WO2020024523A1 - Dispositif de production de sons et terminal portatif - Google Patents

Dispositif de production de sons et terminal portatif Download PDF

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Publication number
WO2020024523A1
WO2020024523A1 PCT/CN2018/121126 CN2018121126W WO2020024523A1 WO 2020024523 A1 WO2020024523 A1 WO 2020024523A1 CN 2018121126 W CN2018121126 W CN 2018121126W WO 2020024523 A1 WO2020024523 A1 WO 2020024523A1
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WO
WIPO (PCT)
Prior art keywords
box body
sound
cavity
speaker unit
box
Prior art date
Application number
PCT/CN2018/121126
Other languages
English (en)
Chinese (zh)
Inventor
朱婷
马江羽
李军
张军
Original Assignee
歌尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2020024523A1 publication Critical patent/WO2020024523A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the invention relates to the technical field of electroacoustics, and in particular to a sound generating device and a portable terminal.
  • the existing sound generating device When the existing sound generating device is applied to a portable terminal such as a mobile phone, tablet, or notebook computer, in order to achieve stereo sound, it needs to be applied to an environment with an open back cavity, that is, the inner cavity of the portable terminal is used as the back cavity; then, because In the stereo mode, the speaker unit of the sound generating device will generate strong vibration, and part of the vibration energy will cause excessive vibration of the applied portable terminal, thereby reducing the user application experience.
  • the main purpose of the present invention is to provide a sound generating device, which aims to solve the technical problem that the existing sound generating device will cause excessive vibration of the standby portable terminal in the stereo mode.
  • the sound generating device provided by the present invention includes:
  • the speaker unit includes a housing, a vibration system and a magnetic circuit system housed in the housing;
  • a rear acoustic cavity is formed between the diaphragm of the vibration system and the magnetic yoke of the magnetic circuit system, and the speaker unit is provided with an internal leak hole communicating with the rear acoustic cavity;
  • the vibration reduction unit includes a box body and a sound absorbing material filled in the inner cavity of the box body;
  • the inner cavity of the box body is in butt communication with the inner leak hole, and the box body is provided with an external leak hole that connects the inner cavity of the box body and the outer side of the box body.
  • the box body is located at a lateral periphery of the speaker unit.
  • the box body is provided with two and is located on two opposite sides of the speaker unit, and the casing is provided with the inner leakage hole corresponding to the two box bodies, respectively.
  • the outer contour of the front view where the speaker unit and the box body are combined is rectangular.
  • the housing includes a front cover and a frame body, the front cover covers the frame body and surrounds the frame body to form a receiving cavity, and the vibration system and the magnetic circuit system are located in the receiving cavity.
  • the box body is integrally provided with the frame body.
  • the box body is in an elongated shape that is bent and extended, and is arranged along a circumferential direction of a side surface of the speaker unit.
  • a plurality of the box bodies are provided, and a plurality of the box bodies are connected end to end to surround the speaker unit, and the casing is provided with the inner leakage holes corresponding to the plurality of box bodies, respectively.
  • the side surface of the speaker unit includes two oppositely disposed first side surfaces and two oppositely disposed second side surfaces between the two first side surfaces;
  • a recessed portion is formed on a bottom surface of the speaker unit at a junction between the first side surface and the second side surface, and each of the recessed portions is provided with the internal leakage hole.
  • each box extends along the adjacent first and second sides.
  • each box body is provided with a partition corresponding to the recess, and the partition partitions the inner cavity of the box body into two independent channels;
  • the box body is respectively provided with the external leakage holes corresponding to the two channels, and each of the channels of the box body is correspondingly connected with one of the internal leakage holes.
  • the inner cavity of the box body is provided with a partition plate adjacent to the inner leakage hole, and the partition plate divides the inner cavity of the box body into a filling area and a non-filling area adjacent to the internal leakage hole;
  • the partition board is provided with a sound transmission hole
  • the vibration reduction unit further includes a sound transmission spacer installed at the sound transmission hole, and the sound absorbing material is filled in the filling area.
  • the external leakage hole is provided in the filling area, and in an extending direction of the box body itself, the external leakage hole is provided away from the internal leakage hole.
  • the external leakage hole is opened on a side of the box body remote from the speaker unit.
  • the present invention also provides a portable terminal including a housing, the housing has an accommodation cavity inside, the portable terminal further includes the sound emitting device, the sound emitting device includes a speaker unit and a vibration reduction unit; wherein the speaker unit It comprises a housing, a vibration system and a magnetic circuit system housed in the housing; a rear acoustic cavity is formed between the diaphragm of the vibration system and the magnetic yoke of the magnetic circuit system, and the speaker unit is provided with the rear An internal leakage hole communicating with an acoustic cavity; the vibration damping unit comprises a box body and a sound absorbing material filled in the internal cavity of the box body; the internal cavity of the box body is in communication with the internal leakage hole, and a communication chamber is provided on the box body The internal cavity of the box and an external leakage hole on the outside of the box body, the sound emitting device is installed in the accommodation cavity, and the housing is provided with an acoustic hole corresponding to the diaphragm of the vibration system, and the accommodation cavity
  • the sound emitting device of the present invention is provided in a butt connection with the internal leakage hole of the speaker housing through the box body, and is filled with sound absorbing material in the box body.
  • the external leakage hole provided in the box body is kept in communication with the open rear cavity; During vibration, the airflow generated by the vibration enters the open rear cavity through the internal leakage hole, the inner cavity of the box and the external leakage hole. Through the adsorption of the sound-absorbing material, the friction between the air and the gap in the adsorption material will cause the energy of the air to decay Therefore, after flowing out through the external leakage hole, its vibration energy has been reduced so as not to cause excessive vibration of the applied portable terminal.
  • FIG. 1 is a schematic structural diagram of a first embodiment of a sound generating device according to the present invention
  • FIG. 2 is a schematic structural diagram of a top cover of a vibration reduction unit of the sound generating device in FIG. 1;
  • FIG. 3 is a schematic plan view of a second embodiment of a sound generating device according to the present invention.
  • FIG. 4 is a schematic bottom view structure diagram of the sound generating device in FIG. 3;
  • FIG. 5 is a schematic sectional structural view of a front view of the sound generating device in FIG. 3;
  • FIG. 6 is a schematic cross-sectional structural view of a side of the sound generating device in FIG. 3; FIG.
  • FIG. 7 is a schematic diagram of an exploded structure of the sound generating device in FIG. 3;
  • FIG. 8 is a schematic cross-sectional structural view of a third embodiment of a sound generating device according to the present invention.
  • 100a, 100b, 100c sound generating device; 10a: speaker unit; 1a: housing; 11: front cover; 12: housing; 13a: internal leak hole; 13b: internal leak hole; 21a: diaphragm; 10b: speaker unit 1b: housing; 21b: diaphragm; 3: magnetic yoke; 4: rear acoustic cavity; 5: first side; 6: second side; 7: recess; 20a: vibration damping unit; 8a: box body; 81a : External leakage hole; 20b: vibration damping unit; 8b: box body; 81b: external leakage hole; 82: partition; 83a: channel; 83b: channel; 84: partition plate; 85a: filled area; 85b: filled area; 86a: non-filled area; 86b: non-filled area; 9a: sound-absorbing material; 9b: sound-absorbing material; 9c: sound-absorbing material; 10: sound-permeable spacer; 20: mesh; 20c: vibration damping unit
  • the directional indication is only used to explain in a specific posture (as shown in the drawings) (Shown) the relative positional relationship and movement of each component, etc., if the specific posture changes, the directional indication will change accordingly.
  • the invention provides a sound generating device.
  • the sound emitting device (100a, 100b, 100c) includes a speaker unit (10a, 10b) and a vibration reduction unit (20a, 20b, 20c). );among them,
  • the speaker unit (10a, 10b) includes a casing (1a, 1b), a vibration system and a magnetic circuit system housed in the casing (1a, 1b);
  • the rear acoustic cavity 4 is formed between the diaphragm (21a, 21b) of the vibration system and the magnetic yoke 3 of the magnetic circuit system.
  • the speaker unit (10a, 10b) is provided with an internal leakage hole (13a, 13b) that communicates with the rear acoustic cavity 4. ;
  • the vibration damping unit (20a, 20b, 20c) includes a box body (8a, 8b) and a sound absorbing material (9a, 9b, 9c) filled in the inner cavity of the box body (8a, 8b);
  • the inner cavity of the box body (8a, 8b) is in butt communication with the inner leakage hole (13a, 13b).
  • the box body (8a, 8b) is provided with a connection between the inner cavity of the box body (8a, 8b) and the box body (8a, 8b).
  • the shells (1a, 1b) are similar to the box bodies (8a, 8b), and both are used to provide accommodation and support.
  • the shells (1a, 1b) can be used to support the vibration system and the magnetic circuit system.
  • the housing (1a, 1b) and the box body (8a, 8b) may be provided integrally or separately.
  • the internal leakage holes (13a, 13b) can be directly opened on the casing (1a, 1b) or on the magnetic circuit system, such as the magnetic yoke 3; or the casing (1a, 1b) Cooperate with the yoke 3 to form internal leakage holes (13a, 13b).
  • Both the vibration system and the magnetic circuit system can refer to the existing form.
  • the voice coil of the vibration system is connected to the diaphragm (21a, 21b) of the vibration system.
  • the voice coil extends into the magnetic gap of the magnetic circuit system.
  • the electric current is vibrated by the ampere force of different magnitudes, and the voice coil vibration drives the diaphragm (21a, 21b) to vibrate.
  • the energy conversion method is electric energy-mechanical energy-acoustic energy.
  • the vibration system may further include a weight.
  • the magnetic circuit system may be a single magnetic circuit system, a dual magnetic circuit system, etc.
  • the magnetic gap of the magnetic circuit system is formed between the side magnetic circuit portion and the center magnetic circuit portion.
  • the side magnetic circuit portion and the center magnetic circuit portion At least one of them includes a permanent magnet.
  • the yoke 3 may be a simple flat plate shape or a pot shape with a side wall.
  • the sound absorbing materials (9a, 9b, 9c) can be materials such as loose porous fibers, foam particles, zeolite, activated carbon, etc. that can attenuate air vibration energy.
  • the mesh cloth 20 may be provided at the inner leak holes (13a, 13b) and the outer leak holes (81a, 81b).
  • the structural forms of the internal leakage holes (13a, 13b) and the external leakage holes they may be single through holes or multiple through holes.
  • the external leakage holes (81a, 81b) are Grid-like.
  • the sound emitting device (100a, 100b, 100c) of the present invention is provided in butt connection with the internal leakage holes (13a, 13b) of the speaker housing (1a, 1b) by providing the box bodies (8a, 8b), and is connected to the box bodies (8a, 8b).
  • external leakage holes (81a, 81b) provided on the box body (8a, 8b) are kept in communication with the open rear cavity; when the vibration system of the speaker unit (10a, 10b) During vibration, the airflow generated by vibration passes through the internal leakage holes (13a, 13b), the inner cavity of the box body (8a, 8b) and the external leakage holes into the open rear cavity, and is absorbed by the sound-absorbing material (9a, 9b, 9c).
  • the frictional effect of air and the gap in the adsorption material will cause the energy of the air to decay, so that after flowing out through the external leakage holes (81a, 81b), its vibration energy has been reduced so as not to cause the applied portable terminal to generate excessively large vibration.
  • the vibration direction of the vibration system is defined as the thickness direction
  • the box body (8 a, 8 b) is located at the lateral periphery of the speaker unit (10 a, 10 b).
  • the box body (8a, 8b) is provided with two and are respectively located on opposite sides of the speaker unit (10a, 10b), and the shell (1a, 1b) corresponds to the two box bodies (8a 8b) are provided with internal leakage holes (13a, 13b), respectively.
  • the outer shape of the sound generating device (100a, 100b, 100c) is formed into a long shape, which avoids occupying too much space in multiple dimensions.
  • FIG. 1, FIG. 3 and FIG. 8 again.
  • the front outline of the speaker unit (10a, 10b) and the box body (8a, 8b) is rectangular.
  • the casing (1a, 1b) in order to reduce the number of parts and improve production efficiency, includes a front cover 11 and a frame 12,
  • the cover 11 covers the frame body 12 and encloses the frame body 12 to form a receiving cavity.
  • the vibration system and the magnetic circuit system are located in the receiving cavity.
  • the box body (8a, 8b) is integrally provided with the frame body 12.
  • the box body (8a, 8b) in order to extend the sound propagation path as much as possible and reduce the space occupation, has a long strip shape bent and extended. And arranged along the circumferential direction of the side of the speaker unit (10a, 10b).
  • the box body (8a, 8b) is provided with a plurality of box bodies (8a, 8b) head and tail. Then, the speaker unit (10a, 10b) is surrounded, and the casing (1a, 1b) is respectively provided with internal leakage holes (13a, 13b) corresponding to the plurality of boxes (8a, 8b).
  • the side surfaces of the speaker unit (10 a, 10 b) include two oppositely disposed first side surfaces 5 and two oppositely disposed second side surfaces 6;
  • the bottom surface of the speaker unit (10a, 10b) forms a recessed portion 7 at the junction of the first side surface 5 and the second side surface 6, and each recessed portion 7 is provided with an internal leak hole (13a, 13b).
  • the side magnetic circuit part of the magnetic circuit system such as the side magnetic steel or the yoke 3 side wall is usually along The corresponding first side surface 5 or the second side surface 6 is provided. Therefore, it is more convenient to provide an internal leakage hole (13a, 13b) at the recess 7 to communicate with the back cavity.
  • each box body (8a, 8b) is provided, and each box body (8a, 8b) extends along adjacent first side surfaces 5 and second side surfaces 6.
  • each box body (8a, 8b) is L-shaped. In this way, after installation, the first side 5 and the second side 6 can also be used to limit the position.
  • the number of the boxes (8a, 8b) is relatively small, which is easy to assemble.
  • each box body (8a, 8b) is provided with a partition plate 82 corresponding to the concave portion 7, and the partition plate 82 divides the inner cavity of the box body (8a, 8b) into two independent channels (83a, 83b).
  • the box body (8a, 8b) corresponding to the two channels (83a, 83b) are provided with external leakage holes (81a, 81b), each channel (83a, 83b) of the box body (8a, 8b) corresponds to an internal leakage hole (13a, 13b).
  • each channel (83a, 83b) is provided with external leakage holes (81a, 81b) so that when communicating with the open rear cavity, the diffusion of the airflow is more uniform, so that the sound quality effect that can be achieved is better .
  • the box body (8a, 8b) is provided with two, a total of 8 external leakage holes (81a, 81b) can be formed, and the external leakage holes (81a, 81b) are along the speaker unit (10a, 10b). ).
  • the inner cavity of the box body (8a, 8b) is provided with a partition plate 84 adjacent to the inner leakage hole (13a, 13b).
  • the inner cavity of the body (8a, 8b) is divided into a filling area (85a, 85b) and a non-filling area (86a, 86b) adjacent to the internal leakage hole (13a, 13b); a sound transmitting hole is provided on the partition plate 84 to reduce vibration
  • the unit (20a, 20b, 20c) further includes a sound-transmitting isolator 10 installed at the sound-transmitting hole, and a sound-absorbing material (9a, 9b, 9c) is filled in the filling area (85a, 85b).
  • the rear acoustic cavity 4 can be expanded first to achieve a better buffer effect, that is, in the There is a transitional transmission before the air enters the gap of the sound-absorbing material (9a, 9b, 9c).
  • the sound-transmitting isolator 10 plays a role of isolation while maintaining ventilation.
  • the sound-transmitting isolator 10 may be a flexible and breathable cloth, and may be a mesh cloth.
  • the vibration reduction unit (20a, 20b, 20c) further includes a mesh cloth 20 installed at the external leakage hole (81a, 81b).
  • the external leakage holes (81a, 81b) are provided in the filling areas (85a, 85b), and in the extending direction of the box body (8a, 8b) itself, the external leakage holes (81a, 81b) are far away from the internal leakage hole (13a) , 13b) settings. In this way, the action time of the air-absorbing material (9a, 9b, 9c) can be extended as much as possible to ensure that the vibration energy of the air is effectively attenuated.
  • external leakage holes (81a, 81b) are opened on the side of the box body (8a, 8b) away from the speaker unit (10a, 10b). In this way, it is beneficial to use the rear cavity space located on the lateral periphery to open, and at the same time extend the air propagation path in the box body (8a, 8b).
  • the present invention also provides a portable terminal (not shown), which includes a housing, and the housing has an accommodation cavity therein.
  • the portable terminal further includes a sound generating device (100a, 100b, 100c).
  • the specific details of the sound generating device (100a, 100b, 100c) For the structure, referring to the foregoing embodiments, since the portable terminal adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail here.
  • the sound generating device (100a, 100b, 100c) is installed in the containing cavity, and the housing is provided with a sound hole corresponding to the diaphragm (21a, 21b) of the vibration system, and the containing cavity has a communication with the external leakage holes (81a, 81b). Expansion cavity.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

La présente invention concerne un dispositif de production de sons et un terminal portatif. L'appareil de production de sons comprend : une unité à haut-parleur et une unité d'amortissement de vibrations, l'unité à haut-parleur comprenant un boîtier, ainsi qu'un système de vibration et un système de circuit magnétique logés dans le boîtier. Une cavité sonore arrière est formée entre un diaphragme vibrant du système de vibration et une culasse magnétique du système de circuit magnétique. L'unité à haut-parleur est pourvue de trous de fuite internes, qui sont en communication avec la cavité sonore arrière. L'unité d'amortissement de vibrations comprend une boîte et un matériau d'insonorisation, remplissant une cavité interne de la boîte. La cavité interne de la boîte vient en butée contre les trous de fuite internes et est en communication avec ces derniers, et la boîte est pourvue de trous de fuite externes, qui sont en communication avec la cavité interne de la boîte et avec l'extérieur de la boîte. Avant qu'un flux d'air, généré par l'unité à haut-parleur de l'appareil de production de sons de la présente invention, ne pénètre dans la cavité arrière ouverte, le frottement entre l'air et les vides dans un matériau absorbant atténue l'énergie de l'air et par conséquent, son énergie de vibration est réduite à un niveau si bas que le terminal portatif, auquel est appliqué l'appareil de production de sons, ne générera pas de vibration excessive.
PCT/CN2018/121126 2018-08-01 2018-12-14 Dispositif de production de sons et terminal portatif WO2020024523A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810867272.XA CN108650603A (zh) 2018-08-01 2018-08-01 发声器件及便携终端
CN201810867272.X 2018-08-01

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WO2020024523A1 true WO2020024523A1 (fr) 2020-02-06

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WO (1) WO2020024523A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108650603A (zh) * 2018-08-01 2018-10-12 歌尔股份有限公司 发声器件及便携终端
CN111510830A (zh) * 2020-04-16 2020-08-07 歌尔股份有限公司 发声装置
CN218734927U (zh) * 2022-08-05 2023-03-24 华为技术有限公司 一种扬声器及电子设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205283805U (zh) * 2015-12-31 2016-06-01 歌尔声学股份有限公司 扬声器模组
CN106973348A (zh) * 2017-04-24 2017-07-21 歌尔股份有限公司 扬声器模组及电子设备
CN207184807U (zh) * 2017-09-19 2018-04-03 歌尔科技有限公司 一种微型扬声器
CN108650603A (zh) * 2018-08-01 2018-10-12 歌尔股份有限公司 发声器件及便携终端

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205283805U (zh) * 2015-12-31 2016-06-01 歌尔声学股份有限公司 扬声器模组
CN106973348A (zh) * 2017-04-24 2017-07-21 歌尔股份有限公司 扬声器模组及电子设备
CN207184807U (zh) * 2017-09-19 2018-04-03 歌尔科技有限公司 一种微型扬声器
CN108650603A (zh) * 2018-08-01 2018-10-12 歌尔股份有限公司 发声器件及便携终端

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