing intelligent automation and user autonomy, significantly improving the accuracy and user experience of intelligent furniture control.