CN205320275U - Two -way miniature speaker - Google Patents

Two -way miniature speaker Download PDF

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Publication number
CN205320275U
CN205320275U CN201520797537.5U CN201520797537U CN205320275U CN 205320275 U CN205320275 U CN 205320275U CN 201520797537 U CN201520797537 U CN 201520797537U CN 205320275 U CN205320275 U CN 205320275U
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China
Prior art keywords
voice coil
magnet
high pitch
bass
coil loudspeaker
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CN201520797537.5U
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Chinese (zh)
Inventor
张桐战
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Goertek Inc
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Goertek Inc
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Priority to CN201520797537.5U priority Critical patent/CN205320275U/en
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Abstract

The utility model discloses a two -way miniature speaker, including bass vibration subassembly, high pitch vibration subassembly, magnetic circuit assembly and the basin frame of acceping magnetic circuit assembly, bass vibration subassembly includes bass voice coil loudspeaker voice coil and bass vibrating diaphragm, high pitch vibration subassembly includes high pitch voice coil loudspeaker voice coil and high pitch vibrating diaphragm, magnetic circuit assembly includes magnet and hua si board, form the first magnetic gap of holding bass voice coil loudspeaker voice coil between magnet and the basin frame, the central point of china department board puts recessedly, and the direction to being close to high pitch vibration subassembly is extended, extend portion and magnet formation second magnetic gap, the suspension of high pitch voice coil loudspeaker voice coil is in the second magnetic gap, china department board is for level and put the arc structure who swells gradually to central point all around, the edge of china department board extends to the direction of being close to magnet, parcel magnet. The utility model discloses a two -way miniature speaker has realized magnetic circuit assembly on the bass vibration subassembly and the sharing of high pitch vibration subassembly, the sensitivity that can improve the medium -high frequency part, optimizing produte performance to simple structure practices thrift manufacturing cost.

Description

Bi-directional mini speaker
Technical field
This utility model relates to electroacoustic field, is specifically related to a kind of bi-directional mini speaker.
Background technology
Speaker is a kind of device that can convert electrical energy into acoustic energy, is now widely used in the mobile terminal electronic installations such as mobile phone, computer, MP3. The sounding effect of termination, as basic microphone device, is had very crucial impact by speaker, and along with the development of scientific and technical progress and electron trade, people it is also proposed higher requirement for the performance of speaker.
Conventional speaker is generally unidirectional horn structure, including a magnetic circuit and a vibration component, this structural design is fairly simple, but but cannot take into account performance and the tonequality of product different frequency range when high and low frequency well, there are some speakers low frequencies place better performances, also having some is then high frequency treatment better performances, based on this, double-bang firecracker loudspeaker progress into the visual field of people, two-way loudspeaker works when can meet low frequency and high frequency simultaneously, for the performance curve of product and the tonequality of audition, there is effect that is complementary and that promote, the deficiency of unidirectional speaker can be made up to a certain extent.
In prior art, two-way loudspeaker includes bass vibration component and high pitch vibration component, bass vibration component correspondence low frequency, high pitch vibration component correspondence high frequency, and two parts vibration component are respectively cooperating with different magnetic circuit component operation, that is, the magnetic circuit assembly of existing two-way loudspeaker also includes two parts, and every a part of magnetic circuit all has Magnet and washer to constitute, and this structural design is more complicated, the space availability ratio of product is relatively low, and production cost is higher. Therefore, it is necessary to provide a kind of new two-way loudspeaker structure, under the premise ensureing its performance, simplify its internal structure as far as possible, save cost.
Utility model content
Technical problem to be solved in the utility model is: provides a kind of bi-directional mini speaker, by the improvement to washer structure, it is achieved high and low sound vibration component shares a magnetic circuit, simplifies product structure.
To achieve these goals, this utility model by the following technical solutions: a kind of bi-directional mini speaker, including bass vibration component, high pitch vibration component, magnetic circuit assembly and the frame housing described magnetic circuit assembly; Described bass vibration component includes bass voice coil loudspeaker voice coil and bass vibrating diaphragm; Described high pitch vibration component includes high pitch voice coil loudspeaker voice coil and tweeters diaphragms; Described magnetic circuit assembly includes Magnet and washer plate, wherein, forms the first magnetic gap of accommodating described bass voice coil loudspeaker voice coil between described Magnet and described frame; The center of described washer plate is recessed, and extends near the direction of described high pitch vibration component, and extension and described Magnet form the second magnetic gap; Described high pitch voice coil loudspeaker voice coil is suspended in described second magnetic gap; Described washer plate is surrounding arc structure that is smooth and that swell gradually to center; The edge of described washer plate extends near the direction of described Magnet, wraps up described Magnet.
Improving as one, described bi-directional mini speaker is loop configuration.
As one improve, described washer plate include the planar portions of smooth design, the protuberance swelled gradually to the center of described washer plate from described planar portions and from described center to the extension extended near the direction of described high pitch vibration component.
Improving as one, the thickness of described protuberance is more than the thickness of described planar portions; The thickness of described protuberance not etc., and is not gradually increased to the direction near described center.
Improving as one, the edge of described planar portions extends vertically to described Magnet direction, Magnet described in portion envelops.
Improve as one, the described extension described Magnet of traverse; One end of described extension is placed in described high pitch voice coil loudspeaker voice coil.
Improving as one, described high pitch voice coil loudspeaker voice coil is positioned at the inner side of described Magnet, and described bass voice coil loudspeaker voice coil is positioned at the outside of described Magnet; Described magnetic circuit assembly to the emission magnetic line of force, inwardly launches the magnetic line of force by the extension of described washer plate by the sidewall of described frame.
Improving as one, described frame is metal material.
Improving as one, the bottom of described frame is combined with lid; Described lid seals the HFS of described bi-directional mini speaker; Described lid central authorities offer leak holes.
Improve as one, the sidewall of described frame is combined with the conducting wire plate for connecting peripheral circuits; Described frame sidewall is provided with acoustic aperture; Be sticked in described acoustic aperture screen cloth.
Compared to existing technologies, bi-directional mini speaker of the present utility model, the first magnetic gap of accommodating bass voice coil loudspeaker voice coil it is formed with between its Magnet and frame, simultaneously washer plate center is recessed and extend near the direction of high pitch vibration component, the second magnetic gap is defined between the extension and Magnet of washer plate, and high pitch voice coil loudspeaker voice coil is suspended in the second magnetic gap, high pitch voice coil loudspeaker voice coil is in the uniform position of the Magnet magnetic line of force, so can realize bass vibration component and share a magnetic circuit assembly with high pitch vibration component, the sensitivity at medium-high frequency place can be improved, simplify the structure of two-way loudspeaker in prior art simultaneously, save cost, improve the space availability ratio of product, additionally, due to height, bass vibration component shares toroid, bass voice coil loudspeaker voice coil is in the outside of magnetic circuit, the magnetic line of force that magnetic circuit sends out is uneven, thus can cause that the symmetry of BL (stress-electric coupling coefficient) is poor, the situation that non-linear distortion is bad easily occurs, and in this utility model, washer plate is designed as surrounding arc structure that is smooth and that swell gradually to center, center is recessed, surrounding downwardly extends parcel Magnet, be equivalent to increase the thickness of washer plate, the thickness making uniform magnetic field increases, the area of voice coil loudspeaker voice coil cutting uniform magnetic field also increases, the distortion that can more efficiently improve product is bad.
Accompanying drawing explanation
Fig. 1 is the explosive view of this utility model bi-directional mini loadspeaker structure;
Fig. 2 is this utility model bi-directional mini speaker back appearance schematic diagram;
Fig. 3 is the generalized section of this utility model bi-directional mini loadspeaker structure;
Fig. 4 is that this utility model bi-directional mini speaker washer hardens the sectional view of structure;
Accompanying drawing labelling therein includes: 1, frame, and 2, Magnet, 3, washer plate, 31, planar portions, 32, protuberance, 33, extension, 4, bass vibration component, 41, bass vibrating diaphragm, 42, bass voice coil loudspeaker voice coil, 5, high pitch vibration component, 51, tweeters diaphragms, 52, high pitch voice coil loudspeaker voice coil, 6, lid, 7, conducting wire plate, 8, screen cloth.
Detailed description of the invention
Below in conjunction with accompanying drawing, describe this utility model content in detail:
Embodiment:
Bi-directional mini speaker of the present utility model changes the design of two magnetic circuits in traditional two-way Microspeaker, consult Fig. 1, Fig. 2 and Fig. 3 jointly shown in, the bi-directional mini speaker of present embodiment is loop configuration, including vibrational system and magnetic circuit assembly, wherein, vibrational system includes bass vibration component 4 and high pitch vibration component 5, the low frequency part of bass vibration component 4 corresponding product, the HFS of high pitch vibration component 5 then corresponding product, concrete, the bass that bass vibration component 4 includes mutually being bonded together shakes and touches 41 and bass voice coil loudspeaker voice coil 42, high pitch vibration component 5 includes the tweeters diaphragms 51 and the high pitch voice coil loudspeaker voice coil 52 that are mutually bonded together, magnetic circuit assembly is contained in frame 1, and including magnet 2 and washer plate 3, washer plate 3 is the structure of hollow, is formed with the first magnetic gap between Magnet 2 and frame 1, and bass voice coil loudspeaker voice coil 42 is just suspended in this magnetic gap.
Consult shown in Fig. 3 and Fig. 4, in present embodiment, the center of washer plate 3 is recessed, and extends near the direction of high pitch vibration component 5, say, that, washer plate 3 is provided with the extension 33 extended from center to the direction of high pitch vibration component 5, extension 33 traverse Magnet 2, and and between Magnet 2, form the second magnetic gap, high pitch voice coil loudspeaker voice coil 52 is just suspended in the second magnetic gap, further, the end accommodation of extension 33 is in the space of high pitch voice coil loudspeaker voice coil 52. As known from the above, the bi-directional mini speaker of present embodiment, its high pitch voice coil loudspeaker voice coil 52 is positioned at the inner side of Magnet 2, bass voice coil loudspeaker voice coil 42 is positioned at the outside of Magnet 2, magnetic circuit assembly to the emission magnetic line of force, inwardly launches the magnetic line of force by the extension 33 of washer plate 3 by the sidewall of frame 1 (being preferably metal material). Wherein, the sidewall of frame 1 also incorporates the conducting wire plate (pcb board) 7 for connecting peripheral circuits, the current signal of such external circuit can pass through conducting wire plate 7 and be transferred to voice coil loudspeaker voice coil, voice coil loudspeaker voice coil does the motion of the reciprocating cutting magnetic line of force under the effect of electromagnetic field, thus driving connected diaphragm oscillations, producing sound wave, and being transferred to external environment by the acoustic aperture being arranged on the sidewall of frame 1, be sticked in acoustic aperture screen cloth 8, and screen cloth 8 can be used for tuning. Frame 1 involved herein is preferably the structure of metal material.
Pass through such scheme, bi-directional mini speaker of the present utility model, achieve bass vibration component by the extended structure of washer plate and high pitch vibration component shares a magnetic circuit assembly, simple in construction, the space availability ratio of product is big, compared to the existing bi-directional mini speaker being respectively cooperating with different magnetic circuit component operation, the technical program can reduce the production cost of product;Meanwhile, pass through the technical program, it is possible to be effectively improved the sensitivity of product medium-high frequency part, improve product tonequality.
Known from the above, in bi-directional mini speaker of the present utility model, high and low sound vibration component shares a toroid assembly, now, bass voice coil loudspeaker voice coil 42 is positioned at the outside of magnetic circuit, and the magnetic line of force that toroid sends out uneven, this is easy for the situation occurring non-linear distortion bad, and the technical program is further directed to the method that this problem proposes to solve:
Consult Fig. 1, shown in Fig. 3 and Fig. 4, in present embodiment, washer plate 3 is surrounding arc structure that is smooth and that swell gradually to center, its marginal portion extends near the direction of Magnet 2, parcel Magnet 2, specifically, washer plate 3 includes the planar portions 31 of smooth design, center to washer plate 3 is swelled gradually from planar portions 31 protuberance 32 and from center to the extension 33 extended near the direction of high pitch vibration component 5, owing to washer plate 3 is swelled gradually by four circumference centers, so the thickness of protuberance 32 is more than the thickness of planar portions 31, simultaneously, the thickness of protuberance 32 itself is also do not wait, show as and be gradually increased to the direction near center, that is, washer plate 3 is the closer to the part at center, its thickness is more big, the edge of planar portions 31 extends vertically to the direction of Magnet 2, is wrapped up near the periphery of the part of washer plate 3 by Magnet 2.
In such scheme, by the improvement to washer plate 3 self structure, it is equal to the thickness adding washer plate 3, the magnetic line of force is more uniformly distributed, integrated distribution, for being positioned at the bass voice coil loudspeaker voice coil outside magnetic circuit, the area of its cutting uniform magnetic field just increases, it is possible to the distortion effectively improving product is bad, optimizing product performance.
Preferably, the bottom of frame 1 is combined with lid 6, the HFS of lid 6 sealing two-way Microspeaker, can so that tweeters diaphragms 51 increases to the radiation efficiency of low frequency part, improving the sensitivity of product medium-high frequency, the middle position of lid 6 offers leak holes, in order to equilibrium air pressure.
It should be noted that, the magnetic circuit of the bi-directional mini speaker shown in present embodiment is single magnetic structure, in fact, the enforcement of the technical program is not limited to the product of single magnetic structure, bi-directional mini speaker product for multipath magnetic circuit structure is equally possible applicable, not by the restriction of this detailed description of the invention.
These are only this utility model case study on implementation, be not limited to this utility model, as long as those of ordinary skill in the art modify or change according to the equivalence that this utility model disclosure is made, all should include in the protection domain recorded in claims.

Claims (10)

1. a bi-directional mini speaker, including bass vibration component, high pitch vibration component, magnetic circuit assembly and the frame housing described magnetic circuit assembly; Described bass vibration component includes bass voice coil loudspeaker voice coil and bass vibrating diaphragm; Described high pitch vibration component includes high pitch voice coil loudspeaker voice coil and tweeters diaphragms; Described magnetic circuit assembly includes Magnet and washer plate, it is characterised in that: form the first magnetic gap of accommodating described bass voice coil loudspeaker voice coil between described Magnet and described frame; The center of described washer plate is recessed, and extends near the direction of described high pitch vibration component, and extension and described Magnet form the second magnetic gap; Described high pitch voice coil loudspeaker voice coil is suspended in described second magnetic gap; Described washer plate is surrounding arc structure that is smooth and that swell gradually to center; The edge of described washer plate extends near the direction of described Magnet, wraps up described Magnet.
2. bi-directional mini speaker according to claim 1, it is characterised in that: described bi-directional mini speaker is loop configuration.
3. bi-directional mini speaker according to claim 1, it is characterized in that: described washer plate is the structure of hollow, including the planar portions of smooth design, the protuberance swelled gradually to the center of described washer plate from described planar portions and from described center to the extension extended near the direction of described high pitch vibration component.
4. bi-directional mini speaker according to claim 3, it is characterised in that: the thickness of described protuberance is more than the thickness of described planar portions; The thickness of described protuberance not etc., and is not gradually increased to the direction near described center.
5. bi-directional mini speaker according to claim 3, it is characterised in that: the edge of described planar portions extends vertically to Magnet direction, portion envelops Magnet.
6. bi-directional mini speaker according to claim 3, it is characterised in that: described extension traverse Magnet; One end of described extension is placed in high pitch voice coil loudspeaker voice coil.
7. bi-directional mini speaker according to claim 1, it is characterised in that: described high pitch voice coil loudspeaker voice coil is positioned at the inner side of described Magnet, and described bass voice coil loudspeaker voice coil is positioned at the outside of described Magnet; Described magnetic circuit assembly to the emission magnetic line of force, inwardly launches the magnetic line of force by the extension of described washer plate by the sidewall of described frame.
8. bi-directional mini speaker according to claim 7, it is characterised in that: described frame is metal material.
9. bi-directional mini speaker according to claim 8, it is characterised in that: the bottom of described frame is combined with lid; Described lid seals the HFS of described bi-directional mini speaker; Described lid central authorities offer leak holes.
10. bi-directional mini speaker according to claim 9, it is characterised in that: the sidewall of described frame is combined with the conducting wire plate for connecting peripheral circuits; Described frame sidewall is provided with acoustic aperture; Be sticked in described acoustic aperture screen cloth.
CN201520797537.5U 2015-10-15 2015-10-15 Two -way miniature speaker Active CN205320275U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520797537.5U CN205320275U (en) 2015-10-15 2015-10-15 Two -way miniature speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520797537.5U CN205320275U (en) 2015-10-15 2015-10-15 Two -way miniature speaker

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CN205320275U true CN205320275U (en) 2016-06-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110881160A (en) * 2019-11-12 2020-03-13 歌尔股份有限公司 Sound production device
CN111836160A (en) * 2020-09-21 2020-10-27 歌尔股份有限公司 Sound production module

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110881160A (en) * 2019-11-12 2020-03-13 歌尔股份有限公司 Sound production device
WO2021093677A1 (en) * 2019-11-12 2021-05-20 歌尔股份有限公司 Sound production device
CN110881160B (en) * 2019-11-12 2021-08-31 歌尔股份有限公司 Sound production device
CN111836160A (en) * 2020-09-21 2020-10-27 歌尔股份有限公司 Sound production module
CN111836160B (en) * 2020-09-21 2020-12-15 歌尔股份有限公司 Sound production module

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C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268

Patentee after: Goertek Inc.

Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268

Patentee before: Goertek Inc.