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    • 2. 发明申请
    • DIAPHRAGM FOR A LOUDSPEAKER WITH A MOVING COIL
    • 带有移动线圈的扬声器的隔膜
    • WO2005107315A1
    • 2005-11-10
    • PCT/IB2005/051272
    • 2005-04-19
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.FRASL, EwaldWASINGER, Helmut
    • FRASL, EwaldWASINGER, Helmut
    • H04R7/14
    • H04R7/14H04R7/18H04R2499/11
    • A preferably elongated loudspeaker (LS), which preferably comprises a cylindrical moving coil (SP) and an elongated diaphragm (M) with an elongated fastening part (B) and an annular retaining part (H) lying within the fastening part (B), and with corrugations (S1) extending in radial directions, wherein the diaphragm (M) comprises an arrangement for reducing its stiffness in at least one narrow region (SM1, SM2), which arrangement is present between the fastening part (B) and the retaining part (H). In a preferred embodiment comprising an arrangement of the corrugations (S1) in the at least one narrow region (SM1, SM2) the corrugation density is smaller than the corrugation density in at least one wide region (BM1, BM2). Preferably, the diaphragm (M) furthermore comprises an additional corrugation (S2) in the at least one narrow region (SM1, SM2), which additional corrugation (S2) extends transversely to radial directions. The above measures serve to reduce the stiffness of the diaphragm (M) locally so as to minimize disadvantageous mechanical forces exerted by the diaphragm (M) on the moving coil (SP).
    • 优选细长扬声器(LS),其优选地包括圆柱形活动线圈(SP)和具有细长紧固部分(B)的细长隔膜(M)和位于紧固部分(B)内的环形保持部分(H) 并且具有沿径向方向延伸的波纹(S1),其中隔膜(M)包括用于在至少一个窄区域(SM1,SM2)中降低其刚度的装置,该布置存在于紧固部件(B)和保持件 部分(H)。 在包括至少一个窄区域(SM1,SM2)中的波纹(S1)的布置的优选实施例中,波纹密度小于至少一个宽区域(BM1,BM2)中的波纹密度。 优选地,隔膜(M)还包括在至少一个窄区域(SM1,SM2)中的附加波纹(S2),该附加波纹(S2)横向于径向方向延伸。 上述措施用于局部地减小隔膜(M)的刚度,以便最小化由隔膜(M)施加在移动线圈(SP)上的不利机械力。