WO2021174570A1 - Loudspeaker box - Google Patents
Loudspeaker box Download PDFInfo
- Publication number
- WO2021174570A1 WO2021174570A1 PCT/CN2020/078761 CN2020078761W WO2021174570A1 WO 2021174570 A1 WO2021174570 A1 WO 2021174570A1 CN 2020078761 W CN2020078761 W CN 2020078761W WO 2021174570 A1 WO2021174570 A1 WO 2021174570A1
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- WO
- WIPO (PCT)
- Prior art keywords
- diaphragm
- magnetic
- voice coil
- sound
- end cover
- Prior art date
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
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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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/127—Non-planar diaphragms or cones dome-shaped
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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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
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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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Definitions
- the invention relates to the field of sound and electricity, in particular to a speaker box used in portable electronic products.
- the speaker box includes a box body with an accommodating cavity and a sound device arranged in the box body, and a sound hole is penetrated through the box body.
- the sound emitting device in the related art only has one sound emitting surface, which is not conducive to the improvement of the sensitivity of the speaker box.
- the object of the present invention is to provide a speaker box, which can increase the effective vibration area, thereby improving the sensitivity of the speaker box.
- the present invention provides a loudspeaker box, which includes a box body with a containing cavity and a sound emitting device.
- the partition plate is provided with a monomer leakage hole communicating with the rear cavity
- the box body is provided with a sound outlet communicating with the front cavity
- the sound generating device is suspended in the front cavity
- the sounding device includes a basin frame abutting with the partition, a vibration system fixed on the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and emit sound.
- the body leakage hole communicates with the leakage hole
- the vibration system includes an upper diaphragm and a lower diaphragm that are respectively fixed on opposite sides of the basin frame and have opposite vibration directions, an upper voice coil that drives the upper diaphragm to vibrate and produce sound, The lower voice coil that drives the lower diaphragm to vibrate and emit sound, and the frame connecting the lower voice coil and the lower diaphragm, the upper diaphragm, the lower diaphragm and the basin frame are enclosed to form a housing
- a storage space for a magnetic circuit system comprising a splint fixed on the basin frame and a first magnetic part, a second magnetic part and a first magnetic part fixed on the side of the splint facing the upper diaphragm
- the second magnetic part is arranged around the first magnetic part and an inner magnetic gap is formed between the two
- the third magnetic part is arranged around the second magnetic part and an outer magnet is formed between the two
- the third magnetic part has a leakage
- the third magnetic part is composed of a plurality of third permanent magnets arranged around the second magnetic part, and two adjacent third permanent magnets are arranged at intervals, wherein two adjacent to the leakage hole The third permanent magnets are arranged at intervals to form the leakage channel.
- the second magnetic part is a second permanent magnet
- the second permanent magnet has a continuous ring structure.
- the frame includes a main body part connected to the lower diaphragm and a plurality of connection parts extending from the main body part to the splint and passing through the escape hole, the connection part and the Lower voice coil connection.
- the lower voice coil has a rectangular structure with rounded corners, the connecting portions are provided with four, and the four connecting portions are connected to the four rounded corners of the lower voice coil in a one-to-one correspondence.
- the vibration system further includes an upper dome and a lower dome arranged in the receiving space, and the upper dome is respectively connected to the upper diaphragm and the upper sound at two opposite sides in the vibration direction.
- the ring is connected, and the opposite sides of the lower dome in the vibration direction are respectively connected with the main body and the lower diaphragm.
- a first pole core is fixedly arranged on the side of the first magnetic part away from the splint, and a second pole core is fixedly arranged on the side of the second magnetic part away from the splint.
- a third pole core is fixedly arranged on the side of the three magnetic part away from the clamping plate, and the clamping plate is a clamping plate made of soft magnetic material.
- the sound emitting device further includes an upper end cover and a lower end cover, the upper diaphragm is sandwiched between the basin frame and the upper end cover, and the upper end cover is provided for the upper diaphragm to emit sound outwards.
- the lower diaphragm is sandwiched between the basin frame and the lower end cover, and the lower end cover has a second sound hole for the lower diaphragm to emit sound outward.
- the box body includes an upper bottom surface opposite to the upper end cover and spaced apart, and a lower bottom surface opposite to the lower end cover and spaced apart, and a plurality of second bottom surfaces supporting the upper end cover are provided on the upper bottom surface
- a cushion block, a plurality of second cushion blocks supporting the lower end cover are arranged on the lower bottom surface.
- the speaker box of the present invention arranges the upper diaphragm and the lower diaphragm to vibrate in opposite directions and is driven by the upper voice coil and the lower voice coil respectively, and the sound is generated.
- the device is arranged to be suspended in the front cavity, so that the sound generated by the vibration of the upper diaphragm and the lower diaphragm is transmitted to the outside of the speaker box through the sound outlet, so that the effective vibration area of the speaker box It is greatly improved to improve the sensitivity of the speaker box; at the same time, by setting the magnetic circuit system to have the inner magnetic gap, the outer magnetic gap, the escape hole and the leakage channel, the upper diaphragm and When the lower diaphragm vibrates, the airflow in the accommodation space can circulate with the rear cavity through the leakage hole and the monomer leakage hole.
- the upper voice coil and the lower voice coil are inserting the upper voice coil and the lower voice coil into the inner magnetic gap and the outer magnetic gap of the magnetic circuit system, respectively, the upper diaphragm and the lower diaphragm share the same
- the magnetic circuit system improves the utilization rate of the magnetic circuit.
- Figure 1 is a perspective view of a preferred embodiment of the speaker box of the present invention.
- Figure 2 is a cross-sectional view of the speaker box shown in Figure 1 along the A-A direction;
- Figure 3 is a cross-sectional view of the speaker box shown in Figure 1 along the B-B direction;
- Fig. 4 is a schematic diagram of the structure of the sound emitting device in the speaker box shown in Fig. 2;
- FIG. 5 is a schematic diagram of the structure of the sound emitting device in the speaker box shown in FIG. 3;
- Fig. 6 is a three-dimensional exploded view of the sound generating device shown in Fig. 5;
- FIG. 7 is a schematic structural view of a part of the structure of the vibration system in the sound generating device shown in FIG. 6 after being assembled;
- FIG. 8 is a schematic structural diagram of part of the structure of the sound generating device shown in FIG. 6 after being assembled;
- Fig. 9 is a schematic structural diagram of the part of the structure shown in Fig. 8 with the splint removed.
- the speaker box includes a box body 100 having an accommodating cavity 100A and a sound emitting device 200 arranged in the box body 100.
- the box body 100 is provided with a partition 101 that divides the containing chamber 100A into a front chamber 100B and a rear chamber 100C, and the partition 101 is provided with a monomer leakage hole 102 that communicates with the rear chamber 100C.
- the box body 100 is provided with a sound outlet 103 communicating with the front cavity 100B, and the sound emitting device 200 is suspended in the front cavity 100B.
- the sound generating device 200 includes a basin frame 1 abutting against the partition 101, a vibration system 3 fixed to the basin frame 1, and a magnetic circuit system 5 that drives the vibration system 3 to vibrate and produce sound.
- the basin frame 1 is provided with a leak hole 1A communicating with the monomer leak hole 102 through it.
- the magnetic circuit system 5 includes a splint 51 fixed on the basin frame 1 and a first magnetic portion 52, a second magnetic portion 53 and a first magnetic portion 52 fixed on the side of the splint 51 facing the upper diaphragm 31 described later.
- the third magnetic part 54, the second magnetic part 53 is arranged around the first magnetic part 52 and an inner magnetic gap 5A is formed between the two
- the third magnetic part 54 is arranged around the second magnetic part 53 and
- An outer magnetic gap 5B is formed between the two
- the third magnetic portion 54 has a leakage passage 54A connecting the outer magnetic gap 5B and the leakage hole 1A
- the clamping plate 51 is at a position facing the outer magnetic gap 5B
- An escape hole 511 is formed through the upper part, and the escape hole 511 is used to avoid the frame 36 described later.
- the first magnetic portion 52 is a first permanent magnet. It is understandable that, in other embodiments, the first magnetic portion 52 may also be formed by superimposing two, three, etc., first permanent magnets along the vibration direction X, and there is also a gap between two adjacent first permanent magnets. The pole core can be clamped.
- the second magnetic portion 53 is a second permanent magnet, and the second permanent magnet has a continuous ring structure. It is understandable that in other embodiments, the second magnetic portion 53 may also be configured to be composed of a plurality of second permanent magnets surrounding the first magnetic portion, and two adjacent second permanent magnets Or, the second magnetic portion 53 may also be formed by superimposing two or three second permanent magnets in a continuous ring structure along the vibration direction X, and two adjacent second permanent magnets A pole core can also be sandwiched between.
- the third magnetic portion 54 is composed of a plurality of third permanent magnets arranged around the second magnetic portion 53, and two adjacent third permanent magnets are arranged at intervals. Wherein, the two third permanent magnets adjacent to the leakage hole 1A are spaced apart to form the leakage passage 54A. It can be understood that, in other embodiments, the third magnetic portion 54 may also be a second permanent magnet in a ring structure. Accordingly, the position of the second permanent magnet corresponding to the leakage hole needs to be A leakage channel connecting the external magnetic gap and the leakage hole is opened.
- the first permanent magnet, the second permanent magnet, and the third permanent magnet mentioned above are usually made of magnetic steel. It is understandable that the first permanent magnet, the second permanent magnet, and the third permanent magnet can also be natural magnets.
- a first pole core 55 is fixed on the side of the first magnetic portion 52 away from the clamping plate 51, and the second magnetic portion 53 is away from the clamping plate 51.
- a second pole core 56 is fixed on one side, and a third pole core 57 is fixed on the side of the third magnetic portion 54 away from the clamping plate 51.
- the clamping plate 51 is a clamping plate made of soft magnetic material.
- the inner magnetic gap 5A and the outer magnetic gap 5B can be effectively increased
- the magnetic flux inside can improve the acoustic performance of the sound generating device 200, and at the same time, it is also conducive to the light and thin design of the sound generating device 200.
- first pole core 55, the second pole core 56, and the third pole core 57 are located in the same horizontal plane.
- the vibration system 3 includes an upper diaphragm 31, a lower diaphragm 33, an upper voice coil 34, a lower voice coil 35, and a frame 36.
- the upper diaphragm 31 and the lower diaphragm 33 are respectively fixed to the basin frame 1.
- the vibration directions of the upper diaphragm 31 and the lower diaphragm 33 are opposite, and the upper diaphragm 31, the lower diaphragm 33, and the basin frame 1 are enclosed to form a receiving space 200A,
- the magnetic circuit system 5 is housed in the accommodating space 200A, the upper voice coil 34 drives the upper diaphragm 31 to vibrate and produce sound, the lower voice coil 35 drives the lower diaphragm 33 to vibrate and produce sound, and the skeleton 36 connects the lower voice coil 35 and the lower diaphragm 33.
- the upper voice coil 34 is inserted into the inner magnetic gap 5A
- the lower voice coil 35 is inserted into the outer magnetic gap 5B
- the avoiding hole 511 of the clamping plate 51 avoids the skeleton 36.
- the upper voice coil 34 and the lower voice coil 35 are connected to an external power source through a flexible circuit board (not shown). After the upper voice coil 34 is energized, under the magnetic force of the magnetic circuit system 5, The upper diaphragm 31 vibrates along with the upper voice coil 34; after the lower voice coil 35 is energized, under the magnetic force of the magnetic circuit system 5, the lower diaphragm 33 and the skeleton 36 follow the The voice coil 35 will vibrate together.
- the sound emitting device 200 is arranged to be suspended In the front cavity 100B, the sound generated by the vibration of the upper diaphragm 31 and the lower diaphragm 33 is transmitted to the outside of the speaker box through the sound outlet 103, so that the effective vibration area of the speaker box is greatly increased In order to improve the sensitivity of the speaker box; at the same time, because the magnetic circuit system 5 has the inner magnetic gap 5A, the outer magnetic gap 5B, the escape hole 511 and the leakage channel 54A, the upper diaphragm 31 When the lower diaphragm 33 vibrates, the airflow in the receiving space 200A can circulate with the rear cavity 100C through the leakage hole 1A and the monomer leakage hole 102.
- the upper voice coil 34 and the lower voice coil 35 are inserted into the inner magnetic gap 5A and the outer magnetic gap 5B of the magnetic circuit system 5, respectively, the upper diaphragm 31 and the The lower diaphragm 33 shares the same magnetic circuit system, which improves the utilization rate of the magnetic circuit.
- the opposite vibration directions of the upper diaphragm 31 and the lower diaphragm 33 mean that the instantaneous vibration directions are opposite. Specifically, when the upper diaphragm 31 vibrates in a direction away from the magnetic circuit system 5, the lower diaphragm 33 also vibrates in a direction away from the magnetic circuit system 5; the upper diaphragm 31 vibrates in a direction closer to the magnetic circuit system 5. When the circuit system 5 vibrates, the lower diaphragm 33 also vibrates in a direction close to the magnetic circuit system 5.
- the frame 36 includes a main body portion 361 connected to the lower diaphragm 33 and a plurality of connecting portions 363 extending from the main body portion 361 toward the splint 51 and passing through the escape holes 511.
- the connection The part 363 is connected to the lower voice coil 35.
- the structure of the frame 36 with multiple connecting portions 363 can avoid the splint 51 to a greater extent, so that the splint 51 can be designed to utilize more sufficient magnetic permeability to increase the outer magnetic gap 5B. The magnetic flux, thereby improving the vibration performance of the lower diaphragm 33.
- the main body portion 361 has a flat plate shape.
- the flat main body 361 can strengthen the connection strength between the frame 36 and the lower diaphragm 33. It can be understood that the implementation of the main body portion 361 is not limited to this; for example, in other embodiments, the main body portion 361 may also be arranged in a continuous ring structure.
- the upper voice coil 34 and the lower voice coil 35 have a rounded rectangular structure
- the connecting portions 363 are provided with four, and the four connecting portions 363 correspond to each other one to one.
- the flexible circuit board is electrically welded to the rounded positions of the upper voice coil 34 and the lower voice coil 35 respectively.
- the vibration system 3 further includes an upper dome 37 and a lower dome 38 arranged in the receiving space 200A, and the upper dome 37 is opposite to each other on opposite sides of the vibration direction X.
- the upper diaphragm 31 is connected to the upper voice coil 34
- the lower dome 38 is connected to the main body 361 and the lower diaphragm 33 on opposite sides along the vibration direction X, respectively.
- the upper dome 37 and the lower dome 38 may also be arranged outside the receiving space 200A, and the upper diaphragm 31 is opposite to each other in the vibration direction X.
- the sides are respectively connected to the upper voice coil 34 and the upper dome 37, and the lower diaphragm 33 is respectively connected to the lower dome 38 and the main body 361 along the opposite sides of the vibration direction X.
- the sound emitting device 200 further includes an upper end cover 7 and a lower end cover 9, and the upper diaphragm 31 is sandwiched between the basin frame 1 and the upper end cover 7.
- the upper end cover 7 has a first sounding hole 71 for the upper diaphragm 31 to emit sound outward
- the lower diaphragm 33 is sandwiched between the basin frame 1 and the lower end cover 9, and the lower end
- the cover 9 has a second sound hole 91 for the lower diaphragm 33 to sound outward.
- the arrangement of the upper end cover 7 and the lower end cover 9 can better fix the upper diaphragm 31 and the lower diaphragm 33 on the basin frame 1.
- the box body 100 includes an upper bottom surface 104 opposite to the upper end cover 7 and spaced apart, and a lower bottom surface 105 opposite to the lower end cover 9 and spaced apart.
- the upper bottom surface 104 is provided with A plurality of first cushion blocks 106 supporting the upper end cover 7, and a plurality of second cushion blocks 107 supporting the lower end cover 9 are provided on the lower bottom surface 105.
- the sound generating device 200 is suspended in the front cavity 100B through the supporting action of the plurality of first pad blocks 106 and the plurality of second pad blocks 107.
- the first spacer block 106 and the second spacer block 107 are integrally formed with the box body 100. It is understood that, in other embodiments, the first spacer block 106 may also It is a cushion block fixed on the upper bottom surface 104, and the second cushion block 107 may also be a cushion block fixed on the lower bottom surface 105.
- the speaker box of the present invention is provided by setting the upper diaphragm 31 and the lower diaphragm 33 to have opposite vibration directions and are driven by the upper voice coil 34 and the lower voice coil 35, respectively, and
- the sound device 200 is arranged to be suspended in the front cavity 100B, so that the sound generated by the vibration of the upper diaphragm 31 and the lower diaphragm 33 is transmitted to the outside of the speaker box through the sound outlet 103 , So that the effective vibration area of the speaker box is greatly increased to improve the sensitivity of the speaker box;
- the magnetic circuit system 5 is configured to have the inner magnetic gap 5A, the outer magnetic gap 5B, and the escape hole 511 And the leakage passage 54A, so that when the upper diaphragm 31 and the lower diaphragm 33 vibrate, the airflow in the accommodation space 200A can pass through the leakage hole 1A and the monomer leakage hole 102 and the The back cavity 100C circulates.
- the upper diaphragm 31 and The lower diaphragm 33 shares the magnetic circuit system 5, thereby improving the utilization of the magnetic circuit.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The present invention provides a loudspeaker box capable of increasing an effective vibration area. The loudspeaker box comprises a box body having an accommodation cavity and a sound production device; the accommodation cavity is divided into a front cavity and a rear cavity by means of a partition plate, and a single leakage hole in communication with the rear cavity is provided on the partition plate; a sound output hole in communication with the front cavity is provided on the box body in a penetrating manner; the sound production device is suspended within the front cavity, and the sound production device comprises a basket, a vibration system and a magnetic circuit system; a leakage hole in communication with the single leakage hole is provided on the basket; the vibration system comprises the basket, an upper vibration diaphragm and a lower vibration diaphragm which are opposite in vibration directions, an upper voice coil, a lower voice coil and a framework connecting the lower voice coil and the lower vibration diaphragm; the magnetic circuit system comprises a clamping plate, a first magnetic portion, a second magnetic portion forming an inner magnetic gap with the first magnetic portion, and a third magnetic portion forming an outer magnetic gap with the second magnetic portion, and the third magnetic portion is provided with a leakage channel in communication with the outer magnetic gap and the leakage hole; the upper voice coil is inserted into the inner magnetic gap, and the lower voice coil is inserted into the outer magnetic gap; and avoidance holes for avoiding the framework are provided on the clamping plate.
Description
本发明涉及声电领域,尤其涉及一种运用于便携式电子产品的扬声器箱。The invention relates to the field of sound and electricity, in particular to a speaker box used in portable electronic products.
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.
扬声器箱包括具有容纳腔的箱体及设于所述箱体内的发声器件,所述箱体上贯穿设有出声孔。相关技术中的发声器件仅具有一个发声面,从而不利于扬声器箱灵敏度的提高。The speaker box includes a box body with an accommodating cavity and a sound device arranged in the box body, and a sound hole is penetrated through the box body. The sound emitting device in the related art only has one sound emitting surface, which is not conducive to the improvement of the sensitivity of the speaker box.
因此,实有必要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.
本发明的目的在于提供一种扬声器箱,该扬声器箱可以提高有效振动面积,从而可以提高扬声器箱的灵敏度。The object of the present invention is to provide a speaker box, which can increase the effective vibration area, thereby improving the sensitivity of the speaker box.
为了达到上述目的,本发明提供了一种扬声器箱,包括具有容纳腔的箱体及发声器件,所述箱体内设有将所述容纳腔分隔为前腔和后腔的隔板,所述隔板上贯穿设有与所述后腔连通的单体泄露孔,所述箱体上贯穿设有与所述前腔连通的出声孔,所述发声器件悬置于所述前腔内,所述发声器件包括与所述隔板抵接的盆架以及固持于所述盆架的振动***和驱动所述振动***振动发声的磁路***,所述盆架上贯穿设有与所述单体泄露孔连通的泄露孔,所述振动***包括分别固定于所述盆架的相对两侧且振动方向相反的上振膜和下振膜、驱动所述上振膜振动发声的上音圈、驱动所述下振膜振动发声的下音圈及连接所述下音圈和所述下振膜的骨架,所述上振膜、所述下振膜及所述盆架围合形成***述磁路***的收容空间,所述磁路***包括固持于所述盆架的夹板以及固设于所述夹板朝向所述上振膜的一侧上的第一磁部、第二磁部及第三磁部,所述第二磁部环绕所述第一磁部设置且二者之间形成内磁间隙,所述第三磁部环绕所述第二磁部设置且二者之间形成外磁间隙,所述第三磁部具有连通所述外磁间隙和所述泄露孔的泄露通道,其中,所述上音圈***所述内磁间隙内,所述下音圈***所述外磁间隙内,所述夹板正对所述外磁间隙的位置上贯穿设有避让所述骨架的避让孔。 In order to achieve the above-mentioned object, the present invention provides a loudspeaker box, which includes a box body with a containing cavity and a sound emitting device. The partition plate is provided with a monomer leakage hole communicating with the rear cavity, the box body is provided with a sound outlet communicating with the front cavity, and the sound generating device is suspended in the front cavity, The sounding device includes a basin frame abutting with the partition, a vibration system fixed on the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and emit sound. The body leakage hole communicates with the leakage hole, and the vibration system includes an upper diaphragm and a lower diaphragm that are respectively fixed on opposite sides of the basin frame and have opposite vibration directions, an upper voice coil that drives the upper diaphragm to vibrate and produce sound, The lower voice coil that drives the lower diaphragm to vibrate and emit sound, and the frame connecting the lower voice coil and the lower diaphragm, the upper diaphragm, the lower diaphragm and the basin frame are enclosed to form a housing A storage space for a magnetic circuit system, the magnetic circuit system comprising a splint fixed on the basin frame and a first magnetic part, a second magnetic part and a first magnetic part fixed on the side of the splint facing the upper diaphragm Three magnetic parts, the second magnetic part is arranged around the first magnetic part and an inner magnetic gap is formed between the two, and the third magnetic part is arranged around the second magnetic part and an outer magnet is formed between the two The third magnetic part has a leakage passage connecting the outer magnetic gap and the leakage hole, wherein the upper voice coil is inserted into the inner magnetic gap, and the lower voice coil is inserted into the outer magnetic gap Inside, an escape hole for avoiding the skeleton is penetrated at a position of the splint facing the outer magnetic gap.
优选地,所述第三磁部由环绕所述第二磁部设置的多个第三永磁体构成,且相邻两所述第三永磁体间隔设置,其中,与所述泄露孔相邻的两个所述第三永磁体间隔设置形成所述泄露通道。 Preferably, the third magnetic part is composed of a plurality of third permanent magnets arranged around the second magnetic part, and two adjacent third permanent magnets are arranged at intervals, wherein two adjacent to the leakage hole The third permanent magnets are arranged at intervals to form the leakage channel.
优选地,所述第二磁部为第二永磁体,所述第二永磁体呈连续的环状结构。 Preferably, the second magnetic part is a second permanent magnet, and the second permanent magnet has a continuous ring structure. To
优选地,所述骨架包括与所述下振膜连接的主体部及自所述主体部向所述夹板方向延伸形成并穿过所述避让孔的多个连接部,所述连接部与所述下音圈连接。 Preferably, the frame includes a main body part connected to the lower diaphragm and a plurality of connection parts extending from the main body part to the splint and passing through the escape hole, the connection part and the Lower voice coil connection.
优选地,所述下音圈呈圆角矩形结构,所述连接部设有四个,且四个所述连接部一一对应地连接于所述下音圈的四个圆角处。Preferably, the lower voice coil has a rectangular structure with rounded corners, the connecting portions are provided with four, and the four connecting portions are connected to the four rounded corners of the lower voice coil in a one-to-one correspondence.
优选地,所述振动***还包括设于所述收容空间内的上球顶和下球顶,所述上球顶沿振动方向上的相对两侧分别与所述上振膜和所述上音圈连接,所述下球顶沿振动方向上的相对两侧分别与所述主体部和所述下振膜连接。Preferably, the vibration system further includes an upper dome and a lower dome arranged in the receiving space, and the upper dome is respectively connected to the upper diaphragm and the upper sound at two opposite sides in the vibration direction. The ring is connected, and the opposite sides of the lower dome in the vibration direction are respectively connected with the main body and the lower diaphragm.
优选地,所述第一磁部远离所述夹板的一侧上固设有第一极芯,所述第二磁部远离所述夹板的一侧上固设有第二极芯,所述第三磁部远离所述夹板的一侧上固设有第三极芯,所述夹板为软磁材料制成的夹板。Preferably, a first pole core is fixedly arranged on the side of the first magnetic part away from the splint, and a second pole core is fixedly arranged on the side of the second magnetic part away from the splint. A third pole core is fixedly arranged on the side of the three magnetic part away from the clamping plate, and the clamping plate is a clamping plate made of soft magnetic material.
优选地,所述发声器件还包括上端盖和下端盖,所述上振膜夹设于所述盆架和所述上端盖之间,所述上端盖具有用于所述上振膜向外发声的第一发声孔,所述下振膜夹设于所述盆架和所述下端盖之间,所述下端盖具有用于所述下振膜向外发声的第二发声孔。Preferably, the sound emitting device further includes an upper end cover and a lower end cover, the upper diaphragm is sandwiched between the basin frame and the upper end cover, and the upper end cover is provided for the upper diaphragm to emit sound outwards. The lower diaphragm is sandwiched between the basin frame and the lower end cover, and the lower end cover has a second sound hole for the lower diaphragm to emit sound outward.
优选地,所述箱体包括与所述上端盖相对且间隔设置的上底面及与所述下端盖相对且间隔设置的下底面,所述上底面上设有支撑所述上端盖的多个第一垫块,所述下底面上设有支撑所述下端盖的多个第二垫块。Preferably, the box body includes an upper bottom surface opposite to the upper end cover and spaced apart, and a lower bottom surface opposite to the lower end cover and spaced apart, and a plurality of second bottom surfaces supporting the upper end cover are provided on the upper bottom surface A cushion block, a plurality of second cushion blocks supporting the lower end cover are arranged on the lower bottom surface.
与相关技术相比,本发明的扬声器箱通过将所述上振膜和所述下振膜设置成振动方向相反并分别由所述上音圈和所述下音圈驱动,且将所述发声器件设置成悬置于所述前腔内,使得所述上振膜和所述下振膜振动发出的声音通过所述出声孔传至所述扬声器箱外,从而使得扬声器箱的有效振动面积大幅提高以提高扬声器箱的灵敏度;同时,通过将所述磁路***设置成具有所述内磁间隙、所述外磁间隙、所述避让孔及所述泄露通道,使得所述上振膜和所述下振膜振动时,所述收容空间内的气流能通过所述泄露孔和所述单体泄露孔与所述后腔流通。此外,还通过将所述上音圈和所述下音圈分别***所述磁路***的所述内磁间隙和所述外磁间隙内,使得所述上振膜和所述下振膜共用所述磁路***,从而提高了磁路利用率。Compared with the related art, the speaker box of the present invention arranges the upper diaphragm and the lower diaphragm to vibrate in opposite directions and is driven by the upper voice coil and the lower voice coil respectively, and the sound is generated. The device is arranged to be suspended in the front cavity, so that the sound generated by the vibration of the upper diaphragm and the lower diaphragm is transmitted to the outside of the speaker box through the sound outlet, so that the effective vibration area of the speaker box It is greatly improved to improve the sensitivity of the speaker box; at the same time, by setting the magnetic circuit system to have the inner magnetic gap, the outer magnetic gap, the escape hole and the leakage channel, the upper diaphragm and When the lower diaphragm vibrates, the airflow in the accommodation space can circulate with the rear cavity through the leakage hole and the monomer leakage hole. In addition, by inserting the upper voice coil and the lower voice coil into the inner magnetic gap and the outer magnetic gap of the magnetic circuit system, respectively, the upper diaphragm and the lower diaphragm share the same The magnetic circuit system improves the utilization rate of the magnetic circuit.
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:In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, among which:
图1为本发明扬声器箱一较佳实施例的立体图;Figure 1 is a perspective view of a preferred embodiment of the speaker box of the present invention;
图2为图1所示扬声器箱沿A-A方向的剖示图;Figure 2 is a cross-sectional view of the speaker box shown in Figure 1 along the A-A direction;
图3为图1所示扬声器箱沿B-B方向的剖示图;Figure 3 is a cross-sectional view of the speaker box shown in Figure 1 along the B-B direction;
图4为图2所示扬声器箱中发声器件的结构示意图;Fig. 4 is a schematic diagram of the structure of the sound emitting device in the speaker box shown in Fig. 2;
图5为图3所示扬声器箱中发声器件的结构示意图;FIG. 5 is a schematic diagram of the structure of the sound emitting device in the speaker box shown in FIG. 3;
图6为图5所示发声器件的立体分解图;Fig. 6 is a three-dimensional exploded view of the sound generating device shown in Fig. 5;
图7为图6所示发声器件中振动***的部分结构组装后的结构示意图;FIG. 7 is a schematic structural view of a part of the structure of the vibration system in the sound generating device shown in FIG. 6 after being assembled;
图8为图6所示发声器件中部分结构组装后的结构示意图;FIG. 8 is a schematic structural diagram of part of the structure of the sound generating device shown in FIG. 6 after being assembled;
图9为图8所示部分结构去掉夹板后的结构示意图。Fig. 9 is a schematic structural diagram of the part of the structure shown in Fig. 8 with the splint removed.
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。The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
请结合参阅图1至图9,扬声器箱包括具有容纳腔100A的箱体100及设于所述箱体100内的发声器件200。Please refer to FIG. 1 to FIG. 9 in combination. The speaker box includes a box body 100 having an accommodating cavity 100A and a sound emitting device 200 arranged in the box body 100.
所述箱体100内设有将所述容纳腔100A分隔为前腔100B和后腔100C的隔板101,所述隔板101上贯穿设有与所述后腔100C连通的单体泄露孔102,所述箱体100上贯穿设有与所述前腔100B连通的出声孔103,所述发声器件200悬置于所述前腔100B内。The box body 100 is provided with a partition 101 that divides the containing chamber 100A into a front chamber 100B and a rear chamber 100C, and the partition 101 is provided with a monomer leakage hole 102 that communicates with the rear chamber 100C. The box body 100 is provided with a sound outlet 103 communicating with the front cavity 100B, and the sound emitting device 200 is suspended in the front cavity 100B.
所述发声器件200包括与所述隔板101抵接的盆架1以及固持于所述盆架1的振动***3和驱动所述振动***3振动发声的磁路***5。The sound generating device 200 includes a basin frame 1 abutting against the partition 101, a vibration system 3 fixed to the basin frame 1, and a magnetic circuit system 5 that drives the vibration system 3 to vibrate and produce sound.
所述盆架1上贯穿设有与所述单体泄露孔102连通的泄露孔1A。The basin frame 1 is provided with a leak hole 1A communicating with the monomer leak hole 102 through it.
所述磁路***5包括固持于所述盆架1的夹板51以及固设于所述夹板51朝向后述的上振膜31的一侧上的第一磁部52、第二磁部53及第三磁部54,所述第二磁部53环绕所述第一磁部52设置且二者之间形成内磁间隙5A,所述第三磁部54环绕所述第二磁部53设置且二者之间形成外磁间隙5B,所述第三磁部54具有连通所述外磁间隙5B和所述泄露孔1A的泄露通道54A,所述夹板51正对所述外磁间隙5B的位置上贯穿设有避让孔511,所述避让孔511用于避让后述的骨架36。The magnetic circuit system 5 includes a splint 51 fixed on the basin frame 1 and a first magnetic portion 52, a second magnetic portion 53 and a first magnetic portion 52 fixed on the side of the splint 51 facing the upper diaphragm 31 described later. The third magnetic part 54, the second magnetic part 53 is arranged around the first magnetic part 52 and an inner magnetic gap 5A is formed between the two, the third magnetic part 54 is arranged around the second magnetic part 53 and An outer magnetic gap 5B is formed between the two, the third magnetic portion 54 has a leakage passage 54A connecting the outer magnetic gap 5B and the leakage hole 1A, and the clamping plate 51 is at a position facing the outer magnetic gap 5B An escape hole 511 is formed through the upper part, and the escape hole 511 is used to avoid the frame 36 described later.
在本实施例中,所述第一磁部52为第一永磁体。可以理解的是,在其他实施例中,所述第一磁部52也可以由两个、三个等第一永磁体沿振动方向X叠加形成,且相邻两个第一永磁体之间还可以夹设极芯。In this embodiment, the first magnetic portion 52 is a first permanent magnet. It is understandable that, in other embodiments, the first magnetic portion 52 may also be formed by superimposing two, three, etc., first permanent magnets along the vibration direction X, and there is also a gap between two adjacent first permanent magnets. The pole core can be clamped.
在本实施例中,所述第二磁部53为第二永磁体,所述第二永磁体呈连续的环状结构。可以理解的是,在其他实施例中,所述第二磁部53也可以设置成由环绕所述第一磁部的多个第二永磁体构成,且相邻两个所述第二永磁体之间间隔设置;或者,所述第二磁部53也可以由两个、三个等呈连续的环状结构的第二永磁体沿振动方向X叠加形成,且相邻两个第二永磁体之间还可以夹设极芯。 In this embodiment, the second magnetic portion 53 is a second permanent magnet, and the second permanent magnet has a continuous ring structure. It is understandable that in other embodiments, the second magnetic portion 53 may also be configured to be composed of a plurality of second permanent magnets surrounding the first magnetic portion, and two adjacent second permanent magnets Or, the second magnetic portion 53 may also be formed by superimposing two or three second permanent magnets in a continuous ring structure along the vibration direction X, and two adjacent second permanent magnets A pole core can also be sandwiched between.
在本实施例中,所述第三磁部54由环绕所述第二磁部53设置的多个第三永磁体构成,且相邻两所述第三永磁体之间间隔设置。其中,与所述泄露孔1A相邻的两个所述第三永磁体间隔设置形成所述泄露通道54A。可以理解的是,在其他实施例中,所述第三磁部54也可以为呈环状结构的第二永磁体,相应地,所述第二永磁体与所述泄露孔对应的位置上需开设连通所述外磁间隙和所述泄露孔的泄露通道。In this embodiment, the third magnetic portion 54 is composed of a plurality of third permanent magnets arranged around the second magnetic portion 53, and two adjacent third permanent magnets are arranged at intervals. Wherein, the two third permanent magnets adjacent to the leakage hole 1A are spaced apart to form the leakage passage 54A. It can be understood that, in other embodiments, the third magnetic portion 54 may also be a second permanent magnet in a ring structure. Accordingly, the position of the second permanent magnet corresponding to the leakage hole needs to be A leakage channel connecting the external magnetic gap and the leakage hole is opened.
上述中的所述第一永磁体、所述第二永磁体及所述第三永磁体通常采用磁钢。可以理解的是,所述第一永磁体、所述第二永磁体及所述第三永磁体也可以选择天然磁石。 The first permanent magnet, the second permanent magnet, and the third permanent magnet mentioned above are usually made of magnetic steel. It is understandable that the first permanent magnet, the second permanent magnet, and the third permanent magnet can also be natural magnets.
如图4、图5及图6所示,所述第一磁部52远离所述夹板51的一侧上固设有第一极芯55,所述第二磁部53远离所述夹板51的一侧上固设有第二极芯56,所述第三磁部54远离所述夹板51的一侧上固设有第三极芯57,所述夹板51为软磁材料制成的夹板。通过所述第一极芯55、所述第二极芯56、所述第三极芯57及所述夹板51的导磁作用,可以有效增加所述内磁间隙5A和所述外磁间隙5B内的磁通量,从而可以提高发声器件200的声学性能,同时也有利于发声器件200的轻薄化设计。As shown in Figures 4, 5 and 6, a first pole core 55 is fixed on the side of the first magnetic portion 52 away from the clamping plate 51, and the second magnetic portion 53 is away from the clamping plate 51. A second pole core 56 is fixed on one side, and a third pole core 57 is fixed on the side of the third magnetic portion 54 away from the clamping plate 51. The clamping plate 51 is a clamping plate made of soft magnetic material. Through the magnetic permeability of the first pole core 55, the second pole core 56, the third pole core 57 and the clamping plate 51, the inner magnetic gap 5A and the outer magnetic gap 5B can be effectively increased The magnetic flux inside can improve the acoustic performance of the sound generating device 200, and at the same time, it is also conducive to the light and thin design of the sound generating device 200.
在本实施例中,所述第一极芯55、所述第二极芯56、所述第三极芯57位于同一水平面内。In this embodiment, the first pole core 55, the second pole core 56, and the third pole core 57 are located in the same horizontal plane.
所述振动***3包括上振膜31、下振膜33、上音圈34、下音圈35及骨架36,所述上振膜31和所述下振膜33分别固定于所述盆架1的相对两侧,且所述上振膜31和所述下振膜33的振动方向相反,所述上振膜31、所述下振膜33及所述盆架1围合形成收容空间200A,所述磁路***5收容于所述收容空间200A内,所述上音圈34驱动所述上振膜31振动发声,所述下音圈35驱动所述下振膜33振动发声,所述骨架36连接所述下音圈35和所述下振膜33。其中,所述上音圈34***所述内磁间隙5A内,所述下音圈35***所述外磁间隙5B内,所述夹板51的所述避让孔511避让所述骨架36。其中,所述上音圈34和所述下音圈35通过柔性电路板(图未示)与外部电源连接,所述上音圈34通电后,在所述磁路***5的磁力作用下,所述上振膜31随所述上音圈34一同振动;所述下音圈35通电后,在所述磁路***5的磁力作用下,所述下振膜33和所述骨架36随所述下音圈35一同振动。由于所述上振膜31和所述下振膜33设置成振动方向相反并分别由所述上音圈34和所述下音圈35驱动发声,且所述发声器件200被设置成悬置于所述前腔100B内,使得所述上振膜31和所述下振膜33振动发出的声音通过所述出声孔103传至所述扬声器箱外,从而使得扬声器箱的有效振动面积大幅提高以提高扬声器箱的灵敏度;同时,由于所述磁路***5具有所述内磁间隙5A、所述外磁间隙5B、所述避让孔511及所述泄露通道54A,使得所述上振膜31和所述下振膜33振动时,所述收容空间200A内的气流能通过所述泄露孔1A和所述单体泄露孔102与所述后腔100C流通。此外,由于所述上音圈34和所述下音圈35分别***所述磁路***5的所述内磁间隙5A和所述外磁间隙5B内,使得所述上振膜31和所述下振膜33共用同一个磁路***,提高了磁路利用率。The vibration system 3 includes an upper diaphragm 31, a lower diaphragm 33, an upper voice coil 34, a lower voice coil 35, and a frame 36. The upper diaphragm 31 and the lower diaphragm 33 are respectively fixed to the basin frame 1. And the vibration directions of the upper diaphragm 31 and the lower diaphragm 33 are opposite, and the upper diaphragm 31, the lower diaphragm 33, and the basin frame 1 are enclosed to form a receiving space 200A, The magnetic circuit system 5 is housed in the accommodating space 200A, the upper voice coil 34 drives the upper diaphragm 31 to vibrate and produce sound, the lower voice coil 35 drives the lower diaphragm 33 to vibrate and produce sound, and the skeleton 36 connects the lower voice coil 35 and the lower diaphragm 33. Wherein, the upper voice coil 34 is inserted into the inner magnetic gap 5A, the lower voice coil 35 is inserted into the outer magnetic gap 5B, and the avoiding hole 511 of the clamping plate 51 avoids the skeleton 36. Wherein, the upper voice coil 34 and the lower voice coil 35 are connected to an external power source through a flexible circuit board (not shown). After the upper voice coil 34 is energized, under the magnetic force of the magnetic circuit system 5, The upper diaphragm 31 vibrates along with the upper voice coil 34; after the lower voice coil 35 is energized, under the magnetic force of the magnetic circuit system 5, the lower diaphragm 33 and the skeleton 36 follow the The voice coil 35 will vibrate together. Because the upper diaphragm 31 and the lower diaphragm 33 are arranged to vibrate in opposite directions and are respectively driven by the upper voice coil 34 and the lower voice coil 35 to produce sound, and the sound emitting device 200 is arranged to be suspended In the front cavity 100B, the sound generated by the vibration of the upper diaphragm 31 and the lower diaphragm 33 is transmitted to the outside of the speaker box through the sound outlet 103, so that the effective vibration area of the speaker box is greatly increased In order to improve the sensitivity of the speaker box; at the same time, because the magnetic circuit system 5 has the inner magnetic gap 5A, the outer magnetic gap 5B, the escape hole 511 and the leakage channel 54A, the upper diaphragm 31 When the lower diaphragm 33 vibrates, the airflow in the receiving space 200A can circulate with the rear cavity 100C through the leakage hole 1A and the monomer leakage hole 102. In addition, since the upper voice coil 34 and the lower voice coil 35 are inserted into the inner magnetic gap 5A and the outer magnetic gap 5B of the magnetic circuit system 5, respectively, the upper diaphragm 31 and the The lower diaphragm 33 shares the same magnetic circuit system, which improves the utilization rate of the magnetic circuit.
需要说明的是,所述上振膜31和所述下振膜33的振动方向相反是指瞬时振动方向相反。具体地,所述上振膜31向远离所述磁路***5方向振动时,所述下振膜33也向远离所述磁路***5方向振动;所述上振膜31向靠近所述磁路***5方向振动时,所述下振膜33也向靠近所述磁路***5方向振动。It should be noted that the opposite vibration directions of the upper diaphragm 31 and the lower diaphragm 33 mean that the instantaneous vibration directions are opposite. Specifically, when the upper diaphragm 31 vibrates in a direction away from the magnetic circuit system 5, the lower diaphragm 33 also vibrates in a direction away from the magnetic circuit system 5; the upper diaphragm 31 vibrates in a direction closer to the magnetic circuit system 5. When the circuit system 5 vibrates, the lower diaphragm 33 also vibrates in a direction close to the magnetic circuit system 5.
所述骨架36包括与所述下振膜33连接的主体部361及自所述主体部361向所述夹板51方向延伸形成并穿过所述避让孔511的多个连接部363,所述连接部363与所述下音圈35连接。将所述骨架36设置成多所述连接部363的结构可以较大程度的避开所述夹板51,从而使得所述夹板51可设计利用更充分的导磁作用以提高所述外磁间隙5B的磁通量,从而提高所述下振膜33的振动性能。The frame 36 includes a main body portion 361 connected to the lower diaphragm 33 and a plurality of connecting portions 363 extending from the main body portion 361 toward the splint 51 and passing through the escape holes 511. The connection The part 363 is connected to the lower voice coil 35. The structure of the frame 36 with multiple connecting portions 363 can avoid the splint 51 to a greater extent, so that the splint 51 can be designed to utilize more sufficient magnetic permeability to increase the outer magnetic gap 5B. The magnetic flux, thereby improving the vibration performance of the lower diaphragm 33.
如图4、图5、图6及图7所示,所述主体部361呈平板状。平板状的所述主体部361可以加强所述骨架36与所述下振膜33的连接强度。可以理解是,所述主体部361实施方式,并不局限于此;例如,在其他实施例中,所述主体部361也可以设置成呈连续的环状结构。As shown in FIG. 4, FIG. 5, FIG. 6 and FIG. 7, the main body portion 361 has a flat plate shape. The flat main body 361 can strengthen the connection strength between the frame 36 and the lower diaphragm 33. It can be understood that the implementation of the main body portion 361 is not limited to this; for example, in other embodiments, the main body portion 361 may also be arranged in a continuous ring structure.
如图6和图7所示,所述上音圈34和所述下音圈35呈圆角矩形结构,所述连接部363设有四个,且四个所述连接部363一一对应地连接于所述下音圈35的四个圆角处。其中,柔性电路板分别电焊在所述上音圈34和所述下音圈35的圆角位置上。As shown in FIGS. 6 and 7, the upper voice coil 34 and the lower voice coil 35 have a rounded rectangular structure, the connecting portions 363 are provided with four, and the four connecting portions 363 correspond to each other one to one. Connected to the four rounded corners of the lower voice coil 35. Wherein, the flexible circuit board is electrically welded to the rounded positions of the upper voice coil 34 and the lower voice coil 35 respectively.
为了加强所述上振膜31和所述下振膜35振动效果以提高发声器件200的声学性能。在本实施例中,所述振动***3还包括设于所述收容空间200A内的上球顶37和下球顶38,所述上球顶37沿振动方向X上的相对两侧分别与所述上振膜31和所述上音圈34连接,所述下球顶38沿振动方向X上的相对两侧分别与所述主体部361和所述下振膜33连接。可以理解的是,在其他实施例中,所述上球顶37和所述下球顶38还可以设于所述收容空间200A外,且所述上振膜31沿振动方向X上的相对两侧分别与所述上音圈34和所述上球顶37连接,所述下振膜33沿振动方向X上的相对两侧分别与所述下球顶38和所述主体部361连接。In order to strengthen the vibration effect of the upper diaphragm 31 and the lower diaphragm 35 to improve the acoustic performance of the sound emitting device 200. In this embodiment, the vibration system 3 further includes an upper dome 37 and a lower dome 38 arranged in the receiving space 200A, and the upper dome 37 is opposite to each other on opposite sides of the vibration direction X. The upper diaphragm 31 is connected to the upper voice coil 34, and the lower dome 38 is connected to the main body 361 and the lower diaphragm 33 on opposite sides along the vibration direction X, respectively. It is understandable that, in other embodiments, the upper dome 37 and the lower dome 38 may also be arranged outside the receiving space 200A, and the upper diaphragm 31 is opposite to each other in the vibration direction X. The sides are respectively connected to the upper voice coil 34 and the upper dome 37, and the lower diaphragm 33 is respectively connected to the lower dome 38 and the main body 361 along the opposite sides of the vibration direction X.
如图4、图5及图6所示,所述发声器件200还包括上端盖7和下端盖9,所述上振膜31夹设于所述盆架1和所述上端盖7之间,所述上端盖7具有用于所述上振膜31向外发声的第一发声孔71,所述下振膜33夹设于所述盆架1和所述下端盖9之间,所述下端盖9具有用于所述下振膜33向外发声的第二发声孔91。所述上端盖7和所述下端盖9的设置,可以使得所述上振膜31和所述下振膜33更好的固定在所述盆架1上。As shown in Figs. 4, 5, and 6, the sound emitting device 200 further includes an upper end cover 7 and a lower end cover 9, and the upper diaphragm 31 is sandwiched between the basin frame 1 and the upper end cover 7. The upper end cover 7 has a first sounding hole 71 for the upper diaphragm 31 to emit sound outward, the lower diaphragm 33 is sandwiched between the basin frame 1 and the lower end cover 9, and the lower end The cover 9 has a second sound hole 91 for the lower diaphragm 33 to sound outward. The arrangement of the upper end cover 7 and the lower end cover 9 can better fix the upper diaphragm 31 and the lower diaphragm 33 on the basin frame 1.
在本实施例中,所述箱体100包括与所述上端盖7相对且间隔设置的上底面104及与所述下端盖9相对且间隔设置的下底面105,所述上底面104上设有支撑所述上端盖7的多个第一垫块106,所述下底面105上设有支撑所述下端盖9的多个第二垫块107。通过多个所述第一垫块106和多个所述第二垫块107的支撑作用使得所述发声器件200悬置于所述前腔100B内。如图3所示,所述第一垫块106和所述第二垫块107与所述箱体100一体成型,可以理解的是,在其他实施例中,所述第一垫块106也可以是固定在所述上底面104上的垫块,所述第二垫块107也可以是固定在所述下底面105上的垫块。In this embodiment, the box body 100 includes an upper bottom surface 104 opposite to the upper end cover 7 and spaced apart, and a lower bottom surface 105 opposite to the lower end cover 9 and spaced apart. The upper bottom surface 104 is provided with A plurality of first cushion blocks 106 supporting the upper end cover 7, and a plurality of second cushion blocks 107 supporting the lower end cover 9 are provided on the lower bottom surface 105. The sound generating device 200 is suspended in the front cavity 100B through the supporting action of the plurality of first pad blocks 106 and the plurality of second pad blocks 107. As shown in FIG. 3, the first spacer block 106 and the second spacer block 107 are integrally formed with the box body 100. It is understood that, in other embodiments, the first spacer block 106 may also It is a cushion block fixed on the upper bottom surface 104, and the second cushion block 107 may also be a cushion block fixed on the lower bottom surface 105.
与相关技术相比,本发明的扬声器箱通过将所述上振膜31和所述下振膜33设置成振动方向相反并分别由所述上音圈34和所述下音圈35驱动,且将所述发声器件200设置成悬置于所述前腔100B内,使得所述上振膜31和所述下振膜33振动发出的声音通过所述出声孔103传至所述扬声器箱外,从而使得扬声器箱的有效振动面积大幅提高以提高扬声器箱的灵敏度;同时,通过将所述磁路***5设置成具有所述内磁间隙5A、所述外磁间隙5B、所述避让孔511及所述泄露通道54A,使得所述上振膜31和所述下振膜33振动时,所述收容空间200A内的气流能通过所述泄露孔1A和所述单体泄露孔102与所述后腔100C流通。此外,还通过将所述上音圈34和所述下音圈35分别***所述磁路***5的所述内磁间隙5A和所述外磁间隙5B内,使得所述上振膜31和所述下振膜33共用所述磁路***5,从而提高了磁路利用率。Compared with the related art, the speaker box of the present invention is provided by setting the upper diaphragm 31 and the lower diaphragm 33 to have opposite vibration directions and are driven by the upper voice coil 34 and the lower voice coil 35, respectively, and The sound device 200 is arranged to be suspended in the front cavity 100B, so that the sound generated by the vibration of the upper diaphragm 31 and the lower diaphragm 33 is transmitted to the outside of the speaker box through the sound outlet 103 , So that the effective vibration area of the speaker box is greatly increased to improve the sensitivity of the speaker box; at the same time, the magnetic circuit system 5 is configured to have the inner magnetic gap 5A, the outer magnetic gap 5B, and the escape hole 511 And the leakage passage 54A, so that when the upper diaphragm 31 and the lower diaphragm 33 vibrate, the airflow in the accommodation space 200A can pass through the leakage hole 1A and the monomer leakage hole 102 and the The back cavity 100C circulates. In addition, by inserting the upper voice coil 34 and the lower voice coil 35 into the inner magnetic gap 5A and the outer magnetic gap 5B of the magnetic circuit system 5, respectively, the upper diaphragm 31 and The lower diaphragm 33 shares the magnetic circuit system 5, thereby improving the utilization of the magnetic circuit.
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。The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.
Claims (9)
- 一种扬声器箱,包括具有容纳腔的箱体及发声器件,其特征在于,所述箱体内设有将所述容纳腔分隔为前腔和后腔的隔板,所述箱体上贯穿设有与所述前腔连通的出声孔,所述隔板上贯穿设有与所述后腔连通的单体泄露孔,所述发声器件悬置于所述前腔内,所述发声器件包括与所述隔板抵接的盆架以及固持于所述盆架的振动***和驱动所述振动***振动发声的磁路***,所述盆架上贯穿设有与所述单体泄露孔连通的泄露孔,所述振动***包括分别固定于所述盆架的相对两侧且振动方向相反的上振膜和下振膜、驱动所述上振膜振动发声的上音圈、驱动所述下振膜振动发声的下音圈及连接所述下音圈和所述下振膜的骨架,所述上振膜、所述下振膜及所述盆架围合形成***述磁路***的收容空间,所述磁路***包括固持于所述盆架的夹板以及固设于所述夹板朝向所述上振膜的一侧上的第一磁部、第二磁部及第三磁部,所述第二磁部环绕所述第一磁部设置且二者之间形成内磁间隙,所述第三磁部环绕所述第二磁部设置且二者之间形成外磁间隙,所述第三磁部具有连通所述外磁间隙和所述泄露孔的泄露通道,其中,所述上音圈***所述内磁间隙内,所述下音圈***所述外磁间隙内,所述夹板正对所述外磁间隙的位置上贯穿设有避让所述骨架的避让孔。A speaker box includes a box body with a containing cavity and a sound generating device, wherein the box body is provided with a partition that separates the containing cavity into a front cavity and a rear cavity, and the box body is penetrated There is a sound hole communicating with the front cavity, a monomer leakage hole communicating with the rear cavity is penetrated on the partition board, the sound emitting device is suspended in the front cavity, and the sound emitting device includes A basin frame abutting with the partition, a vibration system fixed on the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and produce sound. Leak hole, the vibration system includes an upper diaphragm and a lower diaphragm that are respectively fixed on opposite sides of the basin frame and have opposite vibration directions, an upper voice coil that drives the upper diaphragm to vibrate, and drives the lower vibration The lower voice coil that the diaphragm vibrates and produces sound and the skeleton connecting the lower voice coil and the lower diaphragm, the upper diaphragm, the lower diaphragm and the basin frame are enclosed to form a housing for accommodating the magnetic circuit system Space, the magnetic circuit system includes a splint fixed on the basin frame and a first magnetic part, a second magnetic part and a third magnetic part fixed on the side of the splint facing the upper diaphragm, so The second magnetic part is arranged around the first magnetic part and an inner magnetic gap is formed between the two, and the third magnetic part is arranged around the second magnetic part and an outer magnetic gap is formed between the two. The three magnetic parts have a leakage passage connecting the outer magnetic gap and the leakage hole, wherein the upper voice coil is inserted into the inner magnetic gap, the lower voice coil is inserted into the outer magnetic gap, and the clamping plate An escape hole for avoiding the skeleton is penetrated at a position facing the outer magnetic gap.
- 根据权利要求1所述的扬声器箱,其特征在于,所述第三磁部由环绕所述第二磁部设置的多个第三永磁体构成,且相邻两所述第三永磁体间隔设置,其中,与所述泄露孔相邻的两个所述第三永磁体间隔设置形成所述泄露通道。The speaker box according to claim 1, wherein the third magnetic part is composed of a plurality of third permanent magnets arranged around the second magnetic part, and two adjacent third permanent magnets are arranged at intervals Wherein, two of the third permanent magnets adjacent to the leakage hole are spaced apart to form the leakage channel.
- 根据权利要求1或2所述的扬声器箱,其特征在于,所述第二磁部为第二永磁体,所述第二永磁体呈连续的环状结构。The speaker box according to claim 1 or 2, wherein the second magnetic part is a second permanent magnet, and the second permanent magnet has a continuous ring structure.
- 根据权利要求1所述的扬声器箱,其特征在于,所述骨架包括与所述下振膜连接的主体部及自所述主体部向所述夹板方向延伸形成并穿过所述避让孔的多个连接部,所述连接部与所述下音圈连接。The speaker box according to claim 1, wherein the frame includes a main body portion connected to the lower diaphragm and a plurality of parts extending from the main body portion toward the splint and passing through the escape hole. A connecting part, the connecting part is connected with the lower voice coil.
- 根据权利要求4所述的扬声器箱,其特征在于,所述下音圈呈圆角矩形结构,所述连接部设有四个,且四个所述连接部一一对应地连接于所述下音圈的四个圆角处。The speaker box according to claim 4, wherein the lower voice coil has a rounded rectangular structure, the connecting portion is provided with four, and the four connecting portions are connected to the lower voice coil in a one-to-one correspondence. The four rounded corners of the voice coil.
- 根据权利要求4所述的扬声器箱,其特征在于,所述振动***还包括设于所述收容空间内的上球顶和下球顶,所述上球顶沿振动方向上的相对两侧分别与所述上振膜和所述上音圈连接,所述下球顶沿振动方向上的相对两侧分别与所述主体部和所述下振膜连接。The speaker box according to claim 4, wherein the vibration system further comprises an upper dome and a lower dome arranged in the containing space, and the upper dome is respectively arranged on opposite sides of the vibration direction. It is connected with the upper diaphragm and the upper voice coil, and the opposite sides of the lower dome in the vibration direction are respectively connected with the main body and the lower diaphragm.
- 根据权利要求1所述的扬声器箱,其特征在于,所述第一磁部远离所述夹板的一侧上固设有第一极芯,所述第二磁部远离所述夹板的一侧上固设有第二极芯,所述第三磁部远离所述夹板的一侧上固设有第三极芯,所述夹板为软磁材料制成的夹板。The speaker box according to claim 1, wherein a first pole core is fixed on the side of the first magnetic part away from the splint, and the second magnetic part is on the side away from the splint. A second pole core is fixedly arranged, a third pole core is fixedly arranged on a side of the third magnetic part away from the clamping plate, and the clamping plate is a clamping plate made of soft magnetic material.
- 根据权利要求1所述的扬声器箱,其特征在于,所述发声器件还包括上端盖和下端盖,所述上振膜夹设于所述盆架和所述上端盖之间,所述上端盖具有用于所述上振膜向外发声的第一发声孔,所述下振膜夹设于所述盆架和所述下端盖之间,所述下端盖具有用于所述下振膜向外发声的第二发声孔。The speaker box according to claim 1, wherein the sound generating device further comprises an upper end cover and a lower end cover, the upper diaphragm is sandwiched between the basin frame and the upper end cover, and the upper end cover There is a first sound hole for the upper diaphragm to emit sound, the lower diaphragm is sandwiched between the basin frame and the lower end cover, and the lower end cover has a direction for the lower diaphragm The second sound hole for external sound.
- 根据权利要求8所述的扬声器箱,其特征在于,所述箱体包括与所述上端盖相对且间隔设置的上底面及与所述下端盖相对且间隔设置的下底面,所述上底面上设有支撑所述上端盖的多个第一垫块,所述下底面上设有支撑所述下端盖的多个第二垫块。The speaker box according to claim 8, wherein the box body includes an upper bottom surface opposite to the upper end cover and spaced apart, and a lower bottom surface opposite to the lower end cover and spaced apart, the upper bottom surface A plurality of first cushion blocks supporting the upper end cover are provided, and a plurality of second cushion blocks supporting the lower end cover are provided on the lower bottom surface.
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