一种转动振动马达

Abstract

本实用新型涉及振动马达技术领域，公开了一种转动振动马达，包括具有容置空间的方形上壳、盖板、定子组件、转子组件、波浪形弹性件和固定轴，定子组件、弹性件和固定轴固定在上壳上，转子组件的一端套设于所述固定轴并与之转动连接，另一端与弹性件固定连接，转子组件和定子组件上下间隔于容置空间内，转子组件包括扇形偏心块、嵌于偏心块的永磁体和穿设于偏心块一侧圆心位置的固定轴，定子组件包括线圈，通过向线圈切换输入电流方向产生磁场与永磁体互吸互斥使得偏心块绕固定轴往复转动并藉由弹性件的回弹力复位，偏心块旋转时惯性能产生更大的离心力力矩，对称的波浪形弹性件确保振动力的稳定传递，从而实现更多元的振动方式和更强振感。

Claims

1. A rotary vibration motor, characterized by, The device includes a square upper shell with a accommodating space, a cover plate, a stator assembly, a rotor assembly, an elastic element, and a fixed shaft. The stator assembly, the elastic element, and the fixed shaft are fixed to the upper shell. One end of the rotor assembly is sleeved on the fixed shaft and rotatably connected to it, and the other end is fixedly connected to the elastic element. The rotor assembly and the stator assembly are spaced vertically within the accommodating space.

2. The rotary vibration motor of claim 1, wherein The upper shell includes a bottom wall and a side wall. A first fixing part for fixing the fixing shaft is protruding from the inner surface of the bottom wall near one side wall, and two second fixing parts for fixing the elastic element are protruding at intervals near the other side wall.

3. The rotary vibration motor of claim 2, wherein The cover plate has a third fixing part protruding from it, corresponding to the first fixing part.

4. The rotary vibration motor of claim 3, wherein The elastic element is a wavy spring sheet integrally stamped, comprising an odd number of continuously curved elastic portions and mounting portions symmetrically located on the same side of the free ends of the elastic portions.

5. The rotary vibration motor of claim 4, wherein, The elastic part is provided in at least three parts, including elastic arms spaced apart and connecting parts connecting the elastic arms. The connecting parts include a middle connecting part and side connecting parts symmetrical to both sides of the middle connecting part. The elastic arms include a middle elastic arm symmetrical to both sides of the middle connecting part and side elastic arms located on both sides of the middle elastic arm and connected to the mounting part. The mounting part is fitted to the inner surface of the bottom wall. A first through hole is provided at the center of the middle connecting part, and a second through hole is provided in the mounting part corresponding to the second fixing part.

6. The rotary vibration motor of claim 5, wherein, The rotor assembly includes a fan-shaped eccentric block that is symmetrical from left to right, a protrusion that protrudes from the center of the outer wall of one side of the arc surface of the eccentric block, a third through hole that passes through one side of the center of the eccentric block, a fourth through hole that passes through the eccentric block and is located between the protrusion and the third through hole, a sliding bearing that is embedded in the third through hole, a sliding plate and a washer located on the upper and lower sides of the sliding bearing, and a permanent magnet that passes through the upper and lower sides and is embedded in the fourth through hole; the protrusion has a fourth fixing part that protrudes from the first through hole.

7. The oscillating motor of claim 6, wherein: The center lines connecting the fourth fixing part, the third through hole, and the fourth through hole are on a straight line.

8. The rotary vibration motor of claim 7, wherein, The third fixing part and the first fixing part are respectively arranged. The upper and lower limits of the fixing shaft are located at the third fixing part and the first fixing part. The fixing shaft passes through the sliding bearing. The sliding piece is located between the third fixing part and the fixing shaft. The shim is sleeved on the fixing shaft and located between the sliding bearing and the first fixing part.

9. The rotary vibration motor of claim 8, wherein, The stator assembly includes a coil and a flexible circuit board; the flexible circuit board includes an internal power terminal and an external power terminal, the internal power terminal is fixed to the bottom wall, and the external power terminal extends from the side wall into the upper shell and is bent and fixed to the outer surface of the side wall; the coil is fixed to the internal power terminal and is arranged at intervals corresponding to the permanent magnet.

10. The rotary vibration motor of claim 9, wherein, The internal power terminal is adapted to the second fixing part by providing a through hole.

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