| 主权项 |
1. A thin speaker structure, especially to a thin speaker body with a full height less than 10 mm, comprising:
a long support frame having a hollow portion in a center thereof and an elliptic step surface formed at a periphery thereof; a magnetic circuit member arranged in the hollow portion; a voice coil installed in the magnetic circuit member; a membrane arranged at an upper edge portion of the voice coil and an external periphery thereof fixed on the elliptic step surface to form a basic speaker structure; wherein the hollow portion, the magnetic circuit member and the voice coil are in circular shapes; and the membrane includes an elliptic surrounding and an elliptic body having a center portion and a peripheral portion; the peripheral portion is fixed to a bottom edge of an inner surface of the surrounding and the center portion corresponding to the peripheral portion defines a rigid strengthened region in a longer elliptic shape; the center portion has a length of a long side longer than a diameter of the voice coil at a predetermined distance; whereby the elliptic body is combined with the circular voice coil to form a vibrating structure in order to increase the rigidity of the membrane to reduce the radial segmented vibration of a long side of the membrane. |
