WO2022110463A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2022110463A1
WO2022110463A1 PCT/CN2020/140091 CN2020140091W WO2022110463A1 WO 2022110463 A1 WO2022110463 A1 WO 2022110463A1 CN 2020140091 W CN2020140091 W CN 2020140091W WO 2022110463 A1 WO2022110463 A1 WO 2022110463A1
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WO
WIPO (PCT)
Prior art keywords
side wall
sound
bent
wall
pair
Prior art date
Application number
PCT/CN2020/140091
Other languages
English (en)
French (fr)
Inventor
宋威
肖波
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声光电科技(常州)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, 瑞声光电科技(常州)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022110463A1 publication Critical patent/WO2022110463A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer
    • 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
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—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 sound-generating devices, in particular to a sound-generating device.
  • the current sound-generating device includes a housing having a accommodating space and a sound-generating unit accommodated in the housing.
  • the casing includes an upper casing and a lower casing which are assembled with each other to form the receiving space.
  • the lower casing usually includes a plastic frame and a metal casing wrapped on the plastic frame.
  • the sounding unit divides the receiving space into a front cavity and a rear cavity, and the lower shell, the sounding monomer and part of the upper shell together form the rear cavity. Therefore, the plastic frame occupies the space of the back cavity, so that the volume of the back cavity is reduced, and the space that can be filled with powder is reduced, thereby affecting the acoustic performance.
  • the purpose of the present invention is to provide a sound-generating device capable of increasing the volume of the powder-fillable space.
  • a sound-generating device comprising: a housing with a receiving space and a sound-generating unit accommodated in the containing space, the sound-generating unit including a magnetic circuit system and a vibration system with a diaphragm;
  • the casing includes an upper casing and a lower casing assembled with the upper casing to form the receiving space;
  • the lower casing includes a metal bottom wall, a plurality of a lower metal side wall and a sealing connector disposed between two adjacent lower metal side walls; one end of the lower metal side wall close to the upper shell is formed by bending and extending perpendicular to the vibration direction of the diaphragm A bent edge, the bent edge and the bottom surface of the sealing connector together form a sealing surface, and the sealing surface is connected with the upper casing to form a seal.
  • the metal bottom wall has a rectangular structure
  • the lower metal side walls are respectively formed by bending and extending from four sides of the metal bottom wall toward one end of the upper shell; the sealing connector is connected to the between two adjacent lower metal side walls; the bent edge is flush with the bottom surface of the sealing connector.
  • the metal bottom wall includes a pair of short sides and a pair of long sides that are relatively spaced apart
  • the lower metal side walls are a first side wall and a second side wall respectively connected to the pair of short sides and a pair of respectively
  • the third side wall and the fourth side wall are connected with a pair of long sides
  • the sealing connecting piece includes a pair of first connecting pieces and a pair of second connecting pieces, and a pair of the first connecting pieces are respectively connected to the first connecting pieces.
  • a side wall and a third side wall and a first side wall and a fourth side wall; the pair of second connecting pieces respectively connect the second side wall and the third side wall and the second side wall and the fourth side wall .
  • the first connecting member includes a corner portion, and a first fixing portion and a second fixing portion extending away from each other from opposite sides of the corner portion, the first fixing portion and the first side wall connected, the second fixing part is connected with the third side wall or the fourth side wall.
  • the second connecting piece includes a connecting body, a first bending arm and a second bending arm bent and extended from the connecting body toward the receiving space, the first bending arm and the first bending arm Two bending arms are arranged at intervals, the first bending arm is fixedly connected to the second side wall, the connecting body is fixedly connected to the third or fourth side wall, the second bending arm is fixedly connected into the receiving space.
  • the upper casing includes a top wall, an upper side wall bent and extended from the edge of the top wall, a sound outlet channel connected with the upper side wall, a bracket extending from the top wall toward the receiving space, and a bracket fixedly connected to the bracket a basin frame; the sound outlet channel is communicated with the accommodating space; the sealing surface is abutted and fixed with the upper side wall and the basin frame.
  • the diaphragm and the top wall are spaced apart to form a front cavity, the front cavity communicates with the sound outlet channel, and the diaphragm is fixed between the basin frame and the bracket.
  • the sounding unit, the upper casing and the lower casing together form a rear sound cavity
  • the sounding device further includes a ventilating spacer located in the rear sound cavity, and the ventilating spacer is attached to the sounding unit
  • the air-permeable spacer, the support, the upper shell and the lower shell together form a powder filling space for filling the sound-absorbing material.
  • the beneficial effect of the present invention is that: the above-mentioned sounding device bends the end of the metal side wall of the lower casing to form a folded edge to connect with the upper casing, and at the same time, only plastic parts are arranged at the four corners, and the upper casing is formed by inward folding.
  • the sealing surface of the body and the lower casing, and the plastic part reduces the volume, thereby increasing the volume of the powder filling space.
  • FIG. 1 is a perspective view of a sound-emitting device provided by a preferred embodiment of the present application.
  • FIG. 2 is an exploded view of the sounding device shown in FIG. 1 .
  • FIG. 3 is a perspective view of the lower case shown in FIG. 1 from another perspective.
  • FIG. 4 is a cross-sectional view taken along line A-A shown in FIG. 1 .
  • FIG. 5 is a cross-sectional view taken along line B-B shown in FIG. 1 .
  • a sound-generating device 100 provided by the present invention includes: a housing 1 having a receiving space and a sound-generating unit 101 accommodated in the housing.
  • the sound-generating unit 101 It includes a vibration system with a diaphragm 21 and a magnetic circuit system.
  • the casing 1 includes an upper casing 11 and a lower casing 12 , and the upper casing 11 and the lower casing 12 are assembled with each other to form a receiving space.
  • the lower casing 12 includes a substantially flat metal bottom wall 121 , a plurality of lower metal side walls 122 bent and extended from the edge of the metal bottom wall 121 toward the upper casing 11 and arranged at intervals, and a plurality of lower metal side walls 122 for connecting two adjacent lower casings.
  • the sealing connector 123 is made of plastic material, and is also embedded with a metal conductive member (not shown in the figure) for electrical connection. This arrangement facilitates the electrical connection between the external circuit and the sounding unit 101.
  • Each lower metal side wall One end of 122 close to the upper casing 11 is bent and extended along the vibration direction perpendicular to the diaphragm 21 to form a bent edge 1220 .
  • the bent edge 1220 and the bottom surface of the sealing connector 123 together form the sealing surface 124 .
  • the bent edge 1220 is flush with the bottom surface of the sealing connector 123 .
  • the metal bottom wall 121 includes a pair of long sides 1211 and a pair of short sides 1212 which are arranged at opposite intervals.
  • a powder filling hole 1210 is opened on the metal bottom wall 121 .
  • there are four lower metal side walls 122 which are a first side wall 1222 and a second side wall 1223 formed by bending and extending from a pair of short sides 1212 , and bending from a pair of long sides 1211 respectively.
  • the third side wall 1224 and the fourth side wall 1225 are formed by extension.
  • the first side wall 1222 and the second side wall 1223 are disposed opposite to each other, and both ends of the first side wall 1222 are spaced apart from one end of the third side wall 1224 and one end of the fourth side wall 1225 respectively. Two ends of the second side wall 1223 are spaced apart from the other end of the third side wall 1224 and the other end of the fourth side wall 1225, respectively.
  • the lower case 12 includes four sealing connectors 123 , a pair of which are respectively connected between the first side wall 1222 and the third side wall 1224 and between the first side wall 1222 and the fourth side wall 1225 .
  • the first connector 1231 and a pair of second connectors 1232 are connected between the second side wall 1223 and the third side wall 1224 and between the second side wall 1223 and the fourth side wall 1225 .
  • the first connecting member 1231 includes a first corner portion 1231a, and a first connecting portion 1231b and a second connecting portion 1231c extending away from each other from opposite ends of the first corner portion 1231a.
  • the first connecting portion 1231b is connected to the first side wall 1222
  • the second connecting portion 1231c is connected to the third side wall 1224 or the fourth side wall 1225 .
  • the second connecting member 1232 includes a connecting body 1232a and a first bending arm 1232b and a second bending arm 1232c which are bent and extended from the connecting body 1232a toward the receiving space.
  • the first bending arm 1232b is spaced apart from the second bending arm 1232c.
  • the connecting body 1232a is connected to the third side wall 1224 or the fourth side wall 1225, the first bending arm 1232b is connected to the second side wall 1222, and the second bending arm 1232c extends into the receiving space.
  • the upper casing 11 includes a substantially flat top wall 110 , an upper side wall 111 bent and extended from the top wall 110 , and a sound outlet channel 112 connected with the upper side wall 111 .
  • the sound outlet channel 112 communicates with the receiving space.
  • the upper casing 11 further includes a bracket 113 extending from the top wall 110 toward the lower casing 12 and a basin frame 114 fixedly connected with the bracket 113 , and the bracket 113 is substantially annular.
  • the upper casing 11 , the bracket 113 , the basin frame 114 and the lower casing 12 together form a rear acoustic cavity 70 .
  • the upper casing 11 and the sealing surface 124 of the lower casing 12 are abutted and fixed to seal the rear acoustic cavity 70 .
  • the basin frame 114 is substantially annular, and includes a pair of long-axis sides 1141 arranged at intervals and a pair of short-axis sides 1142 arranged at intervals.
  • the short axis side 1142 includes a first extension arm 1142 a extending in the vibration direction and a second extension arm 1142 b connected to the first extension arm 1142 a and extending toward the magnetic circuit system 30 .
  • the long-axis side 1141 of the basin frame 114 is in abutment with the bent edge 1220 of the third side wall 1224 and the bottom surface of the corresponding sealing connector 123 respectively; the bent edge 1220 of the first side wall 1222 and The bottom surface of the corresponding sealing connector 123 is abutted and fixed with the upper side wall 111 of the upper casing 11 ; The extension arm 1142b is abutted and fixed.
  • the vibration system 20 includes a vibrating membrane 21 fixed on the basin frame 114, a voice coil 23 that drives the vibrating membrane 21 to vibrate and sound, an elastic support 25 and a frame 27 that are spaced apart from the vibrating membrane 21.
  • One end of the elastic support member 25 is fixed to the basin frame 114 , the other end is fixed to the frame 27 , and the voice coil 23 is fixed to the frame 27 .
  • the voice coil 23 is electrically connected to an external circuit. After the voice coil 23 is energized, the voice coil 23 vibrates under the action of the magnetic field of the magnetic circuit system 30. At the same time, the voice coil 23 drives the The diaphragm 21 vibrates.
  • the diaphragm 21 is spaced apart from the top wall 110 to form a front acoustic cavity 50 , and the front acoustic cavity 50 communicates with the sound outlet channel 112 to allow sound to be transmitted.
  • the magnetic circuit system 30 includes a magnetic yoke 31 fixed on the basin frame 114 , a main magnetic part 33 and a plurality of auxiliary magnetic parts 34 fixed on the magnetic yoke 31 , and a plurality of the auxiliary magnetic parts 34
  • the magnetic gap 3A is formed around the main magnetic portion 33 and spaced apart from the main magnetic portion 33 .
  • the magnetic circuit system 30 further includes a clamping plate 37 fixed on the side of the main magnetic portion 33 and the secondary magnetic portion 34 away from the magnetic yoke 31 .
  • the yoke 31 is fixed to the second extension arm 1142 b of the basin frame 114 .
  • the magnetic circuit system 30 further includes a fixing member 38 sleeved on the clamping plate 37 , and the fixing member 38 is used for connecting the diaphragm 21 and the clamping plate 37 .
  • the sound-generating device 100 also includes a gas-permeable spacer 60 located in the rear acoustic cavity 70 .
  • the breathable spacer 60 is attached to the yoke 31 .
  • the air-permeable spacer 60 , the magnetic yoke 31 , the lower casing 12 , the bracket 113 and the upper casing 11 together form a powder filling space 31 , and the powder filling space 31 communicates with the powder filling hole 1210 .
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with “first”, “second” may expressly or implicitly include at least one of that feature.
  • plurality means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit.
  • installed may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between the two elements, unless otherwise specified limit.
  • a first feature "on” or “under” a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch.
  • the first feature being “above”, “over” and “above” the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature.
  • the first feature being “below”, “below” and “below” the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Manufacturing & Machinery (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

本发明提供了一种发声器件，其包括：具有收容空间的壳体以及收容于收容空间内的发声单体，发声单体包括磁路系统以及具有振膜的振动系统；壳体包括上壳体以及下壳体；下壳体包括金属底壁、自金属底壁弯折延伸形成且间隔设置的多个下金属侧壁以及设于相邻两下金属侧壁之间的密封连接件；下金属侧壁靠近上壳体的一端沿垂直于振膜的振动方向弯折延伸形成弯折边，弯折边与密封连接件的底面共同形成密封面，密封面与上壳体连接形成密封。上述发声器件将下壳体的金属侧壁端部弯折形成弯折边与上壳体连接，同时仅在四个角部位置设置塑胶件，通过内折形成上壳体和下壳体的密封面，且塑胶部分减少了体积，进而增大了灌粉空间的体积。

Description

发声器件 技术领域
本发明涉及发声装置的技术领域，特别是涉及一种发声器件。
 背景技术
目前的发声器件包括具有收容空间的壳体和收容于壳体内的发声单体。壳体包括相互组配以形成该收容空间的上壳体和下壳体。下壳体通常包括塑胶框体以及包覆在塑胶框体上的金属壳体。发声单体将收容空间分隔成前腔和后腔，下壳体、发声单体以及部分上壳体共同组成后腔。因此，塑胶框体占据后腔的空间使得后腔体积减小，可灌粉的空间变小，从而影响声学性能。
 因此，需要提供一种新的发声器件以克服上述缺陷。
 技术问题
本发明的目的在于提供一种能够增大可灌粉空间体积的发声器件。
 技术解决方案
本发明的技术方案如下：一种发声器件，包括：具有收容空间的壳体以及收容于所述收容空间内的发声单体，所述发声单体包括磁路系统以及具有振膜的振动系统；所述壳体包括上壳体以及与上壳体组装以形成所述收容空间的下壳体；所述下壳体包括金属底壁、自所述金属底壁弯折延伸形成且间隔设置的多个下金属侧壁以及设于相邻两下金属侧壁之间的密封连接件；所述下金属侧壁靠近所述上壳体的一端沿垂直于所述振膜的振动方向弯折延伸形成弯折边，所述弯折边与密封连接件的底面共同形成密封面，所述密封面与所述上壳体连接形成密封。
优选的，所述金属底壁呈矩形结构，所述下金属侧壁分别自所述金属底壁的四个侧边朝向所述上壳体的一端弯折延伸形成；所述密封连接件连接在相邻的两下金属侧壁之间；所述弯折边与所述密封连接件的底面平齐。
优选的，所述金属底壁包括相对间隔设置的一对短边和一对长边，所述下金属侧壁分别为分别与一对短边连接的第一侧壁和第二侧壁以及分别与一对长边连接的第三侧壁和第四侧壁，所述密封连接件包括一对第一连接件和一对第二连接件，一对所述第一连接件分别连接所述第一侧壁和第三侧壁以及第一侧壁和第四侧壁；所述一对第二连接件分别连接所述第二侧壁和第三侧壁以及第二侧壁和第四侧壁。
优选的，所述第一连接件包括拐角部以及自所述拐角部的相对两侧彼此背离延伸形成的第一固定部和第二固定部，所述第一固定部与所述第一侧壁连接，所述第二固定部与所述第三侧壁或第四侧壁连接。
优选的，所述第二连接件包括连接本体以及自所述连接本体朝向所述收容空间弯折延伸的第一弯折臂和第二弯折臂，所述第一弯折臂与所述第二弯折臂间隔设置，所述第一弯折臂与所述第二侧壁固定连接，所述连接本体与所述第三侧壁或第四侧壁固定连接，所述第二弯折臂伸入所述收容空间。
优选的，所述上壳体包括顶壁、自顶壁的边缘弯折延伸的上侧壁、与上侧壁连接的出声通道、自顶壁朝向收容空间延伸的支架以及与支架固定连接的盆架；所述出声通道与所述收容空间连通；所述密封面与所述上侧壁以及盆架抵接固定。
优选的，所述振膜与所述顶壁间隔设置以形成前腔，所述前腔与所述出声通道连通，所述振膜固定于所述盆架与支架之间。
优选的，所述发声单体与所述上壳体以及所述下壳体共同围成后声腔，所述发声器件还包括位于后声腔的透气隔离件，所述透气隔离件贴设于发声单体并与所述支架固定连接；所述透气隔离件、支架、上壳体以及下壳体共同围成灌粉空间，用于填充吸音材料。
 有益效果
本发明的有益效果在于：上述发声器件将下壳体的金属侧壁端部弯折形成弯折边与上壳体连接，同时仅在四个角部位置设置塑胶件，通过内折形成上壳体和下壳体的密封面，且塑胶部分减少了体积，进而增大了可灌粉空间的体积。
 附图说明
图1为本申请较佳实施例提供的发声器件的立体图。
图2为图1所示的发声器件的爆炸图。
图3为图1所示的下壳体另一视角的立体图。
图4为沿图1所示A-A线的剖视图。
图5为沿图1所示B-B线的剖视图。
 本发明的实施方式
下面结合附图和实施方式对本发明作进一步说明。
参阅图1至图5所示，在本实施例中，本发明提供的一种发声器件100，包括：具有收容空间的壳体1和收容于壳体中的发声单体101，发声单体101包括具有振膜21的振动系统以及磁路系统。
壳体1包括上壳体11和下壳体12，上壳体11与下壳体12相互组配形成收容空间。
下壳体12包括大致呈平板状的金属底壁121、自金属底壁121的边缘朝向上壳体11弯折延伸且间隔设置的多个下金属侧壁122以及用于连接相邻两个下金属侧壁122的多个密封连接件123。密封连接件123为塑胶材质，其还嵌设有用于电连接的金属导电件（图中未标号示出），如此设置，方便外部电路与发声单体101形成电连接，每个下金属侧壁122靠近上壳体11的一端沿垂直于振膜21的振动方向弯折延伸形成弯折边1220。弯折边1220与密封连接件123的底面共同形成密封面124。弯折边1220与密封连接件123的底面平齐。
在本实施例中，金属底壁121包括相对间隔设置的一对长边1211和一对短边1212。金属底壁121上开设有灌粉孔1210。本实施例中，设有4个下金属侧壁122，为分别自一对短边1212弯折延伸形成的第一侧壁1222和第二侧壁1223，以及分别自一对长边1211弯折延伸形成的第三侧壁1224和第四侧壁1225。第一侧壁1222与第二侧壁1223相对设置，第一侧壁1222的两端分别与第三侧壁1224的一端和第四侧壁1225一端间隔设置。第二侧壁1223的两端分别与第三侧壁1224的另一端和第四侧壁1225的另一端间隔设置。
在本实施例中，下壳体12包括4个密封连接件123，分别一对连接第一侧壁1222与第三侧壁1224之间以及第一侧壁1222与第四侧壁1225之间的第一连接件1231，以及，一对连接第二侧壁1223与第三侧壁1224之间以及第二侧壁1223与第四侧壁1225之间的第二连接件1232。
在本实施例中，第一连接件1231包括第一拐角部1231a以及自第一拐角部1231a的相对两端彼此背离延伸的第一连接部1231b和第二连接部1231c。第一连接部1231b与第一侧壁1222连接，第二连接部1231c与第三侧壁1224或第四侧壁1225连接。
第二连接件1232包括连接本体1232a以及连接本体1232a朝向收容空间弯折延伸的第一弯折臂1232b和第二弯折臂1232c。第一弯折臂1232b与第二弯折臂1232c间隔设置。连接本体1232a与第三侧壁1224或第四侧壁1225连接，第一弯折臂1232b与第二侧壁1222连接，第二弯折臂1232c伸入收容空间内。
上壳体11包括大致呈平板状顶壁110、自顶壁110弯折延伸的上侧壁111以及与上侧壁111连接的出声通道112。出声通道112与收容空间连通。
上壳体11还包括自所述顶壁110朝向所述下壳体12延伸的支架113以及与支架113固定连接的盆架114，支架113大致呈环状。上壳体11、支架113、盆架114以及下壳体12共同围成后声腔70。上壳体11与下壳体12的密封面124抵接固定以密封该后声腔70。
盆架114大致呈环状，包括一对间隔设置的长轴侧1141和一对间隔设置的短轴侧1142。短轴侧1142包括沿振动方向延伸的第一延伸臂1142a以及与第一延伸臂1142a连接并朝向磁路系统30延伸的第二延伸臂1142b。在本实施例中，盆架114的长轴侧1141分别与第三侧壁1224的折弯边1220及相应的密封连接件123的底面抵接固定；第一侧壁1222的折弯边1220及其相应的密封连接件123的底面与上壳体11的上侧壁111抵接固定；第二侧壁1223的折弯边1220及其相应的密封连接件123的底面与盆架114的第二延伸臂1142b抵接固定。
所述振动系统20包括固设于所述盆架114的振膜21、驱动所述振膜21振动发声的音圈23、与所述振膜21间隔设置的弹性支撑件25以及骨架27，所述弹性支撑件25的一端固定于所述盆架114，其另一端固定于所述骨架27，所述音圈23固定于所述骨架27。其中，所述音圈23与外部电路电连接，所述音圈23通电后，所述音圈23在所述磁路系统30磁场的作用下振动，与此同时，所述音圈23带动所述振膜21振动。振膜21与顶壁110间隔设置以形成前声腔50，前声腔50与出声通道112连通，以使声音传出。
所述磁路系统30包括固定于所述盆架114上的磁轭31以及固设于所述磁轭31上的主磁部33和多个副磁部34，多个所述副磁部34环绕所述主磁部33并与所述主磁部33间隔设置形成所述磁间隙3A。磁路系统30还包括固设于所述主磁部33和所述副磁部34背离所述磁轭31的一侧的夹板37。磁轭31固定于盆架114的第二延伸臂1142b。
磁路系统30还包括套设于夹板37的固定件38，固定件38用于连接振膜21与夹板37。
发声器件100还包括位于后声腔70的透气隔离件60。透气隔离件60贴设于磁轭31。透气隔离件60、磁轭31、下壳体12、支架113和上壳体11共同围成灌粉空间31，灌粉空间31与灌粉孔1210连通。
本申请中，由于将原来的下壳体的塑胶件部分减少，且利用下壳体的折弯边与上壳体连接以形成密封面，从而增大了可灌粉的后腔的体积。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (8)

  1. 一种发声器件，包括：具有收容空间的壳体以及收容于所述收容空间内的发声单体，所述发声单体包括磁路系统以及具有振膜的振动系统；其特征在于，所述壳体包括上壳体以及与上壳体组装以形成所述收容空间的下壳体；所述下壳体包括金属底壁、自所述金属底壁弯折延伸形成且间隔设置的多个下金属侧壁以及设于相邻两下金属侧壁之间的密封连接件；所述下金属侧壁靠近所述上壳体的一端沿垂直于所述振膜的振动方向弯折延伸形成弯折边，所述弯折边与密封连接件的底面共同形成密封面，所述密封面与所述上壳体连接形成密封。
  2. 根据权利要求1所述的发声器件，其特征在于，所述金属底壁呈矩形结构，所述下金属侧壁分别自所述金属底壁的四个侧边朝向所述上壳体的一端弯折延伸形成；所述密封连接件连接在相邻的两下金属侧壁之间；所述弯折边与所述密封连接件的底面平齐。
  3. 根据权利要求2所述的发声器件，其特征在于，所述金属底壁包括相对间隔设置的一对短边和一对长边，所述下金属侧壁分别为分别与一对短边连接的第一侧壁和第二侧壁以及分别与一对长边连接的第三侧壁和第四侧壁；
    所述密封连接件包括一对第一连接件和一对第二连接件，一对所述第一连接件分别连接所述第一侧壁和第三侧壁以及第一侧壁和第四侧壁；所述一对第二连接件分别连接所述第二侧壁和第三侧壁以及第二侧壁和第四侧壁。
  4. 根据权利要求3所述的发声器件，其特征在于，所述第一连接件包括拐角部以及自所述拐角部的相对两侧彼此背离延伸形成的第一固定部和第二固定部，所述第一固定部与所述第一侧壁连接，所述第二固定部与所述第三侧壁或第四侧壁连接。
  5. 根据权利要求3所述的发声器件，其特征在于，所述第二连接件包括连接本体以及自所述连接本体朝向所述收容空间弯折延伸的第一弯折臂和第二弯折臂，所述第一弯折臂与所述第二弯折臂间隔设置，所述第一弯折臂与所述第二侧壁固定连接，所述连接本体与所述第三侧壁或第四侧壁固定连接，所述第二弯折臂伸入所述收容空间。
  6. 根据权利要求1所述的发声器件，其特征在于，所述上壳体包括顶壁、自顶壁的边缘弯折延伸的上侧壁、与上侧壁连接的出声通道、自顶壁朝向收容空间延伸的支架以及与支架固定连接的盆架；所述出声通道与所述收容空间连通；所述密封面与所述上侧壁以及盆架抵接固定。
  7. 根据权利要求6所述的发声器件，其特征在于，所述振膜与所述顶壁间隔设置以形成前腔，所述前腔与所述出声通道连通，所述振膜固定于所述盆架与支架之间。
  8. 根据权利要求6所述的发声器件，其特征在于，所述发声单体与所述上壳体以及所述下壳体共同围成后声腔，所述发声器件还包括位于后声腔的透气隔离件，所述透气隔离件贴设于发声单体并与所述支架固定连接；所述透气隔离件、支架、上壳体以及下壳体共同围成灌粉空间，用于填充吸音材料。
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