CN1085484C - Damper for use in loudspeaker - Google Patents
Damper for use in loudspeaker Download PDFInfo
- Publication number
- CN1085484C CN1085484C CN96103386A CN96103386A CN1085484C CN 1085484 C CN1085484 C CN 1085484C CN 96103386 A CN96103386 A CN 96103386A CN 96103386 A CN96103386 A CN 96103386A CN 1085484 C CN1085484 C CN 1085484C
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- China
- Prior art keywords
- damper
- frame
- mentioned
- speaker
- speaker frame
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- Expired - Fee Related
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Abstract
To attain partial thickened parts by obtaining a sufficient compliance and selecting properly the thickness by a metallic die. One end of plural movable arms 9b, 9c bridged between an inner circumferential frame 9A to which a voice coil bobbin is inserted and an outer circumferential frame 9B of almost elliptic shape engaged with a speaker frame 8 is supported to an outer circumferential frame 9B at a position less than 45 deg. from the major axis direction of the outer circumferential frame 9B. Furthermore, a positioning groove 9a is formed to the outer circumferential frame 9B and engaged with a positioning projection 8b formed to a hold step 8a of the speaker frame 8 to make positioning and a butterfly damper 9 is made of a resin and formed integrally by the injection forming. A compliance of the same degree as a circular damper having a radius in matching with the length of the moving arms 9b, 9c with respect to the outer circumferential frame 9B is obtained. Even in the case of the butterfly damper 9 of an elliptic shape having difficulty in the positioning because of axial symmetry, the positioning with respect to the speaker frame 8 is facilitated.
Description
The present invention relates to a kind of damper that in loud speaker, uses.
The damper of loud speaker, except having damping action, also simultaneously as a kind of supporting mechanism be used for support speaker vibrating membrane (taper) thus the centre support this vibrating membrane.This damper, the same with the tapered edge parts of supporting the conical diaphragm neighboring, its shape should be made according to certain requirement, promptly moves easily on the direction of vibration of conical diaphragm, then has certain rigid (being difficult for moving) on vertical with it direction.
In addition, the damper of loud speaker has and prevents that coil from touching the effect of the pole piece and the yoke support of inside loudspeakers generally when the coil spool moves.Simultaneously, also have another kind of effect, that is, can make that conical diaphragm and the coil when inactive state all remains on the desirable tram.
On performance, the damper of loud speaker is the same with the tapered edge parts of supporting the conical diaphragm neighboring, and it will have influence on lowest resonance frequency f
0, and can move with same amplitude.Therefore, be necessary to make the material of formation damper and the shape of damper can both satisfy such requirement, promptly can adapt to conical diaphragm with the flexibility of appropriateness, and can be enough to suppress moving of transverse direction with any amplitude vibrations.
In addition, above-described speaker damper has, and makes cloth contain behind the resin pickup ripple type damper of hot briquetting again, slim bakelite plate or slim metallic plate are made stamping-out handles the butterfly shape damper that the back forms.
Yet, when above-mentioned damper being used for the centre of supporting ellipse shape vibrating membrane (taper), if make the external diameter of circular damper equate that with the minor axis of elliptic vibration film (taper) bore of circular damper will diminish.Thereby, just be difficult to obtain required compliance (compliance).So, obtain required compliance (compliance), just have to use more soft material, perhaps use the ripple type material.
But, even use more soft material like this, or at the ripple type material, in the external diameter of circular damper and circular damper that the minor axis of elliptic vibration film (taper) equates, because the bore of circular damper has diminished, still be difficult to obtain required compliance (compliance), thereby just be difficult to obtain desirable lowest resonance frequency f
0
The objective of the invention is and will address the above problem, thereby a kind of attenuator used in laudspeaker that has improved is provided, this damper can obtain required and enough compliances when being used for supporting the elliptic vibration film.
Scheme 1 described invention is the damper of a kind of use in loud speaker, it comprises the coil support portion that supports the voice coil loudspeaker voice coil pipe, be arranged at the outside of above-mentioned coil support portion and be installed on speaker frame installation portion in the speaker frame, and be erected at a plurality of moveable arms between above-mentioned coil support portion and the speaker frame installation portion, it is characterized in that above-mentioned damper has major diameter direction and minor axis direction, and an end of above-mentioned moveable arm is supported on above-mentioned speaker frame installation portion with the angles less than 45 degree when above-mentioned major diameter direction is seen.
Scheme 2 described inventions are the dampers according to scheme 1, it is characterized in that being formed with on above-mentioned speaker frame installation portion being convenient to the groove of locating in above-mentioned speaker frame.
The invention of scheme 3 is the dampers according to scheme 1 or 2, it is characterized in that above-mentioned coil support portion, speaker frame installation portion and moveable arm make by resin, and this three is formed one by injection-molded moulding.
The damper of use of the present invention in loud speaker, by the coil support portion of coming support coils by insertion voice coil loudspeaker voice coil pipe, in conjunction with and be installed on speaker frame installation portion in the speaker frame, and a plurality of moveable arms that are erected between them constitute, and an end of this moveable arm, be supported on the above-mentioned speaker frame installation portion with angles when the major diameter direction of damper is seen less than 45 degree, therefore, be equivalent to make the major diameter of moveable arm elongated, thereby can obtain the compliance of circular damper same degree, and this circular damper has the radius that the length with respect to the moveable arm of speaker frame installation portion matches, and the speaker frame installation portion is equivalent to the outer border of damper frame.
Support with respect to the moveable arm of speaker frame installation portion, it is the occasion that when the major diameter direction is seen, surpasses the miter angle degree, support zone can be biased to the minor axis direction of the damper of substantially elliptical, and can not make moveable arm elongated, therefore, compliance with circular damper same degree can diminish, and this circular damper has the radius that matches with respect to the length speaker frame installation portion, moveable arm.
In addition, on the speaker frame installation portion of the outer border frame that forms damper, be formed with the groove of being convenient in speaker frame, locate, therefore, even the occasion in the location than the damper of the line symmetric figure of difficulty also can be carried out the location in speaker frame easily.
Moreover, the coil support portion, speaker frame installation portion and the moveable arm that constitute damper are made by resin, and are formed one by this three of injection-molded moulding, therefore, as the damper that forms by stamping-out, limit by the thickness to raw material, the thickness of damper becomes unique, and the situation that is difficult to obtain required compliance is compared, can suitably set thickness by mold pressing, therefore, can cause that the wall thickness of part is crooked, thereby obtain enough compliances.
Above-mentioned purpose of the present invention and feature thereof can come further to be understood by following detailed description with to the reference of accompanying drawing.
Fig. 1 has been to use the sectional view of the elliptical loudspeaker of damper of the present invention.
Fig. 2 is the oblique view of the loud speaker of Fig. 1.
Fig. 3 is an explanatory view, has shown the situation when damper of the present invention is located in the loud speaker main frame.
Fig. 4 is an explanatory view, has shown the another kind of situation when locating in the damper main frame.
Fig. 5 is the plane graph of the damper of detailed displayed map 1.
Fig. 6 is the plane graph that shows the prior art damper.
Fig. 7 has shown the supporting location of moveable arm on the frame of the outer border of Fig. 5 damper.
Fig. 8 has shown the another kind of supporting location of moveable arm on the frame of the outer border of the damper of Fig. 5.
Fig. 1 and Fig. 2 have shown the elliptical loudspeaker that uses damper of the present invention.
As shown in the figure, the inside of magnetic loop shell 1 is provided with magnetic pole yoke support 2, is fixing annular magnet 3,4 in the both sides up and down of yoke support 2.On magnet 4, fixing annular slab 5.Be wound on the bobbin 6 is coil 7 (voice coil loudspeaker voice coil).This coil 7 is set between the pole piece 2a and annular slab 5 of magnetic pole yoke support 2 (magnetic slit).Here, coil 7 14 is connected to terminal 13 by going between.And, damper is that butterfly shape damper 9 possesses support coils 7 and becomes the interior border frame 9A of coil support portion and be installed in the speaker frame 8 and become the outer border frame 9B of speaker frame installation portion, and also comprises a plurality of moveable arm 9b that set up between the border frame 9A and outer border frame 9B in this.
Bobbin 6 is inserted among the interior border frame 9A of butterfly shape damper 9 and by elasticity and is supporting.The outer border frame 9B of butterfly shape damper 9 fuses by many moveable arm 9b and interior border 9A.Here, butterfly shape damper 9 is made of resin.Border frame 9A is processed to be suitable for the round-shaped of coil-winding pipe 6 insertions in it.Its outer border frame 9B then is made into the size roughly the same with elliptic vibration film (taper) 10.
As shown in Figure 3, on the long axis direction of the outer border frame 9B of butterfly shape damper 9, be formed with the recess 9a of location usefulness, and on the 8a of the support portion of loud speaker main frame 8, be formed with the projection 8b of location usefulness.By above-mentioned recess 9a is combined with above-mentioned projection 8b, this butterfly-like damper 9 just can be positioned in the loud speaker main frame 8 easily.So,, just can guarantee the balance support that obtains from butterfly-like damper 9 to elliptic vibration film (taper) 10.
Under the situation of common circular damper,, in loud speaker main frame 8, do not make special localization process above-described so do not need to resemble because be point-symmetric.Yet, under the occasion of the butterfly-like damper 9 of ellipse, because be the line symmetry, if resemble shown in Figure 4 under the situation that does not have above-mentioned groove 9a and above-mentioned projection 8b, it is difficult making butterfly-like damper 9 obtain correct positioning in the loud speaker main frame.Its result concerning elliptic vibration film (taper) 10, just is difficult to guarantee the balance support that obtains from butterfly-like damper 9.
As depicted in figs. 1 and 2, openend is that oval-shaped loudspeaker vibrating diaphragm (taper) 10 has oval rim portion 11, and this edge part 11 is fixed on the openend of loud speaker main frame 8 by ring washer 12.As shown in the figure, the other end of conical diaphragm 10 is fixed on the coil pony roll 6.
Below, will the effect of the butterfly-like damper 9 of above-mentioned ellipse be described.
Fig. 5 has shown the detailed situation of the butterfly-like damper 9 of above-mentioned ellipse.As shown in Figure 5, interior border frame 9A and outside between the frame 9B of border, set up 8 moveable arm 9b, 9c altogether.
Under occasion shown in Figure 5, interior border frame 9A and outside the moveable arm 9b, the 9c that set up between the frame 9B of border, an end of each root moveable arm is supported on the point one of outer border frame 9B～eight.Because, butterfly-like damper 9 its integral body are with the processed moulding of form of line symmetry, so form at center line a1 on two the lead-out wire a2 (by the connecting line of support point two, six) and a3 (by the connecting line of support point three, seven) of optimum angle θ (less than 45 degree) with its long axis direction, even moveable arm 9b is not carried out the arrangement of line symmetry, concerning elliptic vibration film (taper) 10, also can guarantee the balance support that obtains from from butterfly-like damper 9.Similarly, on not shown two lead-out wires (by the connecting line of support point one, five) in addition and (by the connecting line of support point four, eight), even moveable arm 9c is not carried out the arrangement of line symmetry, concerning elliptic vibration film (bullet) 10, also can guarantee balance support from butterfly-like damper 9.
As a comparison, as shown in Figure 6, under the situation of the common butterfly-like damper 20 of point-symmetric circle, interior border frame 21 and outside between the border frame 22, setting up 6 moveable arms 23 altogether by the support point on the border frame 22 outside (point one～six).At this moment, on the lead-out wire b1 between two lead-out wire b2 (by the connecting line of support point one, four) and the b3 (by the connecting line of support point three, six),, so just can not keep it and support balance if moveable arm 23 does not form the shape of line symmetry.
Below, with reference to Fig. 7, the supporting location of the support point on the outer border frame 9B of damper 9 (shown in Figure 5) (point one～eight) is illustrated.For the convenience on illustrating, Fig. 7 (a) has only shown the situation of a support point (point two).
Shown in Fig. 7 (a), make lead-out wire a2 with the center line a1 of long axis direction with angle theta,, when the θ angle is spent less than 45, just can obtain to be equivalent to the compliance that radius is the circular damper of a as shown in Fig. 7 (b).According to same reason,, so just can obtain the compliance of the bigger circular damper equal extent of radius a therewith if support point is in the position (support point one) of the support point of side within the above-mentioned support point (point two).
As a comparison, shown in Fig. 8 a, make lead-out wire a2 with angle theta, when the θ angle is spent greater than 45,, can only obtain to be equivalent to the compliance that radius is the circular damper of b as shown in Fig. 8 (b) with the center line a1 of long axis direction.
In addition, when adopting molding injection moulding manufactured butterfly shape damper 9, by making the end of moveable arm 9b and 9c (support point that is on the outer border frame 9B shown in Figure 5) thicker than other parts, just can make damper obtain the durability that further strengthens, so just can obtain required compliance with comparalive ease, thereby help to improve the bass characteristic f of oval-shaped (taper) speaker unit
0
As mentioned above, in damper of the present invention, between the speaker frame installation portion of the coil support portion that can insert for the voice coil loudspeaker voice coil pipe and the substantially elliptical that will combine with speaker frame, a plurality of moveable arm 9b, 9c have been set up according to specific angle, and an end of above-mentioned moveable arm, be supported on the speaker frame installation portion with angles when the major diameter direction of damper is seen less than 45 degree, therefore, can obtain the compliance of circular damper same degree, and this circular damper has the radius that the length with respect to the moveable arm of speaker frame installation portion matches.
In addition, on the speaker frame installation portion, be formed with the groove of being convenient in speaker frame, locate, therefore, even, also can carry out the location in speaker frame easily locating the occasion of the damper of the line symmetric figure of difficulty.
Moreover, the speaker frame installation portion, coil support portion and the moveable arm that constitute damper are made by resin, and are formed one by this three of injection-molded moulding, therefore, as the damper that forms by stamping-out, limit by the thickness to raw material, the thickness of damper becomes unique, and the situation that is difficult to obtain required compliance is compared, can suitably set thickness by mold pressing, therefore, can cause that the wall thickness of part is crooked, thereby can obtain enough compliances.Thereby just when the oscillating plate (cone) of supporting ellipse shape, can get
Claims (3)
1, a kind of damper that uses in loud speaker, it comprises the coil support portion that supports the voice coil loudspeaker voice coil pipe, be arranged at the outside of above-mentioned coil support portion and be installed on speaker frame installation portion in the speaker frame, and be erected at a plurality of moveable arms between above-mentioned coil support portion and the speaker frame installation portion, it is characterized in that: above-mentioned damper has major diameter direction and minor axis direction, and an end of above-mentioned moveable arm is supported on the above-mentioned speaker frame installation portion with the angles less than 45 degree when above-mentioned major diameter direction is seen.
2, damper as claimed in claim 1 is characterized in that: be formed with on above-mentioned speaker frame installation portion and be convenient to the groove of locating in above-mentioned speaker frame.
3, damper as claimed in claim 1 or 2 is characterized in that: above-mentioned coil support portion, speaker frame installation portion and moveable arm are made by resin, and this three is formed one by injection-molded moulding.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7011195A JP3434384B2 (en) | 1995-03-28 | 1995-03-28 | Speaker damper |
| JP070111/95 | 1995-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1136262A CN1136262A (en) | 1996-11-20 |
| CN1085484C true CN1085484C (en) | 2002-05-22 |
Family
ID=13422118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96103386A Expired - Fee Related CN1085484C (en) | 1995-03-28 | 1996-03-27 | Damper for use in loudspeaker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3434384B2 (en) |
| CN (1) | CN1085484C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005295452A (en) * | 2004-04-05 | 2005-10-20 | Pioneer Electronic Corp | Damper, diaphragm, and speaker apparatus |
| JP2006166023A (en) * | 2004-12-07 | 2006-06-22 | Pioneer Electronic Corp | Damper and speaker system |
| WO2009016743A1 (en) * | 2007-07-31 | 2009-02-05 | Pioneer Corporation | Speaker apparatus |
| CN101600136B (en) * | 2009-07-14 | 2012-08-08 | 无锡杰夫电声有限公司 | Loudspeaker positioning support chip |
| KR101150508B1 (en) * | 2011-07-18 | 2012-05-31 | 광원텍(주) | Speaker frame and speaker using the same |
| KR101410393B1 (en) * | 2012-09-25 | 2014-06-23 | 주식회사 에스제이앤에스 | Speaker frame and speaker having the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4239944A (en) * | 1978-01-20 | 1980-12-16 | Hitachi, Ltd. | Spider of loudspeaker |
| EP0369434A2 (en) * | 1988-11-15 | 1990-05-23 | Kabushiki Kaisha Kenwood | Speaker damper configuration |
-
1995
- 1995-03-28 JP JP7011195A patent/JP3434384B2/en not_active Expired - Fee Related
-
1996
- 1996-03-27 CN CN96103386A patent/CN1085484C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4239944A (en) * | 1978-01-20 | 1980-12-16 | Hitachi, Ltd. | Spider of loudspeaker |
| EP0369434A2 (en) * | 1988-11-15 | 1990-05-23 | Kabushiki Kaisha Kenwood | Speaker damper configuration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1136262A (en) | 1996-11-20 |
| JP3434384B2 (en) | 2003-08-04 |
| JPH08275291A (en) | 1996-10-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NIPPON PIONEER CORP. Free format text: FORMER NAME: SENBOU ELECTRONIC CORP. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Tokyo, Japan Patentee after: Nippon Pioneer Co., Ltd. Patentee after: Pioneer Tohoku Corp Address before: Tokyo, Japan Patentee before: Pioneer Electronic Corp. Patentee before: Northeast Pioneer Electronics Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020522 Termination date: 20130327 |