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Micro linear vibrator

A vibrator, linear technology, applied in electrical components, electromechanical devices, etc., can solve the problems of sparks, electromagnetic interference, easy wear, etc., and achieve the effects of low manufacturing cost, no sparks and electromagnetic interference, and long life.

Inactive Publication Date: 2009-07-08
ZHEJIANG LUFA MICRO MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used miniature linear vibrator is usually equipped with a miniature vibration motor. Whether the miniature vibration motor is cylindrical or flat, it is composed of a motor and an eccentric weight. The rotation of the motor drives the rotation of the eccentric weight. As a result, vibration is generated, and these DC motors generally have bearings, brushes and commutators. The eccentric rotor has high requirements on the materials of bearings, brushes and commutators in the harsh environment of high-speed rotation. Even so, with The biggest problem with motors with brushes and commutators is that they are prone to wear and tear, have a short lifespan, produce sparks at the same time, and have electromagnetic interference

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the miniature linear vibrator in this embodiment is composed of a coil 1, a mountain-shaped iron core 2, a magnetic steel 3, a vibrating body 4, a supporting frame-shaped reed 5 and a square shell 6, and the mountain-shaped iron core 2 is arranged on the shell 6, a coil 1 is wound on its central axis, and the two ends of the coil 1 are drawn out through wires. Above the mountain-shaped iron core 2, a vibrating body 4 and two magnetic steels 3 fixed therein by glue, the magnetic steel 3 Facing the two depressions of the mountain shape of the mountain-shaped iron core 2, the vibrating body 4 is connected to the shell 6 through the reed 5, and one N pole of the magnetic steel 3 faces downward, and the other N pole faces upward. The bottom edge of reed 5 is welded on the bottom of housing 6 inwalls, and mountain-shaped iron core 2, magnetic steel 3 and vibrating body 4 are all arranged in it, and 2 sides of supporting reed 5 are spot-welded with b...

Embodiment 2

[0026] Such as figure 2 As shown, the miniature linear vibrator in this embodiment consists of a coil 1', a mountain-shaped iron core 2', a magnetic steel 3', a vibrating body 4', and a suspended "Z" shape on both sides above the vibrating body 4'. The reed 5' and the square shell 6' are composed, the mountain-shaped iron core 2' is arranged at the bottom of the shell 6', and a coil 1' is wound on its central axis, and the two ends of the coil 1' are drawn out through wires, and the mountain-shaped iron core 2' There is a vibrating body 4' and two pieces of magnetic steel 3' fixed therein by glue, the magnetic steel 3' is facing the two depressions of the mountain shape of the mountain-shaped iron core 2', and the vibrating body 4' is connected by a reed 5' In the shell 6', one N pole of the magnetic steel 3' faces downward, and one N pole faces upward. One end of the reed 5' is spot welded to the outer side of the vibrating body 4', and the other side is snapped to the midd...

Embodiment 3

[0028] Such as image 3 As shown, the miniature linear vibrator in the present embodiment is composed of a coil 1 ", a mountain-shaped iron core 2 ", a magnetic steel 3 ", a vibrating body 4 ", a silicon rubber body 5 ", and a square shell 6 ", and the mountain-shaped iron core 2 " It is arranged on the bottom of the casing 6", and its central axis is wound with a coil 1". A piece of magnetic steel 3″, the magnetic steel 3″ is facing the two depressions in the mountain shape of the mountain-shaped iron core 2″, the vibrating body 4″ is connected to the shell 6″ through the silicon rubber body 5″, and the N pole of the magnetic steel 3″ is facing downward , a piece of N-pole facing upward. The silicone rubber body 5" fills the gap between the vibrating body 4" and the shell 6", and only needs to be connected between the two. It can be potted and can be wavy , and other shapes are also possible.

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Abstract

A miniature linear vibrator consists of a coil, a hill-shaped iron core, magnet steel, a vibration body, a jettison device and a quadrate housing. The hill-shaped iron core is arranged on the bottom in the housing, the coil is wound on the central shaft thereof, the two ends of the coil are led out through a lead, the vibration body and two pieces of magnet steel embedded in vibration body are arranged over the hill-shaped iron core, the magnet steel is just opposite to two hill-shaped recesses on the hill-shaped iron core, the vibration body is connected with the housing through the jettison device, and the magnetic poles of two pieces of magnet steel faces toward heteropole. The miniature linear vibrator has the advantages of simple structure, light weight, low manufacturing cost, long service life, and no spark and electromagnetic interference.

Description

technical field [0001] The invention relates to a vibrator, in particular to a miniature linear vibrator used in mobile communication equipment. Background technique [0002] Mobile communication devices (such as mobile phones) need to use micro-vibrators as silent signal source components; there are also some other fields that require silent signal source prompts (such as game consoles, medical equipment, etc.) also need to use micro-vibrators. The currently used miniature linear vibrator is usually equipped with a miniature vibration motor. Whether the miniature vibration motor is cylindrical or flat, it is composed of a motor and an eccentric weight. The rotation of the motor drives the rotation of the eccentric weight. As a result, vibration is generated, and these DC motors generally have bearings, brushes and commutators. The eccentric rotor has high requirements on the materials of bearings, brushes and commutators in the harsh environment of high-speed rotation. Even...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K33/18
Inventor 陆勤高宜杭钱学峰赵秉生倪友清
Owner ZHEJIANG LUFA MICRO MOTOR
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