Magnetic driving mechanism and receiver

Abstract

Provided is a magnetic driving mechanism which comprises an armature, a coil, and an iron core. The armature comprises a fixed portion and a vibration transduction portion. The coil and the iron core are successively sleeved on the vibration transduction portion. The top side and the bottom side of the vibration transduction portion are equipped with permanent magnets fixedly connected with the inner surface of the iron core. The coil and the iron core are bonded so as to form a bonded surface. The inner cavity of the coil close to the bonded surface is extended towards the vibration transduction portion to form a protruded portion. The distance between the protruded portion and the vibration transduction portion is less than the distance between the permanent magnet and the vibration transduction portion. The magnetic driving mechanism suitable for a receiver employs the coil provided with the protruded portion and may prevent the receiver from being attracted by the permanent magnets when the receiver is subjected to impact or the armature has overlarge vibration amplitude, wherein the receiver being attracted by the permanent magnets may result in the failure of the receiver. The invention also relates to a receiver containing the above magnetic driving mechanism.

Description

technical field [0001] The invention relates to a magnetic drive mechanism and a receiver. Background technique [0002] The armature is an important part of the drive device in the receiver. It drives the diaphragm in the receiver to vibrate through its own vibration to transmit sound. If the armature is subjected to a large impact, the armature will easily move upward or It is sucked down to the magnet, so that the armature cannot continue to vibrate and make it invalid, so that the diaphragm cannot continue to vibrate, so that the entire receiver cannot work properly. [0003] In order to avoid the above situation, traditional earphones generally use a raised part on the armature to prevent the armature from being integrated with the magnet. Although such a setting can achieve a good effect, due to the distance between the magnet and the armature Smaller, the manufacturing process is more difficult; and it is easy to reduce the vibration amplitude of the armature, and t...

AI Technical Summary

Problems solved by technology

[0002] The armature is an important part of the drive device in the receiver. It drives the diaphragm in the receiver to vibrate through its own vibration to transmit sound. If the armature is subjected to a large impact, the armature will easily be sucked upward or downward by the magnet, which will cause the armature to fail to vibrate and make it invalid, so that the diaphragm will not continue to vibrate, so that the entire receiver cannot be normal. engineering work

[0003] In order to avoid the above situation, the traditional earphones generally use a raised part on the armature to prevent the armature from being integrated with the magnet. Although such a setting can achieve Very good effect, but because the distance between the magnet and the armature is small, its manufacturing process is difficult; and it is easy to reduce the vibration amplitude of the armature, and the audio range of the receiver will also become smaller, affecting the overall sound quality effect

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