CN1316854C - Bugle structure with magnetic element fixed on drum membrane - Google Patents
Bugle structure with magnetic element fixed on drum membrane Download PDFInfo
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- CN1316854C CN1316854C CNB031020364A CN03102036A CN1316854C CN 1316854 C CN1316854 C CN 1316854C CN B031020364 A CNB031020364 A CN B031020364A CN 03102036 A CN03102036 A CN 03102036A CN 1316854 C CN1316854 C CN 1316854C
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Abstract
The present invention discloses a bugle structure with a magnetic element fixed on a drum membrane. A drum membrane is fixedly arranged on one side surface of a frame body of a bugle along the circumference, a resonant cavity is formed between the drum membrane and the frame body, and a magnetic element is fixedly arranged at the center position point of the drum membrane along the resonant cavity direction, so when a coil group arranged on the center position of the inner side of the frame body is excitated, magnetic change is produced in the center of the resonant cavity, the magnetic element move up and down in the positions of the center or the circumference of the coil group because of a suction and repulsion effect formed by the isomagnetic change, then, the drum membrane vibrates and produces sound. Because of the structural design, the thickness of the bugle is greatly reduced, the assembly structure of the bugle is simplified, the cost of the bugle is reduced, the oscillation amplitude travel of the drum membrane is effectively increased, and the bass characteristics and the horsepower of the bugle are greatly improved in order to reduce the weight of the bugle.
Description
Technical field
The present invention relates to a kind of horn structure, especially refer to a kind of magnetic element is fixedly arranged on horn structure on the eardrum, this structure can be in a coil groups of loudspeaker by excitatory and when producing the magnetic line of force and changing, make this magnetic element in the space that the central authorities or the periphery of this coil are reserved, produce vibration, and the drive eardrum is sounded.
Background technology
Referring to Fig. 1, traditional loudspeaker 10 structures, mainly comprise a chase 11, the middle position of these chase 11 1 sides forms the resonant cavity 12 of a depression, its periphery then is covered with an eardrum 13, this eardrum 13 is towards the direction depression of this resonant cavity 12, and its central fixed-site is in an end of a movable sleeve 14, the outer rim of holding in addition of this movable sleeve 14 then is arranged with one group of coil 15, and be positioned on the movable sleeve 14 between this eardrum 13 and coil 15 cohesive ends, then be equipped with one and be wavy damping membrane 16, this damping membrane 16 also radially extends, and is connected to the appropriate position that this chase 11 is positioned at resonant cavity 12.The side in addition of this chase 11 is provided with an opening 17, these opening 17 peripheries are installed with a holder 18, these holder 18 1 ends are provided with a through hole 19 corresponding to these opening 17 positions, the aperture of this opening 17 and through hole 19 just can make an end that is arranged with coil 15 on the movable sleeve 14, penetrate in this holder 18, the end in addition of this holder 18 is provided with another through hole 20, this another through hole 20 just can make the newel 211 of the iron core 21 of a tee-section run through and fix wherein, and just can penetrate an end internal diameter that is arranged with coil 15 on this movable sleeve 14, the periphery of this holder 18 then is installed with a permanent magnet 22.In traditional loudspeaker 10 structures of this kind, when electric current is flowed through this coil 15, its excitatory generation galvanomagnetic effect of military order, the magnetic line of force that it produced, the magnetic line of force that will be produced with the permanent magnet 22 that its periphery sets firmly forms the effect of inhaling mutually and repelling each other, so along with the size of current of this coil 15 of input and the variation of direction, therefore this movable sleeve 14 that is arranged with coil 15 will produce vibration up and down, and then this eardrum 13 of interlock, and loudspeaker 10 are sounded.
Yet, because the holder 18 of the traditional loudspeaker 10 of this kind, unshakable in one's determination 21 and the weight and the volume of part such as permanent magnet 22 quite big, and be the side in addition that is fixedly mounted on this chase 11 corresponding to this eardrum 13, so that its thickness can't effectively dwindle all the time in design.In addition, owing to be arranged with an end of coil 15 on its movable sleeve 14, be to penetrate in this holder 18, and be positioned at the limited space of 22 of the newel 211 of this iron core 21 and permanent magnets, so degree of difficulty when not only increasing parts on foot, it is proper whether its pore size is controlled, and also directly influences the quality that loudspeaker 10 are made quality.In addition, be fixedly arranged on the iron core 21 of its holder 18 bottoms, also limited the vibratility adjustment of this movable sleeve 14, so when loudspeaker 10 are in the output of high-power low frequency, an end that is arranged with coil 15 on this movable sleeve 14 easily clashes into unshakable in one's determination 21, make this movable sleeve 14 deform, cause the problem of the permanent distortion of output audio.These problems not only cause the volume of traditional loudspeaker 10 significantly to dwindle, and on the quality and quantity of its output audio, form the design obstacle that is difficult to break through.
In view of this, the inventor is once in its all U.S. the 6th, 415, in No. 037 patent of invention, design a kind of horn structure of novelty, referring to Fig. 2, this U.S.'s patent of invention mainly is in a side of the frame body 31 of loudspeaker 30, set firmly an eardrum 32 along its periphery, 32 in this frame body 31 and this eardrum form a resonant cavity 33, and the inboard central authorities of this frame body 31 also are installed with a coil 34, so, when this coil 34 by excitatory, will produce the magnetic lines of force in this resonant cavity 33 central authorities and change, and make on this eardrum 32 corresponding to the set magnetic element 35 of the middle position of this coil 34, because of effect is scolded in the formed suction of the variation of this isodynamic line, up-down vibration, and then make this eardrum produce vibration, sound.
According to this U.S. the 6th, 415, No. 037 designed loudspeaker 30 of patent of invention, owing to be the middle position that this magnetic element 35 directly or indirectly is fixed in this eardrum 32, so effective shared spaces of part such as the holder 18 on economization traditional loudspeaker 10 shown in Figure 1, iron core 21 and permanent magnet 22, significantly dwindle the thickness of loudspeaker, and alleviate its weight.In addition, because this U.S. the 6th, 415, in the designed loudspeaker 30 of No. 037 patent of invention, this coil 34 is the middle positions that are fixedly installed on the frame body 31 of these loudspeaker 30 corresponding to these eardrum 32 medial surfaces, so at this coil 34 when excitatory, can directly produce to inhale and scold effect this magnetic element 35, and then drive this eardrum, sound, so can effectively simplify the package assembly and the cost of loudspeaker, increase the amplitude stroke of this eardrum, avoid distortion, and significantly promote the bass power to be obeyed of loudspeaker, efficiently solve the obstacle that traditional loudspeaker are difficult to break through in design.
Yet the 6th, 415, No. 037 patent of invention of this U.S. that aforementioned inventor is all still has some most perfect parts in design, and the inventor works out a kind of magnetic element to be fixedly arranged on horn structure on the eardrum in addition.
Summary of the invention
A purpose of the present invention provides and a kind of magnetic element is fixedly arranged on horn structure on the eardrum, and it is the shared spaces of part such as economization tradition loudspeaker upper fixed seat, iron core and permanent magnet effectively, significantly dwindle the thickness of loudspeaker.
Another object of the present invention provides and a kind of magnetic element is fixedly arranged on horn structure on the eardrum, the shift phenomenon that it is taken place in the time of not only can avoiding being actively set on up-down vibration fully, and can effectively increase the amplitude stroke and the stability of this eardrum, avoid distortion, with power, tonequality and the volume that significantly promotes loudspeaker.
Another purpose of the present invention provides a kind of magnetic element is fixedly arranged on horn structure on the eardrum, but its mat is set up an iron core at the peripheral position of this coil groups, with in this coil groups when excitatory, effectively increase the density of line of magnetic force that it is produced in resonant cavity central authorities, significantly to promote the power of loudspeaker.
Technical scheme of the present invention is as follows: a kind of magnetic element is fixedly arranged on horn structure on the eardrum, comprises:
One frame body, the middle position of this frame body one side forms the resonant cavity of a depression, and its periphery then pastes and is fixed with an eardrum, and this eardrum extends towards the direction of this resonant cavity;
One newel, this newel are fixedly arranged on the middle position that this frame body is positioned at this resonant cavity bottom;
One coil groups, this coil groups is sheathed to be fixed on this newel;
One magnetic element, one end of this magnetic element is fixedly arranged on the middle position of this eardrum, this magnetic element is provided with a through hole towards an end middle position of this resonant cavity bottom, the aperture of this through hole is slightly larger than the external diameter of this coil groups, make the other end of this magnetic element just can see through this through hole, be set in versatilely on this coil groups.
This magnetic element can be the permanent magnet of a high magnetic, and this permanent magnet one end is directly fixed on the middle position of this eardrum, and its other end then sees through this set through hole of its central authorities, is set in versatilely on this coil groups.
This magnetic element comprises:
One movable sleeve, this movable sleeve are hollow sleeves, and the one end is fixed in the middle position of this eardrum;
One permanent magnet, this permanent magnet is connected to the other end of this movable sleeve, and this this set through hole of permanent magnet central authorities is set on this coil groups just movably.
Be adjacent to the position of this eardrum on this magnetic element, be provided with one and be wavy damping membrane, this damping membrane also radially extends, and is connected to the appropriate position that this frame body is positioned at this resonant cavity.
In the position of this contiguous this coil groups in resonant cavity bottom, can set up another coil groups, the internal diameter of this another coil groups is greater than the external diameter of this coil groups, keep a predetermined gap to each other, to make this magnetic element be subjected to these coil excitations, when producing up-down vibration, just removable in this gap.
Provided by the present inventionly a kind of magnetic element is fixedly arranged on horn structure on the eardrum, comprises:
One frame body, the middle position of this frame body one side forms the resonant cavity of a depression, its periphery then pastes and is fixed with an eardrum, and this eardrum extends towards the direction of this resonant cavity, and the bottom center position that this frame body is positioned at this resonant cavity is provided with a central through hole;
One magnetic element, an end of this magnetic element is fixedly arranged on the middle position of this eardrum;
One coil groups, this coil groups is fixedly arranged on the side of this central authorities' through hole inner edge surface to this resonant cavity, this coil groups middle position also is provided with another through hole, the aperture of this another through hole is slightly larger than the external diameter of this magnetic element, and the other end of this magnetic element just can move up and down in this another through hole.
This magnetic element can be the permanent magnet of a high magnetic, and this permanent magnet one end is directly fixed on the middle position of this eardrum, and its other end then is arranged in this set another through hole of these coil groups central authorities movably.
This magnetic element comprises:
One movable sleeve, this movable sleeve are hollow sleeves, and the one end is fixed in the middle position of this eardrum;
One permanent magnet, this permanent magnet is connected to the other end of this movable sleeve, and this permanent magnet is arranged in this set another through hole of these coil groups central authorities just movably.
The position of contiguous this eardrum is provided with one and is wavy damping membrane on this magnetic element, and this damping membrane also radially extends, and is connected to the appropriate position that this frame body is positioned at this resonant cavity.
This frame body is positioned at the outer rim of this set central authorities' through hole of this resonant cavity root edge, other is provided with one and is wavy auxiliary damping membrane, and this magnetic element is on an end of this resonant cavity root edge, then set up a connecting rod, the other end of this connecting rod can pass this this set another through hole of coil central authorities, and the middle position of this auxiliary damping membrane that is connected to.
This this set coil groups outer rim of resonant cavity bottom can be set up an iron core.
This this set another through hole inner edge of coil groups central authorities, can set up an iron core, this iron core middle position offers a through hole, and the aperture of this through hole need be slightly larger than the external diameter of this magnetic element, and the other end of this magnetic element just can be moved up and down in this through hole.
According to technique scheme, the present invention has following obvious improvement:
One, the present invention is the side in the frame body of loudspeaker, set firmly an eardrum along its periphery, make and form a resonant cavity between this eardrum and this frame body, the central position of this eardrum, along this resonant cavity direction, and be installed with a magnetic element, so, when the set coil groups of the inboard middle position of this frame body by excitatory and when resonant cavity central authorities produce the magnetic line of force and change, this magnetic element of military order is scolded effect because of this isodynamic line changes formed suction, upper and lower displacement in the space that the central authorities or the peripheral position of this coil groups are reserved, and then make this eardrum produce vibration, sound, so, get final product effective economization tradition loudspeaker upper fixed seat, the space that part such as iron core and permanent magnet is shared significantly dwindles the thickness of loudspeaker.
Two, the present invention is the position that is adjacent to this eardrum in this movable sleeve outer rim, connect and establish one and be wavy damping membrane, this damping membrane radially extends, be connected to the appropriate position that this frame body is positioned at this resonant cavity, this frame body is positioned at this resonant cavity root edge central position, and be provided with a through hole, then be provided with one along this through hole edge and be wavy auxiliary damping membrane, this magnetic element is on an end of this resonant cavity, other is provided with a connecting rod, the other end of this connecting rod can pass another through hole that the middle position of this coil groups is reserved, and the middle position of this auxiliary damping membrane that is connected to, so, when this coil groups by excitatory and when resonant cavity central authorities produce the magnetic line of force and change, this magnetic element will be subjected to the balanced action of this damping membrane and this auxiliary damping membrane, upper and lower displacement in this another through hole of these coil groups central authorities reposefully, and then make this eardrum produce vibration, sound, so, the shift phenomenon that is taken place in the time of not only can avoiding this to be actively set on up-down vibration fully, and can effectively increase the amplitude stroke and the stability of this eardrum, avoid distortion, significantly to promote the power of loudspeaker, tonequality and volume.
Three, but the present invention's mat is set up an iron core at the peripheral position of this coil groups, with in this coil groups when excitatory, effectively increase the density of line of magnetic force that it is produced in resonant cavity central authorities, significantly to promote the power of loudspeaker.
Description of drawings
Fig. 1 is the generalized section of traditional loudspeaker.
Fig. 2 is the loudspeaker generalized section in the 6th, 415, No. 037 patent of invention of all U.S. of inventor.
Fig. 3 is the generalized section of a preferred embodiment of loudspeaker of the present invention.
Fig. 4 is the generalized section of another preferred embodiment of loudspeaker of the present invention.
Fig. 5 is the generalized section of the another preferred embodiment of loudspeaker of the present invention.
Fig. 6 is the generalized section of another preferred embodiment again of loudspeaker of the present invention.
Fig. 7 is the generalized section of another preferred embodiment again of loudspeaker of the present invention.
The figure number explanation:
Eardrum 42,62 resonant cavities 43,63
Movable sleeve 452,652 permanent magnets 451,651
Unshakable in one's determination 67 auxiliary damping membranes 68
Newel 411 through holes 45 3
Central authorities' through hole 611 another through holes 641
Connecting rod 654
Embodiment
In a preferred embodiment of the present invention, referring to Fig. 3, these loudspeaker 40 mainly comprise a frame body 41, the middle position of these frame body 41 1 sides forms the resonant cavity 43 of a depression, its periphery then pastes and is fixed with eardrum 42, this eardrum 42 extends towards the direction of this resonant cavity 43, and its middle position is installed with a magnetic element 45, the bottom center position that this frame body 41 is positioned at this resonant cavity 43 is provided with a newel 411, this center sheathed coil groups 44 that is fixed with on 411, this magnetic element 45 is provided with a through hole 453 towards an end middle position of this resonant cavity 43, its aperture is slightly larger than the external diameter of coil groups 44, make an end of this magnetic element 45 see through this through hole 453, be set in movably on this coil groups 44.
In this embodiment, when electric current is flowed through this coil groups 44, it is excitatory for military order, and producing galvanomagnetic effect at the middle position of this resonant cavity 43, the magnetic line of force that the magnetic line of force that it produced will be produced with this magnetic element 45 forms and inhales mutually and the effect of repelling each other, so along with the size of current of this coil groups 44 of input and the variation of direction, this magnetic element 45 will produce vibration up and down, and then drive this eardrum 42, make loudspeaker 40 sound.
In another preferred embodiment of the present invention, referring to Fig. 4, be at previous embodiment, except sheathed fixing this coil groups 44 on this newel 411 of these resonant cavity 43 bottoms, and in this resonant cavity 43 bottoms the position of contiguous this coil groups 44, set up another coil groups 442, the internal diameter of this another coil groups 442 is greater than the external diameter of this coil groups 44, keep a predetermined gap to each other, to make this magnetic element 45 when being subjected to the excitatory generation up-down vibration of these coil groups 44,442, just removable in this gap.So, the present invention can control the power and the volume of these loudspeaker 40 easily by the coil number of flexibly adjusting these coil groups 44 and 442 and excitatory intensity.
In aforementioned two preferred embodiments, this magnetic element 45 can be the permanent magnet of a high magnetic, this permanent magnet one end is directly fixed on the middle position of this eardrum 42, its other end then sees through this set through hole 453 of its central authorities, be set in versatilely on this coil groups 44, or be set in these coil groups 44 and 442 s' the gap.In addition, in this two embodiment, again referring to Fig. 3,4, magnetic element 45 also can be combined by the permanent magnet 451 of a movable sleeve 452 and a high magnetic, and this movable sleeve 452 is hollow sleeves, and the one end is fixed in the middle position of this eardrum 42, its other end then is connected with this permanent magnet 451, make this set through hole 453 of this permanent magnet 451 central authorities, be set in just movably on this coil groups 44, or be set in these coil groups 44 and 442 s' the gap.
In aforementioned two preferred embodiments of the present invention, referring to Fig. 3,4, for increasing the damping effect of this eardrum 42 and this magnetic element 45, to imitate positive tonequality and volume, also can on this magnetic element 45 or this movable sleeve 452, be adjacent to the position of this eardrum 42, connect and establish one and be wavy damping membrane 46, this damping membrane 46 also radially extends, and is connected to the appropriate position that this frame body 41 is positioned at this resonant cavity 43.
In another preferred embodiment of the present invention, referring to Fig. 5, these loudspeaker 60 mainly comprise a frame body 61, the middle position of these frame body 61 1 sides forms the resonant cavity 63 of a depression, its periphery then pastes and is fixed with an eardrum 62, this eardrum 62 extends towards the direction of this resonant cavity 63, and its middle position is installed with a magnetic element 65, the bottom center position that this frame body 61 is positioned at this resonant cavity 63 is provided with a central through hole 611, these central authorities' through hole 611 inner edge surfaces are to a side of this resonant cavity 63, installing is fixed with a coil groups 64, these coil groups 64 middle positions also are provided with another through hole 641, the aperture of this another through hole 641 is slightly larger than the external diameter of this magnetic element 65, and the other end of this magnetic element 65 just can be moved up and down in this another through hole 641.
In this another preferred embodiment, when electric current is flowed through this coil groups 64, it is excitatory for military order, and producing galvanomagnetic effect at the middle position of this resonant cavity 63, the magnetic line of force that the magnetic line of force that it produced will be produced with this magnetic element 65 forms and inhales mutually and the effect of repelling each other, so along with the size of current of this coil groups 64 of input and the variation of direction, this magnetic element 65 will produce vibration up and down, and then drive this eardrum 62, make loudspeaker 60 sound.
In another preferred embodiment again of the present invention, referring to Fig. 6, be at aforementioned this another preferred embodiment, set these coil groups 64 outer rims in these resonant cavity 63 bottoms, set up an iron core 67, with when the excitatory generation magnetic line of force of this coil groups 64, this isodynamic line can be because of the setting of this iron core 67, and, effectively increase the density of the magnetic line of force in this another through hole 641 to this set another through hole 641 positions convergence of these coil groups 64 central authorities.At this again in another preferred embodiment, this iron core 67 also can be arranged at these set another through hole 641 inner edges of coil groups 64 central authorities, at this moment, these iron core 67 middle positions need be offered a through hole, the aperture of this through hole need be slightly larger than the external diameter of this magnetic element 65, and the other end of this magnetic element 65 just can be moved up and down in this through hole.So, the present invention can be by this iron core 67 of flexibly selecting different magnetic capacity for use, with power and the volume that controls these loudspeaker 60 easily.
In aforementioned two preferred embodiments, this magnetic element 65 can be the permanent magnet of a high magnetic, this permanent magnet one end is directly fixed on the middle position of this eardrum 62, and its other end then is arranged in this set another through hole 641 of these coil groups 64 central authorities movably.In addition, in this two embodiment, again referring to Fig. 5,6, this magnetic element 65 also can be combined by the permanent magnet 651 of a movable sleeve 652 and a high magnetic, this movable sleeve 652 is hollow sleeves, the one end is fixed in the middle position of this eardrum 62, and its other end then is connected with this permanent magnet 651, and this permanent magnet 651 just is arranged in this set another through hole 641 of these coil groups 64 central authorities movably.
In aforementioned two preferred embodiments of the present invention, referring to Fig. 5,6, for increasing the damping effect of this eardrum 62 and this magnetic element 65, to proofread and correct its tonequality and volume, also can on this magnetic element 65 (or this movable sleeve 652), be adjacent to the position of this eardrum 62, connect and establish one and be wavy damping membrane 66, this damping membrane 66 also radially extends, and is connected to the appropriate position that this frame body 61 is positioned at this resonant cavity 63.In addition, this frame body 61 is positioned at the outer rim of this set central authorities' through hole 611 of these resonant cavity 63 root edges, can set up one in addition and be wavy auxiliary damping membrane 68, and magnetic element 65 is on an end of these resonant cavity 63 root edges, then set up a connecting rod 654, the other end of this connecting rod 654 can pass this this set another through hole 641 of coil groups 64 central authorities, and the middle position of this auxiliary damping membrane 68 that is connected to.So, when this coil groups 64 by excitatory, and when producing the magnetic line of force in the central and changing, this magnetic element 65 will be subjected to the balanced action of this damping membrane 66 and this auxiliary damping membrane 68, upper and lower displacement in this another through hole 641 of these coil groups 64 central authorities reposefully, and then make this eardrum 62 produce vibration, sound, so, the shift phenomenon that is taken place in the time of not only can avoiding this to be actively set on up-down vibration fully, and can effectively increase the amplitude stroke and the stability of this eardrum, avoid distortion, with power, tonequality and the volume that significantly promotes loudspeaker.
Because, in previous embodiment of the present invention, this permanent magnet can directly or indirectly be fixed in the middle position of this eardrum, as shown in Figure 7, this permanent magnet 651 is appropriate positions of being fixed on this connecting rod 654, therefore effective shared spaces of part such as the traditional loudspeaker upper fixed seat of economization, iron core and permanent magnet significantly dwindle the thickness of loudspeaker, and alleviate its weight.In addition, because this coil groups is to be directly fixed on the middle position of frame body of loudspeaker, so when this coil groups when excitatory, can directly produce to inhale and scold effect, and then drive this eardrum, sound this magnetic element, the package assembly and the cost of loudspeaker have not only effectively been simplified, also can increase the amplitude stroke of this eardrum, avoid distortion, significantly promote the bass characteristic and the power of loudspeaker.
The above only is preferred embodiment of the present invention, only; the interest field that the present invention advocated is not limited thereto, and presses all this skill personages that is familiar with; according to the disclosed technology contents of the present invention, can think easily and equivalence change, all should belong to and not break away from protection category of the present invention.
Claims (12)
1, a kind of magnetic element is fixedly arranged on horn structure on the eardrum, comprises:
One frame body, the middle position of this frame body one side forms the resonant cavity of a depression, and its periphery then pastes and is fixed with an eardrum, and this eardrum extends towards the direction of this resonant cavity;
One newel, this newel are fixedly arranged on the middle position that this frame body is positioned at this resonant cavity bottom;
One coil groups, this coil groups is sheathed to be fixed on this newel;
One magnetic element, one end of this magnetic element is fixedly arranged on the middle position of this eardrum, this magnetic element is provided with a through hole towards an end middle position of this resonant cavity bottom, the aperture of this through hole is slightly larger than the external diameter of this coil groups, make the other end of this magnetic element just can see through this through hole, be set in versatilely on this coil groups.
2, according to claim 1 magnetic element is fixedly arranged on horn structure on the eardrum, it is characterized in that, this magnetic element is the permanent magnet of a high magnetic, this permanent magnet one end is directly fixed on the middle position of this eardrum, its other end then sees through this set through hole of its central authorities, is set in versatilely on this coil groups.
3, according to claim 1 magnetic element is fixedly arranged on horn structure on the eardrum, it is characterized in that this magnetic element comprises:
One movable sleeve, this movable sleeve are hollow sleeves, and the one end is fixed in the middle position of this eardrum;
One permanent magnet, this permanent magnet is connected to the other end of this movable sleeve, and this this set through hole of permanent magnet central authorities is set on this coil groups just movably.
4, according to claim 1 magnetic element is fixedly arranged on horn structure on the eardrum, it is characterized in that, be adjacent to the position of this eardrum on this magnetic element, be provided with one and be wavy damping membrane, this damping membrane also radially extends, and is connected to the appropriate position that this frame body is positioned at this resonant cavity.
5, according to claim 1 magnetic element is fixedly arranged on horn structure on the eardrum, it is characterized in that, position in this contiguous this coil groups in resonant cavity bottom, set up another coil groups, the internal diameter of this another coil groups is greater than the external diameter of this coil groups, keep a predetermined gap to each other, magnetic element is removable in this gap.
6, a kind of magnetic element is fixedly arranged on horn structure on the eardrum, comprises:
One frame body, the middle position of this frame body one side forms the resonant cavity of a depression, its periphery then pastes and is fixed with an eardrum, and this eardrum extends towards the direction of this resonant cavity, and the bottom center position that this frame body is positioned at this resonant cavity is provided with a central through hole;
One magnetic element, an end of this magnetic element is fixedly arranged on the middle position of this eardrum;
One coil groups, this coil groups is fixedly arranged on the side of this central authorities' through hole inner edge surface to this resonant cavity, this coil groups middle position also is provided with another through hole, the aperture of this another through hole is slightly larger than the external diameter of this magnetic element, and the other end of this magnetic element just can move up and down in this another through hole.
7, according to claim 6 magnetic element is fixedly arranged on horn structure on the eardrum, it is characterized in that, this magnetic element is the permanent magnet of a high magnetic, this permanent magnet one end is directly fixed on the middle position of this eardrum, and its other end then is arranged in this set another through hole of these coil groups central authorities movably.
8, according to claim 6 magnetic element is fixedly arranged on horn structure on the eardrum, it is characterized in that this magnetic element comprises:
One movable sleeve, this movable sleeve are hollow sleeves, and the one end is fixed in the middle position of this eardrum;
One permanent magnet, this permanent magnet is connected to the other end of this movable sleeve, and this permanent magnet is arranged in this set another through hole of these coil groups central authorities just movably.
9, according to claim 6 magnetic element is fixedly arranged on horn structure on the eardrum, it is characterized in that, the position of contiguous this eardrum on this magnetic element, be provided with one and be wavy damping membrane, this damping membrane also radially extends, and is connected to the appropriate position that this frame body is positioned at this resonant cavity.
10, according to claim 9 magnetic element is fixedly arranged on horn structure on the eardrum, it is characterized in that, this frame body is positioned at the outer rim of this set central authorities' through hole of this resonant cavity root edge, other is provided with one and is wavy auxiliary damping membrane, and this magnetic element is on an end of this resonant cavity root edge, then set up a connecting rod, the other end of this connecting rod passes this this set another through hole of coil central authorities, and the middle position of this auxiliary damping membrane that is connected to.
11, according to claim 10 magnetic element is fixedly arranged on horn structure on the eardrum, it is characterized in that this this set coil groups outer rim of resonant cavity bottom is set up an iron core.
12, according to claim 10 magnetic element is fixedly arranged on horn structure on the eardrum, it is characterized in that, this this set another through hole inner edge of coil groups central authorities, set up an iron core, this iron core middle position offers a through hole, the aperture of this through hole need be slightly larger than the external diameter of this magnetic element, and the other end of this magnetic element just can be moved up and down in this through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031020364A CN1316854C (en) | 2003-01-27 | 2003-01-27 | Bugle structure with magnetic element fixed on drum membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031020364A CN1316854C (en) | 2003-01-27 | 2003-01-27 | Bugle structure with magnetic element fixed on drum membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1522096A CN1522096A (en) | 2004-08-18 |
| CN1316854C true CN1316854C (en) | 2007-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031020364A Expired - Fee Related CN1316854C (en) | 2003-01-27 | 2003-01-27 | Bugle structure with magnetic element fixed on drum membrane |
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| CN (1) | CN1316854C (en) |
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| CN2448041Y (en) * | 2000-10-19 | 2001-09-12 | 潘正平 | Moving coil loudspeaker using large voice-coil |
| US6359541B1 (en) * | 1998-11-29 | 2002-03-19 | Citizen Electronics Co., Ltd. | Surface-mounted electromagnetic sound generator |
| US6501844B2 (en) * | 2000-12-08 | 2002-12-31 | Jl Audio, Inc. | Loudspeaker and method of assembling same |
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2003
- 2003-01-27 CN CNB031020364A patent/CN1316854C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5594805A (en) * | 1992-03-31 | 1997-01-14 | Kabushiki Kaisha Kenwood | Loudspeaker |
| JPH06315195A (en) * | 1993-04-28 | 1994-11-08 | Matsushita Electric Ind Co Ltd | Speaker |
| US6359541B1 (en) * | 1998-11-29 | 2002-03-19 | Citizen Electronics Co., Ltd. | Surface-mounted electromagnetic sound generator |
| CN2448041Y (en) * | 2000-10-19 | 2001-09-12 | 潘正平 | Moving coil loudspeaker using large voice-coil |
| US6501844B2 (en) * | 2000-12-08 | 2002-12-31 | Jl Audio, Inc. | Loudspeaker and method of assembling same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1522096A (en) | 2004-08-18 |
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Granted publication date: 20070516 Termination date: 20220127 |