WO2021128008A1 - Loudspeaker box - Google Patents

Loudspeaker box Download PDF

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Publication number
WO2021128008A1
WO2021128008A1 PCT/CN2019/128003 CN2019128003W WO2021128008A1 WO 2021128008 A1 WO2021128008 A1 WO 2021128008A1 CN 2019128003 W CN2019128003 W CN 2019128003W WO 2021128008 A1 WO2021128008 A1 WO 2021128008A1
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WO
WIPO (PCT)
Prior art keywords
rear cavity
hole
sound
cavity
lower cover
Prior art date
Application number
PCT/CN2019/128003
Other languages
French (fr)
Chinese (zh)
Inventor
高尚
王程良
曾月
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.)
Filing date
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
Priority to PCT/CN2019/128003 priority Critical patent/WO2021128008A1/en
Publication of WO2021128008A1 publication Critical patent/WO2021128008A1/en

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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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • 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
    • 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 an electroacoustic device, in particular to a speaker box.
  • the speaker box of the related art includes a lower cover, an upper cover assembled with the lower cover to form an accommodating space, a sound-producing monomer accommodated in the accommodating space, a blocking wall formed in the accommodating space, and air-permeable isolation
  • the sounding monomer and the upper cover enclose a front cavity, the sounding monomer, the upper cover and the lower cover jointly enclose a rear cavity;
  • the retaining wall separates the rear cavity into each other
  • the first back cavity and the second back cavity are connected, the sound emitting monomer is located in the first back cavity, and the second back cavity is filled with sound-absorbing particles;
  • the blocking wall is provided with a through hole penetrating therethrough, so
  • the air-permeable spacer completely covers the through hole, and the air-permeable spacer encapsulates the sound-absorbing particles in the second rear cavity to form a virtual acoustic cavity so as to improve the low-frequency acoustic performance of the speaker box.
  • the area of the air-permeable spacer for air-permeability depends on the size of the through hole, and because the area of the baffle is smaller than that of the second rear cavity, it contributes to the formation of The number of the sound-absorbing particles in the virtual acoustic cavity is insufficient, which affects the acoustic performance.
  • the second rear cavity has a long and narrow structure extending away from the sound-producing monomer, and the sound-absorbing particles that are easily far away from the air-permeable isolator are difficult to exert, so that the volume of the virtual sound cavity in the second rear cavity is changed. Small, which in turn reduces the low-frequency acoustic performance of the speaker box.
  • the purpose of the utility model is to provide a loudspeaker box with good audio performance, especially low frequency performance.
  • the present invention provides a loudspeaker box, which includes a lower cover, an upper cover covered on the lower cover and enclosing a containing space, a sounding unit contained in the containing space, A barrier wall and a gas-permeable partition formed in the containing space; the sound-producing monomer separates the containing space into a front cavity and a rear cavity, and the barrier wall is located in the rear cavity and separates the rear cavity into The first rear cavity and the second rear cavity, the sound emitting monomer is located in the first rear cavity, and the lower cover includes a lower cover body that covers the upper cover and jointly encloses the receiving space, the A ring-shaped convex wall extending from the lower cover body to the second rear cavity, a through hole penetrating the lower cover body, and recessed in the direction of the upper cover from the side of the lower cover body away from the upper cover A support step is formed and a cover plate fixed to the lower cover body and the support step at the same time, the lower cover body
  • the cover plate includes a cover plate body and a cover plate connection portion bent and extended from the cover plate body in the direction of the upper cover, the cover plate connection portion is ring-shaped and is connected to the lower cover respectively The body and the two supporting steps.
  • the side of the cover connecting portion away from the upper cover is filled with glue, and the glue is respectively glued and fixed with the lower cover body and the two supporting steps.
  • the cover body is flush with the lower cover body.
  • the thickness of the cover plate is smaller than the thickness of the lower cover.
  • the cover plate is made of any one of PET, steel sheet and plastic sheet.
  • the cover plate is a steel sheet with a thickness of 0.15 mm.
  • the blocking wall includes a first blocking wall extending from the convex wall toward the upper cover and a second blocking wall extending from the upper cover toward the convex wall. The blocking wall abuts against the second blocking wall.
  • the air-permeable spacer is fixed to the convex wall by hot melt.
  • the upper cover is provided with a can powder hole penetrating therethrough and a cover provided on the can powder hole, and the can powder hole is in communication with the second rear cavity.
  • the speaker box of the present invention divides the rear cavity into a first rear cavity and a second rear cavity by setting a barrier wall, and the lower cover is provided with a sound conducting groove, a through hole and two supports that penetrate through it and communicate with each other.
  • the through hole communicates with the first rear cavity
  • the sound guide groove communicates with the second rear cavity
  • two supporting steps are arranged at intervals on opposite sides of the through hole along the long axis of the lower cover body; simultaneously fixed to the lower cover body by the cover plate And the supporting step and completely cover the second through hole to form a seal of the rear cavity;
  • the second air-permeable spacer is attached to the convex wall and spaced from the cover plate, and the second air-permeable spacer completely covers the sound guide groove, thereby encapsulating the sound-absorbing particles in A virtual sound cavity is formed in the second back cavity.
  • the second air-permeable spacer, the cover plate, and the second through hole together form an air guiding channel structure connecting the first rear cavity and the second rear cavity, which realizes low-frequency sound generation performance.
  • the sound guide groove extends away from the blocking wall, so that the sound-absorbing particles away from the first air-permeable spacer can also perform better, so that the volume of the virtual sound cavity formed by the second back cavity becomes larger, thereby effectively improving Improve the low-frequency acoustic performance of the speaker box.
  • the supporting steps are arranged at intervals on opposite sides of the through hole, so the air flow in the first rear cavity flows to the second rear cavity to avoid setting the steps for fixing the cover plate, thereby making the air flow more smoothly, thereby Effectively improve the low-frequency acoustic performance of the speaker box.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the speaker box of the present invention.
  • Figure 2 is a schematic diagram of a partial three-dimensional structure of the speaker box of the present invention.
  • Figure 3 is an enlarged view along part B in Figure 1;
  • Figure 4 is a cross-sectional view taken along line A-A in Figure 1;
  • Figure 5 is an enlarged view of part C along Figure 4;
  • Figure 6 is a schematic diagram of the three-dimensional structure of the cover plate of the speaker box of the present invention.
  • Figure 7 is an assembly diagram of the lower cover and the second retaining wall of the speaker box of the present invention.
  • the present invention provides a speaker box 100, which includes a lower cover 1, an upper cover 2, a sound-producing monomer 3, a blocking wall 4, and a breathable spacer 5.
  • the lower cover 1 and the upper cover 2 are assembled together to form a receiving space 7.
  • the upper cover 2 and the lower cover 1 are assembled by ultrasonic welding.
  • the lower cover 1 includes a lower cover body 11 that covers the upper cover 2 and collectively encloses the accommodating space 7, and a ring-shaped convex wall 12 extending from the lower cover body 11 to the accommodating space 7 , Through the through hole 101 of the lower cover body 11, the support step 13 formed by the lower cover body 11 away from the upper cover 2 and recessed in the direction of the upper cover 2 and fixed to the lower cover at the same time The body 11 and the cover plate 14 supporting the step 13.
  • the upper cover 2 is provided with a can powder hole 21 penetrating the upper cover 2 and a cover 22 covering the can powder hole 21.
  • the sound emitting unit 3 is accommodated in the accommodation space 7.
  • the sounding monomer 3 divides the receiving space 7 into a front cavity 71 and a rear cavity 72.
  • the sounding monomer 3 and the upper cover 2 enclose the front cavity 71 for sound; the sounding monomer 3, the lower cover 1 and the upper cover 2 collectively enclose
  • the rear cavity 72 is formed to improve low-frequency acoustic performance.
  • the blocking wall 4 is formed in the receiving space 7.
  • the blocking wall 4 includes a first blocking wall 41 extending from the convex wall 12 in the direction of the upper cover 2 and a second blocking wall 41 extending from the upper cover 2 in the direction of the convex wall 12
  • the wall 42, the first blocking wall 41 abuts against the second blocking wall 42.
  • the blocking wall 4 is located in the rear cavity 72 and divides the rear cavity 72 into a first rear cavity 721 and a second rear cavity 722.
  • the blocking wall 4 connects the upper cover 2 and the lower cover 1.
  • the convex wall 12 is formed by the lower cover body 11 extending toward the second rear cavity.
  • the sound emitting monomer 3 is located in the first rear cavity 721; the second rear cavity 722 is filled with sound-absorbing particles (not shown) to form a virtual sound cavity (ie D-Bass sound cavity) for improving low-frequency acoustics performance.
  • the powder can hole 21 is in communication with the second rear cavity 722, and the sound-absorbing particles are filled into the second back cavity 722 through the powder can hole 21, and then sealed by a cover 22.
  • the lower cover body 11 and the convex wall 12 jointly enclose a sound guide groove 102.
  • the sound guide groove 102 is formed by recessing a side of the lower cover 1 close to the upper cover 2 in a direction away from the upper cover 2.
  • the sound guide groove 102 communicates with the second rear cavity 722.
  • the orthographic projection of the sound guide groove 102 toward the upper cover 2 completely falls into the second rear cavity 722.
  • the through hole 101 penetrates the lower cover 1.
  • the orthographic projection of the through hole 101 toward the upper cover 2 simultaneously falls into the first rear cavity 721, the blocking wall 4, and the second rear cavity 722, and the through hole 101 connects the first The rear cavity 721 communicates with the sound guide groove 102.
  • the supporting step 13 includes two.
  • the two supporting steps 13 are arranged at intervals on opposite sides of the through hole along the long axis of the lower cover body 11.
  • the two supporting steps 13 and the lower cover body 11 jointly enclose the through hole 101.
  • the supporting step 13 is used to support and fix the cover plate 14.
  • the cover plate 14 completely covers the through hole 101.
  • the cover plate 14 is provided on the side of the lower cover 1 away from the upper cover 2.
  • the cover plate 14 includes a cover plate body 141 and a cover plate connection portion 142 bent and extended from the cover plate body 141 in the direction of the upper cover 2.
  • the cover plate connection portion 142 is ring-shaped and respectively Connected to the lower cover body 11 and the two supporting steps 13.
  • the speaker box 100 further includes glue 7.
  • the side of the cover connecting portion 142 away from the upper cover 2 is filled with the glue 7, and the glue 7 is glued and fixed with the lower cover body 11 and the two supporting steps 13 respectively.
  • This structure does not affect the air flow on the side of the cover plate 14 close to the upper cover 2 by applying glue at the cover plate connection part 142, and ensures the maximum volume of the internal cavity, which is beneficial to improve the speaker box 100. Low-frequency acoustic performance.
  • the cover body 141 is flush with the lower cover body 11. This structure makes the speaker box 100 easier to assemble.
  • the sound guide groove 102 is integrally formed through a mold inclined top molding process, which saves assembly procedures and improves production efficiency.
  • the cover plate 14 is made of any one of PET, steel sheet and plastic sheet.
  • the cover plate 14 is made of PET material.
  • the cover plate 14 may also be a steel sheet with a thickness of 0.15 mm.
  • the thickness of the cover plate 14 is smaller than the thickness of the lower cover 1.
  • the material and size of the cover plate 14 are not limited to this, as long as the Young's modulus of the cover plate 14 is greater than that of the lower cover 1, so that the thickness can be reduced relative to the cover plate while ensuring the strength.
  • the air-permeable spacer 5 encapsulates the sound-absorbing particles (not shown) in the second rear cavity 722 to form a virtual acoustic cavity.
  • the blocking wall 4 is provided with a first through hole 40 passing through it.
  • the air-permeable spacer 5 is attached to the side of the lower cover 1 close to the upper cover 2.
  • the air-permeable spacer 5 is fixed to the lower cover 1 by hot melt.
  • the air-permeable spacer 5 is fixed to the convex wall 12 by hot melt.
  • the air-permeable spacer 5 completely covers the sound guide groove 102.
  • the air-permeable spacer 5 encapsulates the sound-absorbing particles in the second rear cavity 722.
  • the sound guide groove 102 and the through hole 101 are arranged by using the thickness space of the lower cover 1, and the air-permeable spacer 5 and the cover plate 14 are respectively covered on both sides of the lower cover 1 to form a gap.
  • the air-permeable spacer 5, the cover plate 14, the sound guide groove 102 and the through hole 101 collectively enclose the connection between the first rear cavity 721 and the second rear cavity 722
  • the airflow in the first rear cavity 721 bypasses the blocking wall 4, sequentially passes through the through hole 101 and the sound guide groove 102, and enters the second rear cavity through the second air-permeable spacer 5 722.
  • the supporting steps 13 are arranged on opposite sides of the through hole 101 at intervals.
  • the two supporting steps 13 are respectively located on opposite sides of the through hole 101 parallel to the air flow direction. Therefore, the air flow in the first rear cavity 721 flows in the direction of the second rear cavity 722 to avoid setting a step for fixing the cover plate 14 so as to make the air flow more smoothly.
  • the sound guide groove 102 extends in a direction away from the blocking wall 4.
  • the air guiding channel is structured to extend along the length of the second back cavity 722, the sound-absorbing particles in the second back cavity 722 far away from the first back cavity 721 can also fully interact with the air guiding particles.
  • the air circulation of the channel fully exerts its function of improving the low-frequency acoustic performance, so that the volume of the virtual sound cavity formed by the second rear cavity becomes larger, so that the low-frequency acoustic performance of the speaker box 100 is better.
  • the speaker box of the present invention divides the rear cavity into a first rear cavity and a second rear cavity by setting a barrier wall, and the lower cover is provided with a sound conducting groove, a through hole and two supports that penetrate through it and communicate with each other.
  • the through hole communicates with the first rear cavity
  • the sound guide groove communicates with the second rear cavity
  • two supporting steps are arranged at intervals on opposite sides of the through hole along the long axis of the lower cover body; simultaneously fixed to the lower cover body by the cover plate And the supporting step and completely cover the second through hole to form a seal of the rear cavity;
  • the second air-permeable spacer is attached to the convex wall and spaced from the cover plate, and the second air-permeable spacer completely covers the sound guide groove, thereby encapsulating the sound-absorbing particles in A virtual sound cavity is formed in the second back cavity.
  • the second air-permeable spacer, the cover plate, and the second through hole together form an air guiding channel structure connecting the first rear cavity and the second rear cavity, which realizes low-frequency sound generation performance.
  • the sound guide groove extends away from the blocking wall, so that the sound-absorbing particles away from the first air-permeable spacer can also perform better, so that the volume of the virtual sound cavity formed by the second back cavity becomes larger, thereby effectively improving Improve the low-frequency acoustic performance of the speaker box.
  • the supporting steps are arranged at intervals on opposite sides of the through hole, so the air flow in the first rear cavity flows to the second rear cavity to avoid setting the steps for fixing the cover plate, thereby making the air flow more smoothly, thereby Effectively improve the low-frequency acoustic performance of the speaker box.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

Provided by the present utility model is a loudspeaker box. A sound generating unit separates an accommodating space into a front cavity and a rear cavity. A retaining wall separates the rear cavity into a first rear cavity and a second rear cavity. A lower cover comprises a lower cover body, a convex wall, a through hole, supporting steps and a cover plate, wherein the lower cover body and the convex wall jointly enclose a sound guide groove, and the sound guide groove communicates with the second rear cavity; the through hole connects the first rear cavity with the sound guide groove; two supporting steps are arranged at an interval on two opposite sides of the through hole; the cover plate completely covers the through hole; an air-permeable spacer is attached to the convex wall and completely covers the sound guide groove, sound-absorbing particles are filled in the second rear cavity, and the air-permeable spacer encapsulates the sound-absorbing particles in the second rear cavity so as to form a virtual sound cavity; and an air flow in the first rear cavity bypasses the retaining wall, then sequentially passes through the through hole and the sound guide groove and enters the second rear cavity by means of the air-permeable spacer, and the two supporting steps are located on the two opposite sides of the through hole parallel to the flowing direction of the air flow, respectively. Compared to related technology, the loudspeaker box of the present utility model has an excellent low-frequency acoustic performance.

Description

扬声器箱Speaker box 技术领域Technical field
本实用新型涉及一种电声装置，尤其涉及一种扬声器箱。 The utility model relates to an electroacoustic device, in particular to a speaker box.
背景技术Background technique
随着移动互联网时代的到来，智能移动设备的数量不断上升。而在众多移动设备之中，手机无疑是最常见、最便携的移动终端设备。目前，手机的功能极其多样，其中之一便是高品质的音乐功能，因此，用于播放声音的扬声器箱被大量应用到现在的智能移动设备之中。With the advent of the mobile Internet era, the number of smart mobile devices continues to rise. Among many mobile devices, mobile phones are undoubtedly the most common and most portable mobile terminal devices. At present, the functions of mobile phones are extremely diverse, one of which is high-quality music functions. Therefore, speaker boxes for playing sound are widely used in today's smart mobile devices.
相关技术的所述扬声器箱包括下盖、与该下盖组配形成一收容空间的上盖、一收容于该收容空间内的发声单体、形成于所述收容空间内的挡壁以及透气隔离件；所述发声单体与所述上盖围成前腔，所述发声单体、所述上盖及所述下盖共同围成后腔；所述挡壁将所述后腔分隔为相互连通的第一后腔和第二后腔，所述发声单***于所述第一后腔，所述第二后腔内填充吸音颗粒；所述挡壁设有贯穿其上的通孔，所述透气隔离件完全盖设所述通孔，所述透气隔离件将所述吸音颗粒封装于所述第二后腔内以形成虚拟声腔从而改善所述扬声器箱的低频声学性能。The speaker box of the related art includes a lower cover, an upper cover assembled with the lower cover to form an accommodating space, a sound-producing monomer accommodated in the accommodating space, a blocking wall formed in the accommodating space, and air-permeable isolation The sounding monomer and the upper cover enclose a front cavity, the sounding monomer, the upper cover and the lower cover jointly enclose a rear cavity; the retaining wall separates the rear cavity into each other The first back cavity and the second back cavity are connected, the sound emitting monomer is located in the first back cavity, and the second back cavity is filled with sound-absorbing particles; the blocking wall is provided with a through hole penetrating therethrough, so The air-permeable spacer completely covers the through hole, and the air-permeable spacer encapsulates the sound-absorbing particles in the second rear cavity to form a virtual acoustic cavity so as to improve the low-frequency acoustic performance of the speaker box.
技术问题technical problem
然而，相关技术的扬声器箱中，用于透气的所述透气隔离件的面积取决于所述通孔的大小，而因为所述挡板面积相对于所述第二后腔较小，导致参与形成虚拟声腔的所述吸音颗粒数量不足，影响声学性能。另外，所述第二后腔呈向远离所述发声单体方向延伸的狭长结构，容易远离所述透气隔离件的吸音颗粒很难发挥效果，使得第二后腔中的参与虚拟声腔的体积变小，进而导致降低了扬声器箱的低频声学性能。However, in the related art speaker box, the area of the air-permeable spacer for air-permeability depends on the size of the through hole, and because the area of the baffle is smaller than that of the second rear cavity, it contributes to the formation of The number of the sound-absorbing particles in the virtual acoustic cavity is insufficient, which affects the acoustic performance. In addition, the second rear cavity has a long and narrow structure extending away from the sound-producing monomer, and the sound-absorbing particles that are easily far away from the air-permeable isolator are difficult to exert, so that the volume of the virtual sound cavity in the second rear cavity is changed. Small, which in turn reduces the low-frequency acoustic performance of the speaker box.
因此，实有必须提供一种新的扬声器箱解决上述技术问题。Therefore, it is necessary to provide a new speaker box to solve the above technical problems.
技术解决方案Technical solutions
本实用新型的目的在于提供一种音频性能尤其是低频性能好的扬声器箱。 The purpose of the utility model is to provide a loudspeaker box with good audio performance, especially low frequency performance.
为了达到上述目的，本实用新型提供了一种扬声器箱，其包括下盖、盖设于所述下盖并同共围成收容空间的上盖、收容于所述收容空间内的发声单体、形成于所述收容空间内的挡壁以及透气隔离件；所述发声单体将所述收容空间分隔成前腔和后腔，所述挡壁位于所述后腔并将所述后腔分隔为第一后腔和第二后腔，所述发声单***于所述第一后腔，所述下盖包括盖合于所述上盖并共同围成所述收容空间的下盖本体、所述下盖本体向所述第二后腔延伸的呈环状的凸壁、贯穿所述下盖本体的通孔、由所述下盖本体远离所述上盖一侧向所述上盖的方向凹陷形成的支撑台阶以及同时固定于所述下盖本体和所述支撑台阶的盖板，所述下盖本体与所述凸壁共同围成导声槽，所述导声槽与所述第二后腔连通，且所述导声槽向所述上盖方向的正投影完全落入所述第二后腔；所述通孔向所述上盖方向的正投影同时落入所述第一后腔、所述挡壁及所述第二后腔，所述通孔将所述第一后腔与所述导声槽连通；所述支撑台阶包括两个，两个所述支撑台阶间隔设置于所述通孔的相对两侧，两个所述支撑台阶与所述下盖本体共同围成所述通孔；所述盖板完全覆盖所述通孔；所述透气隔离件贴合于所述凸壁，且完全覆盖所述导声槽，所述第二后腔内填充吸音颗粒，所述透气隔离件将所述吸音颗粒封装于所述第二后腔内以形成虚拟声腔；所述第一后腔内的气流绕过所述挡壁后依次通过所述通孔和所述导声槽并透过所述透气隔离件进入所述第二后腔，两个所述支撑台阶分别位于所述通孔平行于气流流动方向的相对两侧。In order to achieve the above objective, the present invention provides a loudspeaker box, which includes a lower cover, an upper cover covered on the lower cover and enclosing a containing space, a sounding unit contained in the containing space, A barrier wall and a gas-permeable partition formed in the containing space; the sound-producing monomer separates the containing space into a front cavity and a rear cavity, and the barrier wall is located in the rear cavity and separates the rear cavity into The first rear cavity and the second rear cavity, the sound emitting monomer is located in the first rear cavity, and the lower cover includes a lower cover body that covers the upper cover and jointly encloses the receiving space, the A ring-shaped convex wall extending from the lower cover body to the second rear cavity, a through hole penetrating the lower cover body, and recessed in the direction of the upper cover from the side of the lower cover body away from the upper cover A support step is formed and a cover plate fixed to the lower cover body and the support step at the same time, the lower cover body and the convex wall jointly enclose a sound guide groove, the sound guide groove and the second rear The cavities are in communication, and the orthographic projection of the sound guide groove toward the upper cover completely falls into the second rear cavity; the orthographic projection of the through hole toward the upper cover falls into the first rear cavity at the same time , The baffle wall and the second back cavity, the through hole connects the first back cavity and the sound guide groove; the support step includes two, and the two support steps are arranged at intervals On opposite sides of the through hole, the two support steps and the lower cover body jointly enclose the through hole; the cover plate completely covers the through hole; the air-permeable spacer is attached to the convex The second back cavity is filled with sound-absorbing particles, and the air-permeable partition encapsulates the sound-absorbing particles in the second back cavity to form a virtual sound cavity; the first The airflow in the rear cavity bypasses the retaining wall and sequentially passes through the through hole and the sound guide groove and enters the second rear cavity through the air-permeable spacer. The two supporting steps are respectively located in the The through holes are parallel to the opposite sides of the air flow direction.
优选的，所述盖板包括盖板本体和由所述盖板本体向所述上盖方向弯折延伸的盖板连接部，所述盖板连接部呈环状且分别连接于所述下盖本体和两个所述支撑台阶。Preferably, the cover plate includes a cover plate body and a cover plate connection portion bent and extended from the cover plate body in the direction of the upper cover, the cover plate connection portion is ring-shaped and is connected to the lower cover respectively The body and the two supporting steps.
优选的，所述盖板连接部远离所述上盖的一侧填充胶水，所述胶水分别与所述下盖本体和两个所述支撑台阶形成胶合固定。Preferably, the side of the cover connecting portion away from the upper cover is filled with glue, and the glue is respectively glued and fixed with the lower cover body and the two supporting steps.
优选的，所述盖板本体与所述下盖本体平齐。Preferably, the cover body is flush with the lower cover body.
优选的，所述盖板的厚度小于所述下盖的厚度。Preferably, the thickness of the cover plate is smaller than the thickness of the lower cover.
优选的，所述盖板为PET、钢片及塑料片中的任意一种材料制成。Preferably, the cover plate is made of any one of PET, steel sheet and plastic sheet.
优选的，所述盖板为钢片，其厚度为0.15mm。Preferably, the cover plate is a steel sheet with a thickness of 0.15 mm.
优选的，所述挡壁包括由所述凸壁向所述上盖的方向延伸的第一挡壁以及由所述上盖向所述凸壁的方向延伸的第二挡壁，所述第一挡壁抵接于所述第二挡壁。Preferably, the blocking wall includes a first blocking wall extending from the convex wall toward the upper cover and a second blocking wall extending from the upper cover toward the convex wall. The blocking wall abuts against the second blocking wall.
优选的，所述透气隔离件通过热熔方式固定于所述凸壁。Preferably, the air-permeable spacer is fixed to the convex wall by hot melt.
优选的，所述上盖设有贯穿其上的罐粉孔和盖设于所述罐粉孔的封盖，所述罐粉孔与所述第二后腔连通。Preferably, the upper cover is provided with a can powder hole penetrating therethrough and a cover provided on the can powder hole, and the can powder hole is in communication with the second rear cavity.
有益效果Beneficial effect
与相关技术相比，本实用新型的扬声器箱通过设置挡壁将后腔分隔为第一后腔和第二后腔，在下盖设置贯穿其上且相互连通导声槽、通孔以及两个支撑台阶，通孔与第一后腔连通，导声槽与第二后腔连通，两个支撑台阶间隔设置于通孔沿下盖本体长轴的相对两侧；通过盖板同时固定于下盖本体和支撑台阶并完全覆盖第二通孔，形成后腔的密封；第二透气隔离件贴合于凸壁并与盖板间隔，第二透气隔离件完全覆盖导声槽，从而将吸音颗粒封装于第二后腔内以形成虚拟声腔。上述结构中，第二透气隔离件、盖板以及第二通孔共围形成了连通第一后腔与第二后腔的导气通道结构，实现了低频发声性能。其中，导声槽向远离所述挡壁的方向延伸，使得远离第一透气隔离件的吸音颗粒也能更好发挥作用，从而使第二后腔形成的虚拟声腔的体积变大，从而有效改善了扬声器箱的低频声学性能。另外，支撑台阶间隔设置于通孔的相对两侧，因此在第一后腔内的气流向第二后腔流动的方向避免设置用于固定盖板的台阶，从而使该气流流动更加流畅，从而有效改善了扬声器箱的低频声学性能。Compared with the related art, the speaker box of the present invention divides the rear cavity into a first rear cavity and a second rear cavity by setting a barrier wall, and the lower cover is provided with a sound conducting groove, a through hole and two supports that penetrate through it and communicate with each other. Steps, the through hole communicates with the first rear cavity, the sound guide groove communicates with the second rear cavity, and two supporting steps are arranged at intervals on opposite sides of the through hole along the long axis of the lower cover body; simultaneously fixed to the lower cover body by the cover plate And the supporting step and completely cover the second through hole to form a seal of the rear cavity; the second air-permeable spacer is attached to the convex wall and spaced from the cover plate, and the second air-permeable spacer completely covers the sound guide groove, thereby encapsulating the sound-absorbing particles in A virtual sound cavity is formed in the second back cavity. In the above structure, the second air-permeable spacer, the cover plate, and the second through hole together form an air guiding channel structure connecting the first rear cavity and the second rear cavity, which realizes low-frequency sound generation performance. Wherein, the sound guide groove extends away from the blocking wall, so that the sound-absorbing particles away from the first air-permeable spacer can also perform better, so that the volume of the virtual sound cavity formed by the second back cavity becomes larger, thereby effectively improving Improve the low-frequency acoustic performance of the speaker box. In addition, the supporting steps are arranged at intervals on opposite sides of the through hole, so the air flow in the first rear cavity flows to the second rear cavity to avoid setting the steps for fixing the cover plate, thereby making the air flow more smoothly, thereby Effectively improve the low-frequency acoustic performance of the speaker box.
附图说明Description of the drawings
图1为本实用新型扬声器箱的立体结构示意图；Figure 1 is a schematic diagram of the three-dimensional structure of the speaker box of the present invention;
图2本实用新型扬声器箱的部分立体结构示意图；Figure 2 is a schematic diagram of a partial three-dimensional structure of the speaker box of the present invention;
图3为沿图1中B部分放大图；Figure 3 is an enlarged view along part B in Figure 1;
图4为沿图1中A-A线的剖示图；Figure 4 is a cross-sectional view taken along line A-A in Figure 1;
图5为沿图4中C部分放大图；Figure 5 is an enlarged view of part C along Figure 4;
图6为本实用新型扬声器箱的盖板的立体结构示意图；Figure 6 is a schematic diagram of the three-dimensional structure of the cover plate of the speaker box of the present invention;
图7为本实用新型扬声器箱的下盖与第二挡壁的装配图。Figure 7 is an assembly diagram of the lower cover and the second retaining wall of the speaker box of the present invention.
本发明的实施方式Embodiments of the present invention
下面将结合附图和实施方式对本实用新型作进一步说明。The utility model will be further described below in conjunction with the drawings and the embodiments.
请同时参阅图1-6，本实用新型提供了一种扬声器箱100，包括下盖1、上盖2、发声单体3、挡壁4以及透气隔离件5。Please refer to FIGS. 1-6 at the same time. The present invention provides a speaker box 100, which includes a lower cover 1, an upper cover 2, a sound-producing monomer 3, a blocking wall 4, and a breathable spacer 5.
所述下盖1与所述上盖2共同组配形成收容空间7。本实施方式中，所述上盖2与所述下盖1通过超声波焊接形成组配。The lower cover 1 and the upper cover 2 are assembled together to form a receiving space 7. In this embodiment, the upper cover 2 and the lower cover 1 are assembled by ultrasonic welding.
所述下盖1包括盖合于所述上盖2并共同围成所述收容空间7的下盖本体11、所述下盖本体11向所述收容空间7延伸的呈环状的凸壁12、贯穿所述下盖本体11的通孔101、由所述下盖本体11远离所述上盖2一侧向所述上盖2的方向凹陷形成的支撑台阶13以及同时固定于所述下盖本体11和所述支撑台阶13的盖板14。The lower cover 1 includes a lower cover body 11 that covers the upper cover 2 and collectively encloses the accommodating space 7, and a ring-shaped convex wall 12 extending from the lower cover body 11 to the accommodating space 7 , Through the through hole 101 of the lower cover body 11, the support step 13 formed by the lower cover body 11 away from the upper cover 2 and recessed in the direction of the upper cover 2 and fixed to the lower cover at the same time The body 11 and the cover plate 14 supporting the step 13.
所述上盖2设有贯穿其上的罐粉孔21和盖设于所述罐粉孔21的封盖22。The upper cover 2 is provided with a can powder hole 21 penetrating the upper cover 2 and a cover 22 covering the can powder hole 21.
所述发声单体3收容于所述收容空间7内。所述发声单体3将所述收容空间7分隔成前腔71和后腔72。在本实施方式中，所述发声单体3和所述上盖2围成所述前腔71，用于发声；所述发声单体3、所述下盖1和所述上盖2共同围成所述后腔72，用于改善低频声学性能。The sound emitting unit 3 is accommodated in the accommodation space 7. The sounding monomer 3 divides the receiving space 7 into a front cavity 71 and a rear cavity 72. In this embodiment, the sounding monomer 3 and the upper cover 2 enclose the front cavity 71 for sound; the sounding monomer 3, the lower cover 1 and the upper cover 2 collectively enclose The rear cavity 72 is formed to improve low-frequency acoustic performance.
所述挡壁4形成于所述收容空间7内。具体的，所述挡壁4包括由所述凸壁12向所述上盖2的方向延伸的第一挡壁41以及由所述上盖2向所述凸壁12的方向延伸的第二挡壁42，所述第一挡壁41抵接于所述第二挡壁42。所述挡壁4位于所述后腔72并将所述后腔72分隔为第一后腔721和第二后腔722。在本实施方式中，所述挡壁4连接所述上盖2与所述下盖1。所述凸壁12为所述下盖本体11向所述第二后腔延伸形成。所述发声单体3位于所述第一后腔721内；所述第二后腔722内填充吸音颗粒（图未示），以形成虚拟声腔（即D-Bass声腔），用于改善低频声学性能。The blocking wall 4 is formed in the receiving space 7. Specifically, the blocking wall 4 includes a first blocking wall 41 extending from the convex wall 12 in the direction of the upper cover 2 and a second blocking wall 41 extending from the upper cover 2 in the direction of the convex wall 12 The wall 42, the first blocking wall 41 abuts against the second blocking wall 42. The blocking wall 4 is located in the rear cavity 72 and divides the rear cavity 72 into a first rear cavity 721 and a second rear cavity 722. In this embodiment, the blocking wall 4 connects the upper cover 2 and the lower cover 1. The convex wall 12 is formed by the lower cover body 11 extending toward the second rear cavity. The sound emitting monomer 3 is located in the first rear cavity 721; the second rear cavity 722 is filled with sound-absorbing particles (not shown) to form a virtual sound cavity (ie D-Bass sound cavity) for improving low-frequency acoustics performance.
具体的，所述罐粉孔21与所述第二后腔722连通，吸音颗粒即由该罐粉孔21罐入第二后腔722内，再通过封盖22盖设封装。Specifically, the powder can hole 21 is in communication with the second rear cavity 722, and the sound-absorbing particles are filled into the second back cavity 722 through the powder can hole 21, and then sealed by a cover 22.
所述下盖本体11与所述凸壁12共同围成导声槽102。本实施方式中，所述导声槽102由所述下盖1靠近所述上盖2的一侧向远离所述上盖2方向凹陷形成。所述导声槽102与所述第二后腔722连通。所述导声槽102向所述上盖2方向的正投影完全落入所述第二后腔722。The lower cover body 11 and the convex wall 12 jointly enclose a sound guide groove 102. In this embodiment, the sound guide groove 102 is formed by recessing a side of the lower cover 1 close to the upper cover 2 in a direction away from the upper cover 2. The sound guide groove 102 communicates with the second rear cavity 722. The orthographic projection of the sound guide groove 102 toward the upper cover 2 completely falls into the second rear cavity 722.
所述通孔101贯穿所述下盖1。所述通孔101向所述上盖2方向的正投影同时落入所述第一后腔721、所述挡壁4及所述第二后腔722，所述通孔101将所述第一后腔721与所述导声槽102连通。The through hole 101 penetrates the lower cover 1. The orthographic projection of the through hole 101 toward the upper cover 2 simultaneously falls into the first rear cavity 721, the blocking wall 4, and the second rear cavity 722, and the through hole 101 connects the first The rear cavity 721 communicates with the sound guide groove 102.
所述支撑台阶13包括两个。两个所述支撑台阶13间隔设置于所述通孔沿所述下盖本体11长轴的相对两侧。两个所述支撑台阶13与所述下盖本体11共同围成所述通孔101。所述支撑台阶13用于支撑固定所述盖板14。The supporting step 13 includes two. The two supporting steps 13 are arranged at intervals on opposite sides of the through hole along the long axis of the lower cover body 11. The two supporting steps 13 and the lower cover body 11 jointly enclose the through hole 101. The supporting step 13 is used to support and fix the cover plate 14.
所述盖板14完全覆盖所述通孔101。在本实施方式中，所述盖板14盖设于所述下盖1远离所述上盖2的一侧。具体的，所述盖板14包括盖板本体141和由所述盖板本体141向所述上盖2方向弯折延伸的盖板连接部142，所述盖板连接部142呈环状且分别连接于所述下盖本体11和两个所述支撑台阶13。本实施方式中，所述扬声器箱100还包括胶水7。所述盖板连接部142远离所述上盖2的一侧填充所述胶水7，所述胶水7分别与所述下盖本体11和两个所述支撑台阶13形成胶合固定。该结构通过在所述盖板连接部142处打胶，不影响到所述盖板14靠近所述上盖2一侧的气流流动，保证内部腔体体积最大化，有利于改善扬声器箱100的低频声学性能。The cover plate 14 completely covers the through hole 101. In this embodiment, the cover plate 14 is provided on the side of the lower cover 1 away from the upper cover 2. Specifically, the cover plate 14 includes a cover plate body 141 and a cover plate connection portion 142 bent and extended from the cover plate body 141 in the direction of the upper cover 2. The cover plate connection portion 142 is ring-shaped and respectively Connected to the lower cover body 11 and the two supporting steps 13. In this embodiment, the speaker box 100 further includes glue 7. The side of the cover connecting portion 142 away from the upper cover 2 is filled with the glue 7, and the glue 7 is glued and fixed with the lower cover body 11 and the two supporting steps 13 respectively. This structure does not affect the air flow on the side of the cover plate 14 close to the upper cover 2 by applying glue at the cover plate connection part 142, and ensures the maximum volume of the internal cavity, which is beneficial to improve the speaker box 100. Low-frequency acoustic performance.
更优的，所述盖板本体141与所述下盖本体11平齐。该结构使所述扬声器箱100更易于装配。More preferably, the cover body 141 is flush with the lower cover body 11. This structure makes the speaker box 100 easier to assemble.
本实施方式中，所述导声槽102为通过模具斜顶成型工艺一体成型，节省了组装工序，提高生产效率。In this embodiment, the sound guide groove 102 is integrally formed through a mold inclined top molding process, which saves assembly procedures and improves production efficiency.
所述盖板14为PET、钢片及塑料片中的任意一种材料制成。本实施方式中，所述盖板14为PET材料制成。当然，不限于此，所述盖板14还可以厚度为0.15mm的钢片。所述盖板14的厚度小于所述下盖1的厚度。当然，盖板14的材料与尺寸不限于此，其扬氏模量大于下盖1即可，从而可在保证强度的同时相对于盖板减小其厚度。The cover plate 14 is made of any one of PET, steel sheet and plastic sheet. In this embodiment, the cover plate 14 is made of PET material. Of course, it is not limited to this, and the cover plate 14 may also be a steel sheet with a thickness of 0.15 mm. The thickness of the cover plate 14 is smaller than the thickness of the lower cover 1. Of course, the material and size of the cover plate 14 are not limited to this, as long as the Young's modulus of the cover plate 14 is greater than that of the lower cover 1, so that the thickness can be reduced relative to the cover plate while ensuring the strength.
本实施方式中，所述透气隔离件5将所述吸音颗粒（未图示）封装于所述第二后腔722内以形成虚拟声腔。In this embodiment, the air-permeable spacer 5 encapsulates the sound-absorbing particles (not shown) in the second rear cavity 722 to form a virtual acoustic cavity.
所述挡壁4设有贯穿其上的第一通孔40。The blocking wall 4 is provided with a first through hole 40 passing through it.
所述透气隔离件5贴合于所述下盖1靠近所述上盖2的一侧。所述透气隔离件5通过热熔方式固定于所述下盖1。在本实施方式中，所述透气隔离件5通过热熔方式固定于所述凸壁12。所述透气隔离件5完全覆盖所述导声槽102。所述透气隔离件5将所述吸音颗粒封装于所述第二后腔722内。The air-permeable spacer 5 is attached to the side of the lower cover 1 close to the upper cover 2. The air-permeable spacer 5 is fixed to the lower cover 1 by hot melt. In this embodiment, the air-permeable spacer 5 is fixed to the convex wall 12 by hot melt. The air-permeable spacer 5 completely covers the sound guide groove 102. The air-permeable spacer 5 encapsulates the sound-absorbing particles in the second rear cavity 722.
也就是说，上述结构中，利用下盖1的厚度空间设置所述导声槽102和所述通孔101，所述透气隔离件5与盖板14分别盖设于下盖1两侧形成间隔设置，从而使得所述透气隔离件5、所述盖板14、所述导声槽102以及所述通孔101共同围成了连通所述第一后腔721与所述第二后腔722的导气通道结构，所述第一后腔721的气流经该导气通道结构进入所述第二后腔722，实现低频声学效果。That is to say, in the above structure, the sound guide groove 102 and the through hole 101 are arranged by using the thickness space of the lower cover 1, and the air-permeable spacer 5 and the cover plate 14 are respectively covered on both sides of the lower cover 1 to form a gap. Is arranged so that the air-permeable spacer 5, the cover plate 14, the sound guide groove 102 and the through hole 101 collectively enclose the connection between the first rear cavity 721 and the second rear cavity 722 The air guiding channel structure, the airflow of the first rear cavity 721 enters the second rear cavity 722 through the air guiding channel structure, to achieve a low-frequency acoustic effect.
所述第一后腔721内的气流绕过所述挡壁4后依次通过所述通孔101和所述导声槽102并透过所述第二透气隔离件5进入所述第二后腔722。如图4和图5中箭头所示。其中，更优的，所述支撑台阶13间隔设置于所述通孔101的相对两侧。具体的，两个所述支撑台阶13分别位于所述通孔101平行于气流流动方向的相对两侧。因此在所述第一后腔721内的气流向所述第二后腔722流动的方向避免设置用于固定所述盖板14的台阶，从而使该气流流动更加流畅。另外所述导声槽102向远离所述挡壁4的方向延伸。也就是说，因导气通道结构为沿所述第二后腔722的长度方向延伸，使得所述第二后腔722内远离所述第一后腔721位置的吸音颗粒也可充分与导气通道空气流通，即充分发挥其改善低频声学性能的作用，从而使第二后腔形成的虚拟声腔的体积变大，从而使得扬声器箱100的低频声学性能更优。The airflow in the first rear cavity 721 bypasses the blocking wall 4, sequentially passes through the through hole 101 and the sound guide groove 102, and enters the second rear cavity through the second air-permeable spacer 5 722. As shown by the arrows in Figure 4 and Figure 5. Preferably, the supporting steps 13 are arranged on opposite sides of the through hole 101 at intervals. Specifically, the two supporting steps 13 are respectively located on opposite sides of the through hole 101 parallel to the air flow direction. Therefore, the air flow in the first rear cavity 721 flows in the direction of the second rear cavity 722 to avoid setting a step for fixing the cover plate 14 so as to make the air flow more smoothly. In addition, the sound guide groove 102 extends in a direction away from the blocking wall 4. That is to say, because the air guiding channel is structured to extend along the length of the second back cavity 722, the sound-absorbing particles in the second back cavity 722 far away from the first back cavity 721 can also fully interact with the air guiding particles. The air circulation of the channel fully exerts its function of improving the low-frequency acoustic performance, so that the volume of the virtual sound cavity formed by the second rear cavity becomes larger, so that the low-frequency acoustic performance of the speaker box 100 is better.
与相关技术相比，本实用新型的扬声器箱通过设置挡壁将后腔分隔为第一后腔和第二后腔，在下盖设置贯穿其上且相互连通导声槽、通孔以及两个支撑台阶，通孔与第一后腔连通，导声槽与第二后腔连通，两个支撑台阶间隔设置于通孔沿下盖本体长轴的相对两侧；通过盖板同时固定于下盖本体和支撑台阶并完全覆盖第二通孔，形成后腔的密封；第二透气隔离件贴合于凸壁并与盖板间隔，第二透气隔离件完全覆盖导声槽，从而将吸音颗粒封装于第二后腔内以形成虚拟声腔。上述结构中，第二透气隔离件、盖板以及第二通孔共围形成了连通第一后腔与第二后腔的导气通道结构，实现了低频发声性能。其中，导声槽向远离所述挡壁的方向延伸，使得远离第一透气隔离件的吸音颗粒也能更好发挥作用，从而使第二后腔形成的虚拟声腔的体积变大，从而有效改善了扬声器箱的低频声学性能。另外，支撑台阶间隔设置于通孔的相对两侧，因此在第一后腔内的气流向第二后腔流动的方向避免设置用于固定盖板的台阶，从而使该气流流动更加流畅，从而有效改善了扬声器箱的低频声学性能。Compared with the related art, the speaker box of the present invention divides the rear cavity into a first rear cavity and a second rear cavity by setting a barrier wall, and the lower cover is provided with a sound conducting groove, a through hole and two supports that penetrate through it and communicate with each other. Steps, the through hole communicates with the first rear cavity, the sound guide groove communicates with the second rear cavity, and two supporting steps are arranged at intervals on opposite sides of the through hole along the long axis of the lower cover body; simultaneously fixed to the lower cover body by the cover plate And the supporting step and completely cover the second through hole to form a seal of the rear cavity; the second air-permeable spacer is attached to the convex wall and spaced from the cover plate, and the second air-permeable spacer completely covers the sound guide groove, thereby encapsulating the sound-absorbing particles in A virtual sound cavity is formed in the second back cavity. In the above structure, the second air-permeable spacer, the cover plate, and the second through hole together form an air guiding channel structure connecting the first rear cavity and the second rear cavity, which realizes low-frequency sound generation performance. Wherein, the sound guide groove extends away from the blocking wall, so that the sound-absorbing particles away from the first air-permeable spacer can also perform better, so that the volume of the virtual sound cavity formed by the second back cavity becomes larger, thereby effectively improving Improve the low-frequency acoustic performance of the speaker box. In addition, the supporting steps are arranged at intervals on opposite sides of the through hole, so the air flow in the first rear cavity flows to the second rear cavity to avoid setting the steps for fixing the cover plate, thereby making the air flow more smoothly, thereby Effectively improve the low-frequency acoustic performance of the speaker box.
以上所述仅为本实用新型的实施例，并非因此限制本实用新型的专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本实用新型的专利保护范围内。The above are only the embodiments of the utility model, and do not limit the patent scope of the utility model. Any equivalent structure or equivalent process transformation made by using the description and drawings of the utility model, or directly or indirectly applied to other Related technical fields are included in the scope of patent protection of the utility model in the same way.

Claims (10)

  1. 一种扬声器箱，其包括下盖、盖设于所述下盖并同共围成收容空间的上盖、收容于所述收容空间内的发声单体、形成于所述收容空间内的挡壁以及透气隔离件；所述发声单体将所述收容空间分隔成前腔和后腔，所述挡壁位于所述后腔并将所述后腔分隔为第一后腔和第二后腔，所述发声单***于所述第一后腔，其特征在于：A loudspeaker box comprising a lower cover, an upper cover arranged on the lower cover and enclosing a containing space, a sounding unit contained in the containing space, and a retaining wall formed in the containing space And a gas-permeable spacer; the sound-producing monomer separates the receiving space into a front cavity and a rear cavity, and the blocking wall is located in the rear cavity and separates the rear cavity into a first rear cavity and a second rear cavity, The vocal monomer is located in the first rear cavity, and is characterized in that:
    所述下盖包括盖合于所述上盖并共同围成所述收容空间的下盖本体、所述下盖本体向所述第二后腔延伸的呈环状的凸壁、贯穿所述下盖本体的通孔、由所述下盖本体远离所述上盖一侧向所述上盖的方向凹陷形成的支撑台阶以及同时固定于所述下盖本体和所述支撑台阶的盖板，The lower cover includes a lower cover body covering the upper cover and jointly enclosing the accommodating space, a ring-shaped convex wall extending from the lower cover body to the second rear cavity, and penetrating the lower cover body. A through hole of the cover body, a support step formed by the side of the lower cover body away from the upper cover and recessed in the direction of the upper cover, and a cover plate fixed to the lower cover body and the support step at the same time,
    所述下盖本体与所述凸壁共同围成导声槽，所述导声槽与所述第二后腔连通，且所述导声槽向所述上盖方向的正投影完全落入所述第二后腔；The lower cover body and the convex wall jointly enclose a sound guide groove, the sound guide groove communicates with the second rear cavity, and the orthographic projection of the sound guide groove toward the upper cover completely falls into the sound guide groove. Said the second back cavity;
    所述通孔向所述上盖方向的正投影同时落入所述第一后腔、所述挡壁及所述第二后腔，所述通孔将所述第一后腔与所述导声槽连通；The orthographic projection of the through hole toward the upper cover simultaneously falls into the first rear cavity, the blocking wall, and the second rear cavity, and the through hole connects the first rear cavity and the guide Sound groove is connected;
    所述支撑台阶包括两个，两个所述支撑台阶间隔设置于所述通孔的相对两侧，两个所述支撑台阶与所述下盖本体共同围成所述通孔；The supporting steps include two, the two supporting steps are arranged on opposite sides of the through hole at intervals, and the two supporting steps and the lower cover body jointly enclose the through hole;
    所述盖板完全覆盖所述通孔；The cover plate completely covers the through hole;
    所述透气隔离件贴合于所述凸壁，且完全覆盖所述导声槽，所述第二后腔内填充吸音颗粒，所述透气隔离件将所述吸音颗粒封装于所述第二后腔内以形成虚拟声腔；The air-permeable spacer is attached to the convex wall and completely covers the sound guide groove, the second rear cavity is filled with sound-absorbing particles, and the air-permeable spacer encapsulates the sound-absorbing particles in the second rear cavity. In the cavity to form a virtual sound cavity;
    所述第一后腔内的气流绕过所述挡壁后依次通过所述通孔和所述导声槽并透过所述透气隔离件进入所述第二后腔，两个所述支撑台阶分别位于所述通孔平行于气流流动方向的相对两侧。The airflow in the first rear cavity bypasses the blocking wall and sequentially passes through the through hole and the sound guide groove and enters the second rear cavity through the air-permeable partition. The two supporting steps They are respectively located on opposite sides of the through hole parallel to the flow direction of the airflow.
  2. 根据权利要求1所述的扬声器箱，其特征在于，所述盖板包括盖板本体和由所述盖板本体向所述上盖方向弯折延伸的盖板连接部，所述盖板连接部呈环状且分别连接于所述下盖本体和两个所述支撑台阶。The speaker box according to claim 1, wherein the cover plate comprises a cover plate body and a cover plate connection portion bent and extended from the cover plate body toward the upper cover, the cover plate connection portion It has a ring shape and is respectively connected to the lower cover body and the two supporting steps.
  3. 根据权利要求2所述的扬声器箱，其特征在于，所述盖板连接部远离所述上盖的一侧填充胶水，所述胶水分别与所述下盖本体和两个所述支撑台阶形成胶合固定。The speaker box according to claim 2, wherein the side of the cover connecting portion away from the upper cover is filled with glue, and the glue is glued to the lower cover body and the two supporting steps respectively. fixed.
  4. 根据权利要求2所述的扬声器箱，其特征在于，所述盖板本体与所述下盖本体平齐。The speaker box according to claim 2, wherein the cover body is flush with the lower cover body.
  5. 根据权利要求1所述的扬声器箱，其特征在于，所述盖板的厚度小于所述下盖的厚度。The speaker box according to claim 1, wherein the thickness of the cover plate is smaller than the thickness of the lower cover.
  6. 根据权利要求1所述的扬声器箱，其特征在于，所述盖板为PET、钢片及塑料片中的任意一种材料制成。The speaker box according to claim 1, wherein the cover plate is made of any one of PET, steel sheet and plastic sheet.
  7. 根据权利要求6所述的扬声器箱，其特征在于，所述盖板为钢片，其厚度为0.15mm。The speaker box according to claim 6, wherein the cover plate is a steel sheet with a thickness of 0.15 mm.
  8. 根据权利要求1所述的扬声器箱，其特征在于，所述挡壁包括由所述凸壁向所述上盖的方向延伸的第一挡壁以及由所述上盖向所述凸壁的方向延伸的第二挡壁，所述第一挡壁抵接于所述第二挡壁。The speaker box according to claim 1, wherein the blocking wall includes a first blocking wall extending from the convex wall to the upper cover and a direction from the upper cover to the convex wall. An extended second retaining wall, the first retaining wall abuts against the second retaining wall.
  9. 根据权利要求1所述的扬声器箱，其特征在于，所述透气隔离件通过热熔方式固定于所述凸壁。The speaker box according to claim 1, wherein the air-permeable partition is fixed to the convex wall by hot melt.
  10. 根据权利要求1所述的扬声器箱，其特征在于，所述上盖设有贯穿其上的罐粉孔和盖设于所述罐粉孔的封盖，所述罐粉孔与所述第二后腔连通。The loudspeaker box according to claim 1, wherein the upper cover is provided with a can powder hole penetrating therethrough and a cover provided on the can powder hole, the can powder hole and the second The back cavity is connected.
PCT/CN2019/128003 2019-12-24 2019-12-24 Loudspeaker box WO2021128008A1 (en)

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CN104994461A (en) * 2015-07-03 2015-10-21 歌尔声学股份有限公司 Sound-absorbing material, sound-absorbing particles, loudspeaker module production process and particles and module
CN206433106U (en) * 2017-01-12 2017-08-22 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN108124225A (en) * 2018-02-26 2018-06-05 歌尔股份有限公司 A kind of loud speaker module and electronic equipment
CN108235195A (en) * 2018-01-05 2018-06-29 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN108307279A (en) * 2018-01-29 2018-07-20 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN109218897A (en) * 2018-08-09 2019-01-15 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
US20190349669A1 (en) * 2018-05-09 2019-11-14 AAC Technologies Pte. Ltd. Speaker box

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104994461A (en) * 2015-07-03 2015-10-21 歌尔声学股份有限公司 Sound-absorbing material, sound-absorbing particles, loudspeaker module production process and particles and module
CN206433106U (en) * 2017-01-12 2017-08-22 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN108235195A (en) * 2018-01-05 2018-06-29 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN108307279A (en) * 2018-01-29 2018-07-20 瑞声科技(新加坡)有限公司 Loudspeaker enclosure
CN108124225A (en) * 2018-02-26 2018-06-05 歌尔股份有限公司 A kind of loud speaker module and electronic equipment
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