CN101959104A - Speaker unit - Google Patents
Speaker unit Download PDFInfo
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- CN101959104A CN101959104A CN2010101787410A CN201010178741A CN101959104A CN 101959104 A CN101959104 A CN 101959104A CN 2010101787410 A CN2010101787410 A CN 2010101787410A CN 201010178741 A CN201010178741 A CN 201010178741A CN 101959104 A CN101959104 A CN 101959104A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention provides a high efficient speaker unit. The speaker unit is provided with a cone, a magnetic loop and a voice coil. The periphery of the cone is elongated. A hole is formed in the middle part. A peripheral part is installed on a frame. The magnetic loop is arranged on the frame. The voice coil consists of a tubular winding tube and a coil wound on the peripheral surface of the winding tube. The coil is arranged in a magnetic field generated by the magnetic loop and connected with an inner circumferential part of the cone. A yoke part (13) of the magnetic loop (11) is provided with a first vertical wall part (19) and a second vertical wall part (21). The hole (1a) of the cone (1) and the voice coil (35) are connected through a coupler (41).
Description
Technical field
The present invention relates to a kind of loudspeaker unit, this loudspeaker unit has framework, cone (コ one Application Paper), magnetic loop and voice coil loudspeaker voice coil; The peripheral shape of above-mentioned cone is an elongated shape, forms porosely at central portion, and peripheral part is installed in said frame; Above-mentioned magnetic loop is arranged on said frame; Above-mentioned voice coil loudspeaker voice coil is made of with the coil that is wound on the outer peripheral face of this bobbin the bobbin of tubular, the above-mentioned coil of configuration in the magnetic field that produces by above-mentioned magnetic loop, and above-mentioned voice coil loudspeaker voice coil is connected with the interior perimembranous side of above-mentioned cone.
Background technology
In recent years, at liquid crystal, plasm TV, framework need be changed in a narrow margin.The peripheral shape that is arranged on the loud speaker use cone in the TV thus is longilineal loudspeaker unit.
In addition, also need framework slimming, miniaturization.Thus, the loudspeaker unit that needs slim elongated shape.
An example having realized the loudspeaker unit of slim elongated shape is, is style of opening (for example, with reference to patent documentation 1) with the magnetic gap of magnetic loop, with the bottom of the connecting portion between the bobbin of interior week of cone and voice coil loudspeaker voice coil as bobbin.
[patent documentation 1] Japanese kokai publication hei 6-284492 communique (Fig. 1-Fig. 6)
Summary of the invention
But,, make the actuating force of cone vibration little so exist, inefficient problem because the magnetic field that produces in the magnetic loop of style of opening is little.
The present invention is the invention of making in view of the above problems, and purpose is for providing a kind of efficient high loudspeaker unit.
The invention of first technical scheme is a kind of loudspeaker unit, has framework, cone, magnetic loop and voice coil loudspeaker voice coil, and the peripheral shape of above-mentioned cone is an elongated shape, forms the hole at central portion, and peripheral part is installed in said frame; Above-mentioned magnetic loop is arranged on said frame; Above-mentioned voice coil loudspeaker voice coil is made of the bobbin of tubular and the coil that is wound on the outer peripheral face of this bobbin, above-mentioned coil configuration is in the magnetic field that is produced by above-mentioned magnetic loop, be connected with the interior perimembranous side of above-mentioned cone, it is characterized in that, above-mentioned magnetic loop has magnetic force generation device and yoke portion, above-mentioned yoke portion is arranged on the position relative with the interior perimembranous of above-mentioned cone of said frame, has the bottom, the first wall portion, the second wall portion, above-mentioned bottom is provided with above-mentioned magnetic force generation device at central portion, the above-mentioned first wall portion, the second wall portion has a compartment of terrain from the periphery of the above-mentioned bottom relative with the length side of above-mentioned cone between the side face of the interior perimembranous extension of above-mentioned cone and inner face and above-mentioned magnetic force generation device relative; Above-mentioned voice coil loudspeaker voice coil disposes as follows, and the outer peripheral face of the inner peripheral surface of above-mentioned bobbin and above-mentioned magnetic force generation device has at interval, the inner peripheral surface of the first wall portion of the outer peripheral face of above-mentioned bobbin and above-mentioned yoke portion, the second wall portion has the compartment of terrain and locatees; The outer peripheral face of the bobbin of above-mentioned voice coil loudspeaker voice coil is connected by coupling with the hole of above-mentioned cone; Above-mentioned coupling is made of top and tube portion, and above-mentioned top is relative with the bottom of above-mentioned yoke portion via the space, inserts the bobbin of the bottom side opposition side of logical and above-mentioned yoke portion at central portion, is formed with the hole of outer peripheral face that will the above-mentioned bobbin of installation; Above-mentioned tube portion comprises the relative wall of the first wall portion, the relative wall of the second wall portion, relative wall of the first magnetic force generation device and the relative wall of the second magnetic force generation device, the relative wall of the above-mentioned first wall portion extends from the periphery at this top bottom side to above-mentioned yoke portion, to have a compartment of terrain relative with the outside of the first wall portion of above-mentioned yoke portion, it is relative that the relative wall of the above-mentioned second wall portion and the outside of the above-mentioned second wall portion have the compartment of terrain, the relative wall of the above-mentioned first magnetic force generation device is formed into circumferential the opposing party end of the relative wall of the above-mentioned second wall portion from a circumferential square end portion of the relative wall of the above-mentioned first wall portion, to have a compartment of terrain relative with the side face of above-mentioned magnetic force generation device, the relative wall of the above-mentioned second magnetic force generation device is formed into circumferential the opposing party end of the relative wall of the above-mentioned first wall portion from a circumferential square end portion of the relative wall of the above-mentioned second wall portion, to have a compartment of terrain relative with the side face of above-mentioned magnetic force generation device, with the interior perimembranous of the length side in the hole of above-mentioned cone and the relative wall of the first wall portion of above-mentioned coupling, the periphery of the relative wall of the second wall portion connects, with the interior perimembranous of the width side in the hole of above-mentioned cone and the relative wall of the first magnetic force generation device of above-mentioned coupling, the periphery of the relative wall of the second magnetic force generation device connects.
The invention of second technical scheme is the loudspeaker unit of putting down in writing according in first technical scheme, it is characterized in that, above-mentioned magnetic force generation device has first magnet, plate and second magnet; Above-mentioned first magnet is arranged on the bottom of above-mentioned yoke portion, and the direction of magnetization is the direction with above-mentioned bottom quadrature; Above-mentioned plate is on this first magnet, by constituting at the stacked magnetic material of the direction identical with the direction of magnetization of above-mentioned first magnet; Above-mentioned second magnet is layered on this plate in the direction identical with the direction of magnetization of above-mentioned first magnet, and the direction of magnetization is identical with the direction of magnetization of above-mentioned first magnet, and is relative with the above-mentioned first magnet homopolarity by above-mentioned plate.
In addition, " elongated shape " in this specification is meant rectangle, trade shape (fillet rectangle), ellipse etc.
According to the invention of putting down in writing in first technical scheme, the yoke portion of magnetic loop has the first wall portion, the second wall portion, the above-mentioned first wall portion, the second wall portion extends to the interior perimembranous of above-mentioned cone from the periphery of the above-mentioned bottom relative with the length side of above-mentioned cone, it is relative to have the compartment of terrain between the side face of inner face and above-mentioned magnetic force generation device, above-mentioned voice coil loudspeaker voice coil disposes as follows, the outer peripheral face of the inner peripheral surface of above-mentioned bobbin and above-mentioned magnetic force generation device has at interval, the first wall portion of the outer peripheral face of above-mentioned bobbin and above-mentioned yoke portion, the inner peripheral surface of the second wall portion has the location, compartment of terrain, make the actuating force of cone vibration become big, the efficient height in view of the above.
In addition, the outer peripheral face of the bobbin of above-mentioned voice coil loudspeaker voice coil is connected by coupling with the hole of above-mentioned cone, and above-mentioned coupling is made of top and tube portion; Above-mentioned top is relative with the bottom of the yoke portion of above-mentioned voice coil loudspeaker voice coil via the space, inserts the bobbin of the bottom side opposition side of logical and above-mentioned yoke portion at central portion, is formed with the hole of the outer peripheral face that is used to install bobbin; Above-mentioned tube portion is by the relative wall of the first wall portion, the relative wall of the second wall portion, the relative wall of the first magnetic force generation device, the relative wall of the second magnetic force generation device constitutes, the relative wall of the above-mentioned first wall portion extends from the periphery at this top bottom side to above-mentioned yoke portion, to have a compartment of terrain relative with the outside of the first wall portion of above-mentioned yoke portion, it is relative that the relative wall of the above-mentioned second wall portion and the outside of the above-mentioned second wall portion have the compartment of terrain, the relative wall of the above-mentioned first magnetic force generation device is formed into circumferential the opposing party end of the relative wall of the above-mentioned second wall portion from a circumferential square end portion of the relative wall of the above-mentioned first wall portion, to have a compartment of terrain relative with the side face of above-mentioned magnetic force generation device, the relative wall of the above-mentioned second magnetic force generation device is formed into circumferential the opposing party end of the relative wall of the above-mentioned first wall portion from a circumferential square end portion of the relative wall of the above-mentioned second wall portion, to have a compartment of terrain relative with the side face of above-mentioned magnetic force generation device, with the interior perimembranous of the length side in the hole of above-mentioned cone and the relative wall of the first wall portion of above-mentioned coupling, the periphery of the relative wall of the second wall portion connects, with the interior perimembranous of the width side in the hole of above-mentioned cone and the relative wall of the first magnetic force generation device of above-mentioned coupling, the periphery of the relative wall of the second magnetic force generation device connects.In view of the above, can make the vibration enlarged areas of the width side of cone, guarantee the vibration area of cone fully.
In addition, be connected with the yoke portion bottom side of coupling by interior perimembranous with cone, thus the slimming of realization loudspeaker unit.
According to the invention of putting down in writing in second technical scheme, above-mentioned magnetic force generation device has first magnet, plate and second magnet, and above-mentioned first magnet is arranged on the bottom of above-mentioned yoke portion, and the direction of magnetization is the direction with above-mentioned bottom quadrature; Above-mentioned plate is on this first magnet, by constituting at the stacked magnetic material of the direction identical with the direction of magnetization of above-mentioned first magnet; Above-mentioned second magnet is layered on this plate in the direction identical with the direction of magnetization of above-mentioned first magnet, and the direction of magnetization is identical with the direction of magnetization of above-mentioned first magnet, and is relative with the above-mentioned first magnet homopolarity by above-mentioned plate.In view of the above, the polarity of magnetic loop periphery becomes identical, and the magnetic variation that leaks from loudspeaker unit is few.Therefore, do not need antimagnetic countermeasure.
Description of drawings
Fig. 1 is the figure of the invention part of expression execution mode, is the profile along the hatching I-I of Fig. 5.
Fig. 2 is the stereogram of the yoke portion of Fig. 1.
Fig. 3 is the stereogram of the coupling of Fig. 1.
Fig. 4 is the enlarged drawing of the magnetic loop of Fig. 1.
Fig. 5 is the front view of the loudspeaker unit of execution mode.
Fig. 6 is the rearview of Fig. 5.
The explanation of Reference numeral
1 cone
The 1a hole
11 magnetic loops
13 yoke portions
19 first wall portions
21 second wall portions
35 voice coil loudspeaker voice coils
41 couplings
Embodiment
At first, with reference to Fig. 5, Fig. 6 the overall structure of the loudspeaker unit of execution mode is described.Fig. 5 is the front view of the loudspeaker unit of execution mode, and Fig. 6 is the rearview of Fig. 5.In these figure, the peripheral shape of cone 1 is orbit-shaped (a fillet rectangle), and its peripheral part is installed in framework 3 via edge 5.
Then, with reference to Fig. 1～Fig. 4 the internal structure of loudspeaker unit is described.Fig. 1 is the profile of the hatching I-I of Fig. 5, and Fig. 2 is the stereogram of the yoke portion of Fig. 1, and Fig. 3 is the stereogram of the coupling of Fig. 1, and Fig. 4 is the enlarged drawing of the magnetic loop of Fig. 1.
As Fig. 1, shown in Figure 4, magnetic loop 11 is set at the central portion of framework 3.This magnetic loop 11 is made of yoke portion 13 and magnetic force generation device 15.In addition, the central portion at cone 1 forms hole 1a.
As shown in Figure 1 and Figure 2, yoke portion 13 is arranged on the relative position of interior perimembranous 1b that the hole 1a with by cone 1 of framework 3 forms.Yoke portion 13 is made of bottom 17 and the first wall portion 19, the second wall portion 21; Above-mentioned bottom 17 is provided with magnetic force generation device 15 at central portion; The above-mentioned first wall portion 19, the second wall portion 21 extend to the interior perimembranous 1b of cone 1 from the periphery of the bottom 17 relative with the length side of cone 1, and it is relative to have the compartment of terrain between the side face of inner face and magnetic force generation device 15.
In addition, as Fig. 1, shown in Figure 4, magnetic force generation device 15 is made of first magnet 23, plate 25 and second magnet 27, and above-mentioned first magnet 23 is arranged on the bottom 17 of yoke portion 13, and the direction of magnetization is the direction with bottom 17 quadratures; Above-mentioned plate 25 is on first magnet 23, by at the stacked magnetic material of the direction identical with the direction of magnetization of first magnet 23; Above-mentioned second magnet 27 is on plate 25, and is stacked in the direction identical with the direction of magnetization of first magnet 23, and the direction of magnetization is identical with the direction of magnetization of first magnet 23, relative with first magnet, 23 homopolarities via plate 25.In the present embodiment, with plate 25 sides as the N utmost point.Therefore, near the outer peripheral face of plate 25, produce magnetic field.Especially because leakage flux is few between the first wall portion 19 of plate 25 and yoke portion 13, the second wall portion 21, so produce big magnetic field.
As Fig. 1, shown in Figure 4, voice coil loudspeaker voice coil 35 is made of the bobbin 31 of tubular and the coil 33 that is wound on the outer peripheral face of bobbin 31.Be connected with framework 3 by peripheral part, the vibration absorber 37 that interior perimembranous is connected with the bobbin 31 of voice coil loudspeaker voice coil 35 is at the bobbin 31 support voice coil loudspeaker voice coils 35 of this voice coil loudspeaker voice coil 35.By vibration absorber 37, the outer peripheral face that voice coil loudspeaker voice coil 35 is configured to the inner peripheral surface of bobbin 31 and magnetic force generation device 15 has at interval, the inner peripheral surface of the first wall portion 19 of the outer peripheral face of bobbin 31 and yoke portion 13, the second wall portion 21 has the compartment of terrain and locatees.And the mode of outer peripheral face that is positioned at the plate 25 of magnetic force generation device 15 with the coil 33 of voice coil loudspeaker voice coil 35 disposes.
As shown in Figure 1, the hole 1a of the periphery of the bobbin 31 of voice coil loudspeaker voice coil 35 and cone 1 is connected by coupling 41.
As Fig. 1, shown in Figure 3, coupling 41 is made of top 43 and tube portion 45.Top 43 is relative via the space with the bottom 17 of the yoke portion 13 of voice coil loudspeaker voice coil 35, inserts the bobbin 31 of the bottom 17 side opposition sides of logical and yoke portion 13 at central portion, and is formed with the hole 47 of the outer peripheral face that is used to install bobbin 31.Relative with the second magnetic force generation device wall 45d constitutes by the relative wall 45a of the first wall portion, the relative wall 45b of the second wall portion, the relative wall 45c of the first magnetic force generation device in tube portion 45; 43 periphery extends to the bottom of yoke portion 13 17 sides the above-mentioned relative wall 45a of the first wall portion from the top, and to have a compartment of terrain relative with the outside of the first wall portion 19 of yoke portion 13; It is relative that the above-mentioned relative wall 45b of the second wall portion and the outside of the second wall portion 21 have the compartment of terrain; The circumferential the opposing party end of the relative wall 45c of the above-mentioned first magnetic force generation device from the circumferential square end portion of the relative wall 45a of the first wall portion to the relative wall 45b of the second wall portion forms, and to have a compartment of terrain relative with the side face of magnetic force generation device 15; The circumferential the opposing party end of the relative wall 45d of the above-mentioned second magnetic force generation device from the circumferential square end portion of the relative wall 45b of the second wall portion to the relative wall 45a of the first wall portion forms, and to have a compartment of terrain relative with the side face of magnetic force generation device 15.
The interior perimembranous of the length side of the hole 1a of cone 1 connects with the periphery of the relative wall 45a of the first wall portion, the relative wall 45b of the second wall portion of coupling 41, and the interior perimembranous of the width side of the hole 1a of cone 1 connects with the periphery of the relative wall 45c of the first magnetic force generation device, the relative wall 45d of the second magnetic force generation device of coupling 41.
In addition, in Fig. 1, terminal 51 is set at framework 3, the coil 33 usefulness lead (of terminal 51 and voice coil loudspeaker voice coil 35 ?yarn Line) 53 be electrically connected.In addition, the opening of voice coil loudspeaker voice coil 35 and bottom yoke portion 13 17 side opposition sides, the dust cap 55 that is arranged on middle body in cone 1 usefulness covers.
Then, the work to the loudspeaker unit of said structure describes.The signal of telecommunication that is input to terminal 51 is passed to the coil 33 of voice coil loudspeaker voice coil 35 by bright and beautiful silk thread 53.Because coil 33 is configured in the magnetic field that is produced by magnetic loop 11, so the actuating force that is produced by coil (voice coil loudspeaker voice coil) 33 (35) makes cone 1 vibration.Emit sound from cone 1.
According to said structure, can access following effect.
(1) the yoke portion 13 of magnetic loop 11 is by being provided with the first wall portion 19, the second wall portion 21, and leakage flux tails off between the first wall portion 19 of plate 25 and yoke portion 13, the second wall portion 21, produces big magnetic field.Therefore, make the actuating force of cone 1 vibration become big, the efficient height.
(2) because of the first wall portion 19 of yoke portion 13, the length side that the second wall portion 21 is arranged on cone 1, width side at cone 1 is not provided with wall portion, so can guarantee vibration enlarged areas, can guarantee the vibration area of cone 1 fully with the width side of cone 1.
(3) utilize interior perimembranous to be connected, thereby realize the slimming of loudspeaker unit with bottom 17 sides of the yoke portion 13 of coupling 41 with cone 1.
(4) magnetic force generation device 15 is made of first magnet 23, plate 25, second magnet 27; Above-mentioned first magnet 23 is arranged on the bottom 17 of yoke portion 13, and the direction of magnetization is the direction with bottom 17 quadratures; Plate 25 is on first magnet 23, by constituting at the stacked magnetic material of the direction identical with the direction of magnetization of first magnet 23; Second magnet 27 is on plate 25, and is stacked in the direction identical with the direction of magnetization of first magnet 23, and the direction of magnetization is identical with the direction of magnetization of first magnet 23, relative with first magnet, 23 homopolarities by plate 25.The polarity of magnetic loop periphery becomes identical in view of the above, and the magnetic variation that leaks from loudspeaker unit is few.Therefore, do not need antimagnetic countermeasure.
The present invention is not defined in above-mentioned execution mode.In the above-described embodiment, though the shape of cone 1 is arranged to orbit-shaped (fillet rectangle), be not defined as orbit-shaped.Also can be other rectangle, ellipse etc.
Claims (2)
1. a loudspeaker unit has framework, cone, magnetic loop and voice coil loudspeaker voice coil,
The peripheral shape of above-mentioned cone is an elongated shape, forms the hole at central portion, and peripheral part is installed in said frame;
Above-mentioned magnetic loop is arranged on said frame;
Above-mentioned voice coil loudspeaker voice coil is made of the bobbin of tubular and the coil that is wound on the outer peripheral face of this bobbin, and above-mentioned coil configuration is connected with the interior perimembranous side of above-mentioned cone in the magnetic field that is produced by above-mentioned magnetic loop, it is characterized in that,
Above-mentioned magnetic loop has magnetic force generation device and yoke portion,
Above-mentioned yoke portion is arranged on the position relative with the interior perimembranous of above-mentioned cone of said frame, have bottom, the first wall portion, the second wall portion, above-mentioned bottom is provided with above-mentioned magnetic force generation device at central portion, and the above-mentioned first wall portion, the second wall portion have a compartment of terrain from the periphery of the above-mentioned bottom relative with the length side of above-mentioned cone between the side face of the interior perimembranous extension of above-mentioned cone and inner face and above-mentioned magnetic force generation device relative;
Above-mentioned voice coil loudspeaker voice coil disposes as follows, and the outer peripheral face of the inner peripheral surface of above-mentioned bobbin and above-mentioned magnetic force generation device has at interval, the inner peripheral surface of the first wall portion of the outer peripheral face of above-mentioned bobbin and above-mentioned yoke portion, the second wall portion has the compartment of terrain and locatees;
The outer peripheral face of the bobbin of above-mentioned voice coil loudspeaker voice coil is connected by coupling with the hole of above-mentioned cone;
Above-mentioned coupling is made of top and tube portion,
Above-mentioned top is relative with the bottom of above-mentioned yoke portion via the space, inserts the bobbin of the bottom side opposition side of logical and above-mentioned yoke portion at central portion, is formed with the hole of the outer peripheral face that is used to install above-mentioned bobbin;
Above-mentioned tube portion comprises the relative wall of the first wall portion, the relative wall of the second wall portion, relative wall of the first magnetic force generation device and the relative wall of the second magnetic force generation device, the relative wall of the above-mentioned first wall portion extends from the periphery at this top bottom side to above-mentioned yoke portion, to have a compartment of terrain relative with the outside of the first wall portion of above-mentioned yoke portion, it is relative that the relative wall of the above-mentioned second wall portion and the outside of the above-mentioned second wall portion have the compartment of terrain, the relative wall of the above-mentioned first magnetic force generation device is formed into circumferential the opposing party end of the relative wall of the above-mentioned second wall portion from a circumferential square end portion of the relative wall of the above-mentioned first wall portion, to have a compartment of terrain relative with the side face of above-mentioned magnetic force generation device, the relative wall of the above-mentioned second magnetic force generation device is formed into circumferential the opposing party end of the relative wall of the above-mentioned first wall portion from a circumferential square end portion of the relative wall of the above-mentioned second wall portion, to have a compartment of terrain relative with the side face of above-mentioned magnetic force generation device
Interior perimembranous and the relative wall of the first wall portion of above-mentioned coupling, the periphery of the relative wall of the second wall portion of the length side in the hole of above-mentioned cone are connected, with the interior perimembranous and the relative wall of the first magnetic force generation device of above-mentioned coupling, the periphery connection of the relative wall of the second magnetic force generation device of the width side in the hole of above-mentioned cone.
2. loudspeaker unit according to claim 1 is characterized in that, above-mentioned magnetic force generation device has first magnet, plate and second magnet;
Above-mentioned first magnet is arranged on the bottom of above-mentioned yoke portion, and the direction of magnetization is the direction with above-mentioned bottom quadrature;
Above-mentioned plate is on this first magnet, by constituting at the stacked magnetic material of the direction identical with the direction of magnetization of above-mentioned first magnet;
Above-mentioned second magnet is layered on this plate in the direction identical with the direction of magnetization of above-mentioned first magnet, and the direction of magnetization is identical with the direction of magnetization of above-mentioned first magnet, and is relative with the above-mentioned first magnet homopolarity by above-mentioned plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009168534A JP4814361B2 (en) | 2009-07-17 | 2009-07-17 | Speaker unit |
| JP2009-168534 | 2009-07-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101959104A true CN101959104A (en) | 2011-01-26 |
| CN101959104B CN101959104B (en) | 2013-07-03 |
Family
ID=43486156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101787410A Active CN101959104B (en) | 2009-07-17 | 2010-05-12 | Speaker unit |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4814361B2 (en) |
| KR (1) | KR101129904B1 (en) |
| CN (1) | CN101959104B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172299A1 (en) * | 2014-05-12 | 2015-11-19 | 刘骏涛 | Mini-speaker |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10681468B2 (en) * | 2017-07-27 | 2020-06-09 | Yamaha Corporation | Speaker diaphragm and coil coupling arrangement, and method |
| KR102205854B1 (en) * | 2019-09-17 | 2021-01-21 | 김동만 | Flat type speaker including asymmetric magnet structure and base frame |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050111690A1 (en) * | 2003-11-21 | 2005-05-26 | Pioneer Corporation | Speaker apparatus |
| CN1640188A (en) * | 2002-02-25 | 2005-07-13 | 福斯特电机株式会社 | Thin speaker and method of manufacturing the speaker |
| JP2009027682A (en) * | 2007-10-31 | 2009-02-05 | Namiki Precision Jewel Co Ltd | Magnetic circuit structure of multi-functional vibration actuator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2940587B2 (en) * | 1993-03-30 | 1999-08-25 | 株式会社ケンウッド | Speaker vibration detection device |
| JP2002159094A (en) * | 2000-11-17 | 2002-05-31 | Matsushita Electric Ind Co Ltd | Speaker |
| JP2009105704A (en) * | 2007-10-24 | 2009-05-14 | Nidec Pigeon Corp | Speaker |
-
2009
- 2009-07-17 JP JP2009168534A patent/JP4814361B2/en active Active
-
2010
- 2010-05-07 KR KR1020100042698A patent/KR101129904B1/en active IP Right Grant
- 2010-05-12 CN CN2010101787410A patent/CN101959104B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640188A (en) * | 2002-02-25 | 2005-07-13 | 福斯特电机株式会社 | Thin speaker and method of manufacturing the speaker |
| US20050111690A1 (en) * | 2003-11-21 | 2005-05-26 | Pioneer Corporation | Speaker apparatus |
| JP2009027682A (en) * | 2007-10-31 | 2009-02-05 | Namiki Precision Jewel Co Ltd | Magnetic circuit structure of multi-functional vibration actuator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015172299A1 (en) * | 2014-05-12 | 2015-11-19 | 刘骏涛 | Mini-speaker |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20110007941A (en) | 2011-01-25 |
| KR101129904B1 (en) | 2012-03-28 |
| JP2011024069A (en) | 2011-02-03 |
| JP4814361B2 (en) | 2011-11-16 |
| CN101959104B (en) | 2013-07-03 |
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Address after: Japan Tokyo akishima Zhou hill a plantar chome 1 No. 109 Patentee after: Foster Electric Company Ltd. Address before: Tokyo, Japan Patentee before: Foster Electric Company Ltd. |