CN104853295A

CN104853295A - Loudspeaker

Info

Publication number: CN104853295A
Application number: CN201410055807.5A
Authority: CN
Inventors: 刘志强
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-02-14
Filing date: 2014-02-14
Publication date: 2015-08-19

Abstract

A loudspeaker mainly comprises a magnet part, a support, a voice coil, a spring centering disc, a dust cap, an elastic edge, a concavoconvex diaphragm, a voice coil electric connecting line, and a related locking piece; the loudspeaker omits partial conventional a magnetic conductive plate so as to reduce the thickness, size and weight, thus reducing voice coil mechanical damage caused by non-axial direction swing motions generated in voice coil working; the loudspeaker is good in heat radiation, and can better output sound waves.

Description

A kind of loud speaker

Technical field:

The present invention relates to dynamic speaker manufacturing technology field, refer in particular to the constructing technology of the electronic coil-moving speaker of the vibrating diaphragm adopting concaveconvex shape.

Background technology:

The electronic coil-moving speaker of the vibrating diaphragm of known employing concaveconvex shape, primarily of magnet, there is the T-shaped magnetic conductive board 1 of the soft iron stem magnetic conductor of thermal vias, the magnet assembly that magnetic conductive board 2 is formed, voice coil loudspeaker voice coil, spring centring disk (is also called bullet ripple, the titles such as spring basin), the vibrating diaphragm of concaveconvex shape (or claim cone, sound basin, there is multiple on-plane surface concaveconvex shape, such as conical basin, elliptic conic shape basin etc., material is adopted to have aluminium alloy vibrating diaphragm, almag vibrating diaphragm, pottery vibrating diaphragm, carbon fiber vibrating diaphragm, bulletproof cloth vibrating diaphragm, glass fibre vibrating diaphragm, propylene vibrating diaphragm, paper vibrating diaphragm etc., ), elasticity ring, vibrating diaphragm frame is (also referred to as support, sound basin stand) etc. related accessories and securing member form, magnet in magnet assembly is the magnet configurations adopting axial magnetic circuit, so the T-shaped magnetic conductive board 1 of the soft iron stem magnetic conductor of thermal vias must be had and magnetic conductive board 2 is installed on magnet two magnetic pole strengths, then the work radial magnetic circuit magnetic gap of voice coil loudspeaker voice coil is formed by the gap between soft iron stem magnetic conductor and magnetic conductive board 2 centre bore, and the work radial magnetic circuit magnetic gap of voice coil loudspeaker voice coil directly can not be made up of the magnetic pole strength of magnet, above-mentioned loud speaker also adopts installs spring centring disk and vibrating diaphragm central part close positions the same one end being bonded in speech coil framework, and by magnet assembly, spring centring disk, these three devices of voice coil loudspeaker voice coil, the mode of all or part of convex surface (center top) position being arranged at the vibrating diaphragm of concaveconvex shape, be unfavorable for the thickness reducing loud speaker, volume and weight, when being unfavorable for reducing voice coil loudspeaker voice coil work, waving of issuable non axial motion causes mechanical damage voice coil loudspeaker voice coil, is unfavorable for better exporting sound wave.

In order to solve above-mentioned unfavorable problem, inventor has devised a kind of loud speaker.

Summary of the invention:

Technical characteristics of the present invention is: magnet assembly, spring centring disk and voice coil loudspeaker voice coil are all arranged in the concave surface position of the vibrating diaphragm of concaveconvex shape, the present invention is primarily of the formation such as vibrating diaphragm (when elasticity ring is pre-set at the vibrating diaphragm marginal portion of concaveconvex shape in a pre-installation, being described as the vibrating diaphragm of the concaveconvex shape being with elasticity ring), elasticity ring, voice coil loudspeaker voice coil electric connection line and associated fasteners of magnet assembly, support, voice coil loudspeaker voice coil, spring centring disk, dust cap, concaveconvex shape, wherein magnet assembly is formed primarily of two groups of hollow cylinder magnet groups, two hollow cylinder magnetic conductors, two groups of described hollow cylinder magnet groups have heteropolarity radial magnetic field characteristic and different-diameter, wherein large one group of diameter is defined as outer hollow cylinder shape magnet group, diameter is little one group be defined as inner hollow cylinder shape magnet group, two hollow cylinder magnet unit with heteropolarity radial magnetic field characteristic that often organizing all has diameter identical are formed, described hollow cylinder magnet unit can be that ferromagnetic material makes an integrally formed hollow cylinder body structure form, also can be to be combined by polylith arc ferromagnetic material magnetic watts type construction and assembly to form hollow cylinder body structure form, two described hollow cylinder magnetic conductors adopt the material with high permeability to make, there is different-diameter, inner surface heteropolarity magnetic field magnetic conduction connection (closing) that the outer surface heteropolarity magnetic field magnetic conduction that the hollow cylinder magnetic conductor that wherein diameter is large is used for outer hollow cylinder shape magnet group is communicated with (close), hollow cylinder magnetic conductor that diameter is little is used for inner hollow cylinder shape magnet group, during installation, it is inner that inner hollow cylinder shape magnet group is arranged at outer hollow cylinder shape magnet group, the spatial placement that the difference of the inner surface diameter of the outer surface of inner hollow cylinder shape magnet group magnet and the magnet of outer hollow cylinder shape magnet group is formed is voice coil loudspeaker voice coil coil working magnetic gap, realize utilizing the magnetic pole strength of magnet directly to form the radial magnetic gap of voice coil loudspeaker voice coil work, obtain larger magnetic field intensity, described voice coil loudspeaker voice coil mainly refers to the structure containing coil and skeleton, and the present invention arranges two coils working in the magnetic gap of different magnetic field polarity and speech coil framework and forms the described voice coil loudspeaker voice coil that the present invention and known technology distinguish, any one or all in two coils adopts and turns to stranded conductor situation that coil formed multiple coil in same magnetic interstitial site and should be considered as the coil that the present invention describes, two described coils are arranged at the diverse location on speech coil framework, and match with the radial magnetic gap locus that two groups of hollow cylinder magnet groups are formed, the current direction of adjustment change two coils realizes driving the same direction axial motion of voice coil loudspeaker voice coil, avoids the difference due to coil winding direction and residing polarity of the magnetic field and the counteracting of two coil axial driving forces that causes, described support employing has the material manufacture of high strength and forms primarily of two parts, a part is positioned at the concave surface of the vibrating diaphragm with concaveconvex shape, another part is positioned at the convex surface of the vibrating diaphragm with concaveconvex shape, the support of concave surface is mainly used in fastening carrying outer hollow cylinder shape magnet group and relevant hollow cylinder magnetic conductor, the support of convex surface is mainly used in fastening carrying inner hollow cylinder shape magnet group and relevant hollow cylinder magnetic conductor, two parts support is undertaken combining or taking apart by the securing member of bracket edge, bracket edge is provided with the fastening mounting hole site of whole loud speaker, described spring centring disk is made by having the flexible material of height toughness, for installing the balance centering location carrying of voice coil loudspeaker voice coil, the central part of spring centring disk is connected and installed in one end of speech coil framework, the central part connection of the other end of speech coil framework and the vibrating diaphragm of concaveconvex shape, realizes the location and installation of more balance, accurate and firm voice coil loudspeaker voice coil, the vibrating diaphragm of described concaveconvex shape mainly refers to the diaphragm of loudspeaker structure of the molded non-planar with concave surface and convex surface, than widely used cone-shaped diaphragm as is well known (also referred to as cone benzvalene form vibrating diaphragm), oval vibrating diaphragm etc., described concave surface and convex surface refer to two faces of the vibrating diaphragm of concaveconvex shape, obviously, known most of vibrating diaphragm inherently only has two faces, should not affect actual configuration feature indication to the different appellations on vibrating diaphragm two sides, than if any concave surface is called loud speaker front or above, convex surface is called reverse side or etc. below, the material of described dust cap employing material hardness identical with the diaphragm materials of concaveconvex shape or more high rigidity and lighter material is made, be installed on an end position of voice coil loudspeaker voice coil and the connection of spring centring disk closely, the medium-high frequency sound wave realizing better improving loud speaker exports, realize object of the present invention.

Obviously, magnet assembly, spring centring disk and voice coil loudspeaker voice coil are all arranged in the concave surface position of the vibrating diaphragm of concaveconvex shape by the present invention, make full use of concave surface locational space, decrease the thickness of loud speaker, volume and weight, reduce waving of issuable non axial motion when voice coil loudspeaker voice coil works and cause mechanical damage voice coil loudspeaker voice coil, be beneficial to heat radiation and better export sound wave.

Accompanying drawing illustrates:

Be about the description of the drawings of the present invention now, this accompanying drawing is cutaway view of the present invention, in the accompanying drawings: 1, the vibrating diaphragm of 5 be support, 2 be dust cap, 3 to be spring centring disk, 4 the be concaveconvex shapes of band elasticity ring; In figure, curved lines is expressed as rectangular box in voice coil loudspeaker voice coil and coil, figure and is expressed as two inner hollow cylinder shape magnets and two outer hollow cylinder shape magnets; In figure, the thickest black line segment is expressed as hollow cylinder magnetic conductor.

Embodiment:

The explanation about embodiments of the invention now, please refer to accompanying drawing, in the present embodiment: two same diameter are that inner hollow cylinder shape magnet (in figure shown in the rectangular box) close installation of a group is in the outer surface of inner hollow cylinder shape magnetic conductor (in figure shown in the thickest black line segment); Two same diameter are that outer hollow cylinder shape magnet (in figure shown in the rectangular box) close installation of a group is in the inner surface of outer hollow cylinder shape magnetic conductor (in figure shown in the thickest black line segment); Inner hollow cylinder shape magnetic conductor (in figure shown in the thickest black line segment) and support (1) fastening installation; Outer hollow cylinder shape magnetic conductor (in figure shown in the thickest black line segment) and support (5) fastening installation; Spring centring disk (3) central part is installed on one end of voice coil loudspeaker voice coil and coil (in figure shown in curve), its edge part is installed on support (5); What vibrating diaphragm (4) the edge ring part of the concaveconvex shape with elasticity ring was installed on support (1) keeps to the side on position, the central part close installation of the vibrating diaphragm (4) of the concaveconvex shape with elasticity ring is in the other end of voice coil loudspeaker voice coil and coil (in figure, curve represents), and dust cap (2) close installation is in spring centring disk and the voice coil loudspeaker voice coil of voice coil loudspeaker voice coil connection and an end position of coil; With reference to accompanying drawing, can obviously find out and understand, magnet assembly of the present invention, spring centring disk and voice coil loudspeaker voice coil are all arranged in the concave surface position of the vibrating diaphragm of concaveconvex shape, draw voice coil loudspeaker voice coil coil electric connection line, the electric current access polarity changing voice coil loudspeaker voice coil coil flows to the axis that can realize equidirectional and drives, drive the vibrating diaphragm of concaveconvex shape and spring centring disk and dust cap to carry out axial vibration campaign, promote air and export sound wave, complete the present embodiment.

Claims

1. a loud speaker, primarily of vibrating diaphragm, elasticity ring, the formation such as voice coil loudspeaker voice coil electric connection line and associated fasteners of magnet assembly, support, voice coil loudspeaker voice coil, spring centring disk, dust cap, concaveconvex shape, it is characterized in that: magnet assembly, spring centring disk and voice coil loudspeaker voice coil are all arranged in the concave surface position of the vibrating diaphragm of concaveconvex shape.