CN204272374U - The loud speaker of magnet is installed in front - Google Patents
The loud speaker of magnet is installed in front Download PDFInfo
- Publication number
- CN204272374U CN204272374U CN201420445764.7U CN201420445764U CN204272374U CN 204272374 U CN204272374 U CN 204272374U CN 201420445764 U CN201420445764 U CN 201420445764U CN 204272374 U CN204272374 U CN 204272374U
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- Prior art keywords
- voice coil
- magnet
- loud speaker
- central part
- sound film
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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
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/22—Clamping rim of diaphragm or cone against seating
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model relates to the loud speaker (200) that magnet is installed in a kind of front, comprising: support frame (4,5), define the magnet assembly (1) of air gap (T), the voice coil loudspeaker voice coil (2) of cylindrical portion (20) is supported in the mode that can move axially in the air gap of magnet assembly (1) (T), sound film (203), it has the centre bore (235) of the center edge (230) defining the cylindrical portion (20) being fixed to voice coil loudspeaker voice coil, be connected to framework (4, 5) periphery (236) and the tapered portion (233) be positioned between the center edge (230) of sound film and periphery (236) and the central part (231) be arranged between center edge (230) and tapered portion (233), in addition, the loud speaker that magnet is installed in described front comprises stiffener (208), there is the peripheral outer lips (281) of the smooth central part (231) being fixed on sound film.
Description
Technical field
The utility model patent application relates to a kind of loud speaker with front filling magnet.
Background technology
Loud speaker comprises: limit the magnet assembly of air gap and the voice coil loudspeaker voice coil of movement in air gap.Sound film is to vibrate and sonorific mode is connected to described voice coil loudspeaker voice coil.
Loud speaker has rear side and face side, and described rear side is made up of the framework for support speaker, and described face side is for launching the sound produced by described sound vibration of membrane.
In traditional loud speaker, usually sound film is arranged on before loud speaker, and magnet assembly is arranged on after sound film.
Such traditional loud speaker has very large volume vertically, and this is because the volume of sound film and magnet assembly causes.
In order to reduce volume, the loud speaker with front installation magnet is known.In fact, must be noted that sound film has the shape of the truncated cone usually, have towards the concavity before loud speaker.Therefore, this magnet assembly is arranged on before loud speaker, utilizes the depression of this sound film and do not increase any extra volume.
Fig. 1 shows the loud speaker with front installation magnet according to prior art, usually with Reference numeral 100.
Loud speaker 100 comprises:
-support frame 4,5,
-define the magnet assembly 1 of air gap T, be fixed on support frame,
-voice coil loudspeaker voice coil 2, is bearing in cylindrical portion 20 in the mode that can move axially in the air gap T of magnet assembly 1,
-sound film 3, to vibrate and sonorific mode is connected in the cylindrical portion 20 of described framework and voice coil loudspeaker voice coil 2, and
-resilient suspension 6,7, is connected to the cylindrical portion of this voice coil loudspeaker voice coil and sound film on framework.
Described sound film 3 has the shape of the truncated cone and comprises the centre bore defining central cylindrical edge 30, and this central cylindrical edge is directly fixed in the cylindrical portion 20 of voice coil loudspeaker voice coil, and the cylindrical portion of this voice coil loudspeaker voice coil is axially arranged relative to the sound film 3 of this truncated cone.
Support frame comprises the after-frame 4 and front frame 5 that are bonded with each other.
Magnet assembly 1 is supported by front frame 5, thus is arranged on the front portion of sound film 3 relative to the sound film 3 of this truncated cone in the axial direction.
Magnet assembly 1 comprises annular magnet 10, be arranged on the pole plate 11 with annular shape and there is T section, between the magnetic pole 12 that is commonly called " T yoke ".
Magnetic pole 12 is fixed on front frame 5 and has the space I that described voice coil loudspeaker voice coil 2 slides wherein.
This suspension comprises the first rack 6 and the second rack 7.
First rack 6 for having the wavy disc-shape of centre bore, and has the central cylindrical portion 60 of the cylindrical portion 20 being directly fixed on described voice coil loudspeaker voice coil and is fixed to the peripheral part 61 of after-frame 4.
The shape of the second rack 7 is ripple ring-type, and the central part 70 with the periphery 36 being fixed on sound film and the outer part 71 be fixed between after-frame 4 and front frame 5.
Dust cap 8 is fixed on the trailing edge of cylindrical portion 20 of described voice coil loudspeaker voice coil, enters air gap to prevent dust.
But the loud speaker of prior art 100 occupies a large space because of the circular cone shape of sound film 3.In addition, the shortcoming that causes because of the cylindrical portion 20 that lid 8 is directly fixed on voice coil loudspeaker voice coil of loud speaker 100 and weakened.
In fact, applicant has found to provide this cylindrical portion 20 lid 8 being directly fixed on voice coil loudspeaker voice coil to add the resonance frequency of loud speaker, thus is degrading the low frequency performance of loud speaker.
Another shortcoming of loud speaker 100 relates to and is directly fixed with the cylindrical portion 20 of described voice coil loudspeaker voice coil by the central part 60 of the first rack 6.In fact, such is fixedly complicated and insecure.
The loud speaker had at front installation magnet of known other types, wherein said sound film is not directly connected with voice coil loudspeaker voice coil, but is connected on the Connection Element of the cylindrical portion being fixed on voice coil loudspeaker voice coil.Such Connection Element has with the identical characteristic of dust cap 8 of Fig. 1 and has aforesaid drawbacks.
Utility model content
The purpose of this utility model has front by design and installs magnet, has loud speaker at axially minimum volume and good low frequency performance, in order to make up the shortcoming of prior art.
Another object of the present utility model has front by design to install the reliable of magnet and loud speaker that is that easily make, in order to make up shortcoming of the prior art.
The loud speaker that magnet is installed in front of the present utility model comprises:
-support frame,
-define the magnet assembly of air gap, be fixed on described support frame,
-voice coil loudspeaker voice coil, is supported on cylindrical portion in the mode that can move axially in the air gap of magnet assembly,
-sound film, to vibrate and sonorific mode is connected with the cylindrical portion of described framework and voice coil loudspeaker voice coil,
-resilient suspension, is connected to described support frame by the cylindrical portion of voice coil loudspeaker voice coil and sound film,
Wherein
Described sound film comprises: the centre bore defining the center edge of the cylindrical portion being directly fixed to voice coil loudspeaker voice coil, is connected to the periphery of described framework, and the tapered portion between the center edge and periphery of sound film, and
Described magnet assembly is arranged vertically on the height of the periphery of sound film, it is characterized in that,
Described sound film comprises the smooth central part be arranged between center edge and tapered portion, and the smooth central part of described sound film from the cylindrical portion of voice coil loudspeaker voice coil radially outwardly, and extends along the plane perpendicular to the axis of the cylindrical portion of voice coil loudspeaker voice coil, and
The loud speaker that magnet is installed in described front also comprises stiffener, and this stiffener comprises the annular slab of the smooth central part being fixed on sound film, and wherein said stiffener is not fixed with the cylindrical portion of voice coil loudspeaker voice coil.
Described stiffener comprises central part, for the opening that the trailing edge of the cylindrical portion covering described moving coil limits, to avoid the infiltration of foreign matter in air gap, wherein said central part does not contact with the cylindrical portion of moving coil, and peripheral outer lips is fixed on the smooth central part of described sound film.
Described resilient suspension comprises: have wavy disc-shape and have the first rack of centre bore and central part, described central part is fixed between the peripheral outer lips of described stiffener and the smooth central part of described sound film with sandwich.
Described resilient suspension comprises second rack with annular shape, and this second rack comprises:
-be fixed on the central part of the outer peripheral portion of described sound film, and
-be fixed on the outer part of described support frame.
Described framework comprises the after-frame and front frame that link together, and described front frame has the central part supporting described magnet assembly.
Described magnet assembly comprises the annular magnet being arranged on and having between the pole plate of annular shape and the magnetic pole with T section, described in there is annular shape pole plate be fixed on the central part of described front frame.
The utility model have also been devised loud speaker and the housing unit that magnet is installed in a kind of front, comprises the loud speaker that magnet is installed in aforementioned front, and receives described front to install the housing of the vehicle of the loud speaker of magnet.Described housing is the housing under seat.
The difference of the loud speaker of loud speaker of the present utility model and prior art is, described sound film comprises the planar radial smooth central part outwardly from the cylindrical portion of voice coil loudspeaker voice coil along the axis perpendicular with voice coil loudspeaker voice coil cylindrical portion.
The axial dimension that this smooth central part reduces loud speaker is set.But the par of sound film does not have enough rigidity.
Therefore, design a kind of stiffener, be set to have the periphery flange of the smooth central part being fixed to described sound film, thus effectively transmit the axial motion of cylindrical portion towards the Both frustum sections of described sound film of voice coil loudspeaker voice coil.
Importantly, stiffener is not fixed with the cylindrical portion of described voice coil loudspeaker voice coil, to reduce the cut-off frequency of loud speaker, and improves low frequency characteristic.
Accompanying drawing explanation
Supplementary features of the present utility model will embody in the following detailed description, with reference to accompanying drawing, and the wherein object of equal being illustrative rather than definitive thereof property, wherein:
Fig. 1 is the axonometric drawing with the loud speaker installing magnet in front according to prior art;
Fig. 2 is according to the exploded view with the parts of the loud speaker installing magnet in front of the present utility model;
Fig. 3 is the loud speaker axonometric drawing in the assembled state of Fig. 2;
Fig. 4 is the axonometric drawing of the loud speaker of Fig. 1 and Fig. 3, and wherein, it is to show different axial dimensions that described loud speaker carries out contrasting;
Fig. 5 is the axonometric drawing of the first embodiment according to loud speaker of the present utility model;
Fig. 5 A is the enlarged drawing of the details in the rectangle A in Fig. 5;
Fig. 6 is the axonometric drawing of the second embodiment according to loud speaker of the present utility model;
Fig. 6 A is the enlarged drawing of the details in the rectangle A in Fig. 6.
Embodiment
Below with describe identical or corresponding element before and use identical Reference numeral, omit the detailed description to them.
Fig. 2 and Fig. 3 shows according to loud speaker of the present utility model, generally represents with Reference numeral 200.
Loud speaker 200 comprises:
-support frame 4,5,
-define the magnet assembly 1 of air gap T, be fixed on described support frame,
-voice coil loudspeaker voice coil 2, is supported on cylindrical portion 20 in the mode that can move axially in the air gap T of described magnet assembly 1,
-sound film 203, to vibrate and sonorific mode is connected with the cylindrical portion 20 of support frame and voice coil loudspeaker voice coil 2;
-resilient suspension 6,7, is connected to described support frame by the cylindrical portion 20 of voice coil loudspeaker voice coil and sound film 203.
Magnet assembly 1 comprises permanent magnet 10, has annular shape in the present embodiment, is arranged on the pole plate 11 with ring-type and is made up of soft iron and between the magnetic pole 12 with T section (being commonly called " T yoke ").These parts can have different shapes, if they comprise permanent magnet and be made up of soft iron, the parts that are suitable for creating the air gap that described voice coil loudspeaker voice coil slides wherein.
Sound film 203 comprises:
-centre bore 235 (Fig. 2), which defines the center edge 230 of the cylindrical portion 20 being directly fixed to voice coil loudspeaker voice coil,
-be connected to the periphery 236 of described support frame 4,5, and
-tapered portion 233 between the center edge 230 and periphery 236 of sound film.
Sound film 203 also comprises the smooth central part 231 of annular, between center edge 230 and tapered portion 233.
When the center edge 230 of sound film is fixed to the cylindrical portion 20 of voice coil loudspeaker voice coil, the central part 231 of sound film is radially given prominence to from the cylindrical portion of voice coil loudspeaker voice coil, and extends along the plane perpendicular to the axis of the cylindrical portion of voice coil loudspeaker voice coil.
The setting of the smooth central part 231 of sound film reduces the axial dimension of sound film 203 relative to Fig. 1 middle pitch film 3, maintains identical acoustic characteristic simultaneously.The cylindrical portion 20 of voice coil loudspeaker voice coil be arranged on relative to sound film tapered portion 233 axially.
But when the cylindrical portion of voice coil loudspeaker voice coil moves, the central part 231 due to sound film is directly fixed to the cylindrical portion of described voice coil loudspeaker voice coil, so the central part 231 of sound film is tending towards distortion and loses its rigidity.
A kind of stiffener 208 has been designed for making up such shortcoming according to the utility model.Stiffener 208 has central part 280 and is fixed to the peripheral outer lips 281 of central part 231 of sound film, thus the central part 231 of holding tone film is always positioned at plan position approach.
Can say, stiffener 208 is not fixed with the cylindrical portion 20 of described voice coil loudspeaker voice coil and do not contacted with cylindrical portion 20 is important.Consider described situation, stiffener 208, as extra quality, reduces the resonance frequency of loud speaker, improves low frequency performance.
Although the central part 280 of stiffener does not contact with the back edge of the cylindrical portion 20 of described voice coil loudspeaker voice coil, the central part of this stiffener encloses the opening of cylindrical portion 20 and prevents dust and foreign matter from entering air gap T.
This framework comprises the after-frame 4 and front frame 5 that are bonded with each other.
Front frame 5 has central part 50, and pole plate 11 is fixed thereon, thus the periphery 236 of magnet assembly 1 and sound film is substantially in same level, that is, magnet assembly 1 to be positioned at before sound film and at the axial location of the sound film relative to the described truncated cone.
First rack 6, for having the wavy disc-shape of centre bore 65, has the central part 60 between the central part 231 being fixed on the peripheral outer lips 281 of stiffener and the smooth of sound film.In view of described situation, the central part 60 of the first rack does not contact with the cylindrical portion 20 of voice coil loudspeaker voice coil.Therefore, this solution overcomes complicated for rack unreliable the relevant issues being fixed to the cylindrical portion of voice coil loudspeaker voice coil.
Second rack 7 is ripple ring-shaped.Second rack 7 comprises:
-central part 70, is fixed on the periphery 236 of sound film, and
-outer part 71, is fixed between after-frame 4 and front frame 5.
It should be noted that stiffener 208 has four functions:
1) make the smooth central part 231 of sound film hardening, to ensure the best transmission of the axial motion of the rake of the sound film from the cylindrical portion 20 of mobile voice coil loudspeaker voice coil to the truncated cone,
2) as additional quality, reduce the resonance frequency of loud speaker and improve low frequency performance,
3) ensure that the perfection being bonded in the central part 60 of described first rack between the smooth central part 231 of sound film and stiffener 208 with sandwich is fixed,
4) close the cylindrical portion 20 of mobile voice coil loudspeaker voice coil, enter air gap T to prevent foreign matter.
Shown in reference Fig. 4, compared to the loud speaker 100 of prior art, setting has the sound film 203 of smooth central part 231 and arranges the cylindrical portion 20 that described stiffener 208 allows to obtain more smooth loud speaker 200 voice coil loudspeaker voice coil shorter with use.
As shown in Figure 4, the loud speaker 100 of prior art has axial dimension h1, and loud speaker 200 has axial dimension h2, and height s approximately decreases 15% compared with the height h1 of the loud speaker of prior art.
As shown in figs. 5 and 5, according to the first embodiment of the present utility model, loud speaker 200 comprises shape and is annular plate-like and is arranged on the second reinforcing element 300 on the smooth central part 231 of described sound film.
As shown in Fig. 6 and Fig. 6 A, according to the second embodiment of the present utility model, stiffener 208 only includes the annular slab 581 be arranged on the smooth central part 231 of sound film.In this case, the lower edge that 8 put on the cylindrical portion 2 of voice coil loudspeaker voice coil is covered.
Must be noted that loud speaker of the present utility model is preferably mounted in the housing that is formed in vehicle, such as, below the seat of vehicle, door or instrument board.
Consider space limited in the housing of vehicle, be usually less than 100 millimeters, loud speaker must have the axial dimension being less than 100 millimeters, is preferably 85 millimeters.
The change carried out embodiment of the present utility model in the scope that those skilled in the art understand and amendment, still fall within scope of the present utility model.
Claims (8)
1. the loud speaker (200) of a front installation magnet, comprising:
-support frame (4,5),
-define the magnet assembly (1) of air gap (T), be fixed on described support frame,
-voice coil loudspeaker voice coil (2), is supported on cylindrical portion (20) in the mode that can move axially in the air gap of magnet assembly (1) (T),
-sound film (203), to vibrate and sonorific mode is connected with the cylindrical portion (20) of described framework and voice coil loudspeaker voice coil (2),
-resilient suspension (6,7), is connected to described support frame (4,5) by the cylindrical portion (20) of voice coil loudspeaker voice coil and sound film,
Wherein
Described sound film (203) comprising: the centre bore (235) defining the center edge (230) of the cylindrical portion (20) being directly fixed to voice coil loudspeaker voice coil, be connected to the periphery (236) of described framework (4,5), and the tapered portion (233) be positioned between the center edge (230) of sound film and periphery (236), and
Described magnet assembly (1) is arranged vertically on the height of the periphery (236) of sound film, it is characterized in that,
Described sound film (203) comprises the smooth central part (231) be arranged between center edge (230) and tapered portion (233), the smooth central part (231) of described sound film from the cylindrical portion (20) of voice coil loudspeaker voice coil radially outwardly, and extend along the plane perpendicular to the axis of the cylindrical portion (20) of voice coil loudspeaker voice coil, and
The loud speaker that magnet is installed in described front also comprises stiffener (208), and this stiffener comprises the annular slab (281 of the smooth central part (231) being fixed on sound film; 581), wherein said stiffener (208) is not fixed with the cylindrical portion (20) of voice coil loudspeaker voice coil.
2. the loud speaker of magnet is installed in front as claimed in claim 1, it is characterized in that, described stiffener (208) comprises central part (280), for the opening that the trailing edge of the cylindrical portion (20) covering described moving coil limits, to avoid the infiltration of foreign matter in air gap (T), wherein said central part (280) does not contact with the cylindrical portion of moving coil, and peripheral outer lips (281) is fixed on the smooth central part (231) of described sound film.
3. the loud speaker of magnet is installed in front as claimed in claim 2, it is characterized in that, described resilient suspension comprises: have wavy disc-shape and have first rack (6) of centre bore (65) and central part (60), described central part (60) is fixed between the central part (231) of the peripheral outer lips (281) of described stiffener and the smooth of described sound film with sandwich.
4., as the loud speaker of magnet is installed in front in any one of the preceding claims wherein, it is characterized in that, described resilient suspension comprises second rack (7) with annular shape, and this second rack comprises:
-be fixed on the central part (70) of the outer peripheral portion (136) of described sound film, and
-be fixed on the outer part (71) of described support frame (4,5).
5. the loud speaker of magnet is installed in front as claimed in claim 1, it is characterized in that, described framework comprises the after-frame (4) and front frame (5) that link together, and described front frame (5) has the central part (50) supporting described magnet assembly (1).
6. the loud speaker of magnet is installed in front as claimed in claim 5, it is characterized in that: described magnet assembly (1) comprises the annular magnet (10) between pole plate (11) and the magnetic pole (12) with T section being arranged on and having annular shape, described in there is annular shape pole plate (11) be fixed on the central part (50) of described front frame.
7. loud speaker and a housing unit for magnet is installed in front, it is characterized in that, comprises the loud speaker (200) that magnet is installed in front in any one of the preceding claims wherein, and receives described front to install the housing of the vehicle of the loud speaker of magnet.
8. loud speaker and the housing unit of magnet is installed in front as claimed in claim 7, and it is characterized in that, described housing is the housing under seat.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITAN2013A000149 | 2013-08-08 | ||
| ITAN20130149 | 2013-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204272374U true CN204272374U (en) | 2015-04-15 |
Family
ID=49226252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420445764.7U Active CN204272374U (en) | 2013-08-08 | 2014-08-08 | The loud speaker of magnet is installed in front |
Country Status (6)
| Country | Link |
|---|---|
| CN (1) | CN204272374U (en) |
| DE (1) | DE202014103620U1 (en) |
| ES (1) | ES1132456Y (en) |
| FR (1) | FR3009662B3 (en) |
| IT (1) | ITAN20140056U1 (en) |
| RU (1) | RU153983U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110913318A (en) * | 2018-09-14 | 2020-03-24 | 哈曼国际工业有限公司 | Loudspeaker frame with tapered spokes |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113965860B (en) * | 2021-12-23 | 2022-04-12 | 深圳市中天迅通信技术股份有限公司 | Sound production unit |
-
2014
- 2014-08-01 IT ITAN2014U000056U patent/ITAN20140056U1/en unknown
- 2014-08-04 RU RU2014132186/28U patent/RU153983U1/en active
- 2014-08-05 DE DE201420103620 patent/DE202014103620U1/en active Active
- 2014-08-07 FR FR1457691A patent/FR3009662B3/en active Active
- 2014-08-07 ES ES201431106U patent/ES1132456Y/en active Active
- 2014-08-08 CN CN201420445764.7U patent/CN204272374U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110913318A (en) * | 2018-09-14 | 2020-03-24 | 哈曼国际工业有限公司 | Loudspeaker frame with tapered spokes |
Also Published As
| Publication number | Publication date |
|---|---|
| DE202014103620U1 (en) | 2014-12-09 |
| ES1132456U (en) | 2014-11-11 |
| FR3009662A3 (en) | 2015-02-13 |
| ITAN20140056U1 (en) | 2016-02-01 |
| ES1132456Y (en) | 2015-03-06 |
| FR3009662B3 (en) | 2015-11-13 |
| RU153983U1 (en) | 2015-08-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |