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CN-122002198-A - Back-to-back loudspeaker vibrating in same direction and sounding equipment

CN122002198ACN 122002198 ACN122002198 ACN 122002198ACN-122002198-A

Abstract

The invention belongs to the technical field of speakers, and discloses a back-to-back speaker capable of vibrating in the same direction and sound production equipment. Two vibrating diaphragm assemblies set up along first direction interval, every vibrating diaphragm assembly all is equipped with the first mounting groove that extends along the second direction, every vibrating diaphragm assembly all is equipped with the bulge that sets up towards each other, support assembly connects in vibrating diaphragm assembly, every support assembly has the second mounting groove that corresponds the setting with first mounting groove, the voice coil loudspeaker voice coil passes the second mounting groove along the both sides of first direction and with first mounting groove sealing connection, two permanent magnets are located the voice coil loudspeaker voice coil along the both sides of third direction, be formed with the inner chamber sound outlet between the tip of every permanent magnet along the second direction and two support assemblies. The loudspeaker can fully utilize the back space of the vibrating diaphragm assembly, has good acoustic performance and sound effect, is not limited by the length-width ratio, and can better meet the requirements of intelligent equipment.

Inventors

  • QI XIN
  • HUANG HANXIONG
  • XIE SHOUHUA

Assignees

  • 国光电器股份有限公司

Dates

Publication Date
20260508
Application Date
20260202

Claims (10)

  1. 1. A back-to-back speaker vibrating in the same direction comprising: The two vibrating diaphragm assemblies (100) are arranged at intervals along a first direction, each vibrating diaphragm assembly (100) is provided with a first mounting groove (111) extending along a second direction, and each vibrating diaphragm assembly (100) is provided with a protruding part (121) protruding towards each other; Two bracket assemblies (200), wherein the bracket assemblies (200) are connected to the vibrating diaphragm assemblies (100), the two bracket assemblies (200) are respectively positioned at one side of the two vibrating diaphragm assemblies (100) facing each other, and each bracket assembly (200) is provided with a second mounting groove (201) which is arranged corresponding to the first mounting groove (111); A voice coil (300), wherein the voice coil (300) passes through the second mounting groove (201) along two sides of the first direction and is in sealing connection with the first mounting groove (111); The two permanent magnets (400), two permanent magnets (400) are located in the two sides of the voice coil (300) along the third direction, each permanent magnet (400) is connected with two support components (200) respectively in the two sides of the voice coil along the first direction, the magnetic poles of the permanent magnets (400) are located in the two ends of the permanent magnets (400) along the first direction, the magnetic poles of the two permanent magnets (400) are reversely arranged, and an inner cavity sound outlet (101) is formed between the end of each permanent magnet (400) along the second direction and the two support components (200), wherein: the first direction, the second direction and the third direction are arranged in a pairwise perpendicular mode.
  2. 2. The back-to-back speaker of claim 1, wherein the voice coil (300) comprises a plurality of layers of circuit boards (310), and the layers of the circuit boards (310) are even, each layer of the circuit boards (310) has an annular flat cable (312), connection rows (311) are provided on the inner side and the outer side of the annular flat cable (312), and the annular flat cables (312) on two adjacent circuit boards (310) are electrically connected through the connection rows (311), wherein: The connection rows (311) of the uppermost annular flat cable (312) located on the outer side are electrically connected with the wires, the two connection rows (311) of the adjacent two annular flat cables (312) located on the inner side are electrically connected, and the connection row (311) of the annular flat cable (312) located on the outer side of the lowermost annular flat cable is electrically connected with the wires.
  3. 3. The back-to-back speaker of claim 1, wherein the bracket assembly (200) comprises a basin frame (210) and a top plate (220), a fixing groove (211) is provided on the basin frame (210), and the top plate (220) is fixed in the fixing groove (211).
  4. 4. A back-to-back speaker vibrating in the same direction as the claim 3, wherein a positioning protrusion (221) is provided on one of the groove wall of the fixing groove (211) and the outer peripheral wall of the top plate (220), a positioning groove (212) is provided on the other one of the groove wall of the fixing groove (211) and the outer peripheral wall of the top plate (220), and the positioning protrusion (221) can be fitted on the positioning groove (212).
  5. 5. The back-to-back speaker of co-vibration according to claim 4, wherein the positioning protrusion (221) and the positioning groove (212) are plural, and plural positioning grooves (212) or plural positioning protrusions (221) are provided on both sides of the top plate (220) in the third direction.
  6. 6. The back-to-back speaker of claim 5, wherein the second mounting groove (201) includes a first groove body (2011) and a second groove body (2012), the first groove body (2011) is disposed on the basin frame (210), the cross section of the first groove body (2011) is gradually reduced in a direction close to the permanent magnet (400), the second groove body (2012) is disposed on the top plate (220), the second groove body (2012) includes a flat section and divergent sections connected to both ends of the flat section, and a large end of the divergent sections is disposed in communication with the flat section.
  7. 7. The back-to-back speaker of claim 1, wherein each of the bracket assemblies (200) has a half hole (213) at both ends in the second direction, two of the half holes (213) are located at both sides of the second mounting groove (201), the half holes (213) on the two bracket assemblies (200) are spliced into a lead hole, and at least one of the two lead holes is matched with a wire of the voice coil (300).
  8. 8. The back-to-back speaker of claim 1, wherein the bracket assembly (200) is further provided with a positioning post (214) and a positioning notch (215), the positioning post (214) and the positioning notch (215) being located at one side of the second mounting groove (201) along the second direction, wherein: Of the two bracket assemblies (200), the positioning post (214) of one bracket assembly (200) can be inserted into the positioning notch (215) of the other bracket assembly (200).
  9. 9. The back-to-back speaker of claim 1, wherein the diaphragm assembly (100) comprises a centering plate (110) and a sound membrane (120), the first mounting groove (111) is formed in the centering plate (110), a third mounting groove (122) corresponding to the first mounting groove (111) is formed in the sound membrane (120), the centering plate (110) is mounted on the sound membrane (120), an outer edge of the sound membrane (120) is connected with the bracket assembly (200) through a copper ring (130), and the protruding portion (121) is formed on the sound membrane (120) and surrounds the centering plate (110), wherein: And sealing glue (500) is filled between two ends of the voice coil (300) along the first direction and the first mounting groove (111) on the centering plate (110) so as to fix the voice coil (300) on the centering plate (110).
  10. 10. Sound production equipment characterized in that includes shell (10) and back-to-back speaker of the same-direction vibration of any one of claims 1-9, shell (10) are provided with first sound outlet (11) and second sound outlet (12) respectively along the opposite both sides that set up of third direction, first sound outlet (11) with second sound outlet (12) stagger along first direction and distribute, shell (10) with back-to-back speaker of same-direction vibration define first sound outlet channel (13) and second sound outlet channel (14), first sound outlet channel (13) with first sound outlet (11) intercommunication, second sound outlet channel (14) with second sound outlet (12) intercommunication.

Description

Back-to-back loudspeaker vibrating in same direction and sounding equipment Technical Field The invention relates to the technical field of speakers, in particular to a back-to-back speaker vibrating in the same direction and sound production equipment. Background The bulge on two diaphragms of rectangular shape micro-speaker on the market at present is deviating from each other and sets up, and this kind of structure leads to the back radiation of vibrating diaphragm not very much to utilize on the one hand, and the aspect ratio of on the other hand this kind of structure is less, and current intelligent glasses then require narrow frame, need the great speaker structure of aspect ratio, therefore current rectangular shape micro-speaker can not satisfy intelligent glasses's needs well. In addition, as the space in the electronic equipment is smaller and smaller, the BL value (product of the gap magnetic induction intensity B and the effective voice coil length L) of the loudspeaker is limited by the space size, so that the number of magnetic force lines passing through the voice coil is small, the magnetic field force borne by the voice coil is small, and the sensitivity of the sounding device is low, and the overall acoustic performance and the sound effect are poor. Disclosure of Invention The first object of the present invention is to provide a back-to-back speaker capable of vibrating in the same direction, which can fully utilize the back space of the diaphragm assembly, has good acoustic performance and sound effect, is not limited by the aspect ratio, and can better satisfy the needs of intelligent devices. The second object of the present invention is to provide a sound generating device with good acoustic performance and sound effect. To achieve the purpose, the invention adopts the following technical scheme: The invention discloses a back-to-back loudspeaker capable of vibrating in the same direction, which comprises two vibrating diaphragm assemblies, voice coils, two permanent magnets, two support assemblies, two magnetic poles of the two permanent magnets, two inner cavities of the two permanent magnets, and two sound outlet openings, wherein the two vibrating diaphragm assemblies are arranged at intervals along a first direction, the two vibrating diaphragm assemblies are provided with first mounting grooves extending along a second direction, the two vibrating diaphragm assemblies are provided with protruding parts protruding towards each other, the two support assemblies are connected to the vibrating diaphragm assemblies, the two support assemblies are respectively positioned at one side of the two vibrating diaphragm assemblies towards each other, each support assembly is provided with second mounting grooves corresponding to the first mounting grooves, the two voice coils penetrate through the second mounting grooves along the two sides of the first direction and are connected with the first mounting grooves in a sealing mode, the two permanent magnets are positioned at two sides of the voice coils along a third direction, the two magnetic poles of the permanent magnets are respectively connected with the two support assemblies along the first direction, the two magnetic poles of the two permanent magnets are reversely arranged, and the two magnetic poles of the two permanent magnets are respectively positioned between the two support assemblies along the first direction, and the two inner cavities of the two permanent magnets are formed between the two inner cavities along the second direction and the two inner cavities are perpendicular to the two inner cavities. In some embodiments, the voice coil comprises a plurality of layers of circuit boards, the number of layers of the circuit boards is even, each layer of circuit boards is provided with an annular flat cable, connection rows are arranged on the inner side and the outer side of the annular flat cable, the annular flat cables on two adjacent circuit boards are electrically connected through the connection rows, the connection row on the outer side of the annular flat cable on the uppermost layer is electrically connected with a wire, the connection rows on the inner side of two adjacent annular flat cables are electrically connected, and the connection row on the outer side of the annular flat cable on the lowest layer is electrically connected with the wire. In some embodiments, the bracket assembly includes a top plate provided with a fixing groove and a basin frame fixed in the fixing groove. In some specific embodiments, a positioning protrusion is disposed on one of the groove wall of the fixing groove and the outer peripheral wall of the top plate, and a positioning groove is disposed on the other of the groove wall of the fixing groove and the outer peripheral wall of the top plate, and the positioning protrusion can be fitted on the positioning groove. In some specific embodiments, the positioning protrusion and the pos