CN1202300A

CN1202300A - Central or circumferential suspension for moving assembly of moving-coil loudspeaker

Info

Publication number: CN1202300A
Application number: CN96198216.0A
Authority: CN
Inventors: 弗雷德里克·格兰杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-11-10
Filing date: 1996-10-03
Publication date: 1998-12-16
Also published as: EP0860094B1; CH687353A5; JP2000513512A; WO1997018688A1; ATE194258T1; EP0860094A1; DE69609078D1

Abstract

A suspension comprises a guiding groove (4) and a flexible member (3) supporting a voice coil (7) and a diaphragm (6) diametrically centred on the core. A magnetic circuit including of the core (5), a lower field plate (10), a ring-shaped magnet (9) and an upper field plate (8) supplies the coil (7) with the magnetic energy needed to move the diaphragm (6) back and forth. Furthermore, the guiding groove (4) and the flexible member (3) return the moving assembly (6, 7) to its starting position at the centre of the guiding groove (4).

Description

Be used for the center of moving component of coil-moving speaker or the suspension of circumference

The present invention relates to be used for the center of moving component of coil-moving speaker or the suspension of circumference, it can guarantee the high precision fixed core of

movement parts

6,7 by removing bearing, and air gap 2 dwindles and diaphragm gap maximum behind in the magnetic circuit.

In the full view of Fig. 1,

magnetic circuit

5,8,9,10, moving component 7, gathering sill 4 and flexible member 3 are illustrated together so that can be well understood to the location and the function of each assembly.

Fig. 2 is the apart view of the core of Fig. 1.The bottom that can see gathering sill 4 is round-shaped, and it makes the centering of flexible member and the possibility that becomes of reversing, and thereby makes the centering of the moving component of being made up of voice coil and diaphragm and the possibility that becomes of reversing.

Fig. 3 illustrates on the core that is not in Fig. 2 but the another kind location of the suspension on the diffusion nose.But all characteristics are similar.

In Fig. 4,5,6,7, two types bearing is shown: ball bearing and roller bearing.It should be noted that and to use active arbitrary shape, as biconvex lens shape and triangle, rhombus, full annular etc.

The connection that can see Fig. 4,6,7 ball not only can be positioned on the internal diameter or external diameter of hanging ring, also can be positioned at these balls, roll on the axle of bolt, rhombus etc.

Fig. 8 and 9 also shows the possible another kind of position of gathering sill 4.Centering part 11 and 12 must be attached to the shell of loud speaker, but role is similar.

Two gathering sills and two flexible members also may be set rather than must rely on conventional circumference to hang, because this guiding has been proved to be enough.

The material of flexible member can be a rubber, plastics, felt etc.

The new characteristic that hangs is:

-mechanical property:

Realized the better centering of moving component

Prevented the parasitism vibration of moving component.

Reduced the size of shell and magnetic circuit

-magnetic characteristic

Reduced air gap width, make and may increase magnetic field.

Reduced magnetic loss.

-thermal characteristics

Owing to narrow air gap makes an interval of utmost point electrode tightr, make the better cooling that may realize moving-coil.

-sound characteristics

Conventional bearing is removed, and may make the gap at the back side bigger, thereby has reduced standing wave and diaphragm/bearing interference with important mode.

The accurately distortion that centering has reduced 3 times and other odd harmonic caused.

Prior mechanical damping has partly been eliminated undesirable audible vibration.

Therefore the analysis of small-signal is enhanced.

Claims

1, a kind ofly is used for the center of moving component or circumference that including of coil-moving speaker be connected to the voice coil of a diaphragm and hangs, it is characterized in that it comprises at least one gathering sill in one of retaining element of being formed on described loud speaker and is installed at least one soft resilient element in this groove to keep and to guide this moving component.

2, hang according to the center of claim 1 or circumference, the bottom that it is characterized in that this groove have one be used to realize this flexible member reverse and feel relieved round-shaped.

3, center or the circumference according to claim 2 hangs, and it is characterized in that this groove has the shape of a ring.

4, according at the center of one of preceding claim or circumference hang, it is characterized in that this flexible member is a ring, on the circumference of this ring, be distributed with a plurality of projectioies equably, realized being used to guiding the rolling of this ring in this groove of this moving component.

5, hang according to center or circumference, it is characterized in that it includes two grooves and two flexible members in one of preceding claim.