CN202282858U - Lightweight loudspeaker magnetic circuit structure - Google Patents
Lightweight loudspeaker magnetic circuit structure Download PDFInfo
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- CN202282858U CN202282858U CN2011204256362U CN201120425636U CN202282858U CN 202282858 U CN202282858 U CN 202282858U CN 2011204256362 U CN2011204256362 U CN 2011204256362U CN 201120425636 U CN201120425636 U CN 201120425636U CN 202282858 U CN202282858 U CN 202282858U
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- magnetic circuit
- circuit structure
- loudspeaker
- hole
- lightening
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Abstract
The utility model relates to a lightweight loudspeaker magnetic circuit structure, comprising a T-shaped iron possessing a bottom plate and a pole core column, an annular magnet possessing a central through hole and an upper clamping plate. The annular magnet and the upper clamping plate are arranged on the bottom plate of the T-shaped iron orderly, the pole core column of the T-shaped iron penetrates and is arranged in the central through hole, and the T-shaped iron, the annular magnet and/or the upper clamping plate is equipped with lightening holes. According to the utility model, by arranging the lightening holes on the magnetic circuit structure, the magnetic circuit weight is reduced effectively under the prerequisite of guaranteeing enough magnetic field; when a large power loudspeaker is designed, by utilizing the lightweight loudspeaker magnetic circuit structure provided by the utility model, magnetic circuit systems of various structures can be made according to different performances and appearance requirements, so that the lightweight loudspeaker magnetic circuit structure has the characteristics of having enough surface area to guarantee the thermal capacity needed by heat radiation, having enough magnet thickness to guarantee a voice coil vibration stroke, and being light to the largest degree under the prerequisite of guaranteeing enough magnetic field.
Description
Technical field
The utility model relates to a kind of loud speaker, especially a kind of lightweight magnetic circuit structure for loudspeaker.
Background technology
The operation principle of loud speaker is to combine with vibrating device with magnetic circuit device, and the magnetic line of force of input alternating current cutting magnetic circuit device drives the vibrating device vibration, produces sound through compression or expansion air.Fig. 1 is the structural representation of prior art magnetic circuit structure for loudspeaker.As shown in Figure 1; The agent structure of prior art magnetic circuit structure for loudspeaker comprises T shape iron 1, toroidal coils 2 and train wheel bridge 3; T shape iron 1 comprises base plate and the pole piece post that is arranged on the base plate middle part, and the toroidal coils 2 with middle part through hole is successively set on the base plate of T shape iron 1 with train wheel bridge 3, and the pole piece post of T shape iron 1 is located in the through hole of middle part; Make between the middle part through hole of pole piece post and train wheel bridge 3 of T shape iron 1 and form the toroid slit, voice coil loudspeaker voice coil 4 is arranged in this toroid slit.Voice coil loudspeaker voice coil 4 through AC signal moves in the magnetic field in toroid slit, makes the vibrating diaphragm vibration that links to each other with voice coil loudspeaker voice coil 4, through compression or expansion air sound wave is sent out.
The loud speaker of existing structure is when the energising sounding, and nearly all power all converts heat energy in magnetic circuit structure for loudspeaker, and wherein electric current directly causes the temperature of voice coil loudspeaker voice coil constantly to raise through the heat that voice coil loudspeaker voice coil produces.Research shows; Voice coil temperature raises very big to the service behaviour influence of loud speaker, has reduced the operating efficiency of loud speaker on the one hand, and loud speaker can only reach 5% efficient; Make voice coil loudspeaker voice coil produce permanent fire damage on the other hand, the reliability of loud speaker long-term work is lower.
At present; Electric current mainly distributes through the cross-ventilation in the toroid slit and to T shape iron and train wheel bridge radiation through the heat that voice coil loudspeaker voice coil produces; But because the toroid slit is narrow, radiating efficiency is lower, and therefore coming distribute heat through T shape iron and train wheel bridge is the approach that mainly dispels the heat.In order to guarantee the heat radiation of T shape iron and train wheel bridge, T shape iron and train wheel bridge need have certain volume and surface area usually, make it have enough thermal capacity.For supersound projector,, require the volume of T shape iron and train wheel bridge and surface area bigger because the heat that need distribute is big.Simultaneously, supersound projector has very big stroke, adopts long voice coil more, and magnet also need have enough thickness to guarantee the stroke of voice coil loudspeaker voice coil vibration.Therefore, the size and the weight of existing magnetic structure are all bigger.
Find in actual the use that there are the superfluous problem in magnetic field in large scale in the existing magnetic circuit structure for loudspeaker and weight, cause the Q value of loud speaker to be lower than desired value.Increase the solution that the middle part through hole reduces magnetic circuit weight though prior art has proposed a kind of the employing, this solution has reduced magnetic circuit efficient.
The utility model content
The purpose of the utility model provides a kind of lightweight magnetic circuit structure for loudspeaker, is guaranteeing effectively to reduce the weight of magnetic circuit under the prerequisite that enough use in magnetic field.
For realizing above-mentioned purpose; The utility model provides a kind of lightweight magnetic circuit structure for loudspeaker; Comprise the T shape iron with base plate and pole piece post, toroidal coils and train wheel bridge with middle part through hole; Said toroidal coils and train wheel bridge are successively set on the base plate of T shape iron, and the pole piece post of T shape iron is located in the through hole of middle part, and said T shape iron, toroidal coils and/or train wheel bridge are provided with lightening hole.
Several first lightening holes that said lightening hole is offered on can the base plate for said T shape iron.Said lightening hole also can be several second lightening holes of offering on the said toroidal coils.Said lightening hole can also be several the 3rd lightening holes of offering on the said train wheel bridge.
Further; Said lightening hole is several second lightening holes of offering on several first lightening holes offered on the base plate of said T shape iron and the toroidal coils; Or said lightening hole is several the 3rd lightening holes of offering on several first lightening holes offered on the base plate of said T shape iron and the train wheel bridge; Or said lightening hole is several the 3rd lightening holes of offering on several second lightening holes offered on the said toroidal coils and the train wheel bridge, or said lightening hole is several the 3rd lightening holes of offering on several second lightening holes offered on several first lightening holes of offering on the base plate of said T shape iron, the toroidal coils and the train wheel bridge.
On the technique scheme basis, said lightening hole is a through hole.
On the technique scheme basis, the shape of said lightening hole is rectangle, square, circle or oval.
The utility model provides a kind of lightweight magnetic circuit structure for loudspeaker, through lightening hole is set on magnetic structure, is guaranteeing to effectively reduce the weight of magnetic circuit under the prerequisite that enough use in magnetic field.When the designing high-power loud speaker; The lightweight magnetic circuit structure for loudspeaker that utilizes the utility model to provide; Can make the magnetic circuit system of various structures according to different performances and appearance requirement; Both had the thermal capacity that enough surface areas guarantee that heat radiation is required, had the stroke that enough magnet thicknesses guarantee the voice coil loudspeaker voice coil vibration again, and also had in assurance magnetic field and enough use light-weighted to greatest extent characteristics under the prerequisite.
Description of drawings
Fig. 1 is the structural representation of prior art magnetic circuit structure for loudspeaker;
Fig. 2 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker first embodiment;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker second embodiment;
Fig. 5 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker the 3rd embodiment;
Fig. 6 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker the 4th embodiment;
Fig. 7 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker the 5th embodiment;
Fig. 8 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker the 6th embodiment;
Fig. 9 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker the 7th embodiment.
Description of reference numerals:
1-T shape iron; The 2-toroidal coils; The 3-train wheel bridge;
The 4-voice coil loudspeaker voice coil; 11-first lightening hole; 21-second lightening hole;
31-the 3rd lightening hole.
Embodiment
Size and the bigger technological deficiency of weight ratio to existing magnetic structure; The utility model provides a kind of lightweight magnetic circuit structure for loudspeaker; Through lightening hole is set, guaranteeing effectively to reduce the weight of magnetic circuit under the prerequisite that enough use in magnetic field on magnetic structure.In the practical application, the utility model lightening hole can be opened on the T shape iron, also can be opened on the train wheel bridge, can also be opened on the toroidal coils, or three's combination in any.
Through specific embodiment, the technical scheme of the utility model is done further detailed description below.
First embodiment
Fig. 2 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker first embodiment, and Fig. 3 is the vertical view of Fig. 2.As shown in Figures 2 and 3; The agent structure of present embodiment lightweight magnetic circuit structure for loudspeaker comprises T shape iron 1, toroidal coils 2 and train wheel bridge 3; T shape iron 1 comprises that base plate is the pole piece post with being arranged on the base plate middle part; Toroidal coils 2 is provided with the middle part through hole with train wheel bridge 3, and toroidal coils 2 is successively set on the base plate of T shape iron 1 with train wheel bridge 3, and the pole piece post of T shape iron 1 is located in the through hole of middle part; Make between the middle part through hole of pole piece post and train wheel bridge 3 of T shape iron 1 and form the toroid slit, voice coil loudspeaker voice coil 4 is arranged in this toroid slit.The lightening hole of present embodiment is arranged on the T shape iron 1, is specially several first lightening holes 11 of offering on T shape iron 1 base plate.First lightening hole 11 is a through hole, can in the annular region of base plate, evenly offer.Through on T shape iron 1, offering several first lightening holes 11, make the effective volume of T shape iron 1 reduce, the weight of T shape iron 1 effectively reduces, and has realized the magnetic structure lightweight.
During actual the use, the shape of first lightening hole 11 can be rectangle, square, circle, ellipse or Else Rule shape, and its hole area and quantity can guarantee under the prerequisite that enough use in magnetic field design according to actual needs.
Second embodiment
Fig. 4 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker second embodiment.As shown in Figure 4; The agent structure of present embodiment lightweight magnetic circuit structure for loudspeaker comprises T shape iron 1, toroidal coils 2 and train wheel bridge 3; T shape iron 1 comprises that base plate is the pole piece post with being arranged on the base plate middle part; Toroidal coils 2 is provided with the middle part through hole with train wheel bridge 3, and toroidal coils 2 is successively set on the base plate of T shape iron 1 with train wheel bridge 3, and the pole piece post of T shape iron 1 is located in the through hole of middle part; Make between the middle part through hole of pole piece post and train wheel bridge 3 of T shape iron 1 and form the toroid slit, voice coil loudspeaker voice coil 4 is arranged in this toroid slit.The lightening hole of present embodiment is arranged on the toroidal coils 2, is specially several second lightening holes 21 of offering on the toroidal coils 2.Second lightening hole 21 is a through hole, can in the annular region of toroidal coils 2, evenly offer.Through on toroidal coils 2, offering several second lightening holes 21, make the effective volume of toroidal coils 2 reduce, the weight of toroidal coils 2 effectively reduces, and has realized the magnetic structure lightweight.
During actual the use, the shape of second lightening hole 21 can be rectangle, square, circle, ellipse or Else Rule shape, and its hole area and quantity can guarantee under the prerequisite that enough use in magnetic field design according to actual needs.
The 3rd embodiment
Fig. 5 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker the 3rd embodiment.As shown in Figure 5; The agent structure of present embodiment lightweight magnetic circuit structure for loudspeaker comprises T shape iron 1, toroidal coils 2 and train wheel bridge 3; T shape iron 1 comprises that base plate is the pole piece post with being arranged on the base plate middle part; Toroidal coils 2 is provided with the middle part through hole with train wheel bridge 3, and toroidal coils 2 is successively set on the base plate of T shape iron 1 with train wheel bridge 3, and the pole piece post of T shape iron 1 is located in the through hole of middle part; Make between the middle part through hole of pole piece post and train wheel bridge 3 of T shape iron 1 and form the toroid slit, voice coil loudspeaker voice coil 4 is arranged in this toroid slit.The lightening hole of present embodiment is arranged on the train wheel bridge 3, is specially several the 3rd lightening holes 31 of offering on the train wheel bridge 3.The 3rd lightening hole 31 is a through hole, can in the annular region of train wheel bridge 3, evenly offer.Through on train wheel bridge 3, offering several the 3rd lightening holes 31, make the effective volume of train wheel bridge 3 reduce, the weight of train wheel bridge 3 effectively reduces, and has realized the magnetic structure lightweight.
During actual the use, the shape of the 3rd lightening hole 31 can be rectangle, square, circle, ellipse or Else Rule shape, and its hole area and quantity can guarantee under the prerequisite that enough use in magnetic field design according to actual needs.
The 4th embodiment
Fig. 6 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker the 4th embodiment.As shown in Figure 6, present embodiment lightweight magnetic circuit structure for loudspeaker is the combining structure of aforementioned first and second embodiment.Particularly, the lightening hole of present embodiment is separately positioned on T shape iron 1 and the toroidal coils 2, is specially several second lightening holes 21 of offering on several first lightening holes 11 of offering on T shape iron 1 base plate and the toroidal coils 2.Through on T shape iron 1 and toroidal coils 2, offering several first lightening holes 11 and second lightening hole 21, make the effective volume of T shape iron 1 and toroidal coils 2 reduce, the weight of T shape iron 1 and toroidal coils 2 effectively reduces, and has realized the magnetic structure lightweight.
The 5th embodiment
Fig. 7 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker the 5th embodiment.As shown in Figure 7, present embodiment lightweight magnetic circuit structure for loudspeaker is aforementioned first and the combining structure of the 3rd embodiment.Particularly, the lightening hole of present embodiment is separately positioned on T shape iron 1 and the train wheel bridge 3, is specially several the 3rd lightening holes 31 of offering on several first lightening holes 11 of offering on T shape iron 1 base plate and the train wheel bridge 3.Through on T shape iron 1 and train wheel bridge 3, offering several first lightening holes 11 and the 3rd lightening hole 31, make the effective volume of T shape iron 1 and train wheel bridge 3 reduce, the weight of T shape iron 1 and train wheel bridge 3 effectively reduces, and has realized the magnetic structure lightweight.
The 6th embodiment
Fig. 8 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker the 6th embodiment.As shown in Figure 8, present embodiment lightweight magnetic circuit structure for loudspeaker is aforementioned second and the combining structure of the 3rd embodiment.Particularly, the lightening hole of present embodiment is separately positioned on toroidal coils 2 and the train wheel bridge 3, is specially several the 3rd lightening holes 31 of offering on several second lightening holes 21 of offering on the toroidal coils 2 and the train wheel bridge 3.Through on toroidal coils 2 and train wheel bridge 3, offering several second lightening holes 21 and the 3rd lightening hole 31, make the effective volume of toroidal coils 2 and train wheel bridge 3 reduce, the weight of toroidal coils 2 and train wheel bridge 3 effectively reduces, and has realized the magnetic structure lightweight.
The 7th embodiment
Fig. 9 is the structural representation of the utility model lightweight magnetic circuit structure for loudspeaker the 7th embodiment.As shown in Figure 9, present embodiment lightweight magnetic circuit structure for loudspeaker be aforementioned first, second with the combining structure of the 3rd embodiment.Particularly; The lightening hole of present embodiment is separately positioned on T shape iron 1, toroidal coils 2 and the train wheel bridge 3, is specially several the 3rd lightening holes 31 of offering on several second lightening holes 21 offered on several first lightening holes 11 of offering on T shape iron 1 base plate, the toroidal coils 2 and the train wheel bridge 3.Through on T shape iron 1, toroidal coils 2 and train wheel bridge 3, offering several first lightening holes 11, second lightening hole 21 and the 3rd lightening hole 31; Make the effective volume of T shape iron 1, toroidal coils 2 and train wheel bridge 3 reduce; The weight of T shape iron 1, toroidal coils 2 and train wheel bridge 3 effectively reduces, and has realized the maximum lightweight of magnetic structure.
When the designing high-power loud speaker; The lightweight magnetic circuit structure for loudspeaker that utilizes the utility model to provide; Can make the magnetic circuit system of various structures according to different performances and appearance requirement; Both had the thermal capacity that enough surface areas guarantee that heat radiation is required, had the stroke that enough magnet thicknesses guarantee the voice coil loudspeaker voice coil vibration again, and also had in assurance magnetic field and enough use light-weighted to greatest extent characteristics under the prerequisite.
Above-described embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the embodiment of the utility model; And be not used in the protection range that limits the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (10)
1. lightweight magnetic circuit structure for loudspeaker; Comprise the T shape iron with base plate and pole piece post, toroidal coils and train wheel bridge with middle part through hole; Said toroidal coils and train wheel bridge are successively set on the base plate of T shape iron; The pole piece post of T shape iron is located in the through hole of middle part, it is characterized in that said T shape iron, toroidal coils and/or train wheel bridge are provided with lightening hole.
2. lightweight magnetic circuit structure for loudspeaker as claimed in claim 1 is characterized in that, said lightening hole is several first lightening holes of offering on the base plate of said T shape iron.
3. lightweight magnetic circuit structure for loudspeaker as claimed in claim 1 is characterized in that, said lightening hole is several second lightening holes of offering on the said toroidal coils.
4. lightweight magnetic circuit structure for loudspeaker as claimed in claim 1 is characterized in that, said lightening hole is several the 3rd lightening holes of offering on the said train wheel bridge.
5. lightweight magnetic circuit structure for loudspeaker as claimed in claim 1 is characterized in that, said lightening hole is several second lightening holes of offering on several first lightening holes offered on the base plate of said T shape iron and the toroidal coils.
6. lightweight magnetic circuit structure for loudspeaker as claimed in claim 1 is characterized in that, said lightening hole is several the 3rd lightening holes of offering on several first lightening holes offered on the base plate of said T shape iron and the train wheel bridge.
7. lightweight magnetic circuit structure for loudspeaker as claimed in claim 1 is characterized in that, said lightening hole is several the 3rd lightening holes of offering on several second lightening holes offered on the said toroidal coils and the train wheel bridge.
8. lightweight magnetic circuit structure for loudspeaker as claimed in claim 1; It is characterized in that said lightening hole is several the 3rd lightening holes of offering on several second lightening holes offered on several first lightening holes of offering on the base plate of said T shape iron, the toroidal coils and the train wheel bridge.
9. like the arbitrary described lightweight magnetic circuit structure for loudspeaker of claim 1～8, it is characterized in that said lightening hole is a through hole.
10. like the arbitrary described lightweight magnetic circuit structure for loudspeaker of claim 1～8, it is characterized in that the shape of said lightening hole is rectangle, square, circle or oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204256362U CN202282858U (en) | 2011-11-01 | 2011-11-01 | Lightweight loudspeaker magnetic circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204256362U CN202282858U (en) | 2011-11-01 | 2011-11-01 | Lightweight loudspeaker magnetic circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202282858U true CN202282858U (en) | 2012-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204256362U Expired - Fee Related CN202282858U (en) | 2011-11-01 | 2011-11-01 | Lightweight loudspeaker magnetic circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202282858U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9270797B2 (en) | 2013-02-27 | 2016-02-23 | Nokia Technologies Oy | Reducing inductive heating |
| US9325183B2 (en) | 2012-12-21 | 2016-04-26 | Nokia Technologies Oy | Reducing inductive heating |
| CN111726734A (en) * | 2020-06-18 | 2020-09-29 | 江西台德智慧科技有限公司 | Heat dissipation type speaker magnetic circuit, speaker and intelligent audio amplifier |
-
2011
- 2011-11-01 CN CN2011204256362U patent/CN202282858U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9325183B2 (en) | 2012-12-21 | 2016-04-26 | Nokia Technologies Oy | Reducing inductive heating |
| US9270797B2 (en) | 2013-02-27 | 2016-02-23 | Nokia Technologies Oy | Reducing inductive heating |
| CN111726734A (en) * | 2020-06-18 | 2020-09-29 | 江西台德智慧科技有限公司 | Heat dissipation type speaker magnetic circuit, speaker and intelligent audio amplifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20131101 |