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CN-116033323-B - Speaker module and electronic equipment

CN116033323BCN 116033323 BCN116033323 BCN 116033323BCN-116033323-B

Abstract

The application discloses a loudspeaker module and electronic equipment. The loudspeaker module comprises a shell, a loudspeaker monomer and an adjusting module, wherein an accommodating cavity is formed in the shell, the loudspeaker monomer is arranged in the accommodating cavity and is configured to convert an electric signal into a sound signal, the adjusting module is connected with the loudspeaker monomer and is arranged in the accommodating cavity, a rear sound cavity adjusting module is formed between the adjusting module and the loudspeaker monomer and is configured to adjust the size of the rear sound cavity according to the frequency characteristic of the sound signal under the condition of electrifying, the effect of the adjustable rear sound cavity is realized, and the acoustic expressive force of the loudspeaker module on the sound signals with different frequencies is improved.

Inventors

  • ZHUANG YIJIE

Assignees

  • 歌尔股份有限公司

Dates

Publication Date
20260508
Application Date
20221227

Claims (13)

  1. 1. A speaker module, comprising: a housing having a receiving cavity therein; A speaker unit disposed in the accommodation chamber and configured to be capable of converting an electrical signal into a sound signal; The adjusting module is arranged in the accommodating cavity and comprises a groove-shaped support, a movable assembly and a driving piece, the groove-shaped support is fixed on the inner wall of the shell, the opening side of the groove-shaped support faces the loudspeaker unit, and the movable assembly is movably arranged in the groove-shaped support, so that a rear sound cavity is formed between the movable assembly and the loudspeaker unit; The driving piece is fixed in the groove-shaped bracket and is positioned at one side of the movable component, which is far away from the loudspeaker monomer, and the driving piece is electrically connected with the loudspeaker monomer and is configured to drive the movable component to move along the inner side wall of the groove-shaped bracket towards a direction close to or far away from the loudspeaker monomer according to the frequency characteristic of the sound signal under the condition of electrifying so as to adjust the volume of the rear sound cavity; the movable component comprises a baffle plate, a pressing sheet, a spring and a ball; The baffle plate is uniformly distributed with containing grooves in a radial shape, and the pressing sheets are arranged on one side of the baffle plate, which is provided with the containing grooves, so that the springs are limited in the containing grooves; the ball is correspondingly abutted between the spring and the inner side wall of the groove-shaped bracket.
  2. 2. A loudspeaker module according to claim 1, wherein the driving member is a telescopic electromagnet having a telescopic shaft which is retractable in a direction towards the loudspeaker unit when the telescopic electromagnet is energised, the moveable assembly being secured to the telescopic shaft.
  3. 3. A loudspeaker module according to claim 1, wherein the driver has a maximum stroke and a minimum stroke; With the driver at the maximum stroke, the movable assembly is positioned proximate to the speaker unit such that the rear acoustic chamber has a minimum volume; with the driver at the minimum stroke, the movable assembly is located away from the speaker unit, such that the rear acoustic chamber has a maximum volume.
  4. 4. A loudspeaker module according to claim 3, wherein the driver is capable of driving the moveable assembly to a set position with respect to the maximum stroke or the minimum stroke, with the driver between the maximum stroke and the minimum stroke, such that the rear acoustic chamber has a set volume.
  5. 5. A loudspeaker module according to claim 1, wherein the diaphragm is fixed to the driving member, and the driving member is capable of driving the diaphragm to move in a direction approaching or separating from the loudspeaker unit, so as to adjust the volume of the rear acoustic chamber.
  6. 6. A loudspeaker module according to claim 5, wherein, The number of the containing grooves is matched with that of the springs, At least two springs are arranged in the accommodating grooves in a one-to-one correspondence manner.
  7. 7. A loudspeaker module according to claim 6, wherein the number of balls matches the number of springs; the balls roll along the inner side walls of the groove-shaped support under the condition that the movable assembly moves towards or away from the loudspeaker unit.
  8. 8. The speaker module as claimed in claim 7, wherein a sliding groove is provided on an inner side wall of the groove-shaped bracket, the number of the sliding groove is matched with the number of the balls, and the balls roll along the sliding groove when the movable assembly moves in a direction approaching or separating from the speaker unit.
  9. 9. The loudspeaker module of claim 6, wherein the movable assembly further comprises a sealant layer, the partition plate is further provided with a containing groove surrounding the periphery of the containing groove, the pressing sheet and the sealant layer are respectively matched with the containing groove in shape, and the sealant layer is used for bonding the pressing sheet on the partition plate.
  10. 10. The loudspeaker module of claim 6, wherein the movable assembly further comprises a sealing ring, the sealing ring is sleeved on the outer periphery of the partition plate, and the sealing ring is made of polytetrafluoroethylene material; and the partition board is also provided with air holes between any two containing grooves, and the air holes can balance the air pressure at two sides of the movable assembly.
  11. 11. The speaker module of claim 10, wherein the movable assembly further comprises a waterproof and breathable membrane disposed at the vent.
  12. 12. A loudspeaker module according to claim 1, wherein the groove-shaped holder is fixed to the inner wall of the housing by a sealant to seal the rear acoustic chamber.
  13. 13. An electronic device comprising a speaker module according to any one of claims 1-12.

Description

Speaker module and electronic equipment Technical Field The application relates to the technical field of sound production devices, in particular to a loudspeaker module and electronic equipment. Background Along with the development of technology, most electronic devices are equipped with speaker modules to satisfy the sound-producing function of the electronic devices, and the acoustic effect of the speaker modules has a great influence on the immersion feeling of the electronic devices. In the prior art, a speaker module typically has a front sound cavity and a rear sound cavity, and the volume size of the rear sound cavity has a large influence on the acoustic performance of the speaker module. The volume of a rear sound cavity of a loudspeaker module on the market at present is fixed, the sound effect cannot be adapted to music with different frequencies, the acoustic effect is poor, particularly, the rear sound cavity is limited by the fixed volume of the rear sound cavity when the rear sound cavity is used for game video and audio of some VR or AR equipment, the change of bass and the shocking effect cannot meet the playing requirements of different styles, and even if the rear sound cavity is corrected through software calibration, the sound effect cannot be sufficiently enriched and fine acoustic performance. Disclosure of Invention An object of the present application is to provide a new technical solution for a speaker module and an electronic device. According to a first aspect of the present application, there is provided a speaker module comprising: a housing having a receiving cavity therein; A speaker unit disposed in the accommodation chamber and configured to be capable of converting an electrical signal into a sound signal; the adjusting module is electrically connected with the loudspeaker unit and is arranged in the accommodating cavity, and a rear sound cavity is formed between the adjusting module and the loudspeaker unit; the adjusting module is configured to be able to adjust the volume size of the rear acoustic cavity according to the frequency characteristic of the acoustic signal when energized. Optionally, the adjusting module comprises a groove-shaped bracket, a movable component and a driving piece; the groove-shaped bracket is fixed on the inner wall of the shell, and the opening side of the groove-shaped bracket faces the loudspeaker unit; the driving piece is fixed in the groove-shaped bracket and is positioned at one side of the movable component, which is far away from the loudspeaker monomer; The driving piece is electrically connected with the loudspeaker unit, and the driving piece is configured to drive the movable piece to move along the inner side wall of the groove-shaped bracket towards a direction close to or far away from the loudspeaker unit so as to adjust the volume of the rear sound cavity. Optionally, the driving piece is flexible electro-magnet, flexible electro-magnet has the telescopic shaft under the condition that flexible electro-magnet was circular telegram, the telescopic shaft can be followed towards the free direction of speaker is flexible, movable assembly is fixed in on the telescopic shaft. Optionally, the driving member has a maximum stroke and a minimum stroke; With the driver at the maximum stroke, the movable assembly is positioned proximate to the speaker unit such that the rear acoustic chamber has a minimum volume; with the driver at the minimum stroke, the movable assembly is located away from the speaker unit, such that the rear acoustic chamber has a maximum volume. Optionally, in a case that the driving member is between the maximum stroke and the minimum stroke, the driving member can drive the movable assembly to move to a set position with the maximum stroke or the minimum stroke as a stroke reference, so that the rear acoustic cavity has a set volume. Optionally, the movable assembly includes a partition, where the partition is fixed on the driving member, and the driving member can drive the partition to move in a direction close to or far away from the speaker unit, so as to adjust the volume of the rear acoustic cavity. Optionally, the movable assembly further comprises a pressing sheet and a spring, and the partition plate is provided with a containing groove; The springs are provided with at least two containing grooves, the number of the containing grooves is matched with that of the springs, and the containing grooves are uniformly distributed on the partition plate in a radial manner; at least two springs are arranged in the accommodating grooves in a one-to-one correspondence mode, and the pressing sheets are arranged on one side, provided with the accommodating grooves, of the partition plate and limit the springs in the accommodating grooves. Optionally, the movable assembly further comprises balls, the number of the balls is matched with that of the springs, and the balls are in one-to-one abutting connection between