WO2023193301A1 - 一种扬声器箱 - Google Patents

一种扬声器箱 Download PDF

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Publication number
WO2023193301A1
WO2023193301A1 PCT/CN2022/087913 CN2022087913W WO2023193301A1 WO 2023193301 A1 WO2023193301 A1 WO 2023193301A1 CN 2022087913 W CN2022087913 W CN 2022087913W WO 2023193301 A1 WO2023193301 A1 WO 2023193301A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
heat exchange
groove
cavity
speaker box
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2022/087913
Other languages
English (en)
French (fr)
Inventor
吴树文
葛振凡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AAC Technologies Holdings Shenzhen Co Ltd
AAC Microtech Changzhou Co Ltd
Original Assignee
AAC Acoustic Technologies Shenzhen Co Ltd
AAC Microtech Changzhou Co Ltd
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 AAC Acoustic Technologies Shenzhen Co Ltd, AAC Microtech Changzhou Co Ltd filed Critical AAC Acoustic Technologies Shenzhen Co Ltd
Priority to US17/921,976 priority Critical patent/US20250203817A1/en
Publication of WO2023193301A1 publication Critical patent/WO2023193301A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/022—Cooling arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
    • H05K7/20263—Heat dissipaters releasing heat from coolant
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Definitions

  • the present invention relates to the technical field of electroacoustic conversion, in particular to a speaker box.
  • Speaker boxes are widely used in portable mobile electronic products, such as mobile phones, to convert audio signals into sound for playback.
  • the speaker boxes are loud and have good low-frequency sound effects.
  • the speaker box in the prior art includes a front cover, a back cover that covers the front cover and collectively forms a receiving space, and a sound-generating unit contained in the receiving space.
  • the sound-generating unit divides the receiving space into front and rear covers. Vocal cavity and posterior vocal cavity.
  • the speaker box of the prior art has poor heat dissipation, thereby limiting the acoustic performance.
  • the present invention provides a speaker box to solve the technical problems in the prior art, which can make the speaker box have good heat dissipation.
  • the present invention provides a speaker box 10, including:
  • a sound unit is fixed in the receiving cavity, and the sound unit divides the receiving cavity into a sealed rear sound cavity and a front sound cavity connected to the outside of the housing;
  • the sound-generating unit is also provided with a heat exchange piece.
  • a heat exchange cavity is formed in the heat exchange piece.
  • the heat exchange cavity is filled with a heat exchange medium, and part of the heat exchange piece is exposed to the sound-generating unit.
  • the sound-emitting unit includes a sound-emitting unit and a support body that supports the sound-emitting unit on the heat exchange member, and the heat exchange member is embedded in The support body is disposed in the circumferential direction of the sound-emitting unit, and part of the heat exchange member is exposed on the support body.
  • the heat exchange member is made of metal.
  • the heat exchange member and the support body are integrally injection molded.
  • a speaker box as described above wherein preferably, the first end of the support body is received in the receiving cavity, and the housing is provided with a first groove connected to the receiving cavity, so The second end of the support body extends to the outside of the housing through the first groove.
  • the support body is provided with a second groove and a third groove. The second groove penetrates the first end of the support body. end, one end of the third groove forms an opening on the second end of the support body, and the other end of the third groove extends to communicate with the second groove;
  • the sound-emitting unit is supported on the second groove.
  • the sound-emitting unit, the receiving cavity, the second groove and the third groove together form the front sound cavity.
  • the sound-emitting unit, The support body and the receiving cavity together form the sealed rear sound cavity.
  • the second groove is a stepped groove.
  • the housing includes a front cover and a back cover respectively covering opposite sides of the sound-emitting unit along the vibration direction of the sound-emitting unit
  • said back cover includes a back cover main plate arranged opposite to the front cover and a back cover side plate bent and extended from the outer peripheral edge of the back cover main plate in the direction of the front cover and fixedly connected to the front cover.
  • the side panels of the rear cover are in contact with the front cover to form a seal.
  • a speaker box as described above wherein preferably, the side plate of the back cover is provided with a fourth groove connected to the rear sound cavity, and the housing is provided with a groove that is close to the housing.
  • a sealing cover completely covers the fourth groove.
  • the speaker box further includes a conductive terminal that connects the sound-emitting unit with external electrical signals, and the conductive terminal penetrates the housing and is partially exposed on the Said shell.
  • a speaker box as described above wherein, preferably, the back cover side panel is provided with a fifth groove formed by an end close to the front cover that is recessed toward the back cover main board, and the conductive terminal Extending from the fifth groove to the outside of the housing, the front cover is simultaneously pressed against the conductive terminal and the back cover side plate to form a sealing fixation.
  • the present invention sets a heat exchanger in the sound unit.
  • the sounder unit vibrates to generate heat, and the heat is transmitted to the heat exchange medium inside the heat exchanger through the wall of the heat exchanger.
  • the heat exchange medium contacts the air outside the sound unit to release heat through heat exchange, thereby improving the heat dissipation efficiency of the speaker box.
  • Figure 1 is a perspective view of the overall structure of an embodiment provided by the present invention.
  • Figure 2 is an exploded schematic diagram of the overall structure of an embodiment provided by the present invention.
  • Figure 3 is a front view of the overall structure of the embodiment provided by the present invention.
  • Figure 4 is a cross-sectional view along line A-A of Figure 3;
  • Figure 5 is a perspective view of the back cover of an embodiment of the present invention from an angle
  • Figure 6 is a perspective view of the back cover from another angle according to the embodiment of the present invention.
  • the speaker box in the prior art has a technical defect of poor heat dissipation. After research, it was found that this is because when the sound-emitting monomer in the speaker box is in working condition, the heat generated is transmitted through the air to the rear sound cavity and the front sound cavity for heat dissipation.
  • the bracket used to support the sound-emitting unit is a plastic structure, which has poor thermal conductivity and low heat dissipation efficiency.
  • the hot air in the rear sound cavity is enclosed in the rear sound cavity and can only contact the outside air through a leak hole. This results in poor heat dissipation and limited acoustic performance.
  • a speaker box 10 including a housing 100 and a sound unit, wherein:
  • the housing 100 has a receiving cavity 101 inside, and the sound-generating unit is fixed in the receiving cavity 101.
  • the sound-generating unit has a diaphragm for vibrating and making sounds.
  • the sound-generating unit divides the receiving cavity 101 into a sealed rear sound cavity 1012 and an external sound cavity 1012 connected with the outside of the housing 100.
  • the sound-generating unit is also provided with a heat exchange member 400.
  • a heat exchange cavity 401 is formed in the heat exchange member 400.
  • the heat exchange cavity 401 is filled with a heat exchange medium. Part of the heat exchange member 400 is exposed to the sound unit, so that the heat exchange member 400 is both It can be in contact with the sound-generating unit and can also be in contact with the outside air. In this way, the heat exchange member 400 can conduct and exchange heat between the sound-generating unit and the outside air.
  • the heat exchange medium is preferably coolant.
  • the heat exchange medium then passes through the wall of the heat exchange member 400 exposed to the air and the air outside the sound-generating unit.
  • the contact performs heat exchange and releases heat, thereby reducing the temperature of the sound-generating unit and improving the heat dissipation efficiency of the speaker box 10 .
  • the sound-generating unit includes a sound-generating unit 300 and a support body 200 that supports the sound-generating unit 300 on the heat exchange member 400.
  • the heat exchange member 400 is embedded in the support body 200, and Arranged in the circumferential direction of the sound-emitting unit 300, part of the heat exchange member 400 is exposed from the support body 200.
  • the heat exchange member 400 is a hollow tube structure.
  • the entire tube structure is bent into a roughly ring-shaped or square shape.
  • the sound-emitting unit 300 is located in the middle of the ring-shaped or square-shaped heat exchange member 400.
  • the main body of the heat element 400 is embedded in the support body 200, so that the main part of the heat exchange element 400 is wrapped in the support body 200.
  • the heat generated by the sound-emitting unit 300 is spread out, absorbed by the support body 200 and then transferred to In the heat exchange element 400, the main parts of the heat exchange element 400 can absorb heat evenly, thereby improving the heat exchange effect with the air.
  • the front and rear ends of the heat exchange member 400 are exposed to the outside of the support body 200 to exchange heat with air, and an injection port is formed at at least one of the front and rear ends.
  • the coolant is injected through the injection port, and after the injection is completed, it is sealed with glue or welded. Seal and complete the filling of heat exchange medium.
  • the heat exchange part 400 is made of metal.
  • the heat exchange part 400 made of metal has good thermal conductivity. When the diaphragm in the sound-emitting unit 300 is in the working state, the heat generated by the vibration is conducted on the heat exchange part 400 more efficiently. It is fast and efficient, thereby improving the overall heat dissipation performance of the speaker box 10 .
  • the heat exchange member 400 and the support body 200 are integrally injection molded, which makes the molding relatively simple and has high efficiency.
  • Step 1 Form the heat exchange part 400 in the shape of a metal tube body
  • Step 2 Position the heat exchanger 400 in the mold, split the mold for injection molding, and inject the heat exchanger 400 into the support body 200. Both ends of the heat exchanger 400 are exposed outside the support 200 to form an injection port;
  • Step 3 Inject the coolant through the injection port. After the injection, seal it with glue or welding to complete the assembly.
  • the first end of the support body 200 is fixedly received in the receiving cavity 101
  • the housing 100 is provided with a first groove 102 connected to the receiving cavity 101
  • the second end of the supporting body 200 passes through the first groove 102 .
  • a groove 102 extends to the outside of the housing 100.
  • the support body 200 is made of plastic material and has an annular structure.
  • the support body 200 is provided with a second groove 201 and a third groove 202.
  • the second groove 201 passes through The first end of the support body 200 forms an annular structure.
  • One end of the third groove 202 forms an opening on the second end of the support body 200. The opening is located outside the housing 100.
  • the other end of the third groove 202 extends to the second end of the support body 200.
  • the two grooves 201 are connected, and this structure forms the side sound emitting structure of the speaker box 10, so that the shape of the speaker box 10 matches the shape of the whole machine, which is beneficial to the flexible assembly of the speaker box 10 in the whole machine.
  • the sound-generating unit 300 is supported on the second groove 201.
  • the side of the sound-generating unit 300 with the diaphragm is disposed toward the second groove 201 and is spaced apart from the inner wall of the receiving cavity 101.
  • the groove wall of the second groove 201 surrounds the sound-generating unit 300.
  • the sound-emitting monomer 300 and the second groove 201 are sealed and fixed.
  • the sound-emitting monomer 300, the receiving cavity 101, the second groove 201 and the third groove 202 together form a front sound cavity 1011.
  • the sound-emitting monomer 300, The support body 200 and the receiving cavity 101 together form a sealed rear sound cavity 1012.
  • the second groove 201 is a stepped groove with a groove portion that gradually bends and shrinks.
  • the sound-generating unit 300 is fixed in the stepped groove, and the thickness of the sound-generating unit 300 and the support body 200 can be adjusted. Overlapping, thereby reducing the space occupied by the sound-emitting unit 300, is conducive to miniaturization of the speaker box 10.
  • the housing 100 has a split structure to facilitate molding, processing, and assembly.
  • the housing 100 includes separate covers along the vibration direction of the diaphragm of the sound-generating unit 300 .
  • the front cover 103 and the back cover 104 are provided on opposite sides of the sound-generating unit 300.
  • the front cover 103 is a plate structure
  • the back cover 104 includes a back cover main plate 1041 arranged opposite to the front cover 103 and an outer peripheral edge of the back cover main plate 1041.
  • the rear cover side panel 1042 is bent and extended toward the front cover 103 and is fixedly connected to the front cover 103 .
  • the rear cover side plate 1042 is in contact with the front cover 103 to form a sealing fixation.
  • the housing 100 and the cover are made of metal.
  • the metal housing 100 can be designed to be thinner than the all-plastic housing 100.
  • the front cover 103 and the back cover 104 can be fixed by metal welding, and there is no need to reserve more space for ultrasonic welding. While assembling the sound-emitting unit 300 in the same effective manner, the cavity in the housing 100 is greatly improved.
  • the volume of the speaker box 10 effectively increases the volume of the rear acoustic cavity 1012 formed by the sound-emitting unit 300 and the housing 100, thereby improving the acoustic performance of the speaker box 10, especially the low-frequency acoustic performance.
  • the rear cover side plate 1042 is provided with a fourth groove 105 connected to the rear sound cavity 1012
  • the housing 100 is provided with a sealing cover 106 that fits the housing 100 .
  • the sealing cover 106 completely covers the fourth slot 105.
  • the fourth slot 105 is used to improve the air pressure balance between the rear sound cavity 1012 and the outside world.
  • the sealing cover 106 can fill the rear sound cavity 1012 with sound-absorbing material through the fourth slot 105.
  • the sealing cover 106 can seal the fourth slot. 105 sealing, thereby making the assembly of the speaker box 10 simpler and more reliable.
  • the speaker box 10 further includes a conductive terminal 500 that connects the sound-emitting unit 300 with external electrical signals.
  • the conductive terminals 500 penetrate through the housing 100 and are partially exposed from the housing 100 .
  • the rear cover side panel 1042 is provided with a fifth groove 107 formed by an end close to the front cover 103 that is recessed toward the rear cover mainboard 1041 , and the conductive terminals 500 pass through
  • the fifth groove 107 extends to the outside of the housing 100 , and the front cover 103 is simultaneously pressed onto the conductive terminal 500 and the rear cover side plate 1042 to form a sealing fixation.
  • the structure facilitates assembly and improves assembly efficiency.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Thermal Sciences (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

一种扬声器箱，包括：具有收容腔的壳体；发声单元，固定于收容腔内，发声单元将收容腔分隔为密闭的后声腔以及与壳体的外部连通的前声腔；发声单元内还设有换热件，换热件内形成有换热腔，换热腔内填充有换热介质，部分换热件外露于发声单元。与现有技术相比，该扬声器箱通过于发声单元内设置换热件，扬声器箱在工作状态，发声单元振动产生热量，热量经由换热件的壁体传导给换热件内部的换热介质，换热介质与发声单元外部的空气接触进行热交换释放热量，从而提升了扬声器箱的散热效率。

Description

一种扬声器箱 技术领域
本发明涉及电声转换技术领域，特别是一种扬声器箱。
 背景技术
扬声器箱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，低频声音效果好。
现有技术的扬声器箱包括前盖、盖设于所述前盖并共同围成收容空间的后盖以及收容于所述收容空间内的发声单元，所述发声单元将所述收容空间分隔成前声腔和后声腔。然而，现有技术的扬声器箱的散热性较差进而使声学性能受限。
 技术问题
鉴于上述问题，本发明提供一种扬声器箱，以解决现有技术中的技术问题，它能够使得扬声器箱有良好的散热性。
 技术解决方案
第一方面，本发明提供了一种扬声器箱10，包括：
具有收容腔的壳体；
发声单元，固定于所述收容腔内，所述声单元将所述收容腔分隔为密闭的后声腔以及与所述壳体的外部连通的前声腔；
所述发声单元内还设有换热件，所述换热件内形成有换热腔，所述换热腔内填充有换热介质，部分所述换热件外露于所述发声单元。
如上所述的一种扬声器箱，其中，优选的是，所述发声单元包括发声单体以及将所述发声单体支撑于所述换热件上的支撑体，所述换热件嵌设于所述支撑体内，并设置于发声单体的周向，部分所述换热件外露于所述支撑体。
如上所述的一种扬声器箱，其中，优选的是，所述换热件为金属材质。
如上所述的一种扬声器箱，其中，优选的是，所述换热件与所述支撑体为一体注塑成型。
如上所述的一种扬声器箱，其中，优选的是，所述支撑体的第一端收容于所述收容腔内，所述壳体上开设有连通至所述收容腔的第一槽，所述支撑体的第二端经由所述第一槽延伸至所述壳体的外部，所述支撑体上设有第二槽和第三槽，所述第二槽贯穿所述支撑体的第一端，所述第三槽的一端于所述支撑体的第二端上形成开口，所述第三槽的另一端延伸至与所述第二槽连通；
所述发声单体支撑于所述第二槽上，所述发声单体、所述收容腔、所述第二槽以及所述第三槽共同围成所述前声腔，所述发声单体、所述支撑体以及所述收容腔共同围成密闭的所述后声腔。
如上所述的一种扬声器箱，其中，优选的是，所述第二槽为阶梯槽。
如上所述的一种扬声器箱，其中，优选的是，所述壳体包括沿所述发声单体的振动方向分别盖设于所述发声单体相对两侧的前盖和后盖，所述后盖包括与所述前盖相对设置的后盖主板和由所述后盖主板的外周缘向所述前盖的方向弯折延伸并与所述前盖固定连接的后盖侧板,所述后盖侧板抵接于所述前盖形成密封固定。
如上所述的一种扬声器箱，其中，优选的是，所述后盖侧板上开设有连通至所述后声腔的第四槽，所述壳体上开设有贴合于所述壳体的密封盖，所述密封盖完全覆盖所述第四槽。
如上所述的一种扬声器箱，其中，优选的是，所述扬声器箱还包括将所述发声单体与外界电信号连接的导电端子，所述导电端子贯穿所述壳体并部分外露于所述壳体。
如上所述的一种扬声器箱，其中，优选的是，所述后盖侧板设有由其靠近所述前盖的一端向所述后盖主板方向凹陷形成的第五槽，所述导电端子经所述第五槽内延伸至所述壳体外，所述前盖同时压设于所述导电端子及所述后盖侧板形成密封固定。
 有益效果
与现有技术相比，本发明通过于发声单元内设置换热件，扬声器箱在工作状态，发声单元振动产生热量，热量经由换热件的壁体传导给换热件内部的换热介质，换热介质与发声单元外部的空气接触进行热交换释放热量，从而提升了扬声器箱的散热效率。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，而可依照说明书的内容予以实施，并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂，以下特举本发明的具体实施方式。
 附图说明
通过阅读对下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本发明的限制。而且在全部附图中，用相同的附图标号表示相同的部件。在附图中：
图1是本发明所提供实施例的整体结构的立体图；
图2是本发明所提供实施例的整体结构的分解示意图；
图3是本发明所提供实施例的整体结构的正视图；
图4是图3的A-A向剖视图；
图5是本发明所提供实施例的后盖的一个角度的立体图；
图6是本发明所提供实施例的后盖的另一个角度的立体图；
在附图中，附图未必按照实际的比例绘制。
具体实施方式中的附图标号如下：
10-扬声器箱；
100-壳体，101-收容腔，1011-前声腔，1012-后声腔，102-第一槽，103-前盖，104-后盖，1041-后盖主板，1042-后盖侧板，105-第四槽，106-密封盖，107-第五槽；
200-支撑体，201-第二槽，202-第三槽；
300-发声单体；
400-换热件，401-换热腔；
500-导电端子。
 本发明的最佳实施方式
下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能解释为对本发明的限制。
现有技术中的扬声器箱存在散热性较差的技术缺陷，经过研究发现，这是由于扬声器箱内的发声单体处于工作状态时，产生的热量通过空气向后声腔和前声腔传输进行散热，而一方面用于支撑发声单体的支架是塑料结构，其导热性较差，散热效率低，另一方面后声腔的热空气封闭在后声腔内，只能通过一个泄露孔与外部空气接触，从而导致散热性较差进而使声学性能受限。
为提高扬声器箱10的散热功能，参照图1至图6所示，申请人提供了一种扬声器箱10，包括壳体100以及发声单元，其中：
壳体100的内部具有收容腔101，发声单元固定于收容腔101内，发声单元具有用于振动发声的振膜，发声单元将收容腔101分隔为密闭的后声腔1012以及与壳体100的外部连通的前声腔1011，振膜收容于前声腔1011内。
发声单元内还设有换热件400，换热件400内形成有换热腔401，换热腔401内填充有换热介质，部分换热件400外露于发声单元，使得换热件400既可以与发声单元接触，又可以与外界空气接触，这样换热件400可以对发声单元以及外界空气之间进行热量的传导与交换，换热介质优选为冷却液，扬声器箱10在工作状态时，发声单元振动产生热量，热量经由换热件400的壁体传导给换热腔401内的换热介质，换热介质再通过暴露于空气中的换热件400的壁体与发声单元外部的空气接触进行热交换释放热量，从而降低发声单元的温度，提升了扬声器箱10的散热效率。
进一步地，参照图2和图4所示，发声单元包括发声单体300以及将发声单体300支撑于换热件400上的支撑体200，换热件400嵌设于支撑体200内，并设置于发声单体300的周向，部分换热件400外露于支撑体200。
在一些实施例中，换热件400为中空的管体结构，管体结构整体弯折呈大致环状或方状，发声单体300位于环状或方状结构的换热件400中间，换热件400的主体嵌设于支撑体200内，从而使得换热件400的主要部分均包裹于支撑体200内，发声单体300产生的热量四散开来，被支撑体200吸收后传到至换热件400内，换热件400的主要部分均可以均匀吸收热量，从而可以提高与空气的换热效果。换热件400的首尾两端暴露于支撑体200的外部，以与空气进行换热，且于首尾两端的至少一端形成注射口，通过注射口注射好冷却液，注射好后用胶水密封或者焊接密封，完成换热介质的填充。
进一步地，换热件400为金属材质，金属材质的换热件400，其导热性良好，发声单体300内的振膜在工作状态时，振动产生的热量在换热件400上的传导更加快速高效，从而提升了扬声器箱10的整体散热性能。
进一步地，为提高换热件400和支撑体200的装配效率，且利于成型加工，在一些实施例中，换热件400与支撑体200为一体注塑成型，这样成型比较简易，同时具有很高的生产效率，具体地，换热件400与支撑体200的制备流程为：
步骤1：将金属管体形状的换热件400成型；
步骤2：模具内定位换热件400，分模注塑成型，将换热件400注塑在支撑体200内，换热件400的两端暴露于支撑体200外，以形成注射口；
步骤3：通过注射口注射好冷却液，注射好后用胶水密封或者焊接密封，完成装配。
进一步地，参照图4所示，支撑体200的第一端固定收容于收容腔101内，壳体100上开设有连通至收容腔101的第一槽102，支撑体200的第二端经由第一槽102延伸至壳体100的外部，优选的是，支撑体200为塑料材料制成并呈环状结构，支撑体200上设有第二槽201和第三槽202，第二槽201贯穿支撑体200的第一端以形成环状结构，第三槽202的一端于支撑体200的第二端上形成开口，开口位于壳体100的外部，第三槽202的另一端延伸至与第二槽201连通，该结构形成扬声器箱10的侧发声结构，使得扬声器箱10的外形匹配整机外形，有利于扬声器箱10在整机中的灵活装配。
发声单体300支撑于第二槽201上，发声单体300设有振膜的一侧朝向第二槽201设置，并与收容腔101的内壁面间隔设置，第二槽201的槽壁环绕发声单体300的周侧，发声单体300与第二槽201形成密封固定，发声单体300、收容腔101、第二槽201以及第三槽202共同围成前声腔1011，发声单体300、支撑体200以及收容腔101共同围成密闭的后声腔1012。
进一步地，继续参照图4所示，第二槽201为阶梯槽，具有逐步弯折收缩的槽部，发声单体300固定于阶梯槽内，可以将发声单体300与支撑体200的厚度进行重合，从而减小了发声单体300的所占空间，有利于扬声器箱10的小型化。
在一些实施例中，参照图2以及图4所示，壳体100为分体式结构，以方便成型加工以及装配，具体地，壳体100包括沿发声单体300的振膜的振动方向分别盖设于发声单体300相对两侧的前盖103和后盖104，前盖103为板体结构，后盖104包括与前盖103相对设置的后盖主板1041和由后盖主板1041的外周缘向前盖103的方向弯折延伸并与前盖103固定连接的后盖侧板1042。后盖侧板1042抵接于前盖103形成密封固定。
进一步地，壳体100以及盖板均为金属材质，在确保壳体100的结构强度的前提下，金属材质的壳体100相对于全塑料壳体100结构可设计得更薄，且由于金属材料的前盖103和后盖104可以通过金属焊接固定，不需要为超声波焊接预留更多的空间，在同样有效的装配发声单体300的同时，极大程度的提高了壳体100内的腔体体积，有效的增加了发声单体300与壳体100围成的后声腔1012的体积，进而改善了扬声器箱10的声学性能，特别是低频声学性能。
进一步地，参照图5以及图6所示，后盖侧板1042上开设有连通至后声腔1012的第四槽105，壳体100上开设有贴合于壳体100的密封盖106，密封盖106完全覆盖第四槽105，第四槽105用于改善后声腔1012与外界的气压平衡，密封盖106可以在通过第四槽105向后声腔1012填充吸音材料后，密封盖106将第四槽105密封，从而使得扬声器箱10的组装更为简单可靠。
进一步地，参照图1以及图4所示，扬声器箱10还包括将发声单体300与外界电信号连接的导电端子500。导电端子500贯穿壳体100并部分外露于壳体100。
一些实施例中，参照图1、图5以及图6所示，后盖侧板1042设有由其靠近前盖103的一端向后盖主板1041方向凹陷形成的第五槽107，导电端子500经第五槽107内延伸至壳体100外，前盖103同时压设于导电端子500及后盖侧板1042形成密封固定。该结构方便装配，提高了装配效率。
以上依据图式所示的实施例详细说明了本发明的构造、特征及作用效果，以上仅为本发明的较佳实施例，但本发明不以图面所示限定实施范围，凡是依照本发明的构想所作的改变，或修改为等同变化的等效实施例，仍未超出说明书与图示所涵盖的精神时，均应在本发明的保护范围内。

Claims (10)

  1. 一种扬声器箱，包括：
    具有收容腔的壳体；
    发声单元，固定于所述收容腔内，所述发声单元将所述收容腔分隔为密闭的后声腔以及与所述壳体的外部连通的前声腔；
    其特征在于：
    所述发声单元内还设有换热件，所述换热件内形成有换热腔，所述换热腔内填充有换热介质，部分所述换热件外露于所述发声单元。
  2. 根据权利要求1所述的扬声器箱，其特征在于：所述发声单元包括发声单体以及将所述发声单体支撑于所述换热件上的支撑体，所述换热件嵌设于所述支撑体内，并设置于发声单体的周向，部分所述换热件外露于所述支撑体。
  3. 根据权利要求2所述的扬声器箱，其特征在于：所述换热件为金属材质。
  4. 根据权利要求3所述的扬声器箱，其特征在于：所述换热件与所述支撑体为一体注塑成型。
  5. 根据权利要求2所述的扬声器箱，其特征在于：所述支撑体的第一端收容于所述收容腔内，所述壳体上开设有连通至所述收容腔的第一槽，所述支撑体的第二端经由所述第一槽延伸至所述壳体的外部，所述支撑体上设有第二槽和第三槽，所述第二槽贯穿所述支撑体的第一端，所述第三槽的一端于所述支撑体的第二端上形成开口，所述第三槽的另一端延伸至与所述第二槽连通；
    所述发声单体支撑于所述第二槽上，所述发声单体、所述收容腔、所述第二槽以及所述第三槽共同围成所述前声腔，所述发声单体、所述支撑体以及所述收容腔共同围成密闭的所述后声腔。
  6. 根据权利要求5所述的扬声器箱，其特征在于：所述第二槽为阶梯槽。
  7. 根据权利要求2所述的扬声器箱，其特征在于：所述壳体包括沿所述发声单体的振动方向分别盖设于所述发声单体相对两侧的前盖和后盖，所述后盖包括与所述前盖相对设置的后盖主板和由所述后盖主板的外周缘向所述前盖的方向弯折延伸并与所述前盖固定连接的后盖侧板,所述后盖侧板抵接于所述前盖形成密封固定。
  8. 根据权利要求7所述的扬声器箱，其特征在于：所述后盖侧板上开设有连通至所述后声腔的第四槽，所述壳体上开设有贴合于所述壳体的密封盖，所述密封盖完全覆盖所述第四槽。
  9. 根据权利要求7所述的扬声器箱，其特征在于，所述扬声器箱还包括将所述发声单体与外界电信号连接的导电端子，所述导电端子贯穿所述壳体并部分外露于所述壳体。
  10. 根据权利要求9所述的扬声器箱，其特征在于，所述后盖侧板设有由其靠近所述前盖的一端向所述后盖主板方向凹陷形成的第五槽，所述导电端子经所述第五槽内延伸至所述壳体外，所述前盖同时压设于所述导电端子及所述后盖侧板形成密封固定。
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