High-quality electromagnetic speaker having improved accuracy of air gap

Abstract

An embodiment relates to a high-quality electromagnetic speaker having improved accuracy of an air gap, wherein coils stacked on an upper part and a lower part of a vibrating module are reliably and accurately set by respective fixing members, whereby mutually symmetrical air gaps including coils arranged therein and having an equal interval can be formed at an upper part and a lower part with respect to a vibrating plate. Accordingly, the invention can be very usefully used in the electromagnetic speaker field that aims to exclude the distortion caused by asymmetry of air gaps and the non-uniformity of other acoustic conversion characteristics.

Description

technical field [0001] This embodiment relates to a high-quality electromagnetic speaker with improved air gap precision. More specifically, it relates to a high-quality electromagnetic speaker with improved air gap precision in which the components stacked on the vibration module are reliably and accurately arranged by each fixing member. The upper and lower coils, so that the upper and lower parts of the vibration plate can be used as a reference to form an air gap that makes the coils symmetrical to each other and at the same interval, so that distortion and other acoustic conversion characteristics caused by the asymmetry of the air gap can be eliminated. of imbalance. Background technique [0002] In general, for an electromagnetic speaker, the principle of generating power through the mutual interaction of the AC magnetic flux generated by the coil wound with the wire and the DC magnetic flux induced by the permanent magnet is the same as that of the coin type, but it ...

AI Technical Summary

Problems solved by technology

[0007] However, for the conventional electromagnetic speaker as described above, since the magnetic circuit forms a structure in which the coil is directly inserted into the permanent magnet, the position of the coil cannot be accurately arranged. The air gaps between the upper and lower coils are symmetrical to each other and maintain the same distance. There is a problem that distortion and other unbalanced sound conversion characteristics caused by the asymmetry of the air gap cannot be eliminated.

[0008] And, since a gap guide is provided between a plurality of permanent magnets of the magnetic circuit after forming a pair of magnetic circuits for snapping the coil inside the permanent magnets, an assembly tolerance of the magnetic circuit has to be generated, and therefore, it is difficult to maintain the upper part. The coil is symmetrical to the lower coil, and it is difficult to balance the sound pressure and characteristics during the operation

[0009] In addition, the lower damping ring, the vibrating plate, and the upper damping ring are sequentially assembled on the inner surface of the ring-shaped slit guide, and since the vibrating plate is supported by another upper damping ring and the lower damping ring, not only the number of parts but also the assembly process is reduced. If there are too many, it will also lead to the inability to achieve modularization or even unitization. As a result, the height of the gap and the size of the damping ring may be uneven. If such unevenness occurs, it is not conducive to the balanced performance of characteristics, sound pressure, and regenerated frequencies, not only that, there will be a possibility of bass leakage

Images