WO2014190556A1 - 低音扬声器及其后声腔形成方法 - Google Patents

低音扬声器及其后声腔形成方法 Download PDF

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Publication number
WO2014190556A1
WO2014190556A1 PCT/CN2013/076600 CN2013076600W WO2014190556A1 WO 2014190556 A1 WO2014190556 A1 WO 2014190556A1 CN 2013076600 W CN2013076600 W CN 2013076600W WO 2014190556 A1 WO2014190556 A1 WO 2014190556A1
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WO
WIPO (PCT)
Prior art keywords
woofer
outer casing
unit
mounting plane
diaphragm
Prior art date
Application number
PCT/CN2013/076600
Other languages
English (en)
French (fr)
Inventor
姜滨
江超
杨健斌
Original Assignee
歌尔声学股份有限公司
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 歌尔声学股份有限公司 filed Critical 歌尔声学股份有限公司
Priority to US14/894,308 priority Critical patent/US9866935B2/en
Priority to KR1020157036914A priority patent/KR101726830B1/ko
Publication of WO2014190556A1 publication Critical patent/WO2014190556A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/021—Transducers or their casings adapted for mounting in or to a wall or ceiling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/029—Manufacturing aspects of enclosures transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops

Definitions

  • This invention relates to the field of acoustic power technology and, more particularly, to a method of forming a woofer and its rear cavity. Background technique
  • the woofer is an important electronic component widely used in the above electronic products.
  • thin electronic devices such as LCD TVs and notebook computers, it is required to minimize the thickness of the speaker to ensure the performance of the thin electronic device. .
  • the ultra-thin woofer works under high power conditions, and the pressure inside the cavity is very large. Because the back cover is a large-area flat plate, it is easy to vibrate, and the external sound is radiated, and its phase is opposite to that of the speaker, which leads to The overall speaker system performance is degraded.
  • the present invention provides a woofer comprising a woofer unit, a first gasket, a second gasket and a casing, wherein
  • the first gasket is sealingly coupled to the outer edge of the outer casing
  • the woofer unit is fixedly packaged in the outer casing by the first gasket, and the second gasket is disposed between the speaker unit and the outer casing;
  • a sound hole is formed on the outer casing corresponding to the position of the fixed woofer, the shape and size of the sound hole Corresponds to the shape and size of the woofer;
  • the terminal mounting plane that is fixedly mounted with the woofer is the rear cover of the woofer, and the terminal mounting plane forms the rear cavity of the woofer with the housing through the first gasket.
  • outer casing and the terminal mounting plane are fixedly connected by screws or support members.
  • the support members are disposed on both sides of the sound hole on the outer casing.
  • the supporting member includes two flat plates which are parallel to each other and a short plate which is fixedly connected between the two flat plates, and the lengths of the two flat plates are not equal.
  • a triangular prism structure is formed between the two short plates and one of the two flat plates.
  • a mesh cover is provided on the sound hole of the outer casing.
  • the woofer unit comprises a diaphragm, at least two mutually independent drive units, a mounting plane and an annular side wall disposed around the mounting plane;
  • the diaphragm includes a top portion of the ball at a central position and a folding portion at an edge position, and the driving unit includes a voice coil unit and a magnetic circuit unit corresponding to the voice coil unit; the voice coil unit is attached to the top of the ball of the diaphragm;
  • a mounting hole for accommodating the fixed magnetic circuit unit and an sounding hole penetrating the mounting plane are disposed on the mounting plane, and an upper side surface of the annular side wall is fixedly connected with the folding portion of the diaphragm;
  • the number and position of the mounting holes correspond to the number and position of the voice coil unit attached to the top of the ball of the diaphragm.
  • the woofer unit comprises a diaphragm and four or six mutually independent drive units;
  • the diaphragm includes a top portion of the ball at a central position and a folded portion at an edge position;
  • the drive unit includes a voice coil unit and a magnetic circuit unit corresponding to the voice coil unit; four voice coil units are respectively coupled to the four corners of the dome of the diaphragm.
  • the invention provides a method for forming a rear acoustic cavity of a woofer, comprising:
  • a sound hole is formed in the outer casing corresponding to the position of the fixed speaker unit, and the shape of the sound hole And the size corresponds to the shape and size of the woofer.
  • outer casing and the terminal mounting plane are fixedly connected by screws or support members.
  • the supporting member includes two flat plates which are parallel to each other and a short plate which is fixedly connected between the two flat plates, and the lengths of the two flat plates are not equal.
  • the terminal installation plane is a wall surface, a desktop or a flat panel television.
  • the woofer of the present invention and the method for forming the rear acoustic cavity thereof the terminal mounting plane is a part of the woofer cavity, the terminal mounting plane and the outer casing form a woofer rear sound chamber, and the woofer is used separately as the back cover phase.
  • the woofer can increase the strength and avoid the problem of back cover vibration and external radiation; it can also save the back cover part of the woofer cavity and reduce the cost.
  • FIG. 1 is a cross-sectional view of a woofer according to an embodiment of the present invention
  • FIG. 2 is a schematic view showing a mounting structure of a woofer application terminal according to another embodiment of the present invention
  • FIG. 3 is a plan view showing a woofer application terminal mounting according to another embodiment of the present invention
  • FIG. 4 is a woofer according to another embodiment of the present invention.
  • FIG. 5 is a side view showing the installation of a woofer application terminal according to another embodiment of the present invention
  • FIG. 6 is a flow chart showing a method of forming a rear acoustic cavity of a woofer according to another embodiment of the present invention.
  • the reference numerals therein include: terminal mounting plane 1, screw 2, second gasket 3, first dense Gland 3', outer casing 4, net cover 5, woofer unit 6, rear sound chamber 7, support member 8, acoustic chamber 9 of woofer, flat plate A, flat plate B, flat plate C, flat plate D, diaphragm 10, drive unit 11.
  • FIG. 1 is a cross-sectional view of a woofer according to an embodiment of the present invention.
  • the woofer provided by the present invention includes a woofer unit 6, a casing 4 for fixing a woofer unit, a woofer of a woofer unit 6 and a woofer formed by the casing 4 (not shown in FIG. 1).
  • the terminal mounting plane fixedly mounted with the woofer is the back cover of the 1 woofer
  • the terminal mounting plane 1 forms the rear acoustic cavity of the woofer together with the outer casing 4 through the first gasket 3'. That is: the sound chamber of the woofer and the terminal mounting plane 1 form a rear sound chamber 7, and the terminal mounting plane 1 serves as the back cover of the woofer.
  • the woofer works under high power conditions, the pressure inside the sound chamber is very large, and the terminal mounting plane 1 is used as the back cover of the woofer. It is not easy to vibrate and radiate external sound, thus ensuring that the performance of the entire speaker system does not occur due to high-power vibration. Variety.
  • the second gasket 3 is disposed between the speaker unit 6 and the outer casing 4.
  • Gp The woofer unit 6 is sealed and closed with the outer casing 4 through the second sealing pad 3 to prevent sound from radiating outside the woofer through the gap between the outer casing 4 and the woofer unit 6.
  • the first gasket 3' is hermetically sealed to the outer edge of the outer casing 4, and the woofer unit 6 is fixedly enclosed in the outer casing 4 by the first sealing pad 3'.
  • Gp The woofer unit 6 is sealed and closed with the terminal mounting plane 1 through the first gasket 3', and the purpose of the second gasket 3' is to completely close the gap between the woofer unit 6 and the terminal mounting plane 1 to prevent sound. External radiation.
  • a mesh cover 5 is disposed above the sound hole of the outer casing, and the mesh cover 5 is used for dustproofing to prevent dust from entering the inside of the low-range speaker unit 6, and the woofer unit 6 can be protected.
  • a sound hole is formed in the outer casing 4 corresponding to the position of the fixed woofer, and the shape and size of the sound hole are large Small corresponds to the shape and size of the woofer.
  • the woofer unit 6 is fixedly coupled to the outer casing 4, and the outer casing 4 is fixedly connected to the terminal mounting plane 1 of the woofer; preferably, the outer casing 4 and the terminal mounting plane 1 of the woofer are fixedly connected by screws 2 or supporting members. .
  • the subwoofer's mounting terminals include wall, desktop and flat-panel TVs.
  • the wall and the table top are hard planes.
  • the terminal mounting plane 1 is a wall surface or a hard plane.
  • the woofer unit includes a diaphragm and at least two mutually independent drive units.
  • the woofer unit 6 includes a diaphragm 10 and six mutually independent drive units 11.
  • the diaphragm 10 includes a ball top at a center position and a loop portion at an edge position.
  • the drive unit 11 includes a voice coil unit and a magnetic circuit unit corresponding to the voice coil unit. The voice coil unit is attached to the top of the ball of the diaphragm 10.
  • the woofer unit includes a diaphragm and four or six independent drive units; the drive unit includes a voice coil unit and a magnetic circuit unit corresponding to the voice coil unit; if the woofer includes four drive units, The voice coil units of the four drive units are respectively disposed at the four corners of the top of the diaphragm of the diaphragm; if the woofer includes six drive units, the voice coil unit of the drive unit can be evenly placed on the top of the diaphragm of the diaphragm The peripheral position can also be placed on the top of the ball in a discrete and irregular arrangement to avoid resonance and uniform driving force.
  • the woofer unit 6 further includes a mounting plane and an annular side wall disposed around the mounting plane.
  • the mounting plane is provided with a mounting hole for receiving the fixed magnetic circuit unit and an sound hole penetrating the mounting plane, and the upper side of the annular side wall It is fixedly connected to the folding portion of the diaphragm; wherein the number and position of the mounting holes correspond to the number and position of the voice coils attached to the top of the ball of the diaphragm.
  • the voice coil unit is electrically connected to an external circuit through the FPCB connector 12, that is, the FPCB connector 12 is used to electrically connect the internal circuit and the external circuit of the woofer. Since the intermediate portion of the FPCB connector 12 is coupled to the side of the diaphragm 10 on which the voice coil is disposed, in the speaker product, the intermediate portion of the FPCB connector 12 is located on the side of the mounting plane adjacent to the diaphragm 10, and the FPCB connector Both ends of the 12 extend from the sound hole to a side of the mounting plane away from the diaphragm 10.
  • a plurality of independent drive units can make the driving force uniform and generate a larger driving force, and can be applied to a more powerful electronic device or to a screw fixing to a wall and a desktop.
  • the woofer unit of the general application includes four or six drive units.
  • the mounting terminal of the woofer includes a wall surface, a table top, and a back plane of the flat panel television.
  • the above-mentioned mounting terminal is a wall surface or a hard plane, and the terminal described below is a flat panel television.
  • FIG. 3, FIG. 4 and FIG. 5 are respectively a schematic view showing a mounting structure of a woofer application terminal, a mounting top view, a cross-sectional view and a mounting side view according to another embodiment of the present invention.
  • the woofer provided by the present invention comprises a woofer unit 6, a net cover 5, a woofer unit 6 and a sound chamber 9 formed by the outer casing, and a second seal.
  • the pad 3 and the first gasket 3' and the support member 8 connected to the flat panel television.
  • the support member 8 connected to the flat-panel TV shown in FIG. 2 is composed of two mutually parallel flat plates A and B and a short plate C and a short flat plate D which are fixedly connected between the two flat plates A and B,
  • the length of the flat plate A is larger than the length of the flat plate B, and the flat plate B, the flat plate C and the flat plate D are connected to form a triangular prism. Since the triangular shape has stability, the triangular prism structure connection is relatively stable.
  • the flat plate B of the support member 8 is connected to the outer casing 4, and the flat plate A of the support member 8 is connected to the flat panel television.
  • the woofer 6 is mounted with two support members 8, which are disposed on both sides of the sound hole on the outer casing 4, gp: two support members 8 are disposed on both sides of the acoustic cavity 9 of the woofer, and The two support members 8 are connected to the flat panel television such that the acoustic chamber 9 of the woofer and the flat panel form a rear sound chamber, and the gP: flat panel television forms the rear acoustic chamber of the woofer with the outer casing through the first gasket.
  • the flat-panel TV is used as the back cover of the woofer, which increases the strength of the back cover and does not cause vibration of the back cover. Even if the woofer is operated under high power conditions, the flat panel TV is used as the back cover of the woofer, and vibration and sound are not easily radiated to the outside, thus ensuring that the performance of the entire speaker system does not change due to high-power vibration.
  • the flat-panel TV is used as the back cover of the woofer, and the back cover portion of the woofer 6's sound chamber can be saved, thereby reducing the cost.
  • the woofer unit 6 is sealed and sealed with the outer casing 4 and the flat panel TV through the second gasket 3 and the first gasket 3', respectively, to prevent sound from radiating outside the woofer 6 through the gap between the outer casing 4 and the woofer 6;
  • the purpose of the gasket 3' is to completely close the gap between the woofer and the flat panel TV to prevent external sound radiation.
  • the woofer unit 6 and the outer casing 4 form an acoustic cavity 9 of the woofer.
  • a sound absorbing material or a gas absorbing material may be disposed in the acoustic cavity to be limited. Try to improve the low-frequency sound of the speaker in the space range; at the same time, the sound chamber 9 of the woofer and the TV form a rear sound cavity; the combination of the two methods can be better. The performance of the entire speaker system is guaranteed and there is no problem with the vibration of the back cover.
  • the mesh cover 5 is disposed above the sound hole of the outer casing to protect and protect the woofer unit 6 .
  • the woofer unit 6 includes six mutually independent drive units, which can increase the sensitivity of the speaker, balance the diaphragm of the woofer, and drive the force. Uniform, producing a greater driving force, can be applied to a TV with a higher power, and can also make the structure of the woofer lighter and thinner.
  • FIG. 6 is a flowchart of a method for forming a rear acoustic cavity of a woofer according to an embodiment of the present invention. The specific process is as follows:
  • a sound hole is formed in the housing at a position corresponding to the fixed speaker unit, and the shape and size of the sound hole correspond to the shape and size of the woofer.
  • the outer casing and the terminal mounting plane are fixedly connected by screws or support members, and the terminal mounting plane is a wall surface, a desktop or a flat panel television.
  • the terminal installation plane is a flat-panel television
  • the outer casing and the flat-panel television are connected by a support member
  • the support member includes two flat plates parallel to each other and a short plate fixedly connected between the two flat plates, and two flat plates
  • the lengths are not equal, and a triangular prism structure is formed between the two short plates and one of the two flat plates; because the triangle has stability, the triangular prism structure is relatively stable.
  • a mesh cover is arranged on the sound hole of the outer casing, the net cover is used for dustproof, and the woofer unit is normally operated.
  • the woofer and the method for forming the rear acoustic cavity provided by the present invention the terminal mounting plane as a part of the woofer cavity, and the cavity of the woofer together form a rear sound cavity, thereby being separate from the woofer Compared with the back cover, it can increase the strength, avoid the problem of the vibration of the back cover and the external radiated sound, so as to ensure that the system performance of the whole woofer is not deteriorated.
  • the terminal is also used as a part of the woofer cavity to save the bass.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本发明提供一种低音扬声器，包括低音扬声器单体、第一密封垫、第二密封垫和外壳，第一密封垫与所述外壳的外边缘密闭结合；低音扬声器单体被第一密封垫固定封装在外壳中，第二密封垫设置在低音扬声器单体和外壳之间；在外壳上对应于固定低音扬声器的位置开设有声孔，声孔的形状和大小与低音扬声器的形状和大小相对应；与低音扬声器固定安装的终端安装平面为低音扬声器的后盖，终端安装平面通过第一密封垫与外壳一起形成低音扬声器的后声腔。本发明提供的低音扬声器的腔体及应用该低音扬声器的安装终端，解决超薄低音扬声器后盖振动问题。

Description

低音扬声器及其后声腔形成方法
技术领域
本发明涉及声电技术领域， 更为具体地， 涉及一种低音扬声器及其后声 腔形成的方法。 背景技术
随着社会的进步和技术的发展， 近年来， 电视机等电子产品日趋薄型化， 人们对这些电子产品的性能要求也越来越高， 从而也要求与之配套的电子零 件的厚度也在减小、 性能和一致性不断提高。
低音扬声器是广泛应用于上述电子产品的一种重要电子零件， 在如液晶 电视、 笔记本电脑等薄型电子装置中， 要求在保障扬声器性能的基础上尽量 减小其厚度， 以适应薄型电子装置的需要。
超薄低音扬声器工作在大功率条件下， 腔内的压力很大， 因为后盖是一 块大面积的平板， 所以很容易发生振动， 并且对外辐射声音， 其位相与扬声 器是相反的， 从而会导致整个扬声器系统性能变差。
基于以上因素， 需要对传统扬声器安装方式跟安装终端进行改进。 发明内容
鉴于上述问题， 本发明的目的是提供一种低音扬声器及其后声腔形成的 方法， 以解决超薄低音扬声器后盖振动问题。 本发明提供一种低音扬声器， 包括低音扬声器单体、 第一密封垫、 第二 密封垫和外壳， 其中，
第一密封垫与外壳的外边缘密闭结合；
低音扬声器单体被第一密封垫固定封装在外壳中， 第二密封垫设置在扬 声器单体和外壳之间；
在外壳上对应于固定低音扬声器的位置开设有声孔， 声孔的形状和大小 与低音扬声器的形状和大小相对应；
与低音扬声器固定安装的终端安装平面为低音扬声器的后盖， 终端安装 平面通过第一密封垫与外壳一起形成低音扬声器的后声腔。
此外， 优选的方案是， 外壳与终端安装平面通过螺丝或者支撑部件固定 连接。
此外， 优选的方案是， 支撑部件设置在外壳上声孔的两侧。
此外， 优选的方案是， 支撑部件包括相互平行的两个平板以及固定连接 两个平板之间的短板， 并且， 两个平板的长度不相等。
此外， 优选的方案是， 两个短板与两个平板中的其中一个较短的平板之 间形成三棱柱结构。
此外， 优选的方案是， 在外壳的声孔上设置有网罩。
此外， 优选的方案是， 低音扬声器单体包括振膜、 至少两个相互独立的 驱动单元、 安装平面和设置在安装平面周围的环形侧壁；
振膜包括位于中心位置的球顶部和位于边缘位置的折环部， 驱动单元包 括音圈单元和与音圈单元相对应的磁路单元； 音圈单元贴合固定在振膜的球 顶部；
在安装平面上设置有用于收容固定磁路单元的安装孔以及贯通安装平面 的出声孔， 环形侧壁的上侧面与振膜的折环部固定连接； 其中，
安装孔的数量和位置与贴合在振膜的球顶部的音圈单元的数量和位置相 对应。
此外， 优选的方案是， 低音扬声器单体包括振膜和四个或者六个相互独 立的驱动单元；
振膜包括位于中心位置的球顶部和位于边缘位置的折环部；
驱动单元包括音圈单元和与音圈单元相对应的磁路单元； 在振膜的球顶 部的四个角部分别结合有四个音圈单元。
本发明提供一种低音扬声器的后声腔形成方法， 包括：
通过密封垫将扬声器单体固定在外壳中；
将外壳与终端安装平面固定， 终端安装平面作为低音扬声器的后盖， 与 外壳一起形成低音扬声器的后声腔； 其中，
在外壳上对应于固定扬声器单体的位置开设有声孔， 并且， 声孔的形状 和大小与低音扬声器的形状和大小相对应。
此外， 优选的方案是， 外壳与终端安装平面通过螺丝或者支撑部件固定 连接。
此外， 优选的方案是， 支撑部件包括相互平行的两个平板以及固定连接 两个平板之间的短板， 并且， 两个平板的长度不相等。
此外， 优选的方案是， 终端安装平面为墙面、 桌面或者平板电视。
此外， 优选的方案是， 在外壳的声孔上设置有网罩。 从上面的技术方案可知， 本发明的低音扬声器及其后声腔形成的方法， 终端安装平面作为低音扬声器腔体的一部分， 终端安装平面与外壳形成低音 扬声器后声腔， 与低音扬声器单独使用后盖相比， 能够增加强度， 并避免出 现后盖振动的问题和对外辐射声音； 还能够节省低音扬声器腔体的后盖部分， 降低成本。 为了实现上述以及相关目的， 本发明的一个或多个方面包括后面将详细 说明并在权利要求中特别指出的特征。 下面的说明以及附图详细说明了本发 明的某些示例性方面。 然而， 这些方面指示的仅仅是可使用本发明的原理的 各种方式中的一些方式。 此外， 本发明旨在包括所有这些方面以及它们的等 同物。 附图说明
通过参考以下结合附图的说明及权利要求书的内容， 并且随着对本发明 的更全面理解， 本发明的其它目的及结果将更加明白及易于理解。 在附图中： 图 1为根据本发明实施例的低音扬声器的剖视图；
图 2为根据本发明另一实施例的低音扬声器应用终端安装结构示意图； 图 3为根据本发明另一实施例的低音扬声器应用终端安装俯视图； 图 4为根据本发明另一实施例的低音扬声器应用终端安装剖视图； 图 5为根据本发明另一实施例的低音扬声器应用终端安装侧视图； 图 6为根据本发明另一实施例的低音扬声器的后声腔形成方法流程图。 其中的附图标记包括： 终端安装平面 1、 螺丝 2、 第二密封垫 3、 第一密 封垫 3 '、 外壳 4、 网罩 5、 低音扬声器单体 6、 后声腔 7、 支撑部件 8、 低音 扬声器的声腔 9、 平板 A、 平板 B、 平板 C、 平板 D、 振膜 10、 驱动单元 11、 FPCB连接件 12。
在所有附图中相同的标号指示相似或相应的特征或功能。 具体实施方式
在下面的描述中， 出于说明的目的， 为了提供对一个或多个实施例的全 面理解， 阐述了许多具体细节。 然而， 很明显， 也可以在没有这些具体细节 的情况下实现这些实施例。 以下将结合附图对本发明的具体实施例进行详细 描述。
图 1为根据本发明实施例的低音扬声器剖视图。
如图 1所示， 本发明提供的低音扬声器， 包括低音扬声器单体 6、 用于固 定低音扬声器单体的外壳 4、低音扬声器单体 6与外壳 4形成的低音扬声器的 声腔 （未在图 1中标出）、 第一密封垫 3 '、 第二密封垫 3和终端安装平面 1。
其中， 与低音扬声器固定安装的终端安装平面为 1 低音扬声器的后盖， 终端安装平面 1通过第一密封垫 3 ' 与外壳 4一起形成低音扬声器的后声腔。 即： 低音扬声器的声腔与终端安装平面 1组成一个后声腔 7， 终端安装平面 1 作为低音扬声器的后盖。 低音扬声器工作在大功率条件下， 声腔内的压力很 大， 终端安装平面 1 作为低音扬声器的后盖， 不容易发生振动和对外辐射声 音， 从而保证整个扬声器系统性能不因大功率的振动而发生变化。 第二密封 垫 3设置在扬声器单体 6和外壳 4之间。 gp : 低音扬声器单体 6通过第二密 封垫 3与外壳 4密封闭合， 以避免声音透过外壳 4与低音扬声器单体 6之间 的缝隙辐射到低音扬声器以外。
第一密封垫 3 ' 与外壳 4的外边缘密闭结合， 低音扬声器单体 6被第一密 封垫 3 ' 固定封装在外壳 4中。 gp : 低音扬声器单体 6通过第一密封垫 3 ' 与 终端安装平面 1密封闭合， 采用第二密封垫 3 ' 的目的是能够完全封闭低音扬 声器单体 6与终端安装平面 1的缝隙， 防止声音对外辐射。
在外壳的声孔的上方设置有网罩 5， 网罩 5用于防尘， 以避免尘埃进入低 音扬声器单体 6内部， 保护低音扬声器单体 6能正常工作。
在外壳 4上对应于固定低音扬声器的位置开设有声孔， 声孔的形状和大 小与低音扬声器的形状和大小相对应。
在本发明中， 低音扬声器单体 6与外壳 4固定结合， 外壳 4与低音扬声 器的终端安装平面 1 固定连接； 优选的， 外壳 4与低音扬声器的终端安装平 面 1通过螺丝 2或者支持部件固定连接。
低音扬声器的安装终端包括墙面、 桌面和平板电视等。 墙面和桌面为硬 平面， 在图 1所示的实施例中， 终端安装平面 1为墙面或者硬平面。
在本发明中， 低音扬声器单体包括振膜和至少两个相互独立的驱动单元。 在图 1所示的实施例中， 低音扬声器单体 6包括振膜 10和六个相互独立的驱 动单元 11。振膜 10包括位于中心位置的球顶部和位于边缘位置的折环部。驱 动单元 11包括音圈单元和与音圈单元相对应的磁路单元。 音圈单元贴合固定 在振膜 10的球顶部。
低音扬声器单体包括振膜和四个或者六个相互独立的驱动单元； 驱动单 元包括音圈单元和与音圈单元相对应的磁路单元； 如果该低音扬声器中包含 四个驱动单元， 可以将四个驱动单元中的音圈单元分别设置在振膜的球顶部 的四个角部； 如果该低音扬声器中包含六个驱动单元， 可以将驱动单元的音 圈单元均匀设置在振膜的球顶部的周边位置， 也可以以分散的不规则排列方 式设置在球顶部上， 以避免谐振并且驱动力均匀。
低音扬声器单体 6还包括安装平面和设置在安装平面周围的环形侧壁， 在安装平面上设置有用于收容固定磁路单元的安装孔以及贯通安装平面的出 声孔， 环形侧壁的上侧面与振膜的折环部固定连接； 其中， 安装孔的数量和 位置与贴合在振膜的球顶部的音圈的数量和位置相对应。
音圈单元通过 FPCB连接件 12与外部电路电连接， 也就是说， FPCB连 接件 12用于电连通低音扬声器的内部电路和外部电路。由于 FPCB连接件 12 的中间部分结合在振膜 10上设置有音圈的一侧，因此，在扬声器产品中， FPCB 连接件 12的中间部分位于安装平面靠近振膜 10的一侧， FPCB连接件 12的 两端部从出声孔延伸至安装平面远离振膜 10的一侧。
多个相互独立的驱动单元能够使驱动力均匀， 产生更大的驱动力， 能够 作用于功率更大的电子装置或者与墙面和桌面等结构通过螺丝固定。
由于成本和振膜需要均匀振动的原因， 一般应用的低音扬声器单体包括 四个或者六个驱动单元。 在本发明中， 低音扬声器的安装终端包括墙面、 桌面和平板电视的背部 平面， 上述的安装终端为墙面或者硬平面， 下面描述的终端为平板电视。
图 2、 图 3、 图 4和图 5分别为根据本发明另一实施例的低音扬声器应用 终端安装结构示意图、 安装俯视图、 剖视图和安装侧视图。
如图 2、 图 3图 4和图 5所示， 本发明提供的低音扬声器， 包括低音扬声 器单体 6、 网罩 5、 低音扬声器单体 6与外壳形成的低音扬声器的声腔 9、 第 二密封垫 3和第一密封垫 3 ' 和与平板电视连接的支撑部件 8。
图 2所示的与平板电视连接的支撑部件 8， 由两个相互平行的平板 A和 平板 B以及固定连接两个平板 A和 B之间较短的平板 C和较短的平板 D的 组成， 平板 A的长度大于平板 B的长度， 平板 B、 平板 C和平板 D连接组成 三棱柱体， 因为三角形具有稳定性， 所以三棱柱体结构连接比较稳固。
如图 5所示， 支撑部件 8的平板 B与外壳 4连接， 支撑部件 8的平板 A 与平板电视连接。如图 3所示， 低音扬声器 6安装有两个支撑部件 8， 支撑部 件 8设置在外壳 4上声孔的两侧， gp : 两个支撑部件 8设置在低音扬声器的 声腔 9的两侧， 并且两个支撑部件 8与平板电视连接， 从而低音扬声器的声 腔 9与平板电视组成一个后声腔， gP : 平板电视通过第一密封垫与外壳一起 形成低音扬声器的后声腔。 平板电视作为低音扬声器的后盖， 增大了后盖的 强度， 不会出现后盖振动的问题。 低音扬声器即使工作在大功率条件下， 平 板电视作为低音扬声器的后盖， 也不容易发生振动和声音对外辐射， 从而保 证整个扬声器系统性能不因大功率的振动而发生变化。
利用平板电视作为低音扬声器的后盖， 同时还能节省低音扬声器 6 的声 腔的后盖部分， 从而能够降低成本。
低音扬声器单体 6通过第二密封垫 3和第一密封垫 3 '分别与外壳 4和平 板电视密封闭合， 以避免声音透过外壳 4与低音扬声器 6之间的缝隙辐射到 低音扬声器 6以外； 采用密封垫 3 ' 的目的是能够完全封闭低音扬声器与平板 电视之间的缝隙， 防止声音对外辐射。
如图 4所示， 低音扬声器单体 6与外壳 4形成低音扬声器的声腔 9， 为了 增大低音扬声器的声腔 9 的等效体积， 还可以在声腔中设置吸音材料或者气 体吸附材料， 以在有限的空间范围内尽量提高扬声器的低频音效； 同时低音 扬声器的声腔 9与电视组成一个后声腔； 这两种方式组合在一起能够更好的 保证整个扬声器系统性能， 并且不会出现后盖振动的问题。
其中，网罩 5设置在外壳的声孔上方，用以防尘和保护低音扬声器单体 6。 在图 4所示的实施例中， 低音扬声器单体 6包括六个相互独立的驱动单 元， 这六个相互独立的驱动单元能够提高扬声器的灵敏度， 平衡地驱动低音 扬声器的振膜， 并且驱动力均匀， 产生更大的驱动力， 能够作用于功率较大 的电视， 同时也能够使低音扬声器的结构更轻更薄。
在上述低音扬声器的基础上， 本发明提供的低音扬声器的后声腔形成方 法， 如图 6所示， 图 6为根据本发明实施例的低音扬声器的后声腔形成方法 流程图， 具体过程如下：
S610: 通过密封垫将低音扬声器单体固定在外壳中；
S620: 将外壳通过另一密封垫与终端安装平面固定， 终端安装平面作为 低音扬声器的后盖， 与外壳一起形成低音扬声器的后声腔； 其中，
在外壳上对应于固定扬声器单体的位置开设有声孔， 并且， 声孔的形状 和大小与低音扬声器的形状和大小相对应。
在上述低音扬声器的后声腔形成方法步骤 S620中， 外壳与终端安装平面 通过螺丝或者支撑部件固定连接， 终端安装平面为墙面、 桌面或者平板电视。
在上述方法的步骤 S620中， 终端安装平面为平板电视， 外壳与平板电视 通过支撑部件连接， 支撑部件包括相互平行的两个平板以及固定连接两个平 板之间的短板， 并且， 两个平板的长度不相等， 两个短板与两个平板中的其 中一个较短的平板之间形成三棱柱结构； 因为三角形具有稳定性， 所以三棱 柱体结构连接比较稳固。
在上述方法过程中， 在外壳的声孔上设置有网罩， 网罩用以防尘， 并保 护低音扬声器单体正常工作。 通过上述实施方式可以看出， 本发明提供的低音扬声器及其后声腔形成 的方法， 终端安装平面作为低音扬声器腔体的一部分， 与低音扬声器的腔体 共同组成一个后声腔， 从而与低音扬声器单独使用后盖相比， 能够增加强度， 避免出现后盖振动的问题和对外辐射声音， 以保证整个低音扬声器的系统性 能不会变差； 同时装终端作为低音扬声器腔体的一部分， 还能够节省低音扬 声器腔体的后盖部分， 从而降低成本。 如上参照附图以示例的方式描述了根据本发明提出的低音扬声器及其后 声腔形成的方法。 但是， 本领域技术人员应当理解， 对于上述本发明所提出 的低音扬声器及其后声腔形成的方法， 还可以在不脱离本发明内容的基础上 做出各种改进。 因此， 本发明的保护范围应当由所附的权利要求书的内容确 定。

Claims

权 利 要 求 书
1、 一种低音扬声器， 包括低音扬声器单体、 第一密封垫、 第二密封垫和 外壳， 其中，
所述第一密封垫与所述外壳的外边缘密闭结合；
所述低音扬声器单体被所述第一密封垫固定封装在所述外壳中， 所述第 二密封垫设置在所述低音扬声器单体和所述外壳之间；
在所述外壳上对应于固定所述低音扬声器的位置开设有声孔， 所述声孔 的形状和大小与所述低音扬声器的形状和大小相对应；
与所述低音扬声器固定安装的终端安装平面为所述低音扬声器的后盖， 所述终端安装平面通过所述第一密封垫与所述外壳一起形成所述低音扬声器 的后声腔。
2、 如权利要求 1所述的低音扬声器， 其中，
所述外壳与所述终端安装平面通过螺丝或者支撑部件固定连接。
3、 如权利要求 2所述的低音扬声器， 其中，
所述支撑部件设置在所述外壳上所述声孔的两侧。
4、 如权利要求 3所述的低音扬声器， 其中，
所述支撑部件包括相互平行的两个平板以及固定连接所述两个平板之间 的短板， 并且， 所述两个平板的长度不相等。
5、 如权利要求 4所述的低音扬声器， 其中，
所述两个短板与所述两个平板中的其中一个较短的平板之间形成三棱柱
6、 如权利要求 1〜5中任一项所述的低音扬声器， 其中，
在所述外壳的声孔上设置有网罩。
1
7、 如权利要求 1〜5中任一项所述的低音扬声器， 其中，
所述低音扬声器单体包括振膜、 至少两个相互独立的驱动单元、 安装平 面和设置在安装平面周围的环形侧壁；
所述振膜包括位于中心位置的球顶部和位于边缘位置的折环部， 所述驱 动单元包括音圈单元和与音圈单元相对应的磁路单元； 所述音圈单元贴合固 定在所述振膜的球顶部；
在所述安装平面上设置有用于收容固定所述磁路单元的安装孔以及贯通 所述安装平面的出声孔， 所述环形侧壁的上侧面与所述振膜的折环部固定连 接； 其中，
所述安装孔的数量和位置与贴合在所述振膜的球顶部的音圈单元的数量 和位置相对应。
8、 如权利要求 1〜5中任一项所述的低音扬声器， 其中，
所述低音扬声器单体包括振膜和四个或者六个相互独立的驱动单元； 所述振膜包括位于中心位置的球顶部和位于边缘位置的折环部； 所述驱动单元包括音圈单元和与音圈单元相对应的磁路单元； 在所述振 膜的球顶部的四个角部分别结合有四个音圈单元。
9、 一种低音扬声器的后声腔形成方法， 包括：
通过密封垫将低音扬声器单体固定在外壳中；
将所述外壳与终端安装平面固定， 所述终端安装平面作为所述低音扬声 器的后盖， 与所述外壳一起形成所述低音扬声器的后声腔； 其中，
在所述外壳上对应于固定所述扬声器单体的位置开设有声孔， 并且， 所 述声孔的形状和大小与所述低音扬声器的形状和大小相对应。
10、 如权利要求 9所述的低音扬声器的后声腔形成方法， 其中， 所述外壳与所述终端安装平面通过螺丝或者支撑部件固定连接。
11、 如权利要求 10所述的低音扬声器的后声腔形成方法， 其中， 所述支撑部件包括相互平行的两个平板以及固定连接所述两个平板之间
2 的短板， 并且， 所述两个平板的长度不相等。
12、 如权利要求 9所述的低音扬声器的后声腔形成方法， 其中， 所述的终端安装平面为墙面、 桌面或者平板电视。
13、 如权利要求 9〜12 中任一项所述的低音扬声器的后声腔形成方法， 其中，
在所述外壳的声孔上设置有网罩。
PCT/CN2013/076600 2013-05-29 2013-05-31 低音扬声器及其后声腔形成方法 WO2014190556A1 (zh)

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US9866935B2 (en) 2018-01-09
US20160127824A1 (en) 2016-05-05

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