CN101257727A - Electroacoustic transducer - Google Patents
Electroacoustic transducer Download PDFInfo
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- CN101257727A CN101257727A CNA200810009341XA CN200810009341A CN101257727A CN 101257727 A CN101257727 A CN 101257727A CN A200810009341X A CNA200810009341X A CN A200810009341XA CN 200810009341 A CN200810009341 A CN 200810009341A CN 101257727 A CN101257727 A CN 101257727A
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Abstract
The invention provides an electroacoustic transformator, of which the contact part on the free end part of the terminal will not be in poor contact with the contact part of peripherial equipment. The electroacoustic transformator comprises a frame (11), a base (12) fixed inside of the frame (11), a permanent magnet (16) fixed on the inside surface of the base (12), a vibration plate supported by the frame (11), a sound coil (20) fixed on the vibration plate between the base (12) and the permanent magnet (16) and a terminal (24) for electrical connection of the sound coil (20) to the peripherial equipment. The terminal (24) is made of plate spring material, wherein the fixing terminal part (24a) is fixed on the frame (11), and the free end part (24b) contacts with the peripherial equipment. The frame is provided with a guide slot (28) for guiding the movement of the free end part (24b) of the terminal (24).
Description
Technical field
The present invention relates to the electroacoustic transducing devices such as loud speaker that use in the communication equipment such as mobile phone for example.
Background technology
At present, as this electroacoustic transducing device, for example structure shown in the patent documentation 1 has been proposed.
In this existing structure, at framework internal fixation pedestal, at the inner surface fixed permanent magnet of this pedestal.At framework upper support oscillating plate, fixing voice coil loudspeaker voice coil on this oscillating plate is so that it is corresponding with pedestal and permanent magnet.At the lateral surface of aforementioned framework, a pair of terminal that is made of the flat spring material is fixed at their anchor portion place, and these terminals are used for the external equipments such as circuit substrate of voice coil loudspeaker voice coil and mobile phone main body are electrically connected.Each terminal free ends portion is flexible, and protrudes to the outside of framework, and the contact site with said external equipment is set on this free end.And under electroacoustic transducing device was assembled into state on the external equipment, along with the flexural deformation of each terminal free ends portion, the contact site on this free end contacted with the contact site of external equipment.
Patent documentation 1: the spy opens the 2002-354582 communique
Summary of the invention
But in this patent documentation 1 described existing electroacoustic transducing device, the flexible free end of terminal protrudes to the outside of framework, not only in the pretension direction of flat spring material, also is in the state that can easily move on Width.Therefore, electroacoustic transducing device is assembled on the external equipment, the thermal deformation that the contact site in each terminal free ends portion may cause because of vibration or outside air temperature variation etc., to from the contact site of circuit substrate etc. away from direction move.And, the flat spring material to away from direction when moving, can weaken to the crimp force of the pretension direction of flat spring material.So the mobility of flat spring material improves, and may depart to the left and right.Certainly, can come in contact badly in this case, according to circumstances, the loose contact state also may continue.
The problem points that the present invention is conceived to exist in the prior art proposes.Its purpose is to provide a kind of electroacoustic transducing device, and it can keep the contact site in the terminal free ends portion and the contact site state of contact of external equipment side, effectively prevents loose contact.
To achieve these goals, electroacoustic transducing device of the present invention has: framework; Oscillating plate, it is supported by aforementioned framework; Voice coil loudspeaker voice coil, it is fixed on the aforementioned oscillating plate; Magnetic circuit unit, it comprises voice coil loudspeaker voice coil, forms magnetic circuit; And terminal, it is used for aforementioned voice coil loudspeaker voice coil and external equipment are electrically connected, it is characterized in that, aforementioned terminal is made of the flat spring material, it is fixed on the aforementioned framework at the anchor portion place, and the contact site that contacts with said external equipment is set on free end simultaneously, and this free end can move on the direction that connects or separate with respect to said external equipment, on aforementioned framework guide part is set, it guides aforementioned terminal free ends portion moving on aforementioned connection or detaching direction.
Therefore, be assembled on the external equipment at electroacoustic transducing device, and the contact site in the terminal free ends portion because of vibration or thermal deformation to from the contact site of external equipment side away from direction situation about moving under, this free end also can be directed to contact position by the effect of guide part.Thus, can prevent to produce loose contact.
In addition, in aforementioned structure, can form narrow width part, constitute aforementioned guide part by the gathering sill of this narrow width part of guiding in aforementioned terminal free ends portion.
Under situation about constituting like this,, can make termination contact portion successfully move to the electrical connecting position of regulation by engaging of narrow width part and gathering sill.
And, in aforementioned structure, aforementioned gathering sill is made of restriction slot part and the guiding slot part that forms taper, this restriction slot part limit aforementioned free end with aforementioned be connected or direction that detaching direction intersects on move, this guiding groove is used for free end to the guiding of aforementioned limiting groove portion.
Under situation about constituting like this, can realize more reliably being electrically connected with the terminal free end to spacing location guide.
And in aforementioned structure, aforementioned framework has the annulus that surrounds aforementioned voice coil loudspeaker voice coil, forms lower curtate and high portion in the side of this annulus, and the anchor portion of aforementioned terminal is fixed on the aforementioned lower curtate, forms aforementioned gathering sill simultaneously in aforementioned high portion.Here, be that upper surface is a benchmark with a side of the framework of the opposition side of aforementioned lower curtate and high portion, from this upper surface, lower part is aforementioned lower curtate, higher part is high portion.
Under situation about constituting like this, by side high portion is set in framework, can be so that be used to the magnetic gap broad of allowing that voice coil loudspeaker voice coil moves, simultaneously can between the substrate of the external equipment of the circuit substrate of framework and mobile phone main body, enough back side electric capacity be set, therefore, can guarantee the good sound characteristic.And,, can suppress the integral thickness increase of electroacoustic transducing device by with the lower curtate of terminal fixed configurations in the framework side.And,, protrude to the framework outside so can suppress terminal free ends portion because be provided for the gathering sill of the free end of guide terminal in the high portion of framework.And, because the gathering sill of terminal is set in the high portion of framework, so can fully guarantee the degree of depth of the gathering sill on the moving direction of terminal free ends portion, increase the shift motion of free end, realize being electrically connected between more reliable this free end and external equipment.
The effect of invention
As mentioned above, according to the present invention, has the effect that can suitably prevent the loose contact of terminal and external equipment.
Description of drawings
Fig. 1 is the electroacoustic transducing device of an execution mode of partly cut-away and the vertical view that illustrates.
Fig. 2 is the upward view of the electroacoustic transducing device of Fig. 1.
Fig. 3 is the profile of the 3-3 line of Fig. 1.
Fig. 4 is the profile of the 4-4 line of Fig. 2.
Fig. 5 is the local amplification profile of the 5-5 line of Fig. 4.
Fig. 6 be the expression guide terminal the structure that moves of free end want portion's oblique view.
Embodiment
Below, an embodiment of the invention are described with reference to the accompanying drawings.Electroacoustic transducing device in the present embodiment constitutes loud speaker.
As shown in Figures 1 to 3, in the electroacoustic transducing device of present embodiment, framework 11 by the synthetic resin of insulating properties with four frame shapes roughly, promptly four side ring shapes form.The chimeric pedestal 12 that constitutes by the ferrous metal plate in the inside of framework 11, fixing by binding agent 13.This pedestal 12 is made of long tetragonal flat part 14 and kink 15, and this flat part 14 is made of sheet metal, and this kink 15 is at the four springs folding of this flat part 14 and form.And these kinks 15 extend configuration along the medial surface of framework 11.At the inner surface 14a fixed permanent magnet 16 of the flat part 14 of pedestal 12, the fixing yoke 17 on the surface of this permanent magnet 16.
As Fig. 1 and shown in Figure 3, the outside of the yoke 17 on aforementioned permanent magnet 16, at the edge of opening support oscillating plate 18 of framework 11, and these oscillating plate 18 tensioning settings.At the fixing voice coil loudspeaker voice coil 20 of the inner surface of oscillating plate 18, be located between the outer peripheral face of the kink 15 of pedestal 12 and permanent magnet 16.Be fixed for covering the outer cover 21 in the outside of oscillating plate 18 at the lateral surface of framework 11, form through hole 21a at the central portion of this outer cover 21.Therefore, present embodiment is embodied as the loud speaker of internal magnetic type.
As shown in Figures 3 and 4, the side of position opposite side is set, promptly surrounds the side (lower surface of Fig. 3 and the lower surface of Fig. 4) of annulus of the flat part 14 of pedestal 12 in the tensioning with oscillating plate 18 of aforementioned framework 11, form lower curtate 11a that is positioned at outer circumferential side and the high 11b of portion that is positioned at all sides.This lower curtate 11a and the high 11b of portion are that upper surface (upside of Fig. 3 and the downside of Fig. 4) is that benchmark is set with their side of framework 11 of opposition side, and from this upper surface, lower part is aforementioned lower curtate 11a, and higher part is the high 11b of portion.Si Jiaochu at the lower curtate 11a of framework 11 buries underground and fixes each a pair of joint 22,23, on these joints 22,23, connects the lead-in wire 20a that extends out from voice coil loudspeaker voice coil 20.
Fix a pair of flat shape that is made of the flat spring material and be the terminal 24 of L word shape roughly on joint 22,23, this fixedly is to fix by solder 25 at their anchor portion 24a place.In addition, fixing of each terminal 24 also can replace solder 25 and other methods such as employing laser welding or thermo-compressed.Be installed at electroacoustic transducing device under the state on the external equipment of circuit substrate etc. of not shown mobile phone main body, on the free end 24b on these terminals 24, the corresponding contact site 26 that formation can connect or separate etc. with external equipment, utilize the elastic force of free end 24b, the contact site crimping of contact site 26 and external equipment.Utilize this crimping, can guarantee being electrically connected between electroacoustic transducing device and external equipment.
And, in this electroacoustic transducing device, constitute magnetic circuit by aforementioned pedestal 12, permanent magnet 16, yoke 17 and voice coil loudspeaker voice coil 20, from two terminals 24 when voice coil loudspeaker voice coil 20 flows through drive current, oscillating plate 18 utilizes the magnetic force change corresponding with this drive current and vibrates, and sounds.
Below, at length describe for the structure that moves of the free end 24b that is used to guide aforementioned each terminal 24.
As Fig. 2 and Fig. 4～shown in Figure 6, extend to form narrow width part 27 at the free end 24b place of aforementioned each terminal 24.At the side wall surface of the high 11b of portion of framework 11, form gathering sill 28 as guide part, it engages with the narrow width part 27 of terminal 24, is used for free end 24b mobile of guide terminal 24.As shown in Figure 5, this gathering sill 28 has: restriction slot part 28a, and it has the big a certain amount of groove width of width than narrow width part 27; And guiding slot part 28b, it forms taper, along with its groove width increases gradually away from aforementioned limitations slot part 28a.
And, shown in the solid line among Fig. 4 and Fig. 5, be assembled on the external equipments such as mobile phone main body at electroacoustic transducing device before, the free end 24b of each terminal 24 is under the state freely, utilize the elasticity of free end 24b, make narrow width part 27 be engaged to the bottom surface of aforementioned limitations slot part 28a.By this engaging, this free end 24b with the contact site of external equipment be connected or detaching direction on, be positioned in assigned position.
Then, electroacoustic transducing device is installed on the external equipment, under external equipment state of contact such as the contact site 26 of the free end 24b of each terminal 24 and circuit substrate, shown in the double dot dash line of the 27A among Fig. 5, the narrow width part 27 of each terminal 24 is arranged in the restriction slot part 28a of gathering sill 28.Therefore, the free end 24b of each terminal 24 is to its Width, promptly be connected or the mobile of direction that detaching direction intersects is limited with aforementioned, and contact site on each terminal 24 26 is stable to remain contact site state of contact with the circuit substrate of external equipment side.
Relative therewith, as shown in the double dot dash line of the lower side of the double dot dash line among Fig. 4 and Fig. 5, free end 24b at terminal 24 moves to the contact site direction away from external equipment, under the situation that the Width top offset moves, the narrow width part 27 of terminal 24 engages with the guiding slot part 28b of the formation taper of gathering sill 28 simultaneously.By this engaging, when utilizing the elastic force of self, the free end 24b of terminal 24 restores when mobile, narrow width part 27 is directed to restriction slot part 28a side along guiding slot part 28b, and the free end on the terminal 24 restores the contact position that moves to the regulation relative with the contact site of external equipment side.
Therefore, the electroacoustic transducing device of present embodiment is brought into play following effect.
(1) forms narrow width part 27 at the free end 24b place of terminal 24, on framework 11, be formed for simultaneously engage and guide the mobile gathering sill 28 of free end 24b with the narrow width part 27 of terminal 24.Thus, be assembled on the external equipment at electroacoustic transducing device, under the contact site state of contact of the free end 24b of terminal 24 and the circuit substrate of external equipment side etc., even because because of vibration or the thermal deformation that causes of exterior temperature change etc., the free end 24b of terminal 24 is under the situation that the direction away from the contact site of the external equipment side of mobile phone main body etc. moves, also can be by the engaging of narrow width part 27 and gathering sill 28, the free end 24b recovery of terminal 24 moves to initial contact position.Therefore, restore when mobile, can suppress free end 24b, prevent the possibility of loose contact to its Width moving displacement at the free end 24b of terminal 24.And, because utilizing gathering sill 28 the free end 24b of terminal 24 to the left and right moving of direction also be limited, be offset to the left and right so prevent contact site 26.Thus, can prevent to produce loose contact between the contact site of contact site 26 and external equipment side.
(2) form lower curtate 11a and the high 11b of portion in the side of framework 11, the anchor portion 24b of terminal 24 is fixed on the lower curtate 11a place of framework 11, utilizes the aforementioned high 11b of portion simultaneously, forms gathering sill 28 on this high 11b of portion.Therefore, even terminal 24 is disposed at the side (lower surface of Fig. 4) of framework 11, also can not increase the thickness of framework 11, can utilize the high 11b of portion of framework 11 to surround pedestal 12, between the inner surface 14a and voice coil loudspeaker voice coil 20 of the flat part 14 of this pedestal 12, be provided for the sufficient gap that voice coil loudspeaker voice coil 20 is moved.In addition, can be at the opposition side (downside of Fig. 3) of oscillating plate 18, be provided with and be arranged at the gap between the circuit substrate of the mobile phone main body on the side of framework 11 fully.Therefore, can suitably guarantee the back side capacity of the rear side of oscillating plate 18.Therefore, can realize that profile is thinner, and have the electroacoustic transducing device of the sound property of high-quality.
(3) because the gathering sill 28 of terminal 24 is set at the high portion 11b place of framework 11, so can fully guarantee the degree of depth of the gathering sill 28 on the moving direction (above-below direction) of free end 24b of terminal 24.Therefore, can increase the shift motion of free end 24b, realize being electrically connected more reliably between this free end 24b and external equipment.
(4) because the narrow width part 27 of the free end 24b of terminal 24 is housed in the gathering sill 28, so can prevent the damage of this narrow width part 27.
(variation)
In addition, present embodiment can also change in the following manner and specialize.
In aforementioned embodiments, terminal 24 forms for the mode of L word shape roughly with flat shape, but also can make this terminal 24 form other shape that flat shape for example is roughly I word shape etc.
Also can constitute terminal 24 by the wire spring material.
Also the present invention can be specialized in microphone.
Also can in the electroacoustic transducing device of the loud speaker of external magnetic type etc., the present invention be specialized.
Claims (4)
1. electroacoustic transducing device has:
Framework;
Oscillating plate, it is supported by aforementioned framework;
Voice coil loudspeaker voice coil, it is fixed on the aforementioned oscillating plate;
Magnetic circuit unit, it comprises voice coil loudspeaker voice coil, forms magnetic circuit; And
Terminal, it is used for aforementioned voice coil loudspeaker voice coil and external equipment are electrically connected,
It is characterized in that,
Aforementioned terminal is made of the flat spring material, and it is fixed on the aforementioned framework at the anchor portion place, and the contact site that contacts with said external equipment is set on free end simultaneously, and this free end can move on the direction that connects or separate with respect to said external equipment,
On aforementioned framework guide part is set, it guides aforementioned terminal free ends portion moving on aforementioned connection or detaching direction.
2. electroacoustic transducing device as claimed in claim 1 is characterized in that,
Form narrow width part in aforementioned terminal free ends portion, constitute aforementioned guide part by the gathering sill of this narrow width part of guiding.
3. electroacoustic transducing device as claimed in claim 2 is characterized in that,
Aforementioned gathering sill is made of restriction slot part and the guiding slot part that forms taper, this restriction slot part limit aforementioned free end with aforementioned be connected or direction that detaching direction intersects on mobile, this guiding groove is used for free end is guided to aforementioned limiting groove portion.
4. as claim 2 or 3 described electroacoustic transducing devices, it is characterized in that,
Aforementioned framework has the annulus that surrounds aforementioned voice coil loudspeaker voice coil, forms lower curtate and high portion in the side of this annulus, and the anchor portion of aforementioned terminal is fixed on the aforementioned lower curtate, forms aforementioned gathering sill simultaneously in aforementioned high portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007049174A JP2008219065A (en) | 2007-02-28 | 2007-02-28 | Electroacoustic transducer |
| JP2007049174 | 2007-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101257727A true CN101257727A (en) | 2008-09-03 |
Family
ID=39838649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810009341XA Pending CN101257727A (en) | 2007-02-28 | 2008-02-25 | Electroacoustic transducer |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008219065A (en) |
| CN (1) | CN101257727A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316399A (en) * | 2010-03-25 | 2012-01-11 | 宝星电子株式会社 | Thin speaker |
| CN101674515B (en) * | 2009-09-15 | 2013-01-02 | 歌尔声学股份有限公司 | Miniature moving ring type electroacoustic transducer and assembling method thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841750B (en) * | 2010-05-21 | 2014-01-22 | 歌尔声学股份有限公司 | Wiring device for miniature acoustical generators and assembling method |
| KR101142253B1 (en) * | 2010-08-18 | 2012-05-07 | 주식회사 이엠텍 | A sound converting apparatus |
| JP2013143605A (en) * | 2012-01-10 | 2013-07-22 | Panasonic Corp | Speaker unit, speaker system, mobile phone using the same, and electronic apparatus |
| TWM453317U (en) * | 2012-12-13 | 2013-05-11 | Chi Mei Comm Systems Inc | Speaker |
| CN103873994A (en) * | 2014-01-01 | 2014-06-18 | 陆庆兵 | Electroacoustic transducer |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3125220B1 (en) * | 1999-09-30 | 2001-01-15 | 京セラエルコ株式会社 | Connectors for electronic components |
| JP3852913B2 (en) * | 2001-10-31 | 2006-12-06 | 松下電器産業株式会社 | Condenser microphone and mobile phone device using the same |
| JP3970077B2 (en) * | 2002-04-02 | 2007-09-05 | シチズン電子株式会社 | Electroacoustic transducer |
| JP2004048223A (en) * | 2002-07-10 | 2004-02-12 | Orient Sound Kk | Small-sized electric transducer and holder thereof |
| JP4196114B2 (en) * | 2004-07-01 | 2008-12-17 | パナソニック株式会社 | Electroacoustic transducer and electronic device using the same |
-
2007
- 2007-02-28 JP JP2007049174A patent/JP2008219065A/en active Pending
-
2008
- 2008-02-25 CN CNA200810009341XA patent/CN101257727A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101674515B (en) * | 2009-09-15 | 2013-01-02 | 歌尔声学股份有限公司 | Miniature moving ring type electroacoustic transducer and assembling method thereof |
| CN102316399A (en) * | 2010-03-25 | 2012-01-11 | 宝星电子株式会社 | Thin speaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008219065A (en) | 2008-09-18 |
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Application publication date: 20080903 |