Middle-high pitch loudspeaker and small loudspeaker driven by multipath input

Abstract

The invention discloses a multi-input-driven mid-high pitch loudspeaker and a small loudspeaker, which are used for increasing the sensitivity of the loudspeaker, improving the definition of the loudspeaker and reducing distortion. The invention relates to a multi-path input driven mid-high pitch loudspeaker, which comprises a voice diaphragm bracket and a voice diaphragm arranged on the voice diaphragm bracket, and further comprises a plurality of input driving mechanisms and a sound diffuser, and the sound diffuser covers the voice diaphragm; 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 is provided with a magnetic gap, and the voice coil can be inserted into the magnetic gap in an up-down moving manner; the voice diaphragm bracket is provided with a plurality of magnetic circuit mounting holes; the voice coils penetrate through the corresponding magnetic circuit mounting holes, and the lower parts of the voice coils are inserted into the magnetic gaps; the lower portion of the voice diaphragm is fixedly connected with a flat-plate-shaped voice coil support, the voice coil support is provided with a plurality of voice coil installation positioning grooves, and each voice coil installation positioning groove is provided with at most one voice coil.

Description

[0001] This application is a divisional application of the invention patent with application number CN201910634995X filed on July 15, 2019. Technical Field

[0002] The invention belongs to the field of loudspeakers, and relates to a small loudspeaker driven by multiple inputs and a mid-high pitch loudspeaker driven by multiple inputs. Background Art

[0003] The existing traditional small speakers generally adopt the structure of a disc-shaped sound cone combined with a voice coil made of a plastic film material, and a fixed voice coil step is provided at the center of the bottom of the sound cone, and one end of the voice coil for a single-channel signal input is fixed on the center step at the bottom of the sound cone to form a small speaker vibration system. This small speaker can only be applied to single-channel signal input, and single-channel audio signal input has limitations on original sound reproduction, and a single voice coil and a sound cone have high requirements on the rigidity of the sound cone material when combined. Alternatively, a fixed voice coil step is provided at the center of the bottom of the sound cone, and one end of the voice coil for multi-channel signal input is fixed on the center step at the bottom of the sound cone, wherein the voice coil is formed by stacking multiple sets of coils from the inside to the outside, forming a small speaker vibration system. This small speaker can be applied to multi-channel signal input, but because this speaker has multiple sets of coils wound on one voice coil, and multiple sets of coils are wound on one voice coil, the weight of the voice coil is increased, and the sensitivity of the small speaker may be reduced, which has limitations on original sound reproduction.

[0004] As for mid-high frequency loudspeakers, most of them adopt a dome sound film combined with a voice coil structure, and one end of the voice coil is directly fixed on the center positioning step on the back of the dome sound film to form a high-frequency vibration system. This type of mid-high frequency loudspeaker can only be used for single-channel signal input, which has limitations on original sound reproduction, and the combination of a single voice coil and a sound film has high requirements for the rigidity of the sound film material. Alternatively, a fixed voice coil step is set at the center of the bottom of the sound film, and one end of the voice coil that can input multiple signals is fixed on the center step at the bottom of the sound film, wherein the voice coil is formed by stacking multiple groups of coils from the inside to the outside, forming a mid-high frequency sound vibration system. This type of mid-high frequency loudspeaker can be used for multiple signal inputs, but because this type of loudspeaker has multiple groups of coils wound on one voice coil, the weight of the voice coil is increased, and the sensitivity of the mid-high frequency loudspeaker may be reduced, which has limitations on original sound reproduction. Summary of the invention

[0005] In view of the above problems, the first object of the present invention is to provide a small speaker driven by multiple inputs, increase the sensitivity of the small speaker, improve the clarity of the small speaker, and reduce distortion. The second object of the present invention is to provide a mid-high frequency speaker driven by multiple inputs, increase the sensitivity of the mid-high frequency speaker, improve the clarity of the mid-high frequency speaker, and reduce distortion.

[0006] In order to achieve the above object, a technical solution adopted by the present invention is:

[0007] A technical solution adopted by the present invention is:

[0008] A mid-high frequency loudspeaker with multi-channel input drive, comprising a diaphragm support and a diaphragm arranged on the diaphragm support, the mid-high frequency loudspeaker also comprising a plurality of input drive mechanisms and a sound diffuser, the sound diffuser being covered on the diaphragm; each of the input drive mechanisms comprises a voice coil and a magnetic circuit component for driving the voice coil to vibrate, the magnetic circuit component having a magnetic gap, the voice coil being inserted in the magnetic gap so as to be movable up and down; a plurality of magnetic circuit mounting holes are provided on the diaphragm support, the voice coil passes through the corresponding magnetic circuit mounting holes and its lower part is inserted in the magnetic gap; a flat voice coil support is fixedly connected to the lower part of the diaphragm, the voice coil support is provided with a plurality of voice coil mounting positioning grooves, each of the voice coil mounting positioning grooves being provided with at most one voice coil.

[0009] The mid-high frequency loudspeaker in the present invention is a mid-high frequency loudspeaker without a positioning support. Here, the term "mid-high frequency loudspeaker" refers to a loudspeaker with a frequency between 1500 and 20000 Hz.

[0010] Preferably, the number of the input drive mechanisms is three or more, and the three or more input drive mechanisms are arranged at equal intervals along a circumference, the voice coil support is circular as a whole, and the center of the circumference coincides with the center of the voice coil support. In a loudspeaker whose voice coil support is substantially circular, a plurality of input drive mechanisms are arranged in a circular and balanced manner.

[0011] Optionally, three or more of the input drive mechanisms are arranged linearly or in an array. In a loudspeaker whose voice coil support is generally elliptical or rectangular, a plurality of input drive mechanisms are arranged linearly or in an array. The sound membrane is elliptical or rectangular;

[0012] More preferably, the voice coil bracket is provided with three or more voice coil mounting positioning grooves, the voice coil mounting positioning grooves are arranged at equal intervals along the circumference, and a voice coil is respectively arranged in each of the voice coil mounting positioning grooves so that the voice coil is connected to the voice coil bracket; the sound membrane 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 a magnetic circuit component is respectively arranged in each of the magnetic circuit mounting holes.

[0013] More preferably, the sound membrane has an upwardly arched spherical portion and a yoke ring formed around the outer edge of the spherical portion, and the yoke ring is fixedly connected to the voice coil bracket.

[0014] Preferably, the magnetic circuit assembly includes a U-iron with an inner cavity, a 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 at most one U-iron is arranged under each magnetic circuit mounting hole.

[0015] Preferably, a plurality of pairs of audio signal input terminals are provided at the edge of the diaphragm support, and each pair of audio signal input terminals is electrically connected to the leads of a voice coil respectively.

[0016] Preferably, the magnetic steel is a neodymium magnetic steel or a ferrite magnetic steel.

[0017] The present invention also adopts the following technical solution:

[0018] A small speaker with multi-channel input drive, comprising a basin frame and a sound basin arranged on the basin frame, the small speaker also comprising a plurality of input drive mechanisms, each of the input drive mechanisms respectively comprising a voice coil and a magnetic circuit component for driving the voice coil to vibrate, the magnetic circuit component comprising a U-iron with an inner cavity, a neodymium magnet and a pole core arranged in the U-iron, a magnetic gap is formed between the neodymium magnet and the pole core and the inner wall of the U-iron, the voice coil can be inserted in the magnetic gap so as to move up and down; a plurality of magnetic circuit mounting holes are arranged on the basin frame, at most one U-iron is arranged below each of the magnetic circuit mounting holes, and the voice coil moves from the corresponding The magnetic circuit mounting hole passes through and its lower part is inserted into the magnetic gap; the sound basin has a flat sound basin bottom, and a plurality of voice coil mounting positioning holes are arranged on the sound basin bottom, and at most one voice coil is arranged at each voice coil mounting positioning hole; the number of the input drive mechanisms is three or more, and the three or more input drive mechanisms are arranged at equal intervals along a circle, the bottom of the sound basin is circular as a whole, and the center of the circle coincides with the center of the bottom of the sound basin; a plurality of pairs of audio signal input terminals are arranged at the edge of the basin frame, and each pair of the audio signal input terminals is electrically connected to the lead of one of the voice coils.

[0019] The small speaker in the present invention is a small speaker without a positioning support. Here, the term "small speaker" refers to a speaker with a size less than 100 mm, which is suitable for use in equipment such as headphones, and has a frequency range of 50 to 15000 Hz.

[0020] Preferably, in a loudspeaker with a substantially circular voice coil, a plurality of input drive mechanisms are arranged in a circular and balanced manner.

[0021] Optionally, three or more of the input drive mechanisms are arranged linearly or in an array. In a speaker that is substantially elliptical or rectangular, a plurality of input drive mechanisms are arranged linearly or in an array, and the cone is elliptical or rectangular.

[0022] More preferably, the sound cone has a sound cone bottom that is circular and flat as a whole, and the center of the circumference coincides with the center of the sound cone bottom.

[0023] Furthermore, three or more voice coil installation positioning holes are opened on the bottom of the sound basin, and the voice coil installation positioning holes are arranged at equal intervals along the circumference, and a voice coil is respectively arranged in each of the voice coil installation positioning holes to connect the voice coil to the bottom of the sound basin.

[0024] Furthermore, the sound basin also has a conical edge portion extending obliquely upward from the outer edge of the bottom of the sound basin, and the conical edge portion is fixedly connected to the basin frame through a yoke ring.

[0025] More preferably, three or more magnetic circuit mounting holes are formed on the basin frame, and the magnetic circuit mounting holes are arranged at equal intervals along the circumference, and one magnetic circuit component is respectively disposed in each of the magnetic circuit mounting holes.

[0026] Preferably, the upper edge of the U iron is fixedly connected to the lower surface of the basin frame.

[0027] Preferably, the magnetic steel is a neodymium magnetic steel or a ferrite magnetic steel.

[0028] Preferably, the magnetic circuit assembly is composed of the U-iron, a magnetic pole core and a neodymium magnet disposed in the U-iron, and the lower surface of the magnetic pole core is in contact with the upper surface of the neodymium magnet.

[0029] The present invention adopts the above solution, which has the following advantages compared with the prior art:

[0030] The multi-channel input driven small or medium-high frequency loudspeaker of the present invention has an ingenious and reasonable structure, receives audio signal inputs respectively through multiple voice coils, and has better original sound reproduction and distortion than traditional loudspeakers; by adopting an input drive structure composed of multiple magnetic circuit components, the sensitivity of the loudspeaker is increased and the clarity of the loudspeaker is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0032] Figure 1 is an exploded schematic diagram of a small speaker of Example 1;

[0033] Figure 2 for Figure 1 Schematic diagram of the basin frame after installing the voice coil;

[0034] Figure 3 for Figure 1 Schematic diagram of the small speaker after assembly;

[0035] Figure 4 It is an exploded schematic diagram of a mid-high frequency loudspeaker of Example 2;

[0036] Figure 5 for Figure 4 Schematic diagram of the diaphragm bracket after the voice coil is installed;

[0037] Figure 6 for Figure 4 Schematic diagram of the mid-high frequency speaker after assembly.

[0038] in:

[0039] 1. Basin frame; 10. Magnetic circuit mounting hole; 2. Sound basin; 20. Voice coil mounting positioning hole; 21. Sound basin bottom; 22. Conical edge; 3. Input drive mechanism; 31. Voice coil; 310. Lead wire; 32. Pole core; 33. Neodymium magnet; 34. U iron; 4. Yoke ring; 5. Audio signal input terminal;

[0040] 1', diaphragm bracket; 10', magnetic circuit mounting hole; 2', diaphragm; 20', spherical part; 21', yoke ring; 22', voice coil bracket; 3', input drive mechanism; 31', voice coil; 310', lead wire; 32', pole core; 33', neodymium magnet; 34', U iron; 4', sound diffusion cover; 5', audio signal input terminal. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0042] Example 1

[0043] This embodiment provides a small speaker driven by multiple inputs, which is specifically a small speaker without a positioning support. Here, multiple inputs refer to having multiple audio signal inputs, and the multiple audio signals are input to multiple voice coils, which jointly drive the speaker to produce sound. Figures 1 to 3As shown, the multi-channel input driven loudspeaker comprises: a basin frame 1, a sound cone 2 and a plurality of input drive mechanisms 3. The sound cone 2 is used for vibrating and sounding, and is fixedly arranged on the basin frame 1. Each input drive mechanism 3 comprises a voice coil 31 and a magnetic circuit assembly 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 at most one magnetic circuit assembly is arranged at each magnetic circuit mounting hole 10; the sound 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, a plurality of driving input mechanisms are installed on the basin frame 1 and the sound cone 2. The number of the input drive mechanisms 3 is three or more, so as to increase the driving energy of the loudspeaker, and the three or more input drive mechanisms 3 are arranged at equal intervals along a circumference. The sound cone 2 has a sound cone bottom 21 which is a circular flat plate as a whole, and the center of the circle coincides with the center of the sound cone bottom 21, that is, the plurality of input drive mechanisms 3 are arranged at equal intervals along the circumferential direction of the sound cone bottom 21. Correspondingly, three or more voice coil installation holes 20 are provided on the bottom 21 of the sound basin, and the voice coil installation holes 20 are arranged at equal intervals along the circumference, and a voice coil 31 is respectively provided in each voice coil installation hole 20 so that the voice coil 31 is connected to the bottom 21 of the sound basin; three or more magnetic circuit installation holes 10 are provided on the basin frame 1, and the magnetic circuit installation holes 10 are arranged at equal intervals along the circumference, and a magnetic circuit component is respectively provided in each magnetic circuit installation hole 10. Figure 1-3 As shown, the number of the input drive mechanism 3 , the voice coil mounting positioning hole 20 and the magnetic circuit mounting hole 10 are all three, and they are arranged in a ring around the center of the bottom 21 of the sound basin.

[0044] In this embodiment, a sound basin with a circular bottom is preferably used, and multiple input drive mechanisms are arranged in a ring around the center of the bottom of the sound basin. In other embodiments, the sound basin has an elliptical or rectangular bottom, and multiple input drive mechanisms are arranged linearly or in an array.

[0045] In this embodiment, the basin frame 1 is made of plastic using a process such as injection molding. It is easy to form and has a certain strength. The magnetic circuit mounting hole 10 is a through hole that passes through the basin frame 1 from top to bottom. The sound basin 2 also has a conical edge portion 22 that extends upward from the outer edge of the bottom 21 of the sound basin, and the conical edge portion 22 is arranged around the bottom 21 of the sound basin. The sound basin 2 is made of pulp, plastic (such as PP (polypropylene)), bulletproof fiber or aluminum alloy. The sound basin 2 is light in weight, has good damping elasticity and rigidity, is resistant to high and low temperatures, and is waterproof and mildew-proof. In addition, the conical edge portion 22 of the sound basin 2 is fixedly connected to the basin frame 1 through a circle of yoke rings 4, and the yoke rings 4 are made of sponge, rubber or cloth. The sound basin 2 using the above shape is superior to the traditional conical speaker in terms of the width of the directivity expansion, and is lower in height than the traditional conical sound basin 2, which is conducive to reducing the overall height of the speaker.

[0046] The input drive mechanism 3 is specifically composed of a voice coil 31, a magnetic pole core 32, a neodymium magnet 33 and a U iron 34. In each input drive mechanism 3, the upper end of the voice coil 31 is fixedly connected to the sound basin 2, so as to drive the sound basin 2 to vibrate; the voice coil 31 passes through the corresponding magnetic circuit mounting hole 10. The U iron 34 has an inner cavity and an open upper end. The upper edge of the U 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 connected to the inner cavity of the U iron 34; the pole core 32 and the neodymium magnet 33 are stacked from top to bottom and fixedly arranged in the inner cavity of the U iron 34 to form a magnetic circuit component; the lower surface of the pole core 32 is tightly fitted with the upper surface of the neodymium magnet 33; there is a gap between the pole core 32 and the neodymium magnet 33 and the inner wall of the U iron 34, thereby forming a magnetic gap surrounding the pole core 32 and the neodymium magnet 33, and the lower end of the voice coil 31 is inserted downward from the magnetic circuit mounting hole 10 into the magnetic gap, and there is a gap between the voice coil 31 and the pole core 32 and the neodymium magnet 33, and there is also a gap between the voice coil 31 and the inner wall of the U iron 34, so that it can move up and down in the magnetic gap.

[0047] The magnetic circuit assembly in this embodiment uses the above-mentioned neodymium magnet, which has the advantages of small size and light weight. In some other embodiments, the above-mentioned neodymium magnet in the magnetic circuit assembly can be replaced with ferrite magnet, thereby reducing the cost of the magnetic circuit assembly.

[0048] like Figure 2 As shown, multiple pairs of audio signal input terminals 5 are provided at the edge of the basin frame 1, and each pair of audio signal input terminals 5 is electrically connected to the lead of a voice coil 31. Each pair of audio signal input terminals 5 includes a positive terminal and a negative terminal. One of the leads of each voice coil 31 is electrically connected to the positive terminal of a 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 by the pair of audio signal input terminals 5. Thus, four voice coils 31 are driven simultaneously through three pairs of audio signal input terminals 5. By providing multiple audio signal input integrated terminals on the basin frame 1, the positive and negative leads of each voice coil 31 can be connected to the terminals of the basin frame 1 respectively. This connection method not only simplifies the manufacture of multi-channel input drive speakers, but also facilitates the connection of audio signal input.

[0049] The working principle of the multi-channel input driven small speaker is as follows: the audio signal is input to the multiple voice coils 31 through the audio signal input terminal 5 on the basin frame 1, and the multiple voice coils 31 move up and down synchronously under the action of the magnetic circuit component, thereby driving the sound basin 2 to vibrate and make sound. The multi-channel input driven small speaker of the present invention adopts a sound basin 2 with a flat bottom, and three or more voice coil installation positioning holes 20 are formed on the plane formed by the bottom 21 of the sound basin, and are tightly combined with three or more voice coils 31, and the voice coils 31 are tightly combined with three or more positioning support pieces 33 to form three or more input driving mechanisms 3, and three or more magnetic circuit components are used to drive the voice coils 31, and the sound basin 2 is pushed by three or more voice coils 31, so that not only the product height can be reduced, but also the product directivity can be widened, and through multiple audio signal inputs, the product distortion can be reduced, the speaker sensitivity can be increased, and the speaker clarity can be improved. The integrated terminal is used to simplify the connection of the product itself and facilitate the audio signal input connection.

[0050] The structure of the small speaker is ingenious and reasonable. By adopting a flat bottom with a conical sound cone structure, the directivity width of the flat bottom with a conical sound cone is better than that of a traditional speaker. By receiving audio signal inputs respectively through three or more voice coils, the original sound playback and distortion are better than those of a traditional speaker. By adopting a flat bottom with a conical sound cone shape, the sound cone height is lower than that of a traditional conical sound cone, and the height of the product can also be reduced by reducing the sound cone height. By adopting an input drive structure composed of three or more voice coils and three or more magnetic circuit components, the sensitivity of the small speaker is increased. By closely connecting the flat bottom with a conical sound cone and the three or more voice coils, the three or more voice coils are driven up and down in the U-iron magnetic circuit through three or more audio signal inputs to push the sound cone to produce sound.

[0051] Example 2

[0052] This embodiment provides a mid-high frequency loudspeaker with multi-channel input drive, which is specifically a mid-high frequency loudspeaker without a positioning support. Here, multi-channel input refers to having multiple audio signal inputs, and the multiple audio signals are input to multiple voice coils, and the multiple voice coils jointly drive the loudspeaker to produce sound. Figures 4 to 6As shown, the mid-high frequency loudspeaker comprises: a diaphragm support 1', a diaphragm 2' and a plurality of input drive mechanisms 3'. The diaphragm 2' is used for vibrating and making sounds, and is fixedly arranged on the diaphragm support 1'. Each input drive mechanism 3' comprises a voice coil 31' and a magnetic circuit assembly for driving the voice coil 31' to vibrate; wherein, the diaphragm support 1' is provided with a plurality of magnetic circuit mounting holes 10', and at most one magnetic circuit assembly is arranged at each magnetic circuit mounting hole 10'; a voice coil support 22' is fixedly connected to the lower part of the diaphragm 2', and a plurality of voice coil mounting positioning grooves (not shown in the figure) are provided on the lower surface of the voice coil support 22', and at most one voice coil 31' is arranged at each voice coil mounting positioning groove. That is, a plurality of drive input mechanisms are installed on the diaphragm support 1' and the diaphragm 2'. The number of the input drive mechanisms 3' is three or more, so as to increase the driving energy of the loudspeaker, and three or more input drive mechanisms 3' are arranged at equal intervals along a circle. The voice coil bracket 22' is circular and flat as a whole, and the center of the circle coincides with the center of the voice coil bracket 22', that is, multiple input drive mechanisms 3' are arranged at equal intervals along the circumferential direction of the voice coil bracket 22'. Correspondingly, three or more voice coil mounting positioning grooves are provided on the lower surface of the voice coil bracket 22', and the voice coil mounting positioning grooves are arranged at equal intervals along the circumference, and a voice coil 31' is provided in each voice coil mounting positioning groove to connect the voice coil 31' to the voice coil bracket 22'; three or more magnetic circuit mounting holes 10' are provided on the sound membrane bracket 1', and the magnetic circuit mounting holes 10' are arranged at equal intervals along the circumference, and a magnetic circuit component is provided in each magnetic circuit mounting hole 10'. Specifically, Figure 4 As shown, the number of the input drive mechanism 3', the voice coil mounting positioning groove and the magnetic circuit mounting hole 10' are all three, and they are arranged in a ring shape around the center of the voice coil support 22'.

[0053] In this embodiment, a voice coil support 22' that is circular in shape is preferably used, and a plurality of input drive mechanisms 3' are arranged in a ring shape around the center of the voice coil support 22'. In other embodiments, the voice coil support 22' is elliptical or rectangular in shape, and a plurality of input drive mechanisms 3' are arranged linearly or in an array.

[0054] 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 the two are integrally formed or fixedly connected. The yoke ring 21' is fixedly connected to the voice coil bracket 22'. In this embodiment, the yoke ring 21' and the voice coil bracket 22' are bonded together to form a sound cavity between the spherical portion 20' and the voice coil bracket 22'. The voice coil bracket 22' is a circular flat sheet, which is fixedly connected to the bottom of the spherical portion 20' through the yoke ring 21'.

[0055] The input drive mechanism 3' is specifically composed of a voice coil 31', a magnetic pole core 32', a neodymium magnet 33' and a U-iron 34'. In each input drive mechanism 3', the upper end of the voice coil 31' is fixedly connected to the voice coil bracket 22', so as to drive the voice coil bracket 22' and the sound membrane 2' connected thereto to vibrate; the voice coil 31' passes through the corresponding magnetic circuit mounting hole 10'. The U-iron 34' has an inner cavity and an open upper end. The upper edge of the U-iron 34' is fixedly connected to the lower surface of the sound membrane bracket 1' adjacent to the magnetic circuit mounting hole 10', and the magnetic circuit mounting hole 10' is connected to the inner cavity of the U-iron 34'; the magnetic pole core 32' and the neodymium magnet 33' are stacked from top to bottom and fixedly arranged in the inner cavity of the U-iron 34' to form a magnetic circuit assembly; the lower surface of the magnetic pole core 32' is tightly fitted with the upper surface of the neodymium magnet 33'. There is a gap between the pole core 32' and the neodymium magnet 33' and the inner wall of the U iron 34', thereby forming a magnetic gap surrounding the pole core 32' and the neodymium magnet 33'. The lower end of the voice coil 31' is inserted downward from the magnetic circuit mounting hole 10' into the magnetic gap. There is a gap between the voice coil 31' and the pole core 32' and the neodymium magnet 33', and there is also a gap between the voice coil 31' and the inner wall of the U iron 34', so that it can move up and down in the magnetic gap.

[0056] The mid-high frequency loudspeaker further comprises a sound diffuser 4', the sound diffuser 4' is covered on the sound membrane 2', and the sound diffuser 4' is fixed on the sound membrane bracket 1'.

[0057] like Figure 5 As shown, a plurality of pairs of audio signal input terminals 5' are provided at the edge of the diaphragm support 1', and each pair of audio signal input terminals 5' is electrically connected to the lead of a voice coil 31'. Each pair of audio signal input terminals 5' includes a positive terminal and a negative terminal, one of the leads of each voice coil 31' is electrically connected to the positive terminal in a pair of audio signal input terminals 5', and the other lead is electrically connected to the negative terminal in the pair of audio signal input terminals 5', so as to receive the audio signal (analog signal or digital signal) input by the pair of audio signal input terminals 5'. Thus, four voice coils 31' are driven simultaneously through three pairs of audio signal input terminals 5'. By providing a plurality of integrated audio signal input terminals on the diaphragm support 1', the positive and negative leads of each voice coil 31' can be connected to the terminals of the diaphragm support 1' respectively. This connection method not only simplifies the manufacture of multi-channel input drive speakers, but also facilitates the connection of audio signal input.

[0058] The working principle of the mid-high frequency loudspeaker driven by multiple inputs is as follows: the audio signal is input to the multiple voice coils 31' through the audio signal input terminal 5' on the sound membrane bracket 1', and the multiple voice coils 31' thus move up and down synchronously under the action of the magnetic circuit component, thereby pushing the voice coil bracket 22' and the sound membrane 2' connected thereto to vibrate and produce sound. The mid-high frequency loudspeaker driven by multiple inputs of the present invention pushes the sound membrane 2' through three or more voice coils 31', thereby reducing product distortion, increasing speaker sensitivity, and improving speaker clarity. The use of integrated terminals simplifies the connection of the product itself and facilitates the connection of audio signal input.

[0059] The above embodiment is only for illustrating the technical concept and features of the present invention, and is a preferred embodiment. Its purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A mid-high frequency loudspeaker with multi-channel input drive, comprising a diaphragm support and a diaphragm arranged on the diaphragm support, characterized in that: The mid-high frequency loudspeaker also includes a plurality of input drive mechanisms and a sound diffuser, wherein the sound diffuser is covered on the sound diaphragm; each of the input drive mechanisms includes a voice coil and a magnetic circuit component for driving the voice coil to vibrate, wherein the magnetic circuit component has a magnetic gap, and the voice coil is inserted in the magnetic gap so as to be movable up and down; a plurality of magnetic circuit mounting holes are provided on the sound diaphragm bracket, and the voice coil passes through the corresponding magnetic circuit mounting holes and its lower part is inserted in the magnetic gap; a flat voice coil bracket is fixedly connected to the lower part of the sound diaphragm, and a plurality of voice coil mounting positioning grooves are provided on the voice coil bracket, and each of the voice coil mounting positioning grooves is provided with at most one voice coil.

2. The mid-high frequency loudspeaker according to claim 1, characterized in that: The number of the input drive mechanisms is three or more, and the three or more input drive mechanisms are arranged at equal intervals along a circumference. The voice coil support is circular as a whole, and the center of the circumference coincides with the center of the voice coil support.

3. The mid-high frequency loudspeaker according to claim 2, characterized in that: The voice coil bracket is provided with three or more voice coil mounting positioning grooves, which are arranged at equal intervals along the circumference, and a voice coil is respectively arranged in each of the voice coil mounting positioning grooves so that the voice coil is connected to the voice coil bracket; the sound membrane bracket is provided with three or more magnetic circuit mounting holes, which are arranged at equal intervals along the circumference, and a magnetic circuit component is respectively arranged in each of the magnetic circuit mounting holes.

4. The mid-high frequency loudspeaker according to claim 1, characterized in that: The sound membrane has an upwardly arched spherical portion and a yoke ring formed around the outer edge of the spherical portion, and the yoke ring is fixedly connected to the voice coil bracket.

5. The mid-high frequency loudspeaker according to claim 1, characterized in that: The magnetic circuit assembly includes a U-iron with an inner cavity, a 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 at most one U-iron is arranged under each magnetic circuit mounting hole.

6. The mid-high frequency loudspeaker according to claim 5, characterized in that: A plurality of pairs of audio signal input terminals are arranged at the edge of the sound membrane support, and each pair of audio signal input terminals is electrically connected to the lead of a voice coil respectively.

7. A small speaker with multiple input drives, comprising a basin frame and a sound basin arranged on the basin frame, characterized in that: The small speaker also includes a plurality of input drive mechanisms, each of which includes a voice coil and a magnetic circuit component for driving the voice coil to vibrate, the magnetic circuit component includes a U-iron with an inner cavity, a neodymium magnet and a magnetic pole core arranged in the U-iron, a magnetic gap is formed between the neodymium magnet and the magnetic pole core and the inner wall of the U-iron, and the voice coil can be inserted in the magnetic gap so as to move up and down; a plurality of magnetic circuit mounting holes are provided on the basin frame, and at most one U-iron is provided below each of the magnetic circuit mounting holes, the voice coil passes through the corresponding magnetic circuit mounting hole and its lower part is inserted in the corresponding magnetic circuit mounting hole. The sound cone has a flat bottom, and a plurality of voice coil mounting holes are arranged on the bottom of the sound cone, and at most one voice coil is arranged at each voice coil mounting positioning hole; the number of the input drive mechanisms is three or more, and the three or more input drive mechanisms are arranged at equal intervals along a circle, the bottom of the sound cone is circular as a whole, and the center of the circle coincides with the center of the bottom of the sound cone; a plurality of pairs of audio signal input terminals are arranged at the edge of the basin frame, and each pair of the audio signal input terminals is electrically connected to the lead of one of the voice coils.

8. The small speaker according to claim 7, characterized in that: The bottom of the sound basin is provided with three or more voice coil mounting positioning holes, which are arranged at equal intervals along the circumference, and a voice coil is respectively arranged in each of the voice coil mounting positioning holes so that the voice coil is connected to the bottom of the sound basin; the basin frame is provided with three or more magnetic circuit mounting holes, which are arranged at equal intervals along the circumference, and a magnetic circuit assembly is respectively arranged in each of the magnetic circuit mounting holes.

9. The small speaker according to claim 8, characterized in that: The sound basin also has a conical edge portion extending obliquely upward from the outer edge of the bottom of the sound basin, and the conical edge portion is fixedly connected to the basin frame through a yoke ring.

10. The small speaker according to claim 7, characterized in that: The magnetic circuit component is composed of the U iron, a magnetic pole core and a neodymium magnet arranged in the U iron, and the lower surface of the magnetic pole core is in contact with the upper surface of the neodymium magnet.

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