CN2523162Y

CN2523162Y - Voice coil

Info

Publication number: CN2523162Y
Application number: CN02215494U
Authority: CN
Inventors: 赵慧钧
Original assignee: Speaker Electronic Jiashan Co Ltd
Current assignee: Speaker Electronic Jiashan Co Ltd
Priority date: 2002-01-28
Filing date: 2002-01-28
Publication date: 2002-11-27
Anticipated expiration: 2012-01-28
Also published as: EP1351548A2; EP1351548A3

Abstract

A voice coil which can prevent the loosed loop phenomenon comprises a cylindrical voice coil framework 1 and a coil 4, wherein, the coil is twisted round the lower part of the voice coil framework and comprises a liner ring 3; a nosing 2 is arranged at the upper end of the liner ring and an another nosing 5 is also arranged at the lower end of the liner ring; the liner ring is positioned between the coil and the voice coil framework; the nosing 2 at the upper end of the liner ring is laminated with the upper end surface of the coil 4; the nosing 5 at the lower end of the liner ring is laminated with the lower end surface of the coil 4; the glue is used for bonding among the framework, the liner ring and the coil. The coils are connected into a whole through the liner ring and the liner ring is adhered to the framework in a big surface with firm combination, thus, a loudspeaker can work normally when the input power is large and the temperature is high, and malfunction of loosening loops or dropping off of the voice coil can not be generated.

Description

Can prevent the voice coil loudspeaker voice coil of diffusing circle

(1) technical field:

The utility model relates to a kind of structure of speaker element, a kind of voice coil loudspeaker voice coil that can prevent diffusing circle.

(2) background technology:

Voice coil loudspeaker voice coil is the driving element of loud speaker, and alloy in lightweight (as almag), engineering plastics or the paper etc. that generally adopt non-magnetic conduction are as skeleton, and coil forms with the coiling of high temperature insulation enamelled wire, and coil and skeleton are bonded together with glue.When having signal code to flow through in the voice coil loudspeaker voice coil, voice coil loudspeaker voice coil is subjected to magneticaction in magnetic gap, will drive the vibration of sound basin and sounding.During the work of the voice coil loudspeaker voice coil of supersound projector, because power is big, mass of coil is big, vibrate stressed greatlyyer, simultaneously, the temperature rise of coil is also higher, the after-tack of being heated of the glue of coil.Therefore, supersound projector in the course of the work, particularly when volume is opened very greatly, the phenomenon of loosing circle or coming off easily takes place in coil, and loud speaker is damaged.

(3) summary of the invention:

The utility model is intended to propose the structure that a kind of coil is difficult for the diffusing loudspeaker voice coil that encloses or come off, a kind of voice coil loudspeaker voice coil that can prevent diffusing circle.

This voice coil loudspeaker voice coil that can prevent diffusing circle, comprise columnar speech coil framework and coil, coil is wrapped in the bottom of speech coil framework, it also comprises a grommet, there is a chimb upper end of grommet, and also there is a chimb lower end of grommet, and grommet is between speech coil framework and the coil, the chimb of grommet upper end and the upper surface of coil fit, and the chimb of grommet lower end and the lower surface of coil fit.All use glue together bonding between skeleton, grommet and the coil.

Grommet in the voice coil loudspeaker voice coil of this circle that can prevent to loose connects to coil as a whole, and grommet and skeleton are again that large tracts of land is bonding, in conjunction with firm, thereby, very big in the loud speaker input power, when temperature rise is very high, still can operate as normal, the fault of loosing circle or coming off can not take place in voice coil loudspeaker voice coil.

(4) description of drawings:

Accompanying drawing 1 is this structure chart that can prevent the voice coil loudspeaker voice coil of diffusing circle;

The another kind of structure chart of the voice coil loudspeaker voice coil that accompanying drawing 2 encloses for preventing to loose;

Accompanying drawing 3 is the partial structurtes figure of skeleton, grommet, coil;

Accompanying drawing 4 is the partial structurtes figure of another kind of skeleton, grommet, coil;

The axial view of the voice coil loudspeaker voice coil that accompanying drawing 5 encloses for preventing to loose;

Another structure chart of the voice coil loudspeaker voice coil that accompanying drawing 6 encloses for preventing to loose.

(5) embodiment:

As shown in Figure 1, this voice coil loudspeaker voice coil that can prevent diffusing circle comprises columnar speech coil framework 1 and coil 4, and coil is wrapped in the bottom of speech coil framework.It also comprises a grommet 3, there is a chimb 2 upper end of grommet, and also there is a chimb 5 lower end of grommet, and grommet is between speech coil framework and the coil, the chimb 2 of grommet upper end fits with the upper surface of coil 4, and the chimb 5 of grommet lower end fits with the lower surface of coil 4.Bonding between skeleton, grommet and the coil with glue.

As shown in Figure 2, this lower surface of the grommet 3 in the diffusing voice coil loudspeaker voice coil that encloses that can prevent can not have chimb yet, but there is a chimb 6 lower surface of skeleton 1, and the lower surface of this chimb and coil 4 fits.The chimb of grommet upper end matches with the chimb on the skeleton lower surface, is combined into an integral body with coil, also can play the effect that prevents that well voice coil loudspeaker voice coil from loosing circle or coming off.

As shown in Figure 3, the chimb 2,5 of the upper/lower terminal of the grommet 3 of the voice coil loudspeaker voice coil of this circle that prevents to loose can be the flange (promptly the dotted portion upset forms flange among the figure) that outwards overturns and form in the upper and lower end of grommet 3.Such structure, the flange on the grommet can turn over the type of making after the coil winding finishes, simplified the manufacture craft of grommet.

As shown in Figure 4, this voice coil loudspeaker voice coil of diffusing circle that can prevent is when adopting structure shown in Figure 2, the chimb 2 of the upper end of grommet 3 can be the flange that outwards overturns and form in the grommet upper end, and the chimb 6 of the lower surface of skeleton 1 can be the flange (promptly the dotted portion upset forms flange among the figure) that outwards overturns and form in the skeleton bottom.

As shown in Figure 5, convenient on the flange of the end of described grommet 3 for the system of turning over, can also be uniform-distribution with some breach 7.

As shown in Figure 6, grommet 3 in the voice coil loudspeaker voice coil of this circle that can prevent to loose also can be several mutual disjunct lead-ins 8, inner periphery along coil evenly distributes, the end upset of lead-in, fit with the end face of coil, can make coil be combined into an integral body equally, and make itself and skeleton bonding securely, play the effect that prevents that voice coil loudspeaker voice coil from loosing circle or coming off.

The material of grommet can be the alloy in lightweight of non-magnetic conduction, also can be plastic film or paper.When using alloy in lightweight, should to prevent to produce eddy current, can be used as the expansion joint of expanding with heat and contract with cold again vertically opening a groove.When adopting plastic film or paper, the upset portion of end should open several breach more, is beneficial to the flange operation.

Claims

1, a kind of voice coil loudspeaker voice coil that can prevent diffusing circle, comprise columnar speech coil framework (1) and coil (4), coil is wrapped in the bottom of speech coil framework, it is characterized in that it also comprises a grommet (3), there is a chimb (2) upper end of grommet, also there is a chimb (5) lower end of grommet, grommet is between speech coil framework and the coil, the chimb (2) of grommet upper end fits with the upper surface of coil (4), the chimb of grommet lower end (5) fits with the lower surface of coil (4), and is bonding with glue between skeleton, grommet and the coil.

2, the voice coil loudspeaker voice coil that can prevent diffusing circle as claimed in claim 1 is characterized in that the lower surface of grommet (3) does not have chimb, and there is a chimb (6) lower surface of described skeleton (1), and the lower surface of this chimb and coil (4) fits.

3, the voice coil loudspeaker voice coil that can prevent diffusing circle as claimed in claim 1, chimb (2), (5) that it is characterized in that described grommet (3) upper/lower terminal are the flange that outwards overturns and form in the upper and lower end of grommet (3).

4, the voice coil loudspeaker voice coil that can prevent diffusing circle as claimed in claim 2, the chimb (2) that it is characterized in that described grommet (3) upper end is the flange that outwards overturns and form in the grommet upper end, and the chimb (6) of the lower surface of described skeleton (1) is the flange that outwards overturns and form in the skeleton bottom.

5,, it is characterized in that being uniform-distribution with some breach (7) on the flange of end of described grommet (3) as the voice coil loudspeaker voice coils of claim 3 or the 4 described circles that can prevent to loose.

6, as the voice coil loudspeaker voice coils of claim 3 or the 4 described circles that can prevent to loose, it is characterized in that described grommet is several mutual disjunct lead-ins 8, evenly distribute that the end upset of lead-in fits with the end face of coil along the inner periphery of coil.