WO2022041434A1 - 扬声器箱 - Google Patents
扬声器箱 Download PDFInfo
- Publication number
- WO2022041434A1 WO2022041434A1 PCT/CN2020/123385 CN2020123385W WO2022041434A1 WO 2022041434 A1 WO2022041434 A1 WO 2022041434A1 CN 2020123385 W CN2020123385 W CN 2020123385W WO 2022041434 A1 WO2022041434 A1 WO 2022041434A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sound
- cover
- front cover
- bracket
- spacer
- Prior art date
Links
- 239000000843 powder Substances 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 239000007769 metal material Substances 0.000 claims abstract description 8
- 125000006850 spacer group Chemical group 0.000 claims description 41
- 239000011358 absorbing material Substances 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2811—Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
Definitions
- the invention relates to the field of electro-acoustic conversion, in particular to a speaker box used in portable mobile electronic products.
- Speaker boxes are 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 good low-frequency sound effect.
- the speaker box of the related art includes a front cover, a rear cover that is covered on the front cover and jointly encloses a receiving space, and a sound-emitting unit received in the receiving space, and the sound-emitting unit divides the receiving space into Anterior and posterior chambers.
- the front cover and the rear cover of the speaker box are injection-molded, and ultrasonic welding is used to realize the sealing of the sound-emitting unit.
- Ultrasonic welding requires more volume, thus limiting the volume design of the front cavity and the rear cavity. , which in turn limits the acoustic performance.
- the purpose of the present invention is to provide a speaker box with good low-frequency acoustic performance.
- the present invention provides a loudspeaker box, which includes a housing with a receiving space and a sound-generating unit fixedly accommodated in the receiving space, the sound-generating unit including a diaphragm for vibrating and sounding;
- the casing is made of metal material, and the casing includes a front cover and a back cover fixed on the front cover. The front cover and the back cover together form the receiving space;
- the speaker box It also includes a bracket made of plastic located in the receiving space, the bracket includes a ring-shaped bracket body sealed and fixed with the front cover, and a sound-guiding channel extending from the bracket body and having a sound-guiding channel.
- the side of the sound-generating unit with the vibrating membrane is supported and sealed to the bracket body and is spaced from the front cover, and the sound-generating unit, the bracket and the front cover together form a front cover.
- a sound cavity the sound guide channel communicates with the front sound cavity;
- the casing is provided with a sound outlet passing through it, and the sound guide part abuts on the casing and completely covers the sound outlet, so The sound guide channel is communicated with the sound outlet, and the support, the sound producing unit, the upper cover and the lower cover together form a closed rear sound cavity;
- a accommodating step is recessed in the direction close to the sound-generating unit and is formed together, and the accommodating step is provided with a powder filling hole that penetrates the upper cover and the lower cover at the same time;
- the speaker box also includes a cover fixed to the The sealing cover of the receiving step and completely covering the powder filling hole.
- the outer side of the sealing cover away from the sound-generating unit is flush with the outer side of the casing on the side away from the sound-generating unit.
- the front cover includes a front cover body and a front cover side wall extending from the outer peripheral edge of the front cover body toward the rear cover;
- the rear cover includes a rear cover that is relatively spaced from the front cover body
- the cover body and the back cover side wall which is bent and extended in the direction of the front cover from the peripheral edge of the back cover body and abutted and fixed with the side wall of the front cover, the receiving step is formed by the side wall of the front cover and the back cover.
- the side walls of the rear cover are formed concavely together, and the powder filling holes are simultaneously arranged through the side walls of the front cover and the side walls of the rear cover.
- the bracket is fixedly connected with the front cover body, the sound outlet is disposed through the side wall of the front cover, and the sound guide part abuts against the side wall of the front cover.
- a positioning step is formed on the inner periphery of the bracket body, the sounding unit is supported on the positioning step, and the bracket body is partially arranged around the circumference of the sounding unit and forms a seal with the sounding unit fixed.
- the speaker box further includes a ventilating spacer located in the rear acoustic cavity, the ventilating spacer is attached to the sound-generating unit and separates the sound-generating unit from the rear acoustic cavity.
- the ventilating spacer includes a spacer body that is spaced apart from the lower cover plate and is attached to the sound-generating unit, and a spacer that is bent and extended from the periphery of the spacer body toward the bracket. an extension part and a spacer fixing part bent and extended from one end of the spacer extension part away from the spacer body; the spacer extension part and the casing are arranged at intervals, and the spacer fixing part is fixed to the spacer
- the bracket body is close to the side of the lower cover plate; the breathable spacer, the bracket and the shell together form a powder filling space, and the sound-absorbing material is filled in the powder filling space through the powder filling hole Inside, the sealing cover encapsulates the sound-absorbing material in the powder filling space.
- the speaker box further includes a conductive member that connects the sound-emitting unit with an external electrical signal
- the conductive member includes a conductive member body supported and fixed on one end of the bracket body close to the back cover, and the conductive member is The two ends of the conductive part body extend toward the sound-generating unit and are fixed and electrically connected to the connecting arm; an extension arm; the spacer fixing portion is simultaneously press-fitted and fixed on the conductive element body and the bracket body.
- the shell is made of metal material, and the front cover and the rear cover can be made of thinner steel sheets. It is set on the premise of ensuring the structural strength of the casing.
- the casing can be designed to be thinner, and the bracket made of plastic material is combined with the front cover to support
- the sound-generating unit is fixed, and the sound-generating unit can be effectively assembled, thereby greatly increasing the volume of the cavity in the shell, effectively increasing the volume of the rear sound cavity enclosed by the sound-generating unit and the shell, and improving the speaker.
- the acoustic performance of the box especially the low-frequency acoustic performance; in addition, through the cooperation of the powder filling hole and the sealing cover, it is more convenient to fill the sound-absorbing material into the rear acoustic cavity, and the efficiency of filling the sound-absorbing material is improved.
- Fig. 1 is the three-dimensional 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 schematic exploded schematic diagram of a partial three-dimensional structure of the speaker box of the present invention from another angle;
- Fig. 4 is a sectional view along line A-A in Fig. 1;
- FIG. 5 is an enlarged view of the part shown in B in FIG. 1 .
- the present invention provides a speaker box 100 , which includes a housing 1 having a receiving space 10 and a sounding unit 2 fixedly received in the receiving space 10 , and located in the receiving space 10 .
- the inner bracket 3 and the auxiliary cavity shell 4 covered on the outer side of the housing 1 .
- the casing 1 is made of a metal material, and it can be a split structure or an integrated structure.
- the casing 1 is a split structure, which includes The front cover 11 and the rear cover 12 fixed on the front cover 11 and made of metal material, the front cover 11 and the rear cover 12 together enclose the receiving space 10, the front cover 11 is provided with a sound outlet 13 which runs through it and communicates with the outside world.
- the bracket 3 is made of plastic and has an annular structure, and the bracket 3 forms a fixed connection with the front cover 11 .
- the sound-generating unit 2 includes a vibrating membrane 21 for vibrating and sounding.
- the sound-generating unit 2 is fixedly supported on the bracket 3 and is sealed and fixed with the bracket 3, so that the sound-generating unit 2, the The bracket 3 , the front cover 11 and the rear cover 12 together form a sealed rear acoustic cavity 102 .
- the housing 1 is bent and recessed toward the receiving step 14 formed by the sound-emitting unit 2 .
- the receiving step 14 is provided with a powder filling hole 140 therethrough, and the powder filling hole 140 communicates with the rear acoustic cavity 102;
- the speaker box also includes a cover fixed on the receiving step 14 and completely covering the The sealing cover 4 of the powder filling hole 140 .
- the accommodating step 14 includes two connecting walls 141 which are respectively bent and extended from the housing 1 in a direction close to the sounding unit 2 and are arranged at intervals, and two connecting walls 141 are arranged at intervals from the housing 1 and are connected with the two connecting walls 141 .
- the bottom wall 142 is connected to the connecting wall 141 , the powder filling hole 140 is disposed through the bottom wall 142 , and the sealing cover 4 is covered and fixed on the bottom wall 142 .
- the outer side surface 41 of the sealing cover 4 away from the sounding unit 2 is flush with the outer side 1a of the casing 1 on this side away from the sounding unit 2, and this setting makes the sealing cover
- the setting of 4 does not increase the external dimension of the speaker box 100, so that the outer side of the speaker box 100 is more flat.
- the front cover 11 and the rear cover 12 are made of metal materials, and they can be made of thinner steel sheets.
- the front cover 11 and the rear cover 12 are combined by metal welding to form the metal casing 1.
- This structure is provided on the premise of ensuring the structural strength of the casing 1, and compared with the all-plastic casing structure of the related art.
- the shell 1 can be designed to be thinner, and the bracket 3 made of plastic material is fixed to the front cover 11 to support and fix the sound-producing unit 2, and can effectively assemble the sound-producing unit 2, thereby extremely
- the volume of the cavity in the casing 1 is greatly increased, and the volume of the rear acoustic cavity 102 enclosed by the sounding unit 2 and the casing 1 is effectively increased, thereby improving the acoustic performance of the speaker box, especially Low-frequency acoustic performance; and here, through the cooperation of the powder filling hole 140 and the sealing cover 4, it is more convenient to fill the sound-absorbing material into the rear acoustic cavity 102, and the efficiency of filling the sound-absorbing material is improved.
- the front cover 11 includes a front cover body 111 provided with the sound outlet 13 , a front cover side wall 112 extending from the outer peripheral edge of the front cover body 111 toward the rear cover 12 ; the The sound outlet 13 is disposed through the side wall 112 of the front cover along the vibration direction perpendicular to the diaphragm 21 .
- the rear cover 12 includes a rear cover body 121 disposed opposite to the front cover body 111 and a rear cover body 121 . Abutting against the fixed rear cover side wall 122 ; more preferably, the front cover side wall 112 is far away from the outer side 1121 of the sounding unit 2 and the rear cover side wall 122 is far away from the outer side of the sounding unit 2 1221 is flush, which effectively improves the overall flatness of the outside of the speaker box 100 .
- the front cover 11 is fixed by welding the front cover side wall 112 and the rear cover side wall 122 of the rear cover.
- the front cover 11 and the rear cover 12 are relatively plastic in the prior art The structure can be designed thinner, and the fixing strength is more reliable.
- the accommodating step 14 is formed by the front cover 11 and the rear cover 12 , which are bent and recessed, and are jointly enclosed, and the powder filling hole 140 is provided through the front cover 11 and the rear cover 12 at the same time. .
- the accommodating step 14 is formed by the side wall 112 of the front cover and the side wall 122 of the rear cover together being bent and recessed, and the powder filling hole 140 penetrates the side wall 112 of the front cover and the rear cover
- the cover side wall 122 is provided.
- the side wall 112 of the front cover is recessed to form a first step 113
- the first step 113 is formed by bending and extending from the side wall 112 of the front cover to the direction close to the sounding unit 2 and arranged at intervals.
- two first connecting walls 1131 and a first bottom wall 1132 spaced from the side wall 112 of the front cover and connected to the two first connecting walls 1131, the first bottom wall 1132 is provided
- the back cover side wall 122 is recessed to form a second step 123, and the second step 123 includes bending from the back cover side wall 122 to the direction close to the sounding unit 2, respectively.
- Second connecting walls 1231 and a second bottom wall 1232 spaced apart from the rear cover side wall 122 and connected to the two second connecting walls 1231, the second bottom walls 1232 are There is a second arc-shaped hole 1230 therethrough.
- the first step 113 and the second step 123 together constitute the receiving step 14 of the housing 1, and the first connecting wall 1131 is connected to the The second connecting wall 1231 is connected and matched with each other, the first bottom wall 1132 is connected with the second bottom wall 1232 and the two are matched with each other, and the first arc-shaped hole 1130 is matched with the The second arc-shaped holes 1230 are assembled together to form the powder filling hole 140, and the sealing cover 4 is covered and fixed on the first bottom wall 1132 and the second bottom wall 1232 at the same time; The outer side 41 of the sealing cover 4 away from the sounding unit 2 is flush with the outer side 1121 of the front cover side wall 112 and the outer side 1221 of the rear cover side wall 122 on this side.
- the receiving steps are only provided by the front cover or the rear cover, which will not be repeated here.
- the bracket 3 forms a fixed connection with the front cover body 111 .
- the bracket 3 includes a ring-shaped bracket body 31 that is sealed and fixed to the front cover 11 , and is formed on the inner periphery of the bracket body 31 .
- the positioning step 32 and the sound guide part 33 with the sound guide channel 30 extending from the bracket body 31 are formed.
- the side of the sound-generating unit 2 with the diaphragm 21 is supported and sealed to the bracket body 31 and is spaced from the front cover 11 .
- the sound-generating unit 2 , the bracket 3 and the front cover 11 together form a front acoustic cavity 101, the sound guide portion 33 abuts on the housing 1 and completely covers the sound outlet 110, and the sound guide channel 30 connects the front acoustic cavity 101 with the sound outlet 13 is connected to form the side-emitting structure of the speaker box 100 .
- the positioning step 32 is formed by the inner periphery of the bracket body 31 being recessed along the vibration direction, and the sound guide portion 33 is formed by protruding and extending from the outer side of the bracket body 31 along the vibration direction.
- the sound generating unit 2 is supported on the side of the positioning step 32 away from the front cover main body 111 , and the sound guide portion 33 abuts against the front cover side wall 112 .
- the bracket body 31 is partially disposed around the periphery of the sound-generating unit 2 and forms a seal with the sound-generating unit 2, so that the rear acoustic cavity 102 forms a closed space for improving low-frequency acoustic performance.
- the speaker box 100 further includes a ventilating spacer 5 located in the rear acoustic cavity 102, the ventilating spacer 5 is attached to the sound-emitting unit 2 and the The sound-generating unit 2 is separated from the rear sound cavity 102 , so that the rear sound cavity 102 can be filled with sound-absorbing materials.
- the ventilating spacer 5 includes a spacer body 51 that is spaced apart from the rear cover 12 and is attached to the sounding unit 1 , and is bent toward the bracket 3 from the periphery of the spacer body 51 .
- the spacer extension portion 52 that is folded and extended and the spacer fixing portion 53 that is bent and extended from one end of the spacer extension portion 52 away from the spacer body 51 can be bent and extended toward the direction close to the side wall 112 of the front cover. It can also be bent and extended in a direction away from the side wall 112 of the front cover.
- the spacer extending portion 52 is spaced apart from the housing 1 , and the spacer fixing portion 52 is fixed to the side of the bracket body 31 close to the rear cover 12 .
- the breathable spacer 5, the bracket 3, the front cover 11 and the rear cover 12 together form a powder filling space, and the powder filling space is used to fill sound-absorbing materials, such as sound-absorbing particles, sound-absorbing cotton, etc.
- the sound-absorbing material is filled in the powder-filling space through the powder-filling hole 1120 , and the sealing cover 4 encapsulates the sound-absorbing material in the powder-filling space.
- the auxiliary acoustic cavity 103 is also filled with sound-absorbing material, which further optimizes the low-frequency acoustic performance.
- the speaker box 100 further includes a conductive member 6 that connects the sound generating unit 2 with external electrical signals.
- the conductive member 6 includes a conductive member body 61 supported and fixed on one end of the bracket body 31 close to the rear cover 12 .
- a connecting arm 62 that extends and is fixed and electrically connected to the sounding unit 2 and an extension arm 63 that extends away from the sounding unit 2 from the conductor body 61 and penetrates through the housing 1 .
- the extension arm 63 penetrates the front cover side wall 112 and the rear cover side wall 122 at the same time, and the position of the bracket body 31 opposite to the conductive member body 61 is recessed to form a receiving groove 310 .
- the conductive body 61 is accommodated in the accommodating slot 310 and supported on the bracket body 31 .
- This structure is convenient for assembly.
- the position passing through the side wall 112 of the front cover and the position passing through the side wall 122 of the rear cover can be preliminarily used as assembly positioning to improve assembly. effectiveness.
- the spacer fixing portion 53 simultaneously presses A bracket body 31 fixed to the conductive element body 61 and the bracket 3 is provided.
- the shell is made of metal material, and the front cover and the rear cover can be made of thinner steel sheets. It is set on the premise of ensuring the structural strength of the casing.
- the casing can be designed to be thinner, and the bracket made of plastic material is combined with the front cover to support
- the sound-generating unit is fixed, and the sound-generating unit can be effectively assembled, thereby greatly increasing the volume of the cavity in the shell, effectively increasing the volume of the rear sound cavity enclosed by the sound-generating unit and the shell, and improving the speaker.
- the acoustic performance of the box especially the low-frequency acoustic performance; in addition, through the cooperation of the powder filling hole and the sealing cover, it is more convenient to fill the sound-absorbing material into the rear acoustic cavity, and the efficiency of filling the sound-absorbing material is improved.
Abstract
本发明提供了一种扬声器箱，其包括具有收容空间且由金属材料制成的壳体、分别固定收容于收容空间内的发声单体和由塑料制成的支架；壳体包括共同围成收容空间的前盖和后盖；支架包括与前盖密封固定的支架本体和具有导声通道的导声部，发声单体密封固定于支架本体并与前盖间隔，发声单体、支架和前盖共同围成前声腔；壳体设有出声口，导声部抵接于壳体并覆盖出声口，导声通道将前声腔与出声口连通，支架、发声单体、上盖及下盖共同围成密闭的后声腔；前盖和后盖分别弯折凹陷并共同围成收容台阶，收容台阶设有贯穿前盖和后盖的灌粉孔；扬声器箱还包括固定于收容台阶并完全覆盖灌粉孔的密封盖。与相关技术相比，本发明的扬声器箱低频声学性能更优。
Description
本发明涉及电声转换领域，尤其涉及一种运用于便携式移动电子产品的扬声器箱。
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。
相关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体，所述发声单体将所述收容空间分隔成前腔和后腔。
然而，相关技术中，扬声器箱的前盖和后盖采用注塑成型，并采用超声波焊接的方式实现发声单体的封闭，超声波焊接需要更多的体积，从而限制了前腔和后腔的体积设计，进而使声学性能受限。
因此，有必要提供一种新的扬声器箱解决上述技术问题。
本发明的目的在于提供一种低频声学性能好的扬声器箱。
为了达到上述目的，本发明提供一种扬声器箱，其包括具有收容空间的壳体和固定收容于所述收容空间内的发声单体，所述发声单体包括用于振动发声的振膜；所述壳体由金属材料制成，所述壳体包括前盖以及盖设固定于所述前盖的后盖，所述前盖和所述后盖共同围成所述收容空间；所述扬声器箱还包括位于所述收容空间内的由塑料制成的支架，所述支架包括与所述前盖密封固定的呈环状的支架本体以及由所述支架本体延伸形成的具有导声通道的导声部，所述发声单体设有所述振膜的一侧支撑密封固定于所述支架本体并与所述前盖间隔，所述发声单体、所述支架和所述前盖共同围成前声腔，所述导声通道与所述前声腔连通；所述壳体设有贯穿其上的出声口，所述导声部抵接于所述壳体并完全覆盖所述出声口，所述导声通道与所述出声口连通，所述支架、所述发声单体、所述上盖及所述下盖共同围成密闭的后声腔；所述上盖和所述下盖分别向靠近所述发声单体的方向凹陷并共同围成的收容台阶，所述收容台阶设有同时贯穿所述上盖和所述下盖的灌粉孔；所述扬声器箱还包括盖设固定于所述收容台阶并完全覆盖所述灌粉孔的密封盖。
优选的，所述密封盖远离所述发声单体的外侧面与该侧的所述壳体远离所述发声单体的外侧面平齐。
优选的，所述前盖包括前盖本体以及由所述前盖本体的外周缘向所述后盖方向延伸的前盖侧壁；所述后盖包括与所述前盖本体相对间隔设置的后盖本体以及由的述后盖本体的周缘向所述前盖方向弯折延伸并与所述前盖侧壁抵接固定的后盖侧壁，所述收容台阶由所述前盖侧壁和所述后盖侧壁共同凹陷形成，所述灌粉孔同时贯穿所述前盖侧壁和所述后盖侧壁设置。
优选的，所述支架与所述前盖本体形成固定连接，所述出声口贯穿所述前盖侧壁设置，所述导声部抵接于所述前盖侧壁。
优选的，所述支架本体的内周缘形成定位台阶，所述发声单体支撑于所述定位台阶，所述支架本体部分环绕所述发声单体的周侧设置并与所述发声单体形成密封固定。
优选的，所述扬声器箱还包括位于所述后声腔内的透气隔离件，所述透气隔离件贴设于所述发声单体并将所述发声单体从所述后声腔内分隔。
优选的，所述透气隔离件包括与所述下盖板间隔相对并贴合于所述发声单体的隔离件本体、由所述隔离件本体的周缘向所述支架方向弯折延伸的隔离件延伸部以及由所述隔离件延伸部远离所述隔离件本体的一端弯折延伸的隔离件固定部；所述隔离件延伸部与所述壳体间隔设置，所述隔离件固定部固定于所述支架本体靠近所述下盖板的一侧；所述透气隔离件、所述支架及所述壳体共同围成灌粉空间，通过所述灌粉孔将吸音材料填充于所述灌粉空间内，所述密封盖将所述吸音材料封装于所述灌粉空间内。
优选的，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件，所述导电件包括支撑固定于所述支架本体靠近所述后盖一端的导电件本体、由所述导电件本体的两端向所述发声单体方向延伸并与所述发声单体固定电连接的连接臂以及由所述导电件本体向远离所述发声单体方向延伸并贯穿所述壳体的延伸臂；所述隔离件固定部同时压设固定于所述导电件本体及所述支架本体。
与相关技术相比，本发明的扬声器箱中，前盖、后盖以及支架的组合结构，壳体为金属材料制成，则前盖、后盖可以采用较薄的钢片制成，该结构设置在确保壳体的结构强度的前提下，而相对于相关技术的全塑料壳体结构而言，壳体可设计得更薄，而通过塑料材料制成的支架与前盖组合，用以支撑固定发声单体，又能有效的装配发声单体，从而极大程度的提高了壳体内的腔体体积，有效的增加了发声单体与壳体围成的后声腔的体积，进而改善了扬声器箱的声学性能，特别是低频声学性能；另外，通过灌粉孔及密封盖的配合设置，使得往后声腔内填充吸音材料更加方便，提高了灌装吸音材料的效率。
为了更清楚地说明本发明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发明的一些实施例，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为本发明扬声器箱的立体结构示意图；
图2为本发明扬声器箱的部分立体结构分解示意图；
图3为本发明扬声器箱另一角度的部分立体结构分解示意图；
图4为沿图1中A-A线的剖示图；
图5为图1中B所示部分放大图。
下面将结合本发明实施例中的附图，对本发明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发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。
请同时参阅图1-5，本发明提供了一种扬声器箱100，其包括具有收容空间10的壳体1和固定收容于所述收容空间10内的发声单体2、位于所述收容空间10内的支架3以及盖设于所述壳体1外侧的辅助腔壳4。
所述壳体1为金属材料制成，其可以为分体结构，也可以为一体结构，比如，在本市实施方式中，所述壳体1为分体结构，其包括由金属材料制成的前盖11以及盖设固定于所述前盖11的且由金属材料制成的后盖12，所述前盖11与所述后盖12共同围成所述收容空间10，所述前盖11设有贯穿其上的且与外界连通的出声口13。
所述支架3由塑料制成并呈环状结构，所述支架3与所述前盖11形成固定连接。
所述发声单体2包括用于振动发声的振膜21，所述发声单体2固定支撑于所述支架3并与所述支架3形成密封固定，从而，所述发声单体2、所述支架3、所述前盖11以及所述后盖12共同围成密闭的后声腔102。
更具体的，为了更方便地向所述后声腔102中灌装吸音材料，在本实施方式中，所述壳体1向靠近所述发声单体2的方向弯折凹陷形成的收容台阶14，所述收容台阶14设有贯穿其上的灌粉孔140，所述灌粉孔140与所述后声腔102连通；所述扬声器箱还包括盖设固定于所述收容台阶14并完全覆盖所述灌粉孔140的密封盖4。
进一步的，所述收容台阶14包括由所述壳体1分别向靠近所述发声单体2的方向弯折延伸且间隔设置的两个连接壁141以及与所述壳体1间隔设置并与两个所述连接壁141连接的底壁142，所述灌粉孔140贯穿所述底壁142设置，所述密封盖4盖设固定于所述底壁142。
更优的，所述密封盖4远离所述发声单体2的外侧面41与该侧的所述壳体1远离所述发声单体2的外侧面1a平齐，该设置使得所述密封盖4的设置，不会增加所述扬声器箱100的外形尺寸，使得所述扬声器箱100的外侧面更加平整。
上述结构中，前盖11、后盖12以及支架3的组合结构，所述前盖11和所述后盖12为金属材料制成，两者可以采用较薄的钢片制成，此时，所述前盖11和所述后盖12采用金属焊接的方式组合形成金属的壳体1，该结构设置在确保壳体1的结构强度的前提下，而相对于相关技术的全塑料壳体结构而言，所述壳体1可设计得更薄，而通过塑料材料制成的支架3与前盖11固定，用以支撑固定发声单体2，又能有效的装配发声单体2，从而极大程度的提高了壳体1内的腔体体积，有效的增加了发声单体2与所述壳体1围成的后声腔102的体积，进而改善了所述扬声器箱的声学性能，特别是低频声学性能；而此处，通过所述灌粉孔140及所述密封盖4的配合设置，使得往所述后声腔102内填充吸音材料更加方便，提高了灌装吸音材料的效率。
具体的，所述前盖11包括设有所述出声口13的前盖本体111、由所述前盖本体111的外周缘向所述后盖12方向延伸的前盖侧壁112；所述出声口13沿垂直所述振膜21的振动方向贯穿所述前盖侧壁112设置。
所述后盖12包括与所述前盖本体111相对间隔设置的后盖本体121以及由的述后盖本体121的周缘向所述前盖11方向弯折延伸并与所述前盖侧壁112抵接固定的后盖侧壁122；更优的，所述前盖侧壁112远离所述发声单体2的外侧面1121与所述后盖侧壁122远离所述发声单体2的外侧面1221平齐，有效提高了所述扬声器箱100外侧的整体平整程度。本实施方式中，所述前盖11通过所述前盖侧壁112与所述后盖的所述后盖侧壁122焊接形成固定，前盖11与后盖12相对于现有技术中的塑料结构可设计更薄，且固定强度更可靠。
需要说明的是，所述收容台阶14由所述前盖11和所述后盖12弯折凹陷并共同围成，所述灌粉孔140同时贯穿所述前盖11和所述后盖12设置。
进一步的，所述收容台阶14由所述前盖侧壁112和所述后盖侧壁122共同弯折凹陷围成，所述灌粉孔140同时贯穿所述前盖侧壁112和所述后盖侧壁122设置。
更具体的，所述前盖侧壁112凹陷形成第一台阶113，所述第一台阶113包括由所述前盖侧壁112分别向靠近所述发声单体2的方向弯折延伸且间隔设置的两个第一连接壁1131以及与所述前盖侧壁112间隔设置并与两个所述第一连接壁1131连接的第一底壁1132，所述第一底壁1132设有贯穿其上的第一弧形孔1130；所述后盖侧壁122凹陷形成第二台阶123，所述第二台阶123包括由所述后盖侧壁122分别向靠近所述发声单体2的方向弯折延伸且间隔设置的两个第二连接壁1231以及与所述后盖侧壁122间隔设置并与两个所述第二连接壁1231连接的第二底壁1232，所述第二底壁1232设有贯穿其上的第二弧形孔1230。当所前盖11和所述后盖12组配在一起时，所述第一台阶113和所述第二台阶123共同构成所述壳体1的收容台阶14，所述第一连接壁1131与所述第二连接壁1231连接且两者相互匹配对应设置，所述第一底壁1132与所述第二底壁1232连接且两者相互匹配对应设置，所述第一弧形孔1130与所述第二弧形孔1230共同组配形成所述灌粉孔140，所述密封盖4同时盖设固定于所述第一底壁1132与所述第二底壁1232；此时，更优的，所述密封盖4远离所述发声单体2的外侧面41与该侧的所述前盖侧壁112的外侧面1121和所述后盖侧壁122的外侧面1221平齐。当然，在其他实施方式中，收容台阶仅由前盖或后盖设置也是可行的，在此不再一一赘述。
所述支架3与所述前盖本体111形成固定连接，具体的，所述支架3包括与所述前盖11密封固定的呈环状的支架本体31、形成于所述支架本体31的内周缘的定位台阶32以及由所述支架本体31延伸形成的具有导声通道30的导声部33。
所述发声单体2设有所述振膜21的一侧支撑密封固定于所述支架本体31并与所述前盖11间隔，所述发声单体2、所述支架3和所述前盖11共同围成前声腔101，所述导声部33抵接于所述壳体1并完全覆盖所述出声口110，所述导声通道30将所述前声腔101与所述出声口13连通以形成所述扬声器箱100的侧发声结构。
所述定位台阶32由所述支架本体31的内周缘沿垂直所述振动方向凹陷形成，所述导声部33由所述支架本体31的外侧沿垂直所述振动方向凸出延伸形成，所述发声单体2支撑于所述定位台阶32远离所述前盖主体111一侧，所述导声部33抵接于所述前盖侧壁112。所述支架本体31部分环绕所述发声单体2的周侧设置并与所述发声单体2形成密封固，以使得后声腔102形成密闭空间，用以改善低频声学性能。
为进一步改善扬声器件100的低频声学性能，所述扬声器箱100还包括位于所述后声腔102内的透气隔离件5，所述透气隔离件5贴设于所述发声单体2并将所述发声单体2从所述后声腔102内分隔，从而使得后声腔102内可填充吸音材料。
具体的，所述透气隔离件5包括与所述后盖12间隔相对并贴合于所述发声单体1的隔离件本体51、由所述隔离件本体51的周缘向所述支架3方向弯折延伸的隔离件延伸部52以及由所述隔离件延伸部52远离所述隔离件本体51的一端弯折延伸的隔离件固定部53，可向靠近前盖侧壁112的方向弯折延伸，也可向远离前盖侧壁112的方向弯折延伸。所述隔离件延伸部52与所述壳体1间隔设置，所述隔离件固定部52固定于所述支架本体31靠近所述后盖12的一侧。所述透气隔离件5、所述支架3、所述前盖11及所述后盖12共同围成灌粉空间，所述灌粉空间用于填充吸音材料，比如吸音颗粒、吸音棉等，具体的，在实际装配过程中，通过所述灌粉孔1120将吸音材料填充于所述灌粉空间内，所述密封盖4将所述吸音材料封装于所述灌粉空间内。
更优的，所述辅助声腔103也填充吸音材料，更进一步地优化低频声学性能。
所述扬声器箱100还包括将所述发声单体2与外界电信号连接的导电件6。本实施方式中，所述导电件6包括支撑固定于所述支架本体31靠近所述后盖12一端的导电件本体61、由所述导电件本体61的两端向所述发声单体2方向延伸并与所述发声单体2固定电连接的连接臂62以及由所述导电件本体61向远离所述发声单体2方向延伸并贯穿所述壳体1的延伸臂63。本实施方式中，所述延伸臂63同时贯穿所述前盖侧壁112及所述后盖侧壁122，所述支架本体31与所述导电件本体61相对的位置凹陷形成收容槽310，所述导电本体61收容于所述收容槽310并支撑于所述支架本体31，该结构方便装配，贯穿前盖侧壁112的位置及贯穿后盖侧壁122的位置可预先作为装配定位，提高装配效率。
为了使透气隔离件5与支架3固定时形成有效密封，确保灌粉空间内的吸音材料不会进入到发声单体2而影响其性能，本实施方式中，所述隔离件固定部53同时压设固定于所述导电件本体61及所述支架3的支架本体31。
与相关技术相比，本发明的扬声器箱中，前盖、后盖以及支架的组合结构，壳体为金属材料制成，则前盖、后盖可以采用较薄的钢片制成，该结构设置在确保壳体的结构强度的前提下，而相对于相关技术的全塑料壳体结构而言，壳体可设计得更薄，而通过塑料材料制成的支架与前盖组合，用以支撑固定发声单体，又能有效的装配发声单体，从而极大程度的提高了壳体内的腔体体积，有效的增加了发声单体与壳体围成的后声腔的体积，进而改善了扬声器箱的声学性能，特别是低频声学性能；另外，通过灌粉孔及密封盖的配合设置，使得往后声腔内填充吸音材料更加方便，提高了灌装吸音材料的效率。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。
Claims (8)
- 一种扬声器箱，其包括具有收容空间的壳体和固定收容于所述收容空间内的发声单体，所述发声单体包括用于振动发声的振膜，其特征在于，所述壳体由金属材料制成，所述壳体包括前盖以及盖设固定于所述前盖的后盖，所述前盖和所述后盖共同围成所述收容空间；所述扬声器箱还包括位于所述收容空间内的由塑料制成的支架，所述支架包括与所述前盖密封固定的呈环状的支架本体以及由所述支架本体延伸形成的具有导声通道的导声部，所述发声单体设有所述振膜的一侧支撑密封固定于所述支架本体并与所述前盖间隔，所述发声单体、所述支架和所述前盖共同围成前声腔，所述导声通道与所述前声腔连通；所述壳体设有贯穿其上的出声口，所述导声部抵接于所述壳体并完全覆盖所述出声口，所述导声通道与所述出声口连通，所述支架、所述发声单体、所述上盖及所述下盖共同围成密闭的后声腔；所述上盖和所述下盖分别向靠近所述发声单体的方向凹陷并共同围成的收容台阶，所述收容台阶设有同时贯穿所述上盖和所述下盖的灌粉孔；所述扬声器箱还包括盖设固定于所述收容台阶并完全覆盖所述灌粉孔的密封盖。
- 根据权利要求1所述的扬声器箱，其特征在于，所述密封盖远离所述发声单体的外侧面与该侧的所述壳体远离所述发声单体的外侧面平齐。
- 根据权利要求1所述的扬声器箱，其特征在于，所述前盖包括前盖本体以及由所述前盖本体的外周缘向所述后盖方向延伸的前盖侧壁；所述后盖包括与所述前盖本体相对间隔设置的后盖本体以及由的述后盖本体的周缘向所述前盖方向弯折延伸并与所述前盖侧壁抵接固定的后盖侧壁，所述收容台阶由所述前盖侧壁和所述后盖侧壁共同凹陷形成，所述灌粉孔同时贯穿所述前盖侧壁和所述后盖侧壁设置。
- 根据权利要求3所述的扬声器箱，其特征在于，所述支架与所述前盖本体形成固定连接；所述出声口贯穿所述前盖侧壁设置，所述导声部抵接于所述前盖侧壁。
- 根据权利要求3所述的扬声器箱，其特征在于，所述支架本体的内周缘形成定位台阶，所述发声单体支撑于所述定位台阶，所述支架本体部分环绕所述发声单体的周侧设置并与所述发声单体形成密封固定。
- 根据权利要求5所述的扬声器箱，其特征在于，所述扬声器箱还包括位于所述后声腔内的透气隔离件，所述透气隔离件贴设于所述发声单体并将所述发声单体从所述后声腔内分隔。
- 根据权利要求6所述的扬声器箱，其特征在于，所述透气隔离件包括与所述下盖板间隔相对并贴合于所述发声单体的隔离件本体、由所述隔离件本体的周缘向所述支架方向弯折延伸的隔离件延伸部以及由所述隔离件延伸部远离所述隔离件本体的一端弯折延伸的隔离件固定部；所述隔离件延伸部与所述壳体间隔设置，所述隔离件固定部固定于所述支架本体靠近所述下盖板的一侧；所述透气隔离件、所述支架及所述壳体共同围成灌粉空间，通过所述灌粉孔将吸音材料填充于所述灌粉空间内，所述密封盖将所述吸音材料封装于所述灌粉空间内。
- 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件，所述导电件包括支撑固定于所述支架本体靠近所述后盖一端的导电件本体、由所述导电件本体的两端向所述发声单体方向延伸并与所述发声单体固定电连接的连接臂以及由所述导电件本体向远离所述发声单体方向延伸并贯穿所述壳体的延伸臂；所述隔离件固定部同时压设固定于所述导电件本体及所述支架本体。
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