CN202282862U - Ventilation type loudspeaker magnetic circuit structure - Google Patents
Ventilation type loudspeaker magnetic circuit structure Download PDFInfo
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- CN202282862U CN202282862U CN2011204259642U CN201120425964U CN202282862U CN 202282862 U CN202282862 U CN 202282862U CN 2011204259642 U CN2011204259642 U CN 2011204259642U CN 201120425964 U CN201120425964 U CN 201120425964U CN 202282862 U CN202282862 U CN 202282862U
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- magnetic circuit
- loudspeaker
- hole
- circuit structure
- train wheel
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Abstract
The utility model relates to a ventilation type loudspeaker magnetic circuit structure, comprising a T-shaped iron with a bottom plate and a pole core column, an annular magnet with a middle through hole and an upper clamping plate, wherein the annular magnet and the upper clamping plate are arranged on the bottom plate of the T-shaped iron in turn, the pole core column of the T-shaped iron passes through the middle through hole, thus an annular magnetic circuit gap is formed between the pole core column of the T-shaped iron and the middle through hole of the upper clamping plate, and an air flow channel is arranged on the T-shaped iron and/or the upper clamping plate to communicate the annular magnetic circuit gap with the outside. The air flow channel is arranged on the T-shaped iron and/or the upper clamping plate, the annular magnetic circuit gap is communicated with the outside and the heat amount generated by a voice coil in an operating state is quickly emitted and the heat radiation efficiency of the voice coil is effectively increased. The high heat radiation efficiency of the ventilation type loudspeaker magnetic circuit structure not only increases the work efficiency of the loudspeaker but also prevents permanent heat damage of the voice coil and increases the long-term operation reliability of the loudspeaker.
Description
Technical field
The utility model relates to a kind of loud speaker, especially a kind of aeration type magnetic circuit structure for loudspeaker with performance of ventilating.
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 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 find in the practical application that the radiating efficiency of existing magnetic circuit structure for loudspeaker is lower, this is because the toroid slit is narrow, and air is difficult for flowing, and has therefore hindered distributing of voice coil loudspeaker voice coil heat.Research shows that the low heat emission efficient of existing magnetic circuit structure for loudspeaker is very big to the service behaviour influence of loud speaker, has reduced the operating efficiency of loud speaker on the one hand, makes voice coil loudspeaker voice coil produce permanent fire damage on the other hand, and the reliability of loud speaker long-term work is lower.
The utility model content
The purpose of the utility model provides a kind of aeration type magnetic circuit structure for loudspeaker, effectively improves the radiating efficiency of voice coil loudspeaker voice coil in the magnetic circuit structure for loudspeaker, improves the service behaviour and the functional reliability of loud speaker.
For realizing above-mentioned purpose; The utility model provides a kind of aeration type 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, formation toroid slit between the pole piece post that makes T shape iron and the middle part through hole of train wheel bridge, and said T shape iron and/or train wheel bridge are provided with the air flow passage that said toroid slit is in communication with the outside.
Said air flow passage can be several ventilation slots of offering on the pole piece post surface of said T shape iron.
Said air flow passage also can be several ventilation holes of offering on the said train wheel bridge, and each ventilation hole is communicated with the middle part through hole of train wheel bridge through narrow slit.
Said air flow passage can also be several ventilation holes of offering on several ventilation slots offered on the pole piece post surface of said T shape iron and the said train wheel bridge, and each ventilation hole is communicated with the middle part through hole of train wheel bridge through narrow slit.
On the technique scheme basis, said ventilation slot is offered along the radial direction of the pole piece post of said T shape iron.Said ventilation slot be shaped as rectangle, trapezoidal, triangle or semicircle.The length of said ventilation slot is greater than the thickness of said train wheel bridge.
On the technique scheme basis, said ventilation hole is opened near the edge of middle part through hole of said train wheel bridge.Said ventilation hole be shaped as rectangle, square, circle or oval.Said ventilation hole is a through hole.
The utility model provides a kind of aeration type magnetic circuit structure for loudspeaker; Through on T shape iron and/or train wheel bridge, air flow passage being set; The toroid slit is in communication with the outside, and extraneous cold air gets into the toroid slit through this air flow passage, and the hot-air that carries out after the heat exchange with voice coil loudspeaker voice coil flows to extraneous through this air flow passage; Heat when making voice coil loudspeaker voice coil work distributes fast, has effectively improved the radiating efficiency of voice coil loudspeaker voice coil.The high cooling efficiency of the utility model aeration type magnetic circuit structure for loudspeaker not only can improve the operating efficiency of loud speaker, and has avoided voice coil loudspeaker voice coil to produce permanent fire damage, has improved the reliability of loud speaker long-term work.
Description of drawings
Fig. 1 is the structural representation of prior art magnetic circuit structure for loudspeaker;
Fig. 2 a is the structural representation of the utility model aeration type magnetic circuit structure for loudspeaker first embodiment;
Fig. 2 b is the vertical view of Fig. 2 a;
Fig. 3 a is the structural representation of the utility model aeration type magnetic circuit structure for loudspeaker second embodiment;
Fig. 3 b is the vertical view of Fig. 3 a;
Fig. 4 a is the structural representation of the utility model aeration type magnetic circuit structure for loudspeaker the 3rd embodiment;
Fig. 4 b is the vertical view of Fig. 4 a.
Description of reference numerals:
1-T shape iron; The 2-toroidal coils; The 3-train wheel bridge;
The 4-voice coil loudspeaker voice coil; The 11-ventilation slot; The 31-ventilation hole.
Embodiment
To the technological deficiency of existing magnetic circuit structure for loudspeaker low heat emission efficient, the utility model provides a kind of aeration type magnetic circuit structure for loudspeaker, through the air flow passage that setting is in communication with the outside the toroid slit, effectively improves the radiating efficiency of voice coil loudspeaker voice coil.In the practical application, the utility model air flow passage can be the ventilation slot structure that is opened on the T shape iron pole piece post, also can be the ventilation hole structure that is opened on the train wheel bridge, can also be the combining structure of ventilation slot and ventilation hole.
Through specific embodiment, the technical scheme of the utility model is done further detailed description below.
First embodiment
Fig. 2 a is the structural representation of the utility model aeration type magnetic circuit structure for loudspeaker first embodiment, and Fig. 2 b is the vertical view of Fig. 2 a.Shown in Fig. 2 a and Fig. 2 b; The agent structure of present embodiment aeration type 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.The air flow passage of present embodiment is arranged on the T shape iron 1; Be specially several ventilation slots 11 of radially offering on the pole piece post surface of T shape iron 1; Several ventilation slots 11 are as the air flow passage between the toroid slit and the external world; Extraneous cold air gets into the toroid slit through this air flow passage; Carry out hot-air after the heat exchange with voice coil loudspeaker voice coil 4 and flow to extraneously through this air flow passage, the heat when making voice coil loudspeaker voice coil work distributes fast, has effectively improved the radiating efficiency of voice coil loudspeaker voice coil.
During actual the use, the cross sectional shape of ventilation slot 11 can be rectangle, trapezoidal, triangle, semicircle or Else Rule shape, and its length is greater than the thickness of train wheel bridge 3, and its width and quantity can design according to actual needs.
Second embodiment
Fig. 3 a is the structural representation of the utility model aeration type magnetic circuit structure for loudspeaker second embodiment, and Fig. 3 b is the vertical view of Fig. 3 a.Shown in Fig. 3 a and Fig. 3 b; The agent structure of present embodiment aeration type 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.The air flow passage of present embodiment is arranged on the train wheel bridge 3; Be specially near offer the through hole edge, middle part of train wheel bridge 3 several ventilation holes 31; Each ventilation hole 31 is communicated with the middle part through hole through narrow slit; Several ventilation holes 31 are as the air flow passage between the toroid slit and the external world, and extraneous cold air gets into the toroid slit through this air flow passage, and the hot-air that carries out after the heat exchange with voice coil loudspeaker voice coil 4 flows to extraneous through this air flow passage; Heat when making voice coil loudspeaker voice coil work distributes fast, has effectively improved the radiating efficiency of voice coil loudspeaker voice coil.
During actual the use, ventilation hole 31 is a through hole, and its shape can be rectangle, square, circle, ellipse or Else Rule shape, and its hole area and quantity can design according to actual needs.
The 3rd embodiment
Fig. 4 a is the structural representation of the utility model aeration type magnetic circuit structure for loudspeaker the 3rd embodiment, and Fig. 4 b is the vertical view of Fig. 4 a.Shown in Fig. 4 a and Fig. 4 b, present embodiment aeration type magnetic circuit structure for loudspeaker is the combining structure of aforementioned first and second embodiment.Particularly; The air flow passage of present embodiment is separately positioned on T shape iron 1 and the train wheel bridge 3; Be specially near offer the through hole edge, middle part of several ventilation slots 11 radially offered on the pole piece post surface of T shape iron 1 and train wheel bridge 3 several ventilation holes 31, each ventilation hole 31 is communicated with the middle part through hole through narrow slit.Several ventilation slots 11 and ventilation hole 31 are as the air flow passage between the toroid slit and the external world; Extraneous cold air gets into the toroid slit through this air flow passage; The hot-air that carries out after the heat exchange with voice coil loudspeaker voice coil 4 flows to extraneous through this air flow passage; Heat when making voice coil loudspeaker voice coil work distributes fast, has effectively improved the radiating efficiency of voice coil loudspeaker voice coil.
The high cooling efficiency of the utility model aeration type magnetic circuit structure for loudspeaker not only can improve the operating efficiency of loud speaker, and has avoided voice coil loudspeaker voice coil to produce permanent fire damage, has improved the reliability of loud speaker long-term work.
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. aeration type 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, formation toroid slit between the pole piece post that makes T shape iron and the middle part through hole of train wheel bridge; It is characterized in that said T shape iron and/or train wheel bridge are provided with the air flow passage that said toroid slit is in communication with the outside.
2. aeration type magnetic circuit structure for loudspeaker as claimed in claim 1 is characterized in that, said air flow passage is several ventilation slots of offering on the pole piece post surface of said T shape iron.
3. aeration type magnetic circuit structure for loudspeaker as claimed in claim 1 is characterized in that, said air flow passage is several ventilation holes of offering on the said train wheel bridge, and each ventilation hole is communicated with the middle part through hole of train wheel bridge through narrow slit.
4. aeration type magnetic circuit structure for loudspeaker as claimed in claim 1; It is characterized in that; Said air flow passage is several ventilation holes of offering on several ventilation slots offered on the pole piece post surface of said T shape iron and the said train wheel bridge, and each ventilation hole is communicated with the middle part through hole of train wheel bridge through narrow slit.
5. like claim 2 or 4 described aeration type magnetic circuit structure for loudspeaker, it is characterized in that said ventilation slot is offered along the radial direction of the pole piece post of said T shape iron.
6. like claim 2 or 4 described aeration type magnetic circuit structure for loudspeaker, it is characterized in that, said ventilation slot be shaped as rectangle, trapezoidal, triangle or semicircle.
7. like claim 2 or 4 described aeration type magnetic circuit structure for loudspeaker, it is characterized in that the length of said ventilation slot is greater than the thickness of said train wheel bridge.
8. like claim 3 or 4 described aeration type magnetic circuit structure for loudspeaker, it is characterized in that said ventilation hole is opened near the edge of middle part through hole of said train wheel bridge.
9. like claim 3 or 4 described aeration type magnetic circuit structure for loudspeaker, it is characterized in that, said ventilation hole be shaped as rectangle, square, circle or oval.
10. like claim 3 or 4 described aeration type magnetic circuit structure for loudspeaker, it is characterized in that said ventilation hole is a through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204259642U CN202282862U (en) | 2011-11-01 | 2011-11-01 | Ventilation type loudspeaker magnetic circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204259642U CN202282862U (en) | 2011-11-01 | 2011-11-01 | Ventilation type loudspeaker magnetic circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202282862U true CN202282862U (en) | 2012-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204259642U Expired - Fee Related CN202282862U (en) | 2011-11-01 | 2011-11-01 | Ventilation type loudspeaker magnetic circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202282862U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104105039A (en) * | 2014-08-12 | 2014-10-15 | 胡达广 | High-efficiency broadband loudspeaker |
| CN105282667A (en) * | 2015-09-23 | 2016-01-27 | 宁波东源音响器材有限公司 | Suspensible loudspeaker |
| CN110602610A (en) * | 2019-09-20 | 2019-12-20 | 宁波东源音响器材有限公司 | Subwoofer with low power compression |
-
2011
- 2011-11-01 CN CN2011204259642U patent/CN202282862U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104105039A (en) * | 2014-08-12 | 2014-10-15 | 胡达广 | High-efficiency broadband loudspeaker |
| CN105282667A (en) * | 2015-09-23 | 2016-01-27 | 宁波东源音响器材有限公司 | Suspensible loudspeaker |
| CN105282667B (en) * | 2015-09-23 | 2018-06-05 | 宁波东源音响器材有限公司 | The loudspeaker of Suspensible |
| CN110602610A (en) * | 2019-09-20 | 2019-12-20 | 宁波东源音响器材有限公司 | Subwoofer with low power compression |
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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 |