JPS61139091U

JPS61139091U -

Info

Publication number: JPS61139091U
Application number: JP2146885U
Authority: JP
Priority date: 1985-02-18
Filing date: 1985-02-18
Publication date: 1986-08-28

Description

[Brief explanation of the drawing]

第１図ａ，ｂは本考案コーン型スピーカーの振
動系の正面図および２方向断面図、第２図、第３
図は、それぞれ他の２実施例の２方向断面図、第
４図は従来一般のコーン型スピーカーの断面図、
第５図ａ，ｂは従来例の動作説明図と周波数特性
説明図、第６図は周波数特性図である。１は振動板、２はボイスコイル、３はボビン、
４はエツジ、５はダンパ、６はスペーサーである
。 Figures 1a and b are a front view and two-way sectional view of the vibration system of the cone-shaped speaker of the present invention, and Figures 2 and 3 are
The figures are bidirectional cross-sectional views of two other embodiments, and FIG. 4 is a cross-sectional view of a conventional general cone-shaped speaker.
FIGS. 5a and 5b are diagrams for explaining the operation and frequency characteristics of the conventional example, and FIG. 6 is a diagram for explaining the frequency characteristics. 1 is the diaphragm, 2 is the voice coil, 3 is the bobbin,
4 is an edge, 5 is a damper, and 6 is a spacer.

Claims

[Claims for Utility Model Registration] 1. A bobbin 3 with a voice coil 2 wound around the lower end is fixed to the inner periphery of the C-shaped diaphragm 1, and a damper 5 is attached to the bobbin 3. In a cone-shaped speaker having a vibration system in which edges 4 are respectively bonded to the outer periphery, the diaphragm 1 has a large half-apex angle along the circumferential direction in a region including a nodal circle C near the top of the diaphragm 1. Category 1a and
Sections 1b with small half apex angles are formed alternately at multiple locations, and sections 1a with large half apex angles are formed alternately.
Either a thin part 1c is provided in the section 1b where the half apex angle is small, or a thick part 1d is provided in the section 1b where the half apex angle is small, or a thin part is provided in the section where the half apex angle is large, and a section where the half apex angle is small. A cone-shaped speaker characterized by having a configuration in which the stiffness of the base of the diaphragm 1 is made to vary depending on the location by providing a thick wall portion in each of the diaphragm 1. 2. Utility model registration claim 1, characterized in that the top part of the diaphragm 1 is cut off in a section with a small half-vertical angle, and a spacer 6 made of a rigid body is interposed in the gap between the cut part and the bobbin 3. Cone-shaped speaker as described in section.