CN1649445A - Dome shape vibration film and loudspeaker device with dome shape vibration film - Google Patents
Dome shape vibration film and loudspeaker device with dome shape vibration film Download PDFInfo
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- CN1649445A CN1649445A CN 200410085023 CN200410085023A CN1649445A CN 1649445 A CN1649445 A CN 1649445A CN 200410085023 CN200410085023 CN 200410085023 CN 200410085023 A CN200410085023 A CN 200410085023A CN 1649445 A CN1649445 A CN 1649445A
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- vibration film
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- dome
- shape vibration
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Abstract
To solve the insufficiency in rigidness of an intermediate portion in a long diametric direction of a dome type diaphragm. In the dome type diaphragm 11 in which the external circumferential shape in a plan view is oval or elliptic, the cross sectional shape along its long diametric direction and short diametric direction is formed into a bent shape.
Description
Technical field
The present invention relates to dome shape vibration film and speaker unit with dome shape vibration film.
Background technology
Use the peripheral shape of overlooking to compare with the general speaker unit that uses Round Membranes and not only have the advantage of in narrow space, installing easily, and have the advantage that can increase vibrating membrane area and the low range regeneration of raising tonequality by vibrating membrane in the expansion of major diameter direction as the speaker unit of Long Circle or oval-shaped vibrating membrane.
In addition, overlook to Long Circle or oval-shaped vibrating membrane weakens in directivity on the minor axis direction, directivity strengthens on the major diameter direction, therefore, for only exceedingly useful under the situation that requires highly directive on the specific direction.
For only on specific direction required direction situation, for example can enumerate such as at the cinema or the regeneration of the sound equipment in the compartment.
Which require no matter to be sitting on the seat at the cinema to obtain identical acoustics, so just needing in the horizontal direction, (left and right directions) weakens directivity, and reduce from ceiling and floor reflection sound, for this reason, require to strengthen in vertical direction directivity.
In addition, the occasion in car, the position that speaker unit is set is limited, and the distance between loud speaker and the rider can not be big, and therefore, seat is big towards variable effect to speaker unit.Therefore, if use the speaker unit of high directivity in the horizontal direction, be sitting in and just can not get satisfied acoustics on the seat.
In order to realize only on such specific direction, having the regeneration of highly directive, generally adopt the horn loudspeaker system at the cinema, but the horn loudspeaker system generally all is large-scale, and the price height, be unsuitable for being provided with the limited vehicle mounted in space.
Here, the various schemes of system have been proposed to form by long round loudspeakers littler than horn loudspeaker system and that price is low as onboard system.
On the other hand, make the dynamic speaker device of vibrating membrane vibration sounding by being configured in voice coil loudspeaker voice coil in the magnetic circuit, can be divided into the use center substantially to the cone type loudspeaker of the vibrating membrane of the recessed alms bowl shape (taper shape) of deep inside with use from the domeshape loud speaker of edge part to the dome shape vibration film of central uplift.
Cone type loudspeaker is sealed by the solid angle in the circular cone because of the high pitch composition that the root from conical diaphragm sends, so have the sharp-pointed characteristic of directivity.
Because the sound that the whole vibration planes of domeshape loud speaker all expose, send from vibration plane all is transmitted into the external world, a little less than the directivity, so just can sound with wide-angle.
Therefore, draw the advantage of domeshape loud speaker, develop the loud speaker that improves directivity and alt territory reproducing characteristic more.Fig. 1 represents to be used for the example of the existing oval dome shape vibration film of above-mentioned speaker unit.
As shown in Figure 1, this dome shape vibration film 1 is made of edge part 3 and dome portions 5, has the flange portion 3a that is fixed on the speaker frame in the periphery of edge part 3, engages the peripheral part 5a of dome portions 5 on the inner rim of edge part 3.
In addition, it is the Long Circle shown in Fig. 1 (a) that the peripheral part 5a of dome portions 5 overlooks, the section of its minor axis direction such as Fig. 1 (b) are depicted as semicircular arc, and the section of major diameter direction both ends shown in Fig. 1 (c) are circular arc and pars intermedia 5b is smooth (straight line) shape (for example with reference to a patent document 1)
[patent documentation 1] spy opens flat 05-1918926 communique.
Yet recently household audio and video system and car audio system are popularized, and tight demand is not only small-sized, have suitable directivity but also can bear the high loud speaker of rigidity of big power output.
But the both ends of the dome portions 5 of above-mentioned dome shape vibration film 1 form respectively the flexure plane in the three-dimensional of minor axis direction and the bending of major diameter direction, and the pars intermedia of dome portions 5 only forms the flexure plane at the bidimensional of minor axis direction bending.
Its result, the pars intermedia of the major diameter direction of dome portions 5 and both ends specific rigidity reduce, produce because the rigidity deficiency of the pars intermedia of major diameter direction causes the vibration distortion tonequality of high range bad, perhaps be difficult to improve the powerful problem such as high input power performance of bearing of output.
Summary of the invention
It is that the pars intermedia rigidity deficiency by the major diameter direction that exists in above-mentioned prior art causes high range vibration distortion tonequality bad that the problem that the present invention will solve can be enumerated an example, perhaps is difficult to improve the powerful problem of bearing high input power performance of output.
The dome shape vibration film of first aspect present invention, its peripheral shape of overlooking is Long Circle or ellipse, it is characterized in that along the section shape of major diameter direction and minor axis direction be crooked shape.
The dome shape vibration film of second aspect present invention, its peripheral shape of overlooking is a Long Circle, it is characterized in that along the section shape of major diameter direction and minor axis direction be crooked shape.
Speaker unit of the present invention is characterized in that having above-mentioned first or the described dome shape vibration film of second aspect.
Description of drawings
Fig. 1 represents existing oval dome shape vibration film, and Fig. 1 (a) is that vertical view, Fig. 1 (b) are that profile, Fig. 1 (c) of minor axis direction is the profile of major diameter direction;
Fig. 2 represents to relate to the oval dome shape vibration film of embodiments of the present invention, and Fig. 2 (a) is that vertical view, Fig. 2 (b) are that profile, Fig. 2 (c) of minor axis direction is the profile of major diameter direction;
Fig. 3 is the profile of a routine major diameter direction that the speaker unit of the oval dome shape vibration film that relates to embodiments of the present invention has been used in expression.
Symbol description
11 dome shape vibration films; 13 edge parts; The 13a flange portion;
The 13b bend; 15 dome portions; The 15a peripheral edge portion.
Embodiment
Below, describe the execution mode that relates to dome shape vibration film of the present invention in detail with reference to accompanying drawing.
Fig. 2 represents to relate to the dome shape vibration film of embodiments of the present invention.
The dome shape vibration film 11 that relates to present embodiment is the oval dome shape vibration films that comprise straight line portion in the major diameter direction, it is made of edge part 13 and dome portions 15, be fixed on the flange portion 13a that does not do on the illustrated speaker frame having on the periphery of edge part 13, on the inner periphery of this edge part 13, engage the peripheral edge portion 15a of dome portions 15.
In addition, this dome shape vibration film 11 also can be the ellipse that only constitutes periphery with curve.
Dome portions 15 is set the maximum bump height H2 height of its maximum bump height H1 than the bend 13b of edge part 13 from overlooking to oblong peripheral part 15a swells gradually.
And, the dome portions 15 of present embodiment, for minor axis direction and major diameter direction at any position all obtain curved shape, any section shape in major diameter direction and minor axis direction all increases to the central elevation height gradually from periphery, reaches the shape of the smooth arc of the maximum height that swells at the center.
In present embodiment, shown in Fig. 2 (b), the arc surface of minor axis direction is 1/2nd circular arcs roughly.Shown in Fig. 2 (c), at the arc surface of major diameter direction 2 P2, P3 3 the circular arc at the both ends of the summit P1 of the circular arc by the minor axis direction and major diameter direction.
This dome shape vibration film 11 is also the same with both ends at the pars intermedia of the major diameter direction of dome portions 15, forms respectively the curved surface that has the three-dimensional of curved shape in minor axis direction and major diameter direction all directions.That is, there is not smooth (straight line) part as the pars intermedia 5b of above-mentioned conventional example shown in Figure 1.Therefore, even also can guarantee high rigidity equally with both ends at the pars intermedia of the major diameter direction of dome portions 15.
Below, reference describes an example of the speaker unit that uses above-mentioned dome shape vibration film 11 in detail as the profile of the major diameter direction of Fig. 3.
As shown in Figure 3, long round loudspeakers 20 has the peripheral shape of overlooking and becomes oblong vibrating membrane 11; Cross section shape becomes Long Circle and is installed in sound ring frame 21 on the vibrating membrane 11; Be wound on the voice coil loudspeaker voice coil 24 of this sound ring frame 21; What connect this voice coil loudspeaker voice coil 24 does not make illustrated lead.
And joint edge portion 13 on the outer peripheral portion of dome shape vibration film 11, and the flange portion of the periphery of this edge part 13 is fixed in the edge bearing portion 23 of speaker frame 27.
In the magnetic gap G of sound ring frame 21 insertions by magnet 26, center pole 22, york piece 25, dull and stereotyped 28 magnetic circuits of forming.
By use the long round loudspeakers 21 of above-mentioned dome shape vibration film 11 has been installed, can have been adapted in household audio and video system and the car audio system for directivity, the high tone quality regeneration of the wide-angle of horizontal direction and export the powerful high input power performance demands of bearing.
In addition, the dome shape vibration film 11 of present embodiment, because each flexure plane of the minor axis direction of dome portions 15 and major diameter direction is the arc surface of simple shape, so simple shape of the finishing die of vibrating membrane, finishing die is easy to manufacture and price is low, the manufacturing cost that can realize reducing oval dome shape vibration film and use the speaker unit of this vibrating membrane.
In addition, at above-mentioned execution mode, shown in Fig. 2 (a), the peripheral shape that oval dome shape vibration film 11 is overlooked is a Long Circle, yet the peripheral shape of overlooking also can ovalisation.
In addition, the flexure plane of the major diameter direction of dome portions 15 and each section of minor axis direction is not limited to the simple arc surface shown in the above-mentioned execution mode, for example also can make the compound curved surface that connects the different a plurality of arc surfaces of curvature sleekly.
In addition, the rigidity that has improved the pars intermedia of major diameter direction owing to the oval dome shape vibration film that relates to present embodiment prevents because the high range distortion that the rigidity deficiency causes, so can realize the high range regeneration of high-quality, can be applicable to the speaker unit in alt territory.Owing to the area that has increased vibrating membrane with the Long Circle vibrating membrane, therefore be used in low range regeneration and also can obtain good frequency characteristic.Thereby can use applied range as full-range speaker.
Promptly, used the purposes of oblong speaker unit of the dome shape vibration film of embodiments of the present invention to be not limited to home theater with speaker unit and vehicle-mounted loudspeaker device, for example, bring into play the non-directional of the space-efficient advantage of long round loudspeakers and dome shape vibration film effectively, also can be installed in the flat-faced screen and notebook computer, mobile phone etc. of LCD TV etc.
In sum, the dome shape vibration film 11 of present embodiment is that to overlook peripheral shape be Long Circle or oval-shaped dome portions vibrating membrane, section shape along its major diameter direction and minor axis direction is crooked shape, thereby in the speaker unit 21 that has used this dome shape vibration film 11, can avoid since the defective mode that the rigidity deficiency of the pars intermedia of the major diameter direction of vault causes (for example, high range distortion causes the bad and restriction of tonequality to bear input power performance etc.), only can realize improving good directivity at the wide-angle of specific direction, high tone quality is regenerated and is born high input power performance etc.
Claims (5)
1. dome shape vibration film, its peripheral shape of overlooking is Long Circle or ellipse, it is characterized in that, be crooked shape along the section shape of its major diameter direction and minor axis direction.
2. dome shape vibration film, its peripheral shape of overlooking is a Long Circle, it is characterized in that, be crooked shape along the section shape of its major diameter direction and minor axis direction.
3. dome shape vibration film as claimed in claim 1 or 2 is characterized in that, above-mentioned section shape is to bend to bump height to increase gradually to central part from periphery, and in form the shape of maximum bump height in the heart.
4. dome shape vibration film as claimed in claim 3 is characterized in that, above-mentioned maximum bump height is than disposing the maximum bump height height of the edge part of perimembranous outside.
5. a speaker unit is characterized in that, has the dome shape vibration film described in aforesaid right requirement 1 or 2.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP020996/2004 | 2004-01-29 | ||
| JP2004020996A JP2005217712A (en) | 2004-01-29 | 2004-01-29 | Dome type diaphragm and speaker device provided therewith |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1649445A true CN1649445A (en) | 2005-08-03 |
Family
ID=34879077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410085023 Pending CN1649445A (en) | 2004-01-29 | 2004-10-13 | Dome shape vibration film and loudspeaker device with dome shape vibration film |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005217712A (en) |
| CN (1) | CN1649445A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101076206B (en) * | 2007-06-16 | 2011-12-07 | 郑润远 | Capacity sound-transmitter vibration diaphragm and its capacity sound transmitter |
| CN103200499A (en) * | 2013-03-29 | 2013-07-10 | 天津市隆耀成机电设备有限公司 | Conical paper cone without center hole and loudspeaker with conical paper cone |
| CN110177319A (en) * | 2017-02-17 | 2019-08-27 | 迪芬尼香港有限公司 | Loudspeaker and its acoustic diffusers |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4617518B2 (en) * | 2005-12-28 | 2011-01-26 | オンキヨー株式会社 | Speaker diaphragm and speaker using the same |
-
2004
- 2004-01-29 JP JP2004020996A patent/JP2005217712A/en active Pending
- 2004-10-13 CN CN 200410085023 patent/CN1649445A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101076206B (en) * | 2007-06-16 | 2011-12-07 | 郑润远 | Capacity sound-transmitter vibration diaphragm and its capacity sound transmitter |
| CN103200499A (en) * | 2013-03-29 | 2013-07-10 | 天津市隆耀成机电设备有限公司 | Conical paper cone without center hole and loudspeaker with conical paper cone |
| CN110177319A (en) * | 2017-02-17 | 2019-08-27 | 迪芬尼香港有限公司 | Loudspeaker and its acoustic diffusers |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005217712A (en) | 2005-08-11 |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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