WO2022067972A1 - 扬声器箱 - Google Patents

扬声器箱 Download PDF

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Publication number
WO2022067972A1
WO2022067972A1 PCT/CN2020/127739 CN2020127739W WO2022067972A1 WO 2022067972 A1 WO2022067972 A1 WO 2022067972A1 CN 2020127739 W CN2020127739 W CN 2020127739W WO 2022067972 A1 WO2022067972 A1 WO 2022067972A1
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WO
WIPO (PCT)
Prior art keywords
sound
section
sound outlet
upper cover
diaphragm
Prior art date
Application number
PCT/CN2020/127739
Other languages
English (en)
French (fr)
Inventor
宋威
令狐荣林
肖波
章统
孔晨亮
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)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.)
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Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022067972A1 publication Critical patent/WO2022067972A1/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • 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

Definitions

  • the utility model relates to the field of electro-acoustic conversion, in particular to a speaker box used in portable mobile electronic products.
  • Speaker box also known as speaker
  • the speaker box is widely used in portable mobile electronic products, such as mobile phones, to realize the conversion of audio signals into sound playback.
  • the speaker box has high loudness and amplitude.
  • a speaker box of the related art includes a housing with a housing space and a sound-emitting unit housed in the housing space; the housing is provided with a sound outlet passing through the housing, and the sound-emitting unit connects the housing space to the sound-emitting unit. It is divided into a front cavity and a rear cavity, and the sound outlet communicates the front cavity with the outside world and forms a side sound-emitting structure; the sound-emitting unit includes a basin frame, a vibration system respectively fixed to the basin frame and a magnetic gap.
  • the magnetic circuit system drives the vibration system to vibrate and sound
  • the vibration system includes a diaphragm fixed on the basin frame and a diaphragm fixed on the diaphragm and inserted in the magnetic gap to drive the
  • the vibrating membrane vibrates and emits a voice coil; the vibrating membrane is accommodated in the front cavity, and the vibrating membrane has an arc-shaped structure and a ring-shaped ring portion.
  • the ring portion is set as an arc-shaped structure formed by concave in the direction away from the rear cavity along the vibration direction of the diaphragm.
  • This structure makes the diaphragm
  • the airflow generated in the front cavity during vibration flows to the sound outlet, because the obstruction of the folded ring portion makes the airflow unsmooth, and also because of the arc structure of the folded ring portion, the sound outlet is The passage through which the air flows through the mouth is narrowed, so that the flow rate of the air flow is high, so that the noise of sound whistling is generated, and the acoustic performance of the speaker box is poor.
  • the purpose of the utility model is to provide a speaker box with low airflow noise and excellent acoustic performance.
  • the present invention provides a loudspeaker box, which includes a housing with a housing space and a sound-emitting unit housed in the housing space; the housing is provided with a sound outlet passing through it,
  • the sound-generating unit includes a diaphragm having a ring-shaped first folded ring portion, the sound-generating unit divides the receiving space into a front cavity and a rear cavity, and the sound outlet separates the front cavity from the outside world.
  • the ring portion is a rectangular structure and is an arc-shaped structure formed by concave in the direction away from the rear cavity along the vibration direction of the diaphragm, and the first ring portion includes a first side adjacent to the sound outlet. , a second side opposite to the first side, and two third sides respectively connecting the first side and the second side, and the first side is located at the part opposite to the sound outlet.
  • the rear cavity is recessed to form a first escape groove, so as to reduce the flow rate of the air flowing through the sound outlet when the diaphragm vibrates.
  • a portion of the second side located directly opposite the sound outlet is recessed toward the rear cavity to form a second escape groove.
  • the shape of the first side and the second side are exactly the same.
  • the first side includes a first section facing the sound outlet, two second sections bent and extended from opposite ends of the first section in a direction away from the rear cavity, and Two third segments are bent and extended from the second segment in a direction away from the first segment, and the two third segments are respectively connected with one of the adjacent third sides, and the first The segment is the bottom surface of the first escape groove, and the second segment is the side surface of the first escape groove; the second side includes a fourth segment facing the sound outlet, and the fourth segment is formed by the fourth The opposite ends of the segment are bent and extended in a direction away from the rear cavity, and two sixth segments are bent and extended in a direction away from the fourth segment from the second segment.
  • the sixth section is respectively connected with one of the adjacent third sides, the fourth section is the bottom surface of the second avoidance groove, and the fifth section is the side surface of the second avoidance groove.
  • the height of the first section and the casing on one side of the rear cavity is smaller than the height between the third section and the casing on the side of the rear cavity Height; along the vibration direction of the diaphragm, the height of the fourth section and the shell on the side of the rear cavity is less than the height of the sixth section and the shell on the side of the rear cavity .
  • the thickness of the first side, the thickness of the second side and the thickness of the third side are the same.
  • a surface of the first folded ring portion located in the front cavity is recessed toward the rear cavity to form a plurality of guide grooves, and the extending direction of the guide grooves is the same as the flow direction of the airflow.
  • the sound-generating unit includes a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and emit sound, the vibration system including the vibrating membrane, and the vibrating membrane is in the shape of a It is annular and arranged around the magnetic circuit system, the outer peripheral side of the diaphragm is fixed to the basin frame, and the inner peripheral side of the diaphragm is fixed to the magnetic circuit system.
  • the diaphragm includes the first folded ring portion, a second folded ring portion in a ring shape, surrounding the first folded ring portion and spaced apart from each other, extending from the first folded ring portion to the second folded ring portion.
  • the first vibrating part bent and extended from the two folded ring parts; the second vibrating part bent and extended from the second folded ring part to the first folded ring part; a first fixed part that is folded and extended, a second fixed part that is bent and extended from the inner peripheral side of the second folded ring part, and the ball tops respectively covered on the first vibration part and the second vibration part
  • the first fixing part is fixed to the basin frame, the second fixing part is fixed to the magnetic circuit system; the first vibrating part is connected to the second vibrating part.
  • the housing includes an upper cover and a lower cover that is covered on the upper cover and together with the upper cover to enclose the receiving space
  • the upper cover includes an upper cover that is spaced from the diaphragm. a plate and an upper cover side wall bent and extended from the peripheral edge of the upper cover plate, the sound outlet is located on the upper cover side wall, and the sound generating unit and the upper cover together enclose the front cavity
  • the lower cover includes a lower cover plate opposite to the upper cover plate and a lower cover side wall which is bent and extended from the peripheral edge of the lower cover plate and abuts against the side wall of the upper cover.
  • the back cavity is formed together with the lower cover; the basin frame is respectively fixed to the side wall of the upper cover and the side wall of the lower cover to suspend the sounding unit in the receiving space.
  • the ring-shaped first folded ring portion passing through the diaphragm is set to have a rectangular structure, and the first folded ring portion is specifically divided into the first folded ring portion adjacent to the sound outlet.
  • One side, the second side opposite to the first side, and the two third sides connecting the first side and the second side respectively, and the part of the first side located opposite to the sound outlet is recessed toward the back cavity to form the first side. Avoid the groove to reduce the flow rate of the air flowing through the sound outlet when the diaphragm vibrates.
  • This structure forms a first avoidance groove due to the depression of the first side, so that the volume of the air flow passage from the air in the front cavity to the sound outlet is increased, and the flow rate of the air flowing through the sound outlet is reduced, and it is not easy to form a sound whistling. noise, so that the speaker box airflow noise is small, and the speaker box acoustic performance is excellent.
  • Fig. 1 is the stereoscopic structure schematic diagram of the speaker box of the present invention
  • Fig. 2 is the partial three-dimensional structure exploded schematic diagram of the speaker box of the present invention
  • Fig. 3 is a sectional view along line A-A in Fig. 1;
  • Fig. 4 is the stereo structure schematic diagram of the sound-generating unit of the speaker box of the present invention.
  • FIG. 5 is a schematic exploded view of a partial three-dimensional structure of a sound-generating unit of the speaker box of the present invention.
  • FIG. 6 is a schematic three-dimensional structural diagram of the first folding ring portion of the speaker box of the present invention.
  • the speaker box 100 includes a housing 1 having a accommodating space 10 and a sound generating unit 2 accommodated in the accommodating space 10 .
  • the housing 1 may be an integral structure or a split structure.
  • the casing 1 has a split structure.
  • the housing 1 includes an upper cover 11 , a lower cover 12 covering the upper cover 11 and jointly enclosing the receiving space 10 with the upper cover 11 , and a sound outlet 110 penetrating the upper cover 11 .
  • the upper cover 11 includes an upper cover plate 111 spaced from the diaphragm 3 and an upper cover side wall 112 bent and extended from the periphery of the upper cover plate 111 .
  • the lower cover 12 includes a lower cover 121 disposed opposite to the upper cover 111 and a lower cover side wall 122 that is bent and extended from the periphery of the lower cover 121 and abuts against the upper cover side wall 112 .
  • the housing 1 is provided with a sound outlet 110 extending therethrough.
  • the sound outlet 110 is located on the side wall 112 of the upper cover, and this structure enables the speaker box 100 to form a side sounding structure.
  • the sounding unit 2 is fixed to the casing 1 .
  • the sound generating unit 2 is fixed to the upper cover side wall 112 and the lower cover side wall 122 .
  • the sounding unit 2 divides the receiving space 10 into a front cavity 5 and a rear cavity 6 .
  • the sounding unit 2 and the upper cover 11 together form the front cavity 5, and the sound outlet 110 communicates the front cavity 5 with the outside world and forms a side sounding structure.
  • the front cavity 6 improves the acoustic performance of the speaker cabinet 100, especially the high frequency acoustic performance.
  • the sounding unit 2 and the lower cover 12 together form the rear cavity 6 .
  • the rear cavity 6 improves the acoustic performance of the speaker box 100, especially the low frequency acoustic performance.
  • the sound generating unit 2 includes a basin frame 21 , a vibration system 22 respectively fixed to the basin frame 21 , and a magnetic circuit system 23 which drives the vibration system 22 to vibrate and emit sound and has a magnetic gap 230 .
  • the magnetic circuit system 23 includes a basin frame 21 , a vibration system 22 respectively fixed to the basin frame 21 , and a magnetic circuit system 23 which drives the vibration system 22 to vibrate and emit sound and has a magnetic gap 230 .
  • the basin frame 21 is respectively fixed to the upper cover side wall 112 and the lower cover side wall 122 to suspend the sounding unit 2 in the receiving space 10 .
  • the vibration system 22 includes a voice coil 221 and a diaphragm 3 .
  • the voice coil 221 is inserted into the magnetic gap 230 to drive the diaphragm 3 to vibrate and produce sound.
  • the diaphragm 3 is used for vibrating and producing sound.
  • the vibrating membrane 3 is accommodated in the front cavity 5 , and when the vibrating membrane 3 vibrates and emits sound, the air flow formed by the air in the front cavity 5 is exchanged with the outside world through the sound outlet 110 .
  • the diaphragm 3 is annular and is arranged around the magnetic circuit system 23 .
  • the diaphragm 3 includes the ring-shaped first ring portion 4 , the ring-shaped second ring portion 31 that surrounds the first ring portion 4 and is spaced apart from each other.
  • a first vibrating portion 32 bent and extended from the folded ring portion 4 to the second folded ring portion 31
  • a second vibrating portion 32 bent and extended from the second folded ring portion 31 to the first folded ring portion 4 33.
  • a first fixing portion 34 bent and extended from the outer peripheral side of the first folding ring portion 4
  • a second fixing portion 35 bent and extended from the inner peripheral side of the second folding ring portion 31 , and covered respectively. on the ball tops 36 of the first vibrating part 32 and the second vibrating part 33 .
  • the outer peripheral side of the diaphragm 3 is fixed to the basin frame 21 .
  • the first fixing portion 34 is fixed to the basin frame 21 .
  • the inner peripheral side of the diaphragm 3 is fixed to the magnetic circuit system 23 .
  • the second fixing portion 35 is fixed to the magnetic circuit system 23 .
  • the first vibrating portion 32 is connected to the second vibrating portion 33 .
  • This structure makes the first vibrating part 32 , the second vibrating part 33 and the ball top 36 form an integrated structure, so that the acoustic performance of the vibrating membrane 21 is good, and at the same time, it can also prevent the vibration caused by vibration. Layered.
  • the first folding ring portion 4 has an arc-shaped structure formed by concave in the direction away from the rear cavity 6 along the vibration direction of the diaphragm 3 . This structure makes the internal sound cavity of the sounding unit 2 large, and the internal components do not need to avoid the first folded ring portion 4 , which is beneficial to the layout and assembly of the sounding unit 2 .
  • the first folding ring portion 4 has a rectangular structure. Specifically, the first folding ring portion 4 includes a first side 41 adjacent to the sound outlet 110 , a second side 42 opposite to the first side 41 , and connecting the first side 41 and the first side 41 respectively. The two third sides 43 of the second side 42 .
  • the thickness of the first side 41 , the thickness of the second side 42 and the thickness of the third side 43 are the same. This structure is beneficial to the manufacture and installation of the first folded ring portion 4 .
  • the first side 41 includes a first section 411 facing the sound outlet 110 , and two opposite ends of the first section 411 that are bent and extended in a direction away from the rear cavity 6 .
  • two of the third segments 413 are respectively connected with one of the adjacent third sides 43 .
  • the portion of the first side 41 located directly opposite the sound outlet 110 is recessed toward the rear cavity 6 to form a first escape groove 410 .
  • the first section 411 is the bottom surface of the first escape groove 410 .
  • the second section 412 is the side surface of the first escape groove 410 .
  • the height of the first segment 411 and the housing 1 on the side of the rear cavity 6 is smaller than the height of the third segment 413 and the housing 1 on the side of the back cavity 6 .
  • the height of one side of the rear cavity 6 is described.
  • this structure increases the height between the first section 411 and the upper cover plate 111 , thereby increasing the volume of the air flow passage from the air in the front cavity 5 to the sound outlet 110 .
  • the structure of the first avoidance groove 410 reduces the flow velocity of the air flow through the sound outlet 110 when the diaphragm 3 vibrates, that is, the flow velocity of the air flow through the sound outlet 110 is reduced, and it is difficult to form a sound whistle. Therefore, the airflow noise of the speaker box 100 is small, and the acoustic performance of the speaker box 100 is excellent.
  • the first side 41 is connected to the The second side 42 is identical in shape.
  • the second side 42 includes a fourth section 421 facing the sound outlet 110 , and two opposite ends of the fourth section 421 that are bent and extended in a direction away from the rear cavity 6 .
  • the two sixth segments 423 are respectively connected with one of the adjacent third sides 43 .
  • the portion of the second side 42 located opposite the sound outlet 110 is recessed toward the rear cavity 6 to form the second escape groove 420 .
  • the fourth section 421 is the bottom surface of the second escape groove 420 .
  • the fifth section 422 is the side surface of the second escape groove 420 . Specifically, along the vibration direction of the diaphragm 3 , the height of the fourth segment 421 and the housing 1 on the side of the rear cavity 6 is smaller than that where the sixth segment 423 and the housing 1 are located. The height of one side of the rear cavity 6 is described.
  • this structure increases the height between the fourth section 421 and the upper cover plate 111, and the design of the second escape groove 420 is beneficial to the airflow in the front cavity 5, preventing the The flow direction of the airflow is rebounded by the second side 42 and the airflow direction is inconsistent, resulting in noise, especially the noise of sound howling, so that the airflow noise of the speaker box 100 is small, and the acoustic performance of the speaker box 100 is excellent.
  • first side 41 and the second side 42 are respectively disposed on opposite sides of the long axis of the first folding ring portion 4
  • the two third sides 43 are respectively disposed on the The opposite sides of the short axis of the first folded ring portion 4 .
  • This arrangement is beneficial to increase the length of the first escape groove 410 and the length of the second escape groove 420 , so that the airflow can flow more smoothly, so that the acoustic performance of the speaker box 100 is excellent.
  • the first side 41 and the second side 42 are respectively arranged on opposite sides of the short axis of the first folding ring portion 4 to achieve smoother airflow. function.
  • the second section 412 and the fifth section 422 are both set as radian balanced curved surfaces, which is beneficial to the manufacture of the first folding ring portion 4 and enables the airflow to flow smoothly , thereby improving the acoustic performance of the speaker cabinet 100 .
  • a plurality of guide grooves 40 are formed on the surface of the first folding ring portion 4 located in the front cavity 5 and concave in the direction of the rear cavity 6 .
  • the extending direction of the guide groove 40 is the same as the flow direction of the airflow.
  • the ring-shaped first folded ring portion passing through the diaphragm is set to have a rectangular structure, and the first folded ring portion is specifically divided into the first folded ring portion adjacent to the sound outlet.
  • One side, the second side opposite to the first side, and the two third sides connecting the first side and the second side respectively, and the part of the first side located opposite to the sound outlet is recessed toward the back cavity to form the first side. Avoid the groove to reduce the flow rate of the air flowing through the sound outlet when the diaphragm vibrates.
  • This structure forms a first avoidance groove due to the depression of the first side, so that the volume of the air flow passage from the air in the front cavity to the sound outlet is increased, and the flow rate of the air flowing through the sound outlet is reduced, and it is not easy to form a sound whistling. noise, so that the speaker box airflow noise is small, and the speaker box acoustic performance is excellent.

Abstract

本实用新型提供了一种扬声器箱，其包括具有收容空间的壳体和发声单体；壳体设有出声口, 出声口形成侧发声结构，发声单体包括具有呈环状的第一折环部的振膜，发声单体将收容空间分隔成前腔和后腔，振膜收容于前腔，振膜振动发声时将前腔内空气形成的气流经由出声口与外界交换；第一折环部为呈矩形结构并凹陷形成的弧形结构，第一折环部包括与出声口相邻的第一边、与第一边相对的第二边以及分别连接第一边和第二边的两条第三边，第一边位于出声口正对的部分向后腔方向凹陷形成第一避让槽，以使振膜振动时流经出声口的气流的流速降低。与相关技术相比，本实用新型的扬声器箱的气流噪声小且声学性能优。

Description

扬声器箱 技术领域
本实用新型涉及电声转换领域，尤其涉及一种运用于便携式移动电子产品的扬声器箱。
背景技术
扬声器箱又名扬声器，广泛运用于便携式移动电子产品中，比如手机，实现将音频信号转化为声音播放，扬声器箱响度大，振幅度。
相关技术的扬声器箱其包括具有收容空间的壳体和收容于所述收容空间内的发声单体；所述壳体设有贯穿其上的出声口, 所述发声单体将所述收容空间分隔成前腔和后腔，所述出声口将所述前腔与外界连通并形成侧发声结构；所述发声单体包括盆架、分别固定于所述盆架的振动系统和具有磁间隙的磁路系统，所述磁路系统驱动所述振动系统振动发声，所述振动系统包括固定于所述盆架的振膜以及固定于所述振膜并插设于所述磁间隙以驱动所述振膜振动发声的音圈；所述振膜收容于所述前腔，所述振膜具有弧形结构且呈环状的折环部。
然而，相关技术的扬声器箱的所述振膜振动发声时将所述前腔内空气形成的气流经由所述出声口与外界交换，但是由于所述振膜的所述折环部为了使得所述发声单体的内部腔体体积大，一般将所述折环部设置为沿所述振膜的振动方向呈向远离所述后腔方向凹陷形成的弧形结构，该结构使得所述振膜振动时在所述前腔内产生的气流流动至所述出声口，因为所述折环部的阻挡，使得气流不顺畅，同时也因为所述折环部的弧形结构使得所述出声口气流流动的通道变窄，从而使得所述气流流速高，从而产生声音啸叫的噪声，使得扬声器箱的声学性能差。
因此，实有必要提供一种新的扬声器箱解决上述技术问题。
 技术问题
本实用新型的目的在于提供一种气流噪声小且声学性能优的扬声器箱。
 技术解决方案
为了达到上述目的，本实用新型提供了一种扬声器箱，其包括具有收容空间的壳体和收容于所述收容空间内的发声单体；所述壳体设有贯穿其上的出声口, 所述发声单体包括具有呈环状的第一折环部的振膜，所述发声单体将所述收容空间分隔成前腔和后腔，所述出声口将所述前腔与外界连通并形成侧发声结构，所述振膜收容于所述前腔，所述振膜振动发声时将所述前腔内空气形成的气流经由所述出声口与外界交换；所述第一折环部为呈矩形结构并沿所述振膜的振动方向呈向远离所述后腔方向凹陷形成的弧形结构，所述第一折环部包括与所述出声口相邻的第一边、与所述第一边相对的第二边以及分别连接所述第一边和所述第二边的两条第三边，所述第一边位于所述出声口正对的部分向所述后腔方向凹陷形成第一避让槽，以使所述振膜振动时流经所述出声口的气流的流速降低。
优选的，所述第二边位于所述出声口正对的部分向所述后腔方向凹陷形成第二避让槽。
优选的，所述第一边与所述第二边形状完全相同。
优选的，所述第一边包括与所述出声口正对的第一段、由所述第一段的相对两端向远离所述后腔的方向弯折延伸的两个第二段以及由所述第二段向远离所述第一段的方向弯折延伸的两个第三段，两个所述第三段分别与各自相邻的一个所述第三边连接，所述第一段为所述第一避让槽的底面，所述第二段为所述第一避让槽的侧面；所述第二边包括与所述出声口正对的第四段、由所述第四段的相对两端向远离所述后腔的方向弯折延伸的两个第五段以及由所述第二段向远离所述第四段的方向弯折延伸的两个第六段，两个所述第六段分别与各自相邻的一个所述第三边连接，所述第四段为所述第二避让槽的底面，所述第五段为所述第二避让槽的侧面。
优选的，沿所述振膜的振动方向，所述第一段与所述壳体位于所述后腔一侧的高度小于所述第三段与所述壳体位于所述后腔一侧的高度；沿所述振膜的振动方向，所述第四段与所述壳体位于所述后腔一侧的高度小于所述第六段与所述壳体位于所述后腔一侧的高度。
优选的，沿所述振膜的振动方向，所述第一边的厚度、所述第二边的厚度以及所述第三边的厚度相同。
优选的，所述第一折环部位于所述前腔的表面向所述后腔的方向凹陷形成多个导向槽，所述导向槽延伸的方向与所述气流的流动方向相同。
优选的，所述发声单体包括盆架、分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统，所述振动系统包括所述振膜，所述振膜呈环状并环绕所述磁路系统设置，所述振膜的外周侧固定于所述盆架，所述振膜的内周侧固定于所述磁路系统。
优选的，所述振膜包括所述第一折环部、呈环状且环绕所述第一折环部并相互间隔的第二折环部、由所述第一折环部向所述第二折环部弯折延伸的第一振动部、由所述第二折环部向所述第一折环部弯折延伸的第二振动部、由所述第一折环部的外周侧弯折延伸的第一固定部、由所述第二折环部的内周侧弯折延伸的第二固定部以及分别盖设于所述第一振动部和所述第二振动部的球顶部，所述第一固定部固定于所述盆架，所述第二固定部固定于所述磁路系统；所述第一振动部连接于所述第二振动部。
优选的，所述壳体包括上盖和盖设于所述上盖并与所述上盖共同围成所述收容空间的下盖，所述上盖包括与所述振膜间隔设置的上盖板和由所述上盖板的周缘弯折延伸的上盖侧壁，所述出声口位于所述上盖侧壁，所述发声单体与所述上盖共同围成所述前腔；所述下盖包括与所述上盖板相对设置的下盖板和由所述下盖板的周缘弯折延伸并抵接于所述上盖侧壁的下盖侧壁，所述发声单体与所述下盖共同围成所述后腔；所述盆架分别固定于所述上盖侧壁和所述下盖侧壁以将所述发声单体悬置于所述收容空间。
 有益效果
与相关技术相比，本实用新型的扬声器箱中通过振膜的呈环状的第一折环部设置为呈矩形结构，并具体将第一折环部划分为与出声口相邻的第一边、与第一边相对的第二边以及分别连接第一边和第二边的两条第三边，并将第一边位于出声口正对的部分向后腔方向凹陷形成第一避让槽，以使振膜振动时流经出声口的气流的流速降低。该结构因第一边凹陷形成第一避让槽，从而使得前腔内的空气到出声口的气流通道体积增大，并使得流经出声口的气流的流速降低，不易形成声音啸叫的噪声，从而使得扬声器箱气流噪声小，并使得扬声器箱声学性能优。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型扬声器箱的立体结构示意图；
图2为本实用新型扬声器箱的部分立体结构分解示意图；
图3为沿图1中A-A线的剖示图；
图4为本实用新型扬声器箱的发声单体的立体结构示意图；
图5为本实用新型扬声器箱的发声单体的部分立体结构分解示意图；
图6为本实用新型扬声器箱的第一折环部的立体结构示意图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
请同时参阅图1-6，本实用新型提供了一种扬声器箱100。所述扬声器箱100包括具有收容空间10的壳体1和收容于所述收容空间10内的发声单体2。
所述壳体1可以为一体结构，可以为分体结构。本实施方式中，所述壳体1为分体结构。具体的，所述壳体1包括上盖11、盖设于所述上盖11并与所述上盖11共同围成所述收容空间10的下盖12以及贯穿其上的出声口110。
所述上盖11包括与所述振膜3间隔设置的上盖板111和由所述上盖板111的周缘弯折延伸的上盖侧壁112。
所述下盖12包括与所述上盖板111相对设置的下盖板121和由所述下盖板121的周缘弯折延伸并抵接于所述上盖侧壁112的下盖侧壁122。
所述壳体1设有贯穿其上的出声口110。具体的，所述出声口110位于所述上盖侧壁112，该结构使得所述扬声器箱100形成侧发声结构。
所述发声单体2固定于所述壳体1。本实施方式中，所述发声单体2固定于所述上盖侧壁112和所述下盖侧壁122。
所述发声单体2将所述收容空间10分隔成前腔5和后腔6。
所述发声单体2与所述上盖11共同围成所述前腔5，所述出声口110将所述前腔5与外界连通并形成侧发声结构。所述前腔6改善了扬声器箱100的声学性能，特别是高频声学性能。
所述发声单体2与所述下盖12共同围成所述后腔6。所述后腔6面改善了所述扬声器箱100的声学性能，特别是低频声学性能。
本实施方式中，所述发声单体2包括盆架21、分别固定于所述盆架21的振动系统22和驱动所述振动系统22振动发声且具有磁间隙230的磁路系统23。所述磁路系统23。
所述盆架21分别固定于所述上盖侧壁112和所述下盖侧壁122以将所述发声单体2悬置于所述收容空间10。
所述振动系统22包括音圈221和振膜3。
所述音圈221插入所述磁间隙230以驱动所述振膜3振动发声。
所述振膜3用于振动发声。所述振膜3收容于所述前腔5，所述振膜3振动发声时将所述前腔5内空气形成的气流经由所述出声口110与外界交换。
所述振膜3呈环状并环绕所述磁路系统23设置。具体的，所述振膜3包括呈环状的所述第一折环部4、呈环状且环绕所述第一折环部4并相互间隔的第二折环部31、由所述第一折环部4向所述第二折环部31弯折延伸的第一振动部32、由所述第二折环部31向所述第一折环部4弯折延伸的第二振动部33、由所述第一折环部4的外周侧弯折延伸的第一固定部34、由所述第二折环部31的内周侧弯折延伸的第二固定部35以及分别盖设于所述第一振动部32和所述第二振动部33的球顶部36。
所述振膜3的外周侧固定于所述盆架21。具体的，所述第一固定部34固定于所述盆架21。
所述振膜3的内周侧固定于所述磁路系统23。具体的，所述第二固定部35固定于所述磁路系统23。
本实施方式中，所述第一振动部32连接于所述第二振动部33。该结构使得所述第一振动部32、所述第二振动部33以及所述球顶部36形成一体结构，从而使得所述振膜21的振动发声的声学性能好，同时也可以防止振动时引起分层。
所述第一折环部4沿所述振膜3的振动方向呈向远离所述后腔6方向凹陷形成的弧形结构。该结构使得所述发声单体2的内部声腔体积大，内部的部件不需要考虑与所述第一折环部4进行避让，有利于所述发声单体2的布局和组装。
所述第一折环部4为呈矩形结构。具体的，所述第一折环部4包括与所述出声口110相邻的第一边41、与所述第一边41相对的第二边42以及分别连接所述第一边41和所述第二边42的两条第三边43。
本实施方式中，沿所述振膜3的振动方向，所述第一边41的厚度、所述第二边42的厚度以及所述第三边43的厚度相同。该结构有利于所述第一折环部4的制造和安装。
具体的，所述第一边41包括与所述出声口110正对的第一段411、由所述第一段411的相对两端向远离所述后腔6的方向弯折延伸的两个第二段412以及由所述第二段412向远离所述第一段411的方向弯折延伸的两个第三段413。其中，两个所述第三段413分别与各自相邻的一个所述第三边43连接。
所述第一边41位于所述出声口110正对的部分向所述后腔6方向凹陷形成第一避让槽410。所述第一段411为所述第一避让槽410的底面。所述第二段412为所述第一避让槽410的侧面。具体的，沿所述振膜3的振动方向，所述第一段411与所述壳体1位于所述后腔6一侧的高度小于所述第三段413与所述壳体1位于所述后腔6一侧的高度。也就是说，该结构增加了所述第一段411与所述上盖板111之间的高度，从而使得前腔5内的空气到所述出声口110的气流通道体积增大，所述第一避让槽410的结构使得所述振膜3振动时流经所述出声口110的气流的流速降低，即使得流经所述出声口110的气流的流速降低，不易形成声音啸叫的噪声，从而使得扬声器箱100气流噪声小，并使得扬声器箱100声学性能优。
本实施方式中，为了更好使得所述第一折环部4在所述前腔5中形成的气流顺畅地流动经由所述出声口110与外界交换，所述第一边41与所述第二边42形状完全相同。
具体的，所述第二边42包括与所述出声口110正对的第四段421、由所述第四段421的相对两端向远离所述后腔6的方向弯折延伸的两个第五段422以及由所述第二段412向远离所述第四段421的方向弯折延伸的两个第六段423。两个所述第六段423分别与各自相邻的一个所述第三边43连接。
所述第二边42位于所述出声口110正对的部分向所述后腔6方向凹陷形成所述第二避让槽420。所述第四段421为所述第二避让槽420的底面。所述第五段422为所述第二避让槽420的侧面。具体的，沿所述振膜3的振动方向，所述第四段421与所述壳体1位于所述后腔6一侧的高度小于所述第六段423与所述壳体1位于所述后腔6一侧的高度。也就是说，该结构增加了所述第四段421与所述上盖板111之间的高度，所述第二避让槽420的设计有利于所述前腔5内的气流流动，防止在所述气流的流动方向受到所述第二边42的反弹引起气流方向不一致而造成噪声，尤其不易形成声音啸叫的噪声，从而使得扬声器箱100气流噪声小，并使得扬声器箱100声学性能优。
本实施方式中，所述第一边41和所述第二边42分别设置于所述第一折环部4的长轴的相对两侧，而两条所述第三边43分别设置于所述第一折环部4的短轴的相对两侧。该设置有利于增大所述第一避让槽410的长度和所述第二避让槽420的长度，从而使得所述气流流动更为顺畅，使得并使得扬声器箱100声学性能优。当然，根据实际设计需要，将所述第一边41和所述第二边42分别设置于所述第一折环部4的短轴的相对两侧也同样可以实现所述气流流动更为顺畅的功能。
本实施方式中，所述第二段412和所述第五段422均设置为呈弧度的平衡曲面，该设置有利于所述第一折环部4的制造，并使得所述气流顺畅地流动，从而改善扬声器箱100声学性能。
为了更好使得所述第一折环部4在所述前腔5中形成的气流顺畅地流动经由所述出声口110与外界交换。本实施方式中，所述第一折环部4位于所述前腔5的表面向所述后腔6的方向凹陷形成多个导向槽40。所述导向槽40延伸的方向与所述气流的流动方向相同。该结构使得在保证发声的性能情况下，所述第一折环部4的表面非常适合流动气体，产生的气体流动噪声小，并可以使得气体流动顺畅，从而使得所述扬声器箱100的声学性能好。
与相关技术相比，本实用新型的扬声器箱中通过振膜的呈环状的第一折环部设置为呈矩形结构，并具体将第一折环部划分为与出声口相邻的第一边、与第一边相对的第二边以及分别连接第一边和第二边的两条第三边，并将第一边位于出声口正对的部分向后腔方向凹陷形成第一避让槽，以使振膜振动时流经出声口的气流的流速降低。该结构因第一边凹陷形成第一避让槽，从而使得前腔内的空气到出声口的气流通道体积增大，并使得流经出声口的气流的流速降低，不易形成声音啸叫的噪声，从而使得扬声器箱气流噪声小，并使得扬声器箱声学性能优。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (10)

  1. 一种扬声器箱，其包括具有收容空间的壳体和收容于所述收容空间内的发声单体；所述壳体设有贯穿其上的出声口, 所述发声单体包括具有呈环状的第一折环部的振膜，所述发声单体将所述收容空间分隔成前腔和后腔，所述出声口将所述前腔与外界连通并形成侧发声结构，所述振膜收容于所述前腔，所述振膜振动发声时将所述前腔内空气形成的气流经由所述出声口与外界交换；其特征在于，所述第一折环部为呈矩形结构并沿所述振膜的振动方向呈向远离所述后腔方向凹陷形成的弧形结构，所述第一折环部包括与所述出声口相邻的第一边、与所述第一边相对的第二边以及分别连接所述第一边和所述第二边的两条第三边，所述第一边位于所述出声口正对的部分向所述后腔方向凹陷形成第一避让槽，以使所述振膜振动时流经所述出声口的气流的流速降低。
  2. 根据权利要求1所述的扬声器箱，其特征在于，所述第二边位于所述出声口正对的部分向所述后腔方向凹陷形成第二避让槽。
  3. 根据权利要求2所述的扬声器箱，其特征在于，所述第一边与所述第二边形状完全相同。
  4. 根据权利要求2所述的扬声器箱，其特征在于，所述第一边包括与所述出声口正对的第一段、由所述第一段的相对两端向远离所述后腔的方向弯折延伸的两个第二段以及由所述第二段向远离所述第一段的方向弯折延伸的两个第三段，两个所述第三段分别与各自相邻的一个所述第三边连接，所述第一段为所述第一避让槽的底面，所述第二段为所述第一避让槽的侧面；所述第二边包括与所述出声口正对的第四段、由所述第四段的相对两端向远离所述后腔的方向弯折延伸的两个第五段以及由所述第二段向远离所述第四段的方向弯折延伸的两个第六段，两个所述第六段分别与各自相邻的一个所述第三边连接，所述第四段为所述第二避让槽的底面，所述第五段为所述第二避让槽的侧面。
  5. 根据权利要求2所述的扬声器箱，其特征在于，沿所述振膜的振动方向，所述第一段与所述壳体位于所述后腔一侧的高度小于所述第三段与所述壳体位于所述后腔一侧的高度；沿所述振膜的振动方向，所述第四段与所述壳体位于所述后腔一侧的高度小于所述第六段与所述壳体位于所述后腔一侧的高度。
  6. 根据权利要求2所述的扬声器箱，其特征在于，沿所述振膜的振动方向，所述第一边的厚度、所述第二边的厚度以及所述第三边的厚度相同。
  7. 根据权利要求1所述的扬声器箱，其特征在于，所述第一折环部位于所述前腔的表面向所述后腔的方向凹陷形成多个导向槽，所述导向槽延伸的方向与所述气流的流动方向相同。
  8. 根据权利要求1所述的扬声器箱，其特征在于，所述发声单体包括盆架、分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统，所述振动系统包括所述振膜，所述振膜呈环状并环绕所述磁路系统设置，所述振膜的外周侧固定于所述盆架，所述振膜的内周侧固定于所述磁路系统。
  9. 根据权利要求8所述的扬声器箱，其特征在于，所述振膜包括所述第一折环部、呈环状且环绕所述第一折环部并相互间隔的第二折环部、由所述第一折环部向所述第二折环部弯折延伸的第一振动部、由所述第二折环部向所述第一折环部弯折延伸的第二振动部、由所述第一折环部的外周侧弯折延伸的第一固定部、由所述第二折环部的内周侧弯折延伸的第二固定部以及分别盖设于所述第一振动部和所述第二振动部的球顶部，所述第一固定部固定于所述盆架，所述第二固定部固定于所述磁路系统；所述第一振动部连接于所述第二振动部。
  10. 根据权利要求8所述的扬声器箱，其特征在于，所述壳体包括上盖和盖设于所述上盖并与所述上盖共同围成所述收容空间的下盖，所述上盖包括与所述振膜间隔设置的上盖板和由所述上盖板的周缘弯折延伸的上盖侧壁，所述出声口位于所述上盖侧壁，所述发声单体与所述上盖共同围成所述前腔；所述下盖包括与所述上盖板相对设置的下盖板和由所述下盖板的周缘弯折延伸并抵接于所述上盖侧壁的下盖侧壁，所述发声单体与所述下盖共同围成所述后腔；所述盆架分别固定于所述上盖侧壁和所述下盖侧壁以将所述发声单体悬置于所述收容空间。
PCT/CN2020/127739 2020-09-30 2020-11-10 扬声器箱 WO2022067972A1 (zh)

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CN114630249B (zh) * 2022-04-26 2024-04-30 歌尔股份有限公司 发声模组和电子设备

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