CN210053568U - Multi-channel input driven small-sized loudspeaker and medium-high-sound loudspeaker - Google Patents
Multi-channel input driven small-sized loudspeaker and medium-high-sound loudspeaker Download PDFInfo
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- CN210053568U CN210053568U CN201921101435.XU CN201921101435U CN210053568U CN 210053568 U CN210053568 U CN 210053568U CN 201921101435 U CN201921101435 U CN 201921101435U CN 210053568 U CN210053568 U CN 210053568U
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Abstract
The utility model discloses a multichannel input driven small-size speaker and well high voice speaker has increased speaker sensitivity, improves the speaker definition, reduces the distortion. A small loudspeaker driven by multiple paths of input comprises a basin frame, a sound basin arranged on the basin frame, and a plurality of input driving mechanisms, wherein each input driving mechanism comprises a voice coil and a magnetic circuit assembly used for driving the voice coil to vibrate; the voice coil penetrates through the corresponding magnetic circuit mounting hole, and the lower part of the voice coil is inserted into the magnetic gap; a plurality of voice coil installation positioning holes are formed in the bottom of the flat-plate-shaped voice cone, and at most one voice coil is arranged at each voice coil installation positioning hole.
Description
Technical Field
The utility model belongs to the speaker field relates to a multichannel input driven small-size speaker and multichannel input driven well high pitch loudspeaker.
Background
The structure that current small-size speaker generally adopted plastics class film material dish sound basin combination voice coil loudspeaker voice coil, sound basin bottom center is equipped with 1 fixed voice coil loudspeaker voice coil step, fixes one way signal input voice coil loudspeaker voice coil one end on sound basin bottom center step, forms small-size speaker vibration system, and this kind of small-size speaker can only be applied to one way signal input, and one way audio signal input has the limitation to the original sound playback, and has higher requirement to sound basin material rigidity when single voice coil loudspeaker voice coil and sound basin are combined. Or 1 fixed voice coil step is arranged at the center of the bottom of the sound cone, one end of the voice coil which can input multi-path signals is fixed on the central step of the bottom of the sound cone, wherein the voice coil is formed by laminating a plurality of groups of coils from inside to outside to form a small loudspeaker vibration system, the small loudspeaker can be applied to multi-path signal input, but because the loudspeaker is wound with a plurality of groups of coils on one voice coil, the weight of the voice coil is increased on one voice coil formed by winding a plurality of groups of coils, the sensitivity of the small loudspeaker is influenced by reduction, and the small loudspeaker has limitation on original sound reproduction.
For a middle and high-pitch loudspeaker, a dome sound film combined voice coil structure is mostly adopted, one end of the voice coil is directly fixed on a central positioning step on the reverse side of the dome sound film to form a high-pitch vibration system, the middle and high-pitch loudspeaker can only be applied to single-path signal input, the single-path audio signal input has limitation on original sound reproduction, and the single voice coil and the voice coil have higher requirements on the rigidity of sound film materials when combined. Or 1 fixed voice coil step is arranged at the center of the bottom of the sound film, one end of the voice coil which can input multi-path signals is fixed on the central step of the bottom of the sound film, wherein the voice coil is formed by laminating a plurality of groups of coils from inside to outside to form a medium-high sound device vibration system.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is a first object of the present invention to provide a multi-channel input-driven small-sized speaker, which increases sensitivity of the small-sized speaker, improves definition of the small-sized speaker, and reduces distortion. A second object of the present invention is to provide a multi-channel input-driven middle and high-pitched loudspeaker, which increases the sensitivity of the middle and high-pitched loudspeaker, improves the definition of the middle and high-pitched loudspeaker, and reduces distortion.
In order to achieve the above object, the utility model discloses a technical scheme do:
a small loudspeaker driven by multiple paths of input comprises a frame, a sound cone arranged on the frame, and a plurality of input driving mechanisms, wherein each input driving mechanism comprises a voice coil and a magnetic circuit assembly used for driving the voice coil to vibrate, the magnetic circuit assembly comprises a U-shaped iron with an inner cavity, magnetic steel and a magnetic pole core arranged in the U-shaped iron, a magnetic gap is formed between the magnetic steel and the magnetic pole core and the inner wall of the U-shaped iron, and the voice coil can be inserted into the magnetic gap in a vertically movable mode; the voice coil penetrates through the corresponding magnetic circuit mounting hole, and the lower part of the voice coil is inserted into the magnetic gap; the voice cone is provided with a flat-plate-shaped voice cone bottom, a plurality of voice coil installation positioning holes are formed in the voice cone bottom, and at most one voice coil is arranged at each voice coil installation positioning hole.
The utility model provides a small-size speaker is a small-size speaker of no location support piece. The term "small speaker" refers to a speaker with a size of less than 100mm, which is suitable for use in an earphone or the like, and has a frequency range of 50 to 15000 Hz.
Preferably, the number of the input driving mechanisms is three or more, and the three or more input driving mechanisms are arranged at equal intervals along a circumference. In a loudspeaker having a generally circular voice coil, a plurality of input drive mechanisms are arranged in a circular array.
Optionally, three or more of the input drive mechanisms are arranged linearly or in an array. In a generally oval or rectangular speaker, a plurality of input drive mechanisms are arranged linearly or in an array, and the cone is oval or rectangular.
More preferably, the cone has a flat-plate-shaped cone bottom portion which is circular as a whole, and the center of the circle coincides with the center of the bottom portion of the cone.
Furthermore, three or more than three voice coil installation positioning holes are formed in the bottom of the sound cone, the voice coil installation positioning holes are arranged at equal intervals along the circumference, and one voice coil is arranged in each voice coil installation positioning hole so that the voice coil is connected with the bottom of the sound cone.
Furthermore, the cone also has a tapered edge part extending from the outer edge of the bottom of the cone in an upward inclined manner, and the tapered edge part is fixedly connected to the cone frame through a yoke ring.
More preferably, the basin stand is provided with three or more magnetic circuit mounting holes, the magnetic circuit mounting holes are arranged at equal intervals along the circumference, and each magnetic circuit mounting hole is provided with one magnetic circuit assembly.
Preferably, the upper edge of the U-shaped iron is fixedly connected to the lower surface of the basin stand.
Preferably, the magnetic steel is neodymium magnetic steel or ferrite magnetic steel.
Preferably, the magnetic circuit assembly is composed of the U-iron, and a magnetic pole core and neodymium magnetic steel which are arranged in the U-iron, and the lower surface of the magnetic pole core is attached to the upper surface of the neodymium magnetic steel.
Preferably, a plurality of pairs of audio signal input terminals are arranged on the edge of the frame, and each pair of audio signal input terminals is electrically connected with the lead of one voice coil respectively. The connection of the product is simplified, and the audio signal input connection is convenient.
The utility model discloses another kind of technical scheme do:
a multi-channel input driven middle and high sound loudspeaker comprises a sound film bracket, a sound film arranged on the sound film bracket, and a plurality of input driving mechanisms, wherein each input driving mechanism comprises a voice coil and a magnetic circuit assembly used for driving the voice coil to vibrate, the magnetic circuit assembly comprises a U iron with an inner cavity, magnetic steel and a magnetic pole core arranged in the U iron, a magnetic gap is formed between the magnetic steel and the magnetic pole core and the inner wall of the U iron, and the voice coil can be inserted in the magnetic gap in a vertically moving mode; the voice coil is inserted into the magnetic gap from the corresponding magnetic circuit mounting hole, and the lower part of the voice coil penetrates through the magnetic circuit mounting hole; the voice coil is characterized in that the lower portion of the voice film is fixedly connected with a flat voice coil support, a plurality of voice coil installation positioning grooves are formed in the voice coil support, and each voice coil installation positioning groove is provided with one voice coil at most.
The utility model provides a well high voice speaker is a well high voice speaker who does not have location support piece. Here, the term "mid-high speakers" is a speaker with a frequency between 1500-20000 Hz.
Preferably, the number of the input driving mechanisms is three or more, the three or more input driving mechanisms are arranged at equal intervals along a circumference, the voice coil support is integrally circular, and the circle center of the circumference coincides with the circle center of the voice coil support. In a loudspeaker having a generally circular voice coil support, a plurality of input drive mechanisms are arranged in a circular array.
Optionally, three or more of the input drive mechanisms are arranged linearly or in an array. In a speaker having a voice coil former of a generally oval or rectangular shape, a plurality of input drive mechanisms are arranged linearly or in an array. The sound film is in an oval or rectangular shape;
more preferably, three or more than three voice coil mounting positioning grooves are formed in the voice coil support, the voice coil mounting positioning grooves are arranged at equal intervals along the circumference, and each voice coil mounting positioning groove is internally provided with one voice coil so that the voice coil is connected with the voice coil support; the sound film bracket is provided with three or more magnetic circuit mounting holes, the magnetic circuit mounting holes are arranged at equal intervals along the circumference, and each magnetic circuit mounting hole is respectively provided with one magnetic circuit assembly.
More preferably, the voice diaphragm has an upwardly arched spherical portion and a yoke ring formed around an outer edge of the spherical portion, and the yoke ring is fixedly connected to the voice coil former.
Preferably, the medium-high sound speaker further comprises a sound diffuser, and the sound diffuser cover is disposed on the sound membrane.
Preferably, the upper edge of the U-iron is fixedly connected to the lower surface of the voice diaphragm support.
Preferably, the magnetic steel is neodymium magnetic steel or ferrite magnetic steel.
Preferably, the magnetic circuit assembly is composed of the U-iron, and a magnetic pole core and neodymium magnetic steel which are arranged in the U-iron, and the lower surface of the magnetic pole core is attached to the upper surface of the neodymium magnetic steel.
Preferably, a plurality of pairs of audio signal input terminals are arranged on the edge of the voice diaphragm support, and each pair of audio signal input terminals is electrically connected with a lead of one of the voice coils. The connection of the product is simplified, and the audio signal input connection is convenient.
The utility model adopts the above scheme, compare prior art and have following advantage:
the small or medium high pitch loudspeaker driven by multipath input of the utility model has skillful and reasonable structure, receives the audio signal input through a plurality of voice coils respectively, and the original sound reproduction and distortion are superior to the traditional loudspeaker; through adopting the input drive structure that a plurality of magnetic circuit components are constituteed, increase speaker sensitivity, improved the speaker definition.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is an exploded schematic view of a small-sized speaker according to embodiment 1;
FIG. 2 is a schematic view of the frame of FIG. 1 after mounting the voice coil;
FIG. 3 is a schematic view of the compact loudspeaker of FIG. 1 after assembly;
fig. 4 is an exploded schematic view of a medium-high sound speaker according to embodiment 2;
FIG. 5 is a schematic view of the voice diaphragm support of FIG. 4 after mounting a voice coil;
fig. 6 is a schematic view of the mid-high range speaker of fig. 4 after assembly.
Wherein:
1. a basin stand; 10. a magnetic circuit mounting hole; 2. a sound basin; 20. the voice coil is provided with a positioning hole; 21. the bottom of the sound basin; 22. a tapered edge portion; 3. an input drive mechanism; 31. a voice coil; 310. a lead wire; 32. a magnetic pole core; 33. neodymium magnet steel; 34. iron U; 4. a yoke ring; 5. an audio signal input terminal;
1', a sound film bracket; 10', a magnetic circuit mounting hole; 2', a sound membrane; 20', a spherical portion; 21', a yoke ring; 22', a voice coil former; 3', inputting a driving mechanism; 31', a voice coil; 310', lead wires; 32', a pole core; 33', neodymium magnetic steel; 34', U iron; 4', a sound diffusing cover; 5', audio signal input terminal.
Detailed Description
The following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, enables the advantages and features of the invention to be more readily understood by those skilled in the art. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.
Example 1
The embodiment provides a small loudspeaker driven by multiple input paths, in particular to a small loudspeaker without a positioning support sheet. Here, the multi-path input means that a plurality of audio signals are input to a plurality of voice coils, and the plurality of voice coils drive the speaker to generate sound. Referring to fig. 1 to 3, the multi-input driven speaker includes: a basin frame 1, a sound basin 2 and a plurality of input driving mechanisms 3. The sound basin 2 is used for vibration and sound production and is fixedly arranged on the basin frame 1. Each input driving mechanism 3 comprises a voice coil 31 and a magnetic circuit component for driving the voice coil 31 to vibrate; wherein, the basin frame 1 is provided with a plurality of magnetic circuit mounting holes 10, and each magnetic circuit mounting hole 10 is provided with at most one magnetic circuit component; the voice cone 2 is provided with a plurality of voice coil mounting positioning holes 20, and at most one voice coil 31 is arranged at each voice coil mounting positioning hole 20. That is, the plurality of drive input mechanisms are attached to the bowl frame 1 and the sound bowl 2. The number of the input driving mechanisms 3 is three or more to increase the driving energy of the speaker, and the three or more input driving mechanisms 3 are arranged at equal intervals along a circumference. The cone 2 has a flat plate-like cone bottom 21 that is circular as a whole, and the center of the circle coincides with the center of the cone bottom 21, that is, the plurality of input drive mechanisms 3 are arranged at equal intervals in the circumferential direction of the cone bottom 21. Correspondingly, three or more than three voice coil mounting positioning holes 20 are formed in the cone bottom 21, the voice coil mounting positioning holes 20 are arranged at equal intervals along the circumference, and each voice coil 31 is arranged in each voice coil mounting positioning hole 20 so that each voice coil 31 is connected with the cone bottom 21; three or more than three magnetic circuit mounting holes 10 are formed in the basin frame 1, the magnetic circuit mounting holes 10 are arranged at equal intervals along the circumference, and a magnetic circuit assembly is arranged in each magnetic circuit mounting hole 10. Specifically, as shown in fig. 1 to 3, the number of the input driving mechanism 3, the voice coil mounting positioning hole 20, and the magnetic circuit mounting hole 10 is three, and the input driving mechanism, the voice coil mounting positioning hole, and the magnetic circuit mounting hole are annularly arranged around the center of the cone bottom 21.
In this embodiment, a cone with a circular bottom is preferably used, and the plurality of input driving mechanisms are annularly arranged around the center of the cone bottom. In yet other embodiments, the cone has an overall oval or rectangular cone bottom, and the plurality of input driving mechanisms are arranged linearly or in an array.
In this embodiment, the frame 1 is made of plastic by injection molding and the like, and is easy to mold and has a certain strength, and the magnetic circuit mounting holes 10 are through holes penetrating through the frame 1 from top to bottom. The cone 2 also has a tapered edge portion 22 extending obliquely upward from the outer edge of the cone bottom 21, the tapered edge portion 22 being provided in a circle around the cone bottom 21. The sound cone 2 is integrally made of paper pulp, plastic (such as PP (polypropylene)), bulletproof fiber or aluminum alloy, and the manufactured sound cone 2 is light in weight, good in damping elasticity and rigidity, resistant to high temperature and low temperature, waterproof and mildew-proof. Furthermore, the cone 2 has its conical edge portion 22 fixedly connected to the frame 1 by a ring of yoke rings 4, the yoke rings 4 being made of sponge, rubber or cloth. The sound cone 2 with the shape is superior to the traditional conical loudspeaker in the aspect of directivity expansion width, and the height of the sound cone 2 is reduced compared with that of the traditional conical sound cone, so that the total height of the loudspeaker is reduced.
Specifically, the input drive mechanism 3 includes a voice coil 31, a magnetic pole core 32, neodymium magnet steel 33, and a U-shaped iron 34. In each input drive mechanism 3, the upper end of the voice coil 31 is fixedly connected to the cone 2, so that the cone 2 can be driven to vibrate; the voice coil 31 passes through the corresponding magnetic circuit mounting hole 10. The U-shaped iron 34 is provided with an inner cavity, the upper end of the U-shaped iron 34 is arranged in an open manner, the upper edge of the U-shaped iron 34 is fixedly connected to the lower surface of the basin frame 1 adjacent to the magnetic circuit mounting hole 10, and the magnetic circuit mounting hole 10 is communicated with the inner cavity of the U-shaped iron 34; the magnetic pole core 32 and the neodymium magnetic steel 33 are stacked from top to bottom and are fixedly arranged in the inner cavity of the U-shaped iron 34 to form a magnetic circuit assembly; the lower surface of the magnetic pole core 32 is tightly attached to the upper surface of the neodymium magnetic steel 33; the magnetic pole core 32 and the neodymium magnet steel 33 are spaced from the inner wall of the U-iron 34 to form a magnetic gap surrounding the magnetic pole core 32 and the neodymium magnet steel 33, the lower end of the voice coil 31 is inserted downward into the magnetic gap from the magnetic circuit mounting hole 10, a gap exists between the voice coil 31 and the magnetic pole core 32 and the neodymium magnet steel 33, and a gap also exists between the voice coil 31 and the inner wall of the U-iron 34, so that the voice coil can move up and down in the magnetic gap.
The magnetic circuit component in the embodiment adopts the neodymium magnetic steel, and has the advantages of small volume and light weight. In other embodiments, the neodymium magnets in the magnetic circuit assembly can be replaced by ferrite magnets respectively, thereby reducing the cost of the magnetic circuit assembly.
As shown in fig. 2, a plurality of pairs of audio signal input terminals 5 are disposed at the edge of the frame 1, and each pair of audio signal input terminals 5 is electrically connected to a lead of one voice coil 31. Each pair of audio signal input terminals 5 includes a positive terminal and a negative terminal, one lead of each voice coil 31 is electrically connected to the positive terminal of the pair of audio signal input terminals 5, and the other lead is electrically connected to the negative terminal of the pair of audio signal input terminals 5 to receive an audio signal (analog signal or digital signal) input by the pair of audio signal input terminals 5. Thus, the four voice coils 31 are simultaneously driven through the three pairs of audio signal input terminals 5. The integrated terminal for realizing audio signal input is arranged on the frame 1 for a plurality of times, and the positive and negative leads of each voice coil 31 can be respectively connected with the terminal of the frame 1, so that the connection mode not only simplifies the manufacture of a multi-path input drive loudspeaker, but also facilitates the connection of audio signal input.
The working principle of the small loudspeaker driven by multiple paths of input is as follows: audio signal passes through audio signal input terminal 5 input to a plurality of voice coil 31 on basin frame 1, and a plurality of voice coil 31 are therefore synchronous up-and-down motion under magnetic circuit component's effect to promote the vibration of sound basin 2, carry out the sound production. The utility model discloses a multichannel input driven small-size speaker, adopt the bottom to be flat sound basin 2, voice coil loudspeaker voice coil erection locating hole 20 three or more than three begins on the plane that sound basin bottom 21 formed, and voice coil loudspeaker voice coil 31 more than three or three combines closely, voice coil loudspeaker voice coil 31 again with three or more than three location support piece 33 combines closely, form three or more than three input actuating mechanism 3, adopt three or more than three magnetic circuit component drive voice coil loudspeaker voice coil 31, voice coil loudspeaker voice coil 31 through three or more than three promotes sound basin 2, consequently, not only can reduce the product height, can widen the product directive property again, input through a plurality of audio signal, reduce the product distortion, increase speaker sensitivity, improve speaker definition. And the integrated terminal is adopted, so that the connection of the product is simplified, and the audio signal input connection is facilitated.
The small loudspeaker is ingenious and reasonable in structure, and the directivity width of the conical sound cone with the plane bottom is superior to that of the traditional loudspeaker by adopting the structure of the conical sound cone with the plane bottom; the three or more voice coils are used for respectively receiving audio signal input, and the original sound reproduction and distortion are superior to those of the traditional loudspeaker; by adopting the shape of the cone with the conical plane bottom, the height of the cone is lower than that of the traditional conical cone, and the height reduction of the cone can also reduce the height of the product; the sensitivity of the small loudspeaker is increased by adopting an input driving structure consisting of three or more voice coils and three or more magnetic circuit assemblies; the voice cone is tightly connected with three or more voice coils through a conical voice cone at the bottom of the plane, and the three or more voice coils drive the voice coils to move up and down to drive the voice cone to generate sound through three or more audio signal inputs in a U-shaped magnetic circuit.
Example 2
The embodiment provides a multi-input-driven middle and high-pitch loudspeaker, in particular to a middle and high-pitch loudspeaker without a positioning support piece. Here, the multi-path input means that a plurality of audio signals are input to a plurality of voice coils, and the plurality of voice coils drive the speaker to generate sound. Referring to fig. 4 to 6, the middle and high-pitched speaker includes: a sound membrane holder 1 ', a sound membrane 2 ' and a plurality of input drive mechanisms 3 '. The sound film 2 'is used for vibration sound production and is fixedly arranged on the sound film support 1'. Each input driving mechanism 3 ' comprises a voice coil 31 ' and a magnetic circuit component for driving the voice coil 31 ' to vibrate; wherein, a plurality of magnetic circuit mounting holes 10 ' are arranged on the sound film bracket 1 ', and at most one magnetic circuit component is arranged at each magnetic circuit mounting hole 10 '; the lower portion of the diaphragm 2 'is fixedly connected with a voice coil support 22', the lower surface of the voice coil support 22 'is provided with a plurality of voice coil mounting positioning grooves (not shown in the figure), and each voice coil mounting positioning groove is provided with at most one voice coil 31'. That is, the plurality of drive input mechanisms are attached to the diaphragm holder 1 'and the diaphragm 2'. The number of the input driving mechanisms 3 'is three or more to increase the driving energy of the speaker, and the three or more input driving mechanisms 3' are arranged at equal intervals along a circumference. The voice coil former 22 'is circular and flat, and the center of the circle coincides with the center of the voice coil former 22', that is, the plurality of input drive mechanisms 3 'are arranged at equal intervals along the circumferential direction of the voice coil former 22'. Correspondingly, three or more than three voice coil installation positioning grooves are formed in the lower surface of the voice coil support 22 ', the voice coil installation positioning grooves are arranged at equal intervals along the circumference, and each voice coil installation positioning groove is internally provided with a voice coil 31' so that the voice coil 31 'is connected with the voice coil support 22'; three or more magnetic circuit mounting holes 10 'are formed in the sound film support 1', the magnetic circuit mounting holes 10 'are arranged at equal intervals along the circumference, and a magnetic circuit assembly is arranged in each magnetic circuit mounting hole 10'. Specifically, as shown in fig. 4, the number of the input driving mechanism 3 ', the number of the voice coil mounting positioning grooves, and the number of the magnetic circuit mounting holes 10 ' are three, and the input driving mechanism, the voice coil mounting positioning grooves, and the magnetic circuit mounting holes are annularly arranged around the center of the voice coil support 22 '.
In the present embodiment, it is preferable that the voice coil bobbin 22 ' is formed in a circular shape as a whole, and the plurality of input driving mechanisms 3 ' are arranged in a circular shape around the center of the voice coil bobbin 22 '. In other embodiments, the voice coil support 22 'is oval or rectangular in shape, and a plurality of the input driving mechanisms 3' are arranged linearly or in an array.
The sound membrane 2 'has an upwardly arched spherical portion 20' and a yoke ring 21 'formed around the outer edge of the spherical portion 20' and integrally formed or fixedly connected therewith. The yoke ring 21 'and the voice coil holder 22' are fixedly connected, and in the present embodiment, the yoke ring 21 'and the voice coil holder 22' are integrally bonded, so that a voice cavity is formed between the spherical portion 20 'and the voice coil holder 22'. The voice coil former 22 ' is a circular flat plate-like thin plate, and is fixedly connected below the spherical portion 20 ' by a yoke ring 21 '.
Specifically, the input drive mechanism 3 ' includes a voice coil 31 ', a magnetic pole core 32 ', neodymium magnet steel 33 ', and a U-shaped iron 34 '. In each input driving mechanism 3 ', the upper end of the voice coil 31 ' is fixedly connected to the voice coil bracket 22 ', so that the voice coil bracket 22 ' and the voice diaphragm 2 ' connected with the voice coil bracket can be driven to vibrate; the voice coil 31 'passes through the corresponding magnetic circuit mounting hole 10'. The U iron 34 'is provided with an inner cavity, the upper end of the U iron is arranged in an open manner, the upper edge of the U iron 34' is fixedly connected to the lower surface of the sound film bracket 1 'adjacent to the magnetic circuit mounting hole 10', and the magnetic circuit mounting hole 10 'is communicated with the inner cavity of the U iron 34'; the magnetic pole core 32 ' and the neodymium magnetic steel 33 ' are stacked from top to bottom and fixedly arranged in the inner cavity of the U-shaped iron 34 ' to form a magnetic circuit assembly; the lower surface of the magnetic pole core 32 'is tightly attached to the upper surface of the neodymium magnetic steel 33'; the magnetic pole core 32 'and the neodymium magnet steel 33' are spaced from the inner wall of the U-shaped iron 34 ', so that a magnetic gap surrounding the magnetic pole core 32' and the neodymium magnet steel 33 'is formed, the lower end of the voice coil 31' is inserted downwards into the magnetic gap from the magnetic circuit mounting hole 10 ', a gap exists between the voice coil 31' and the magnetic pole core 32 'and the neodymium magnet steel 33', and a gap also exists between the voice coil 31 'and the inner wall of the U-shaped iron 34', so that the voice coil can move up and down in the magnetic gap.
The medium-high sound loudspeaker also comprises a sound diffuser 4 ', the sound diffuser 4 ' is covered on the sound film 2 ', and the sound diffuser 4 ' is fixed on the sound film bracket 1 '.
As shown in fig. 5, the edge of the voice diaphragm support 1 'is provided with a plurality of pairs of audio signal input terminals 5', and each pair of audio signal input terminals 5 'is electrically connected to a lead of one voice coil 31'. Each pair of audio signal input terminals 5 ' includes a positive terminal and a negative terminal, one lead of each voice coil 31 ' is electrically connected to the positive terminal of the pair of audio signal input terminals 5 ', and the other lead is electrically connected to the negative terminal of the pair of audio signal input terminals 5 ' to receive the audio signal (analog signal or digital signal) input from the pair of audio signal input terminals 5 '. Thus, the four voice coils 31 'are simultaneously driven through the three pairs of audio signal input terminals 5'. The voice film support 1 ' is provided with a plurality of integrated terminals for realizing audio signal input, and the positive and negative leads of each voice coil 31 ' can be respectively connected with the terminals of the voice film support 1 ', so that the connection mode not only simplifies the manufacture of a multi-path input drive loudspeaker, but also facilitates the connection of audio signal input.
The working principle of the multi-path input driven middle and high sound loudspeaker is as follows: the voice signal is inputted to the plurality of voice coils 31 'through the voice signal input terminal 5' on the voice diaphragm support 1 ', and the plurality of voice coils 31' thus move up and down synchronously under the action of the magnetic circuit assembly, thereby pushing the voice coil support 22 'and the voice diaphragm 2' connected therewith to vibrate and generate sound. The utility model discloses a multichannel input driven well high voice speaker promotes sound membrane 2 'through voice coil loudspeaker voice coil 31' three or more than three, reduces the product distortion, increases speaker sensitivity, improves the speaker definition. And the integrated terminal is adopted, so that the connection of the product is simplified, and the audio signal input connection is facilitated.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are preferred embodiments, which are intended to enable persons skilled in the art to understand the contents of the present invention and to implement the present invention, and thus, the protection scope of the present invention cannot be limited thereby. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a small-size speaker of multichannel input drive, includes the basin frame and set up in sound basin on the basin frame, its characterized in that: the miniature loudspeaker also comprises a plurality of input driving mechanisms, each input driving mechanism respectively comprises a voice coil and a magnetic circuit assembly for driving the voice coil to vibrate, each magnetic circuit assembly comprises a U-shaped iron with an inner cavity, magnetic steel and a magnetic pole core arranged in the U-shaped iron, magnetic gaps are formed between the magnetic steel and the magnetic pole core and the inner wall of the U-shaped iron, and the voice coil can be inserted into the magnetic gaps in a vertically moving mode; the voice coil penetrates through the corresponding magnetic circuit mounting hole, and the lower part of the voice coil is inserted into the magnetic gap; the voice cone is provided with a flat-plate-shaped voice cone bottom, a plurality of voice coil installation positioning holes are formed in the voice cone bottom, and at most one voice coil is arranged at each voice coil installation positioning hole.
2. A compact loudspeaker according to claim 1, wherein: the number of the input driving mechanisms is three or more, the three or more input driving mechanisms are arranged at equal intervals along a circumference, the whole cone bottom is circular, and the circle center of the circumference is coincident with that of the cone bottom.
3. A compact loudspeaker according to claim 2, wherein: three or more than three voice coil installation positioning holes are formed in the bottom of the sound cone, the voice coil installation positioning holes are arranged at equal intervals along the circumference, and each voice coil installation positioning hole is internally provided with one voice coil so that the voice coils are connected with the bottom of the sound cone; the basin frame is provided with three or more magnetic circuit mounting holes, the magnetic circuit mounting holes are arranged at equal intervals along the circumference, and each magnetic circuit mounting hole is respectively provided with one magnetic circuit assembly.
4. A compact loudspeaker according to claim 2, wherein: the cone is also provided with a conical edge part which extends upwards from the outer edge of the bottom of the cone in an inclined way, and the conical edge part is fixedly connected to the cone frame through a yoke ring.
5. A compact loudspeaker according to claim 1, wherein: the magnetic circuit component is composed of the U iron, a magnetic pole core and neodymium magnetic steel, wherein the magnetic pole core and the neodymium magnetic steel are arranged in the U iron, and the lower surface of the magnetic pole core is attached to the upper surface of the neodymium magnetic steel.
6. The utility model provides a multichannel input driven well high voice speaker, includes the sound membrane support and set up in sound membrane on the sound membrane support, its characterized in that: the middle and high-sound loudspeaker also comprises a plurality of input driving mechanisms, each input driving mechanism respectively comprises a voice coil and a magnetic circuit assembly for driving the voice coil to vibrate, each magnetic circuit assembly comprises a U-shaped iron with an inner cavity, magnetic steel and a magnetic pole core arranged in the U-shaped iron, magnetic gaps are formed between the magnetic steel and the magnetic pole core and the inner wall of the U-shaped iron, and the voice coil can be inserted into the magnetic gaps in a vertically moving mode; the voice coil penetrates through the corresponding magnetic circuit mounting hole, and the lower part of the voice coil is inserted into the magnetic gap; the lower part fixedly connected with of sound membrane is flat voice coil loudspeaker voice coil support, be equipped with a plurality of voice coil loudspeaker voice coil installation constant head tank on the voice coil loudspeaker voice coil support, every voice coil loudspeaker voice coil installation constant head tank is provided with one at most the voice coil loudspeaker voice coil.
7. The mid-high range speaker of claim 6, wherein: the voice coil support is characterized in that the number of the input driving mechanisms is three or more, the three or more input driving mechanisms are arranged at equal intervals along a circumference, the voice coil support is integrally circular, and the circle center of the circumference is coincided with that of the voice coil support.
8. The mid-high range speaker of claim 7, wherein: the voice coil bracket is provided with three or more voice coil installation positioning grooves, the voice coil installation positioning grooves are arranged at equal intervals along the circumference, and each voice coil installation positioning groove is internally provided with one voice coil so as to enable the voice coil to be connected with the voice coil bracket; the sound film bracket is provided with three or more magnetic circuit mounting holes, the magnetic circuit mounting holes are arranged at equal intervals along the circumference, and each magnetic circuit mounting hole is respectively provided with one magnetic circuit assembly.
9. The mid-high range speaker of claim 7, wherein: the voice diaphragm is provided with an upward arched spherical part and a yoke ring surrounding the outer edge of the spherical part, and the yoke ring is fixedly connected with the voice coil support.
10. The mid-high range speaker of claim 6, wherein: the medium and high sound loudspeaker further comprises a sound diffuser, and the sound diffuser cover is arranged on the sound film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921101435.XU CN210053568U (en) | 2019-07-15 | 2019-07-15 | Multi-channel input driven small-sized loudspeaker and medium-high-sound loudspeaker |
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| CN201921101435.XU CN210053568U (en) | 2019-07-15 | 2019-07-15 | Multi-channel input driven small-sized loudspeaker and medium-high-sound loudspeaker |
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| CN210053568U true CN210053568U (en) | 2020-02-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110248297A (en) * | 2019-07-15 | 2019-09-17 | 苏州茹声电子有限公司 | A kind of miniature loudspeaker and medium and high pitch loudspeaker of multichannel input driving |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110248297A (en) * | 2019-07-15 | 2019-09-17 | 苏州茹声电子有限公司 | A kind of miniature loudspeaker and medium and high pitch loudspeaker of multichannel input driving |
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