| 摘要 |
A secure joint between heavy magnet systems (11) and plastic loudspeaker frames (12) in conical loudspeakers (10) is conventionally implemented as an adhesive joint or as a shaved rivet joint. These types of joint are disadvantageous, since solvents are necessary when the components are adhesively bonded, and expensive plastics must be used for the shaved rivet joint. Residue-free separation of components joined in this manner is also difficult. Joints that create a secure joint on the basis of mechanically acting components alone are therefore indicated. According to one embodiment of the invention, the magnet system (11) is set into a plastic shroud (31) that has a convex base (32) and a crenelated rim region (36). The higher rim segments (37.2) are guided through openings (38) in the frame base (18) and expanded like rivet heads above the frame base (18), while the other rim segments (37.1) rest on the frame base (18). Since the curvature of the shroud base (32) is reduced by the action of an external force while the rivet heads (39) are being formed, when this external force is removed, the return force in the shroud base (32) causes the magnet system (11) to be permanently and securely seated on the loudspeaker (12).
|
