CN202004958U

CN202004958U - Loudspeaker

Info

Publication number: CN202004958U
Application number: CN2011200341154U
Authority: CN
Inventors: 薛德祥
Original assignee: ZHEJIANG BOSS ELECTRONICS CO Ltd
Current assignee: ZHEJIANG BOSS ELECTRONICS CO Ltd
Priority date: 2011-01-26
Filing date: 2011-01-26
Publication date: 2011-10-05
Anticipated expiration: 2021-01-26

Abstract

A loudspeaker is characterized in that T iron is fixedly arranged at the bottom of a frame, and a positioning sheet, an upper clamp plate, a permanent magnet and U-shaped iron are axially fixed in sequence upwards. As a magnetic circuit component is positioned in a sound cone, the integral thickness is obviously reduced; and the magnetism-resistant and heat-transferring metal positioning sheet is adopted to provide conditions for a low-impedance voice coil, thus greatly improving power, and improving frequency respond curves, especially the curves on a low frequency band. The loudspeaker overcomes the technical difficulties of thicker dimension, larger impedance and smaller power in the prior art.

Description

Loud speaker

Technical field

The utility model belongs to loud speaker in International Patent Classification (IPC), microphone group, i.e. H04R, particularly moving-magnetic type loud speaker.

Background technology

Public permanent-magnet loudspeaker is made up of permanent magnet, T iron, the voice coil loudspeaker voice coil that is arranged in magnetic circuit, the sound basin at basin frame, place, basin frame bottom.The basin frame is added the thickness of permanent magnet, T iron, makes that total height is bigger.At present, use the electroacoustic apparatus of loud speaker to become compact, have relatively high expectations to dimensional requirement with to bass, prior art can not adapt to before.Through Chinese patent information initial survey, do not detect the otherwise effective technique scheme.

The utility model content

The purpose of this utility model is to provide a kind of thin loud speaker, and heat radiation simultaneously is good, and has preferably frequently sound equipment answer curve, particularly low-frequency range.

It is as follows to disclose new technical scheme:

A kind of loud speaker contains the basin frame at least, Nd-Fe-B permanent magnet, T iron, voice coil loudspeaker voice coil, sound basin, locating branch slice and blank holder, and integral body is the rotating shaft symmetry, it is characterized in that:

Upwards there are spacer, train wheel bridge, Nd-Fe-B permanent magnet and U iron in basin frame bottom successively by the fixing T iron of screw, and center bolt passes U iron, Nd-Fe-B permanent magnet, train wheel bridge, spacer, and is coaxial fixing with T iron;

Be arranged in the voice coil loudspeaker voice coil of the magnetic circuit that U iron, Nd-Fe-B permanent magnet, train wheel bridge constitutes, its lower end and sound basin, locating branch slice are coaxial fixing, and be unsettled on it;

Sound basin mouth and basin frame mouth are coaxial fixing, on blank holder is arranged.

Because voice coil loudspeaker voice coil, permanent magnet move in the sound basin outside the basin frame, so integral thickness obviously reduces; Adopt the metal spacer simultaneously, have every magnetic and good conductive force, make the Low ESR of voice coil loudspeaker voice coil had may, thereby the bigger power that promoted and has improved frequency response curve, low-frequency range particularly.

Description of drawings

Figure is that the axle of an embodiment of the utility model cuts open schematic diagram.Wherein: 1, basin frame 2, screw 3, T iron 4, spacer 5, center bolt 6, train wheel bridge 7, Nd-Fe-B permanent magnet 8, voice coil loudspeaker voice coil 9, U iron 10, locating branch slice 11, sound basin 12, blank holder

Embodiment

A kind of loud speaker contains basin frame 1 at least, Nd-Fe-B permanent magnet 7, T iron 3, voice coil loudspeaker voice coil 8, sound basin 11, locating branch slice 10 and blank holder 12, and integral body is the rotating shaft symmetry, it is characterized in that:

The T iron 3 that basin frame 1 bottom is fixed by screw 2 upwards has spacer 4, train wheel bridge 6, Nd-Fe-B permanent magnet 7 and U iron 9 successively, and center bolt 5 passes U iron 9, Nd-Fe-B permanent magnet 7, train wheel bridge 6, spacer 4, and is coaxial fixing with T iron 3;

Be arranged in the voice coil loudspeaker voice coil 8 of the magnetic circuit of U iron 9, Nd-Fe-B permanent magnet 7, train wheel bridge 6 formations, its lower end and sound basin 1, locating branch slice 10 coaxial fixing, its upper end is unsettled;

11 mouthfuls in sound basin is coaxial fixing with 1 mouthful on basin frame, on blank holder 12 is arranged.

The lead-out wire insulation of voice coil loudspeaker voice coil 8 is fixed on the basin frame 1.

Claims

1. a loud speaker contains basin frame (1) at least, Nd-Fe-B permanent magnet (7), T iron (3), voice coil loudspeaker voice coil (8), sound basin (11), locating branch slice (10) and blank holder (12), and integral body is the rotating shaft symmetry, it is characterized in that:

A, basin frame (1) bottom are by the fixing T iron (3) of screw (2), spacer (4), train wheel bridge (6), Nd-Fe-B permanent magnet (7) and U iron (9) are upwards arranged successively, center bolt (5) passes U iron (9), Nd-Fe-B permanent magnet (7), train wheel bridge (6), spacer (4), and is coaxial fixing with T iron (3);

B, be arranged in the voice coil loudspeaker voice coil (8) of the magnetic circuit that U iron (9), Nd-Fe-B permanent magnet (7), train wheel bridge (6) constitutes, its lower end and sound basin (1), locating branch slice (10) are coaxial fixing, and be unsettled on it;

C, sound basin (11) mouthful with basin frame (1) mouthful coaxial fixing, on blank holder (12) is arranged.