201201594 六、發明說明： 【發明所屬之技術領域】 尤其涉及—種應用合金殼體 [0001] 本發明涉及一種發聲裝置 的發聲裝置。 [先前技術] [0002] 隨著新技術和新材料的不齡级 叫赞展，人們對視聽品質的要 求也越來越南。發聲震署 如耳機、音響，產品層出不 I㈣’先前技術切發聲裝切的改進多著重於其 〇 ^揚聲器的改進，對毅體改進則較少。但殼體對音質 的回應同樣很大，直接影響_^^ [0003] 以耳機為例’其殼體多由於„ 夕由於共振及混響對揚聲器及整個 耳機的發較果造絲響，先料術巾料機殼體為塑 職樹脂’造成耳機發聲的混響較長殼禮的共振較強 ，發聲效果㈣清晰，使耳機存在音質不好關題。另外 ，塑膠或樹脂的殼體耐用性不好，容易變形’並且不约 輕巧。 〇 【發明内容】 圃-種發聲裝置，其包括：殼體；以及揚聲器，該揚聲器 設置於該殼體内部；該殼體的材料為錤基複合材料該 鎮基複合材料包括鎂基金屬和分散在該錢基金屬中的奈 米增強相，該鎮基複合材料的晶粒為100微米至150微米 〇 [0005] 099120739 相較於先前技術’本技術方案採⑽基複合材料作為發 聲裝置的殼體，可以減少殼體產生的混響及共振，使發 聲效果清晰，從而提高發聲裝置的音f。並且，錢基複 表單編號A0101 第3頁/共26頁 0992036590-0 201201594 合材料的殼體比塑膠殼體更為堅固耐用，由於該殼體具 有較好的強度，在滿足強度需要的前提下，可採用較小 的壁厚，從而減輕發聲裝置的總體質量，並使發聲裝置 内部空間增大。 【實施方式】 [0006] 以下將結合附圖詳細說明本技術方案實施例的發聲裝置 〇 [0007] 本技術方案提供一種發聲裝置，該發聲裝置包括中空的 殼體以及設置於殼體内部的揚聲器。該發聲裝置可以為 耳機、音響、喇°八、手機、筆記本電腦或電視。 [0008] 請參閱圖1，本技術方案實施方式以耳機10為例，該耳機 10包括中空的耳機殼體以及設置於殼體内部的揚聲器14 。該耳機10可以為頭戴式、耳掛式、入耳式或耳塞式等 結構。 [0009] 該揚聲器14可以為電動式、電容式、靜電式、氣動式及 壓電式等類型。該揚聲器14用於將電信號轉換成聲音信 號。具體地，揚聲器14可將一定範圍内的音頻電功率信 號通過換能方式轉變為失真小並具有足夠聲壓級的可聽 聲音。本實施例中，該揚聲器14為電動式揚聲器14。 [0010] 該殼體的壁厚為0. 01毫米至2毫米。該殼體可包括面對使 用者的前部12及連接導線的後部16，該前部12可進一步 包括多個出聲孔。本實施例中，該耳機為耳塞式，前部 12為具有出聲孔的圓片蓋體，後部16為與圓片蓋體扣合 的碗形基座。 099120739 表單編號A0101 第4頁/共26頁 0992036590-0 201201594 [0011] 該殼體的”m和後部16巾至少_㈣分由 料製成。本實施射，該殼體整體域基複合材„1 ，即圓片蓋體與碗形基座的材料均為鎂基複合材料j 鎮基複合㈣包_基金屬和分散在該鎂基金屬中的夺 未增強相。該奈切_可以為奈米碳管、碳切夺米 顆粒、氧化料米顆粒、碳化鈦奈米顆粒、碳化侧夺米 顆粒、石墨奈_粒或其絲，優選為奈料管或碳化 石夕奈未顆粒。該奈米碳管可以為單壁奈米碳管、 ο =多壁奈米碳管中的-種或多種。所“ Ο 奴管的直徑為°.5奈_奈米，所述雙壁奈来碳管的直 径為1.0奈米〜50奈来，所述多壁奈米碳管的直徑為^ 5 奈米，奈求。該奈米增強相在鎮基複合材料中的質量百 分含量約為0.01%至10%，優選為〇 5%至2%。該夺米增強 相的形狀可以為粉末、纖維或晶須。該奈米增強相的二 寸（即粉末、纖維或晶須的直徑）約為1奈米至⑽太米 ，優選細奈^50“。_基金料_或鎮： 。該鎂合金的組成元^徐鎂外，還包括鋅、錳鋁鍅 、灶、裡、銀、鱗合金料的—種或多種，其中㈣ 錢合金質量百分比m以上，其他金屬元素的總合㈣合 金質量百分比20%以下。該鎖合金的型號可以為㈣】、 AM60、AS41、AS21、AE42，優選為AZ91。 [0012] 該奈来增強相的加人有利於鎂基金屬晶极的細化，能夠 提高該殼體的抗拉強度（tensile strength)及伸長 率（elongation)。本實施例中，該鎂基金屬採用 AZ91D型號的鎂合金，該奈米增強相採用奈米碳管或碳化 099120739 表單編號A0101 第5頁/共26頁 0992036590-0 201201594 矽奈米顆粒。請參閱圖2至圖5，將具有質量百分比為 0. 5%，U及1. 5%的奈米增強相的鎂基複合材料與純 AZ91D鎂合金進行晶粒對比，發現隨著奈米增強相質量百 分比在0. 5°/。至1. 5%範圍内逐漸提高，該鎂基複合材料的 晶粒明顯減小。所述該鎂基複合材料的晶粒比用於製造 該鎂基複合材料的鎂基金屬的晶粒減小60%至75%。該鎂 基複合材料的晶粒約為100微米至150微米。本實施例中 ，當該鎂基複合材料的奈米增強相為質量百分比為0. 5% 至2%的奈米碳管時，該鎂基複合材料的晶粒可以比AZ91D 鎂合金的晶粒減小60%至75%。請參閱圖6，當該鎂基複合 材料的奈米增強相為質量百分比為〇. 5%至2%的碳化矽時 ，鎂晶粒與碳化矽晶粒之間的介面清晰，不存在介面間 反應的中間相。請參閱圖7，將奈米增強相為不同質量百 分含量的奈米碳管的鎂基複合材料進行抗拉強度測試， 發現當奈米碳管佔鎂基複合材料質量百分比為1. 5%時， 該鎂基複合材料具有較好的抗拉強度。 [0013] 請參閱圖8，將奈米增強相為不同質量百分含量的奈米碳 管的鎂基複合材料進行伸長率測試，發現當奈米碳管佔 鎂基複合材料質量百分比為1. 5%時，該鎂基複合材料具 有較好的伸長率。上述測試表明，通過在鎂基金屬中加 入奈米增強相，有效地細化了晶粒，提高了鎂基複合材 料的抗拉強度及伸長率，有利於該耳機殼體的製造，並 有利於提高該耳機殼體的強度和耐用性，具體試驗資料 請參閱表1。 [0014] 表1抗拉強度及伸長率測試資料表 099120739 表單編號A0101 第6頁/共26頁 0992036590-0 201201594 Ο 〇 [0016] 奈米碳 管質量 百分含 量 0% 0. 01% 0. 5% 1% 1.5% 2% 抗拉強 度 (MPa) 86 86.5 89 96 104 90 伸長率 (%) 0. 92 0.93 1.1 1. 26 1. 28 0. 67 該殼體的製造方法可以為觸變成形、壓鑄成形、粉末冶 金或機械加工成形等。具體地*可將所述奈米增強相的 粉末、纖維或晶須加入熔融的鎂基金屬中，並通過觸變 成形或壓鑄成形的方法得到耳機殼體，或者可以將鎂基 金屬的粉末與奈米增強相進行混合，並通過粉末冶金的 方法製備耳機殼體，另外，也可以將所述鎂基複合材料 預先形成坯體，並通過機械加工的方式形成耳機殼體。 在本實施例中，該鎂基複合材料的製備方法包括以下步 驟： [0017] 首先，提供鎂基金屬及奈米增強相； [0018] 其次，將奈米增強相在460°C至580°C下加入熔融的鎂基 金屬進行混合形成混合物； [0019] 再次，在620°C至650°C下對該混合物進行超聲波處理使 奈米增強相均勻分散在鎂基金屬中；以及 [0020] 最後，將該混合物在650°C至680°C下進行澆鑄，形成鎂 099120739 表單編號A0101 第7頁/共26頁 0992036590-0 201201594 基複合材料链體。 [0021] 在上述混合、超聲波處理及澆鑄過程中的溫度分三個階 段逐漸升高，有利於使鎂基複合材料中的晶粒細化，並 且，上述過程均在保護氣體中進行，以防止鎂基金屬被 氧化。所述保護氣體可選自惰性氣體和氮氣中的一種或 多種，本實施例中保護氣體優選為為氮氣。 [0022] 具體地，該鎂基金屬可以為AZ91D鎂合金，該奈米增強相 可以為奈米碳管或碳化矽。該熔融的鎂基金屬可設置於 一内部充滿保護氣體的容器中。在將奈米增強相加入該 熔融的鎂基金屬的過程中可進一步通過攪拌器不斷對容 器中的混合物進行機械攪拌，使奈米增強相和該熔融的 鎂基金屬初步混合，得到一混合漿料。 [0023] 該超聲波處理的過程可以為將混合物連同容器置於一高 能量超聲波震盪攪拌裝置中，在一定頻率的超聲波下震 盪一段時間後，得到一均勻混合聚料。所述超聲波的頻 率為15千赫茲至20千赫茲，本實施例中超聲波的頻率優 選為15千赫茲。所述超聲波處理的時間為5分鐘至40分鐘 ，優選為30分鐘。本技術方案所採用超聲震盪的超聲波 頻率選擇為15-20千赫茲，相對於一般超聲波頻率48千赫 茲而言，本技術方案所採用的超聲波的頻率較低，而此 超聲震盪裝置為一高能量超聲震盪攪拌裝置，因此該超 聲震盪裝置的振幅較大，因此可以使輕金屬熔湯中的輕 金屬微粒發生劇烈運動，從而可以使奈米級顆粒增強體 在輕金屬炫湯中均勻分配，得到一均勻混合漿料。 099120739 表單編號A0101 第8頁/共26頁 0992036590-0 201201594 [0024] 在洗鎮的過程中該 >見合漿料可海禱至—模且中冷卻固化 ，形成違鎮基複合材料述體。進一步地，可通過一擠麼 成型處理過程處理該錢基複合材料堪體。通過該擠壓成 型處理過程，該奈米增強相在該混合物中經再次分配， _ 分散更加均勻，可進一步提高該鎂基複合材料的強度和 勒性。 [0025] 〇 該坯體可進一步通過壓鑄成型，得到該耳機殼體。將奈 米碳管作為奈来增強相’ AZ91D鎂合金作為鎂基金屬，且 該奈米增強相的質量百分含量為5%，通過壓鑄成形法 製備殼體。請參閱表2 ’讓鎂基複合材料製成的殼體與塑 膠殼體及AZ91D鎮合金殼體相比，具有較好的屈服強度， 且後度比AZ91D鎮合金有所降低〇 〇 [0026] [0027] 表2不同材料殼體性能對比 參數 塑膠 (PC+ABS) 密度 (g/cm3) 1. 07 …叫*'!·,, ：：Γ 屈服強度 (MPa) 39 AZ 91D無合金201201594 VI. Description of the Invention: [Technical Field of the Invention] In particular, the present invention relates to a sounding device for a sounding device. [Prior Art] [0002] With the ageing of new technologies and new materials, the demand for audio-visual quality is getting more and more south. The vocal vibration system, such as headphones, audio, product layer is not I (four) 'The improvement of the previous technology cut-and-spinning is more important than its 〇 ^ speaker improvement, less improvement on the body. However, the response of the housing to the sound quality is also very large, directly affecting _^^ [0003] Taking the earphone as an example, the case is more due to the fact that due to resonance and reverberation, the speaker and the whole earphone are made to make a sound. The material of the material processing machine is made of plastic resin. The reverberation of the earphones makes the resonance of the earphones stronger. The sound effect (four) is clear, so that the sound quality of the headphones is not good. In addition, the plastic or resin housing is durable. Sexually good, easy to deform 'and not too light. 〇 【Abstract】 圃-type sounding device, including: a housing; and a speaker, the speaker is disposed inside the housing; the material of the housing is thiol composite Material The matrix-based composite material comprises a magnesium-based metal and a nano-reinforced phase dispersed in the money-based metal, the grain of the matrix-based composite material being from 100 micrometers to 150 micrometers. [0005] 099120739 compared to the prior art The technical scheme adopts the (10) base composite material as the casing of the sounding device, which can reduce the reverberation and resonance generated by the casing, and make the sounding effect clear, thereby improving the sound f of the sounding device. Moreover, the money base complex form number A0101 is 3 Page / Total 26 pages 0992036590-0 201201594 The housing of the composite material is more durable than the plastic housing. Due to the good strength of the housing, a smaller wall thickness can be used to meet the strength requirements. The overall quality of the sounding device is reduced, and the internal space of the sounding device is increased. [Embodiment] The sounding device of the embodiment of the present technical solution will be described in detail below with reference to the accompanying drawings. [0007] The technical solution provides a sounding device. The sounding device comprises a hollow casing and a speaker disposed inside the casing. The sounding device can be an earphone, an audio, a mobile phone, a notebook computer or a television. [0008] Please refer to FIG. 1 , the technical solution embodiment Taking the earphone 10 as an example, the earphone 10 includes a hollow earphone housing and a speaker 14 disposed inside the casing. The earphone 10 can be a head-mounted, ear-hook, in-ear or earbud type. The speaker 14 can be of the electric, capacitive, electrostatic, pneumatic, and piezoelectric type, etc. The speaker 14 is used to convert an electrical signal into a sound signal. The speaker 14 can convert a range of audio electric power signals into a audible sound having a small distortion and sufficient sound pressure level by means of a transmissive mode. In the present embodiment, the speaker 14 is an electric speaker 14. [0010] The housing The wall thickness is from 0.01 mm to 2 mm. The housing may include a front portion 12 facing the user and a rear portion 16 connecting the wires, and the front portion 12 may further include a plurality of sound holes. In this embodiment, The earphone is an earbud type, the front portion 12 is a wafer cover body having a sound hole, and the rear portion 16 is a bowl-shaped base that is engaged with the wafer cover body. 099120739 Form No. A0101 Page 4 of 26 0992036590-0 201201594 [0011] The "m" and the rear 16 of the housing are at least _ (four) divided from the material. In the present embodiment, the shell integral domain composite material „1 , that is, the material of the wafer cover body and the bowl base is a magnesium-based composite material j-base composite (four) package _ base metal and dispersed in the magnesium-based metal The Naiqi _ can be a carbon nanotube, a carbon-cut rice granule, an oxidized rice granule, a titanium carbide nanoparticle, a carbonized side rice granule, a graphite granule or a silk thereof, preferably a nai The tube or the carbonized stone is not granules. The carbon nanotubes may be single-walled carbon nanotubes, ο = multi-walled carbon nanotubes of the species or a plurality of types. The diameter of the 奴 slave tube is °. The diameter of the double-walled carbon nanotubes is from 1.0 nm to 50 nm, and the diameter of the multi-walled carbon nanotubes is ^5 nm. The nano reinforcing phase has a mass content of from about 0.01% to about 10%, preferably from about 5% to about 2%, in the agglomerate composite. The shape of the rice-enhancing phase may be powder, fiber or whisker. The two inches of the nano reinforcing phase (ie, the diameter of the powder, fiber or whisker) is about 1 nm to (10) mils, preferably fine ^50". _ fund material _ or town: the composition of the magnesium alloy ^Xu magnesium, also includes zinc, manganese aluminum bismuth, stove, lin, silver, scale alloy materials - or more, of which (4) money alloy mass percentage m or more, the total of other metal elements (four) alloy mass percentage below 20% The type of the lock alloy may be (4), AM60, AS41, AS21, AE42, preferably AZ91. [0012] The addition of the nano-reinforced phase is beneficial to the refinement of the magnesium-based metal crystal pole, and the shell can be improved. Tension strength and elongation. In this embodiment, the magnesium-based metal is a magnesium alloy of AZ91D type, and the nano-reinforced phase is made of carbon nanotubes or carbonized 099120739 Form No. A0101 Page 5 / Total 26 pages 0992036590-0 201201594 矽 nano particles. Please refer to Figure 2 to Figure 5, the magnesium-based composite with a mass percentage of 0.5%, U and 1.5% nano-reinforced phase and pure AZ91D Magnesium alloys were compared with grains and found to be consistent with the mass of nano-reinforced phase. The grain size of the magnesium-based composite material is significantly reduced, and the grain size of the magnesium-based composite material is significantly lower than that in the range of 0.5 to 0.1%. The grain of the magnesium-based metal is reduced by 60% to 75%. The grain of the magnesium-based composite material is about 100 micrometers to 150 micrometers. In this embodiment, when the nano-phase of the magnesium-based composite material is mass percentage 0. 5% to 2% of the carbon nanotubes, the grain of the magnesium-based composite material can be reduced by 60% to 75% compared with the grain of the AZ91D magnesium alloy. See Figure 6, when the magnesium-based composite material When the nano-reinforced phase is 5% to 2% of lanthanum carbide, the interface between the magnesium grains and the lanthanum carbide grains is clear, and there is no intermediate phase between the interfaces. See Figure 7, The magnesium-based composite material is tested for the tensile strength of the magnesium-based composite material of the carbon nanotubes of different mass percentages, and the magnesium-based composite material is found to have a mass percentage of the magnesium-based composite material of 1.5%. It has good tensile strength. [0013] Please refer to Figure 8, the nano-enhanced phase is different mass percentage of nanocarbon The elongation test of the magnesium-based composite material showed that the magnesium-based composite material had a good elongation when the mass percentage of the carbon-based composite material was 1.5%. The above test showed that the magnesium-based composite material was passed through the magnesium-based composite material. The addition of a nano reinforcing phase to the metal effectively refines the crystal grains, improves the tensile strength and elongation of the magnesium-based composite material, facilitates the manufacture of the earphone housing, and facilitates the improvement of the earphone housing. Strength and durability, please refer to Table 1 for specific test data. [0014] Table 1 Tensile Strength and Elongation Test Data Sheet 099120739 Form No. A0101 Page 6 of 26 0992036590-0 201201594 Ο 〇[0016] Nano Carbon Tube mass percentage 0% 0. 01% 0. 5% 1% 1.5% 2% Tensile strength (MPa) 86 86.5 89 96 104 90 Elongation (%) 0. 92 0.93 1.1 1. 26 1. 28 0 67 The manufacturing method of the casing may be thixoforming, die casting, powder metallurgy or mechanical forming. Specifically, the powder, fiber or whisker of the nano reinforcing phase may be added to the molten magnesium-based metal, and the earphone shell may be obtained by thixoforming or die casting, or the powder of the magnesium-based metal may be The earphone housing is prepared by a powder metallurgy method by mixing with the nano reinforcing phase. Alternatively, the magnesium-based composite material may be preformed into a blank body, and the earphone housing may be formed by mechanical processing. In this embodiment, the method for preparing the magnesium-based composite material comprises the following steps: [0017] First, a magnesium-based metal and a nano-reinforced phase are provided; [0018] Next, the nano-reinforced phase is at 460 ° C to 580 ° Adding molten magnesium-based metal to C to form a mixture; [0019] again, ultrasonically treating the mixture at 620 ° C to 650 ° C to uniformly disperse the nano reinforcing phase in the magnesium-based metal; and [0020] Finally, the mixture is cast at 650 ° C to 680 ° C to form magnesium 099120739 Form No. A0101 Page 7 / Total 26 Page 0992036590-0 201201594 Base composite chain. [0021] The temperature in the above mixing, ultrasonic treatment, and casting process is gradually increased in three stages, which is advantageous for grain refinement in the magnesium-based composite material, and the above processes are all performed in a protective gas to prevent The magnesium-based metal is oxidized. The shielding gas may be selected from one or more of an inert gas and nitrogen, and the shielding gas in this embodiment is preferably nitrogen. [0022] Specifically, the magnesium-based metal may be an AZ91D magnesium alloy, and the nano reinforcing phase may be a carbon nanotube or a tantalum carbide. The molten magnesium-based metal may be disposed in a container filled with a protective gas. In the process of adding the nano reinforcing phase to the molten magnesium-based metal, the mixture in the vessel may be further mechanically stirred by a stirrer to initially mix the nano reinforcing phase and the molten magnesium-based metal to obtain a mixed pulp. material. [0023] The ultrasonic treatment may be performed by placing the mixture together with the container in a high-energy ultrasonic vibration stirring device, and shaking for a period of time under ultrasonic waves of a certain frequency to obtain a uniformly mixed polymer. The frequency of the ultrasonic waves is from 15 kHz to 20 kHz, and the frequency of the ultrasonic waves in this embodiment is preferably 15 kHz. The time of the ultrasonic treatment is from 5 minutes to 40 minutes, preferably 30 minutes. The ultrasonic frequency of the ultrasonic vibration used in the technical solution is selected to be 15-20 kHz, and the frequency of the ultrasonic wave used in the technical solution is low compared to the general ultrasonic frequency of 48 kHz, and the ultrasonic oscillating device is a high energy. The ultrasonic oscillating stirring device has a large amplitude, so that the light metal particles in the light metal melting soup can be vigorously moved, so that the nano-sized particle reinforcing body can be evenly distributed in the light metal broth to obtain a uniform mixture. Slurry. 099120739 Form No. A0101 Page 8 of 26 0992036590-0 201201594 [0024] In the process of washing the town, the > see the slurry can be sea-pillar to the mold and solidified in the cooling to form a sub-composite composite. Further, the money-based composite material can be treated by a squeezing process. Through the extrusion molding process, the nano reinforcing phase is redistributed in the mixture, and the dispersion is more uniform, which further improves the strength and the drawability of the magnesium-based composite. [0025] The green body may be further formed by die casting to obtain the earphone housing. A carbon nanotube was used as a magnesium-based metal as a magnesium-based metal, and the mass percentage of the nano-reinforced phase was 5%. The shell was prepared by a die-casting method. Please refer to Table 2 'The shell made of magnesium-based composite material has better yield strength than the plastic shell and AZ91D town alloy shell, and the latter is lower than AZ91D town alloy. [0026] [0027] Table 2 different material shell performance comparison parameters plastic (PC + ABS) density (g / cm3) 1. 07 ... called * '! ·, :: :: yield strength (MPa) 39 AZ 91D no alloy
099120739 的殼體的耳機進行聲學測試，並與㈣D鎂合金殼體的耳 機及塑膠殼體的耳機進行料發現，採用 料的殼體制成的耳機與採用AZ9_合金殼體的耳機和採 用塑膠殼體的耳機具有基本一致的頻率回應曲線及阻抗 曲線。然而’請參_9，制制基複合材料的殼體制 第9頁/共26頁 表單煸號A0101 0992036590-0 201201594 成的耳機在三種測試的耳機中具有最小的總諧波失真。 在20赫茲至50赫茲頻率範圍内，採用鎂基複合材料的殼 體的耳機的總諧波失真比AZ91D鎂合金殼體的耳機減少約 10% ° [0028] 請參閱圖10至12，從採用不同材料的殼體的瀑布分析圖 中可以看出，在20赫茲至30赫茲範圍，採用鎂基複合材 料殼體的耳機音頻振幅最低，從而使這種耳機的總諧波 失真最小，而在100赫兹至600赫茲範圍，採用鎮基複合 材料殼體的耳機比其他兩種耳機波形均一，可知這種耳 / 機具有發聲效果清晰的特點。 [0029] 本技術方案採用鎂基複合材料作為耳機的殼體，可以縮 短耳機發聲的混響，減少耳機殼體共振，使發聲效果清 晰，從而提高耳機的音質。並且，鎂基複合材料的殼體 比塑膠殼體更為堅固耐用，由於該殼體具有較好的強度 ，在滿足強度需要的前提下，可採用較小的壁厚，從而 減輕耳機的總體質量，並使耳機内部空間增大。另外， 鎂基複合材料具有良好的導熱性，利於耳機散熱。 1 [0030] 本領域技術人員可以理解，本技術方案雖然以耳機作為 具體實施例進行說明，然而由於所述殼體因製造殼體的 材料本身具有上述優點，因此具有所述殼體的其他發聲 裝置也能具有發聲效果較好，質量較輕，堅固耐用且易 於散熱的優點。 [0031] 綜上所述，本發明確已符合發明專利之要件，遂依法提 出專利申請。惟，以上所述者僅為本發明之較佳實施例 099120739 表單編號A0101 第10頁/共26頁 0992036590-0 201201594 [0032] ，自不能以此限制本案之申請專利範圍。舉凡習知本案 技藝之人士援依本發明之精神所作之等效修飾或變化， 皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1為本技術方案實施例耳機的結構示意圖。 [0033] 圖2為AZ91D鎂合金50倍光學顯微鏡照片。 [0034] 圖3為具有質量百分比為0. 5%的奈米增強相的鎂基複合材 料50倍光學顯微鏡照片。 〇 [0035] 圖4為具有質量百分比為1 %的奈米增強相的鎂基複合材料 50倍光學顯微鏡照片。 [0036] 圖5為具有質量百分比為1. 5%的奈米增強相的鎂基複合材 料50倍光學顯微鏡照片。 [0037] 圖6為鎂基複合材料中碳化矽與鎂晶粒介面的高解析度透 射電鏡照片。 [0038] ❹ 圖7為具有不同質量百分含量的奈米增強相的鎂基複合材 料抗拉強度的測試資料圖。 [0039] 圖8為具有不同質量百分含量的奈米增強相的鎂基複合材 料伸長率的測試資料圖。 [0040] 圖9為具有不同材料的耳機殼體的耳機的總諧波失真曲線 測試資料圖。 [0041] 圖10為具有塑膠耳機殼體的耳機的瀑布分析圖。 [0042] 圖11為具有AZ91D鎂合金耳機殼體的耳機的瀑布分析圖。 099120739 表單編號A0101 第11頁/共26頁 0992036590-0 201201594 [0043] 圖12為具有鎂基複合材料耳機殼體的耳機的瀑布分析圖 〇 【主要元件符號說明】 [0044] 耳機：10 [0045] 前部：12 [0046] 揚聲器：1 4 [0047] 後部：16 0992036590-0 099120739 表單編號A0101 第12頁/共26頁The earphones of the housing of 099120739 are acoustically tested, and the earphones of the (four) D-magnesium alloy casing and the earphones of the plastic casing are used for material discovery. The earphones made of the material casing and the earphones and plastic shells using the AZ9_ alloy casing are used. The body of the headset has a substantially uniform frequency response curve and impedance curve. However, please refer to _9, the shell of the base composite material. Page 9 of 26 Form No. A0101 0992036590-0 201201594 The earphones have the smallest total harmonic distortion in the three tested headphones. In the frequency range of 20 Hz to 50 Hz, the total harmonic distortion of the earphones of the housing using the magnesium-based composite material is reduced by about 10% compared to the earphones of the AZ91D magnesium alloy casing. [0028] Please refer to Figures 10 to 12, In the waterfall analysis of the shells of different materials, it can be seen that in the range of 20 Hz to 30 Hz, the headphone audio amplitude of the magnesium-based composite housing is the lowest, so that the total harmonic distortion of the earphone is minimized, and at 100 In the Hertz to 600 Hz range, the earphones with the town-based composite housing are more uniform than the other two earphones. It is known that the ear/machine has a clear sounding effect. [0029] The technical solution adopts a magnesium-based composite material as a casing of the earphone, which can shorten the reverberation of the earphone sound, reduce the resonance of the earphone casing, and make the sounding effect clear, thereby improving the sound quality of the earphone. Moreover, the shell of the magnesium-based composite material is more durable and durable than the plastic shell. Since the shell has good strength, a small wall thickness can be adopted under the premise of meeting the strength requirement, thereby reducing the overall quality of the earphone. And increase the internal space of the headphones. In addition, the magnesium-based composite material has good thermal conductivity, which is advantageous for heat dissipation of the earphone. [0030] It will be understood by those skilled in the art that although the present invention is described with the earphone as a specific embodiment, since the housing has the above advantages due to the material itself for manufacturing the housing, other sounding of the housing is provided. The device also has the advantages of better sounding effect, lighter weight, durability and easy heat dissipation. [0031] In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only the preferred embodiment of the present invention. 099120739 Form No. A0101 Page 10 of 26 0992036590-0 201201594 [0032], the scope of the patent application of this case cannot be limited. Equivalent modifications or variations made by those skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of an earphone according to an embodiment of the present technical solution. 2 is a 50x optical microscope photograph of the AZ91D magnesium alloy. Figure 3 is a 50x optical micrograph of a magnesium-based composite material having a nano-reinforced phase with a mass percentage of 0.5%. 4 [0035] FIG. 4 is a 50x optical micrograph of a magnesium-based composite material having a nano-weighted phase of 1% by mass. 5 is a 50-fold optical micrograph of a magnesium-based composite material having a nano-weighted phase of 1.5% by mass. [0036] FIG. 6 is a high-resolution transmission electron micrograph of a tantalum carbide and magnesium grain interface in a magnesium-based composite material. [0038] FIG. 7 is a test data sheet showing the tensile strength of a magnesium-based composite material having different mass percentages of nano reinforcing phase. 8 is a test data diagram of elongation of a magnesium-based composite material having different mass percentages of nano-reinforced phase. [0039] FIG. [0040] FIG. 9 is a graph showing a total harmonic distortion curve test data of an earphone having earphone housings of different materials. [0041] FIG. 10 is a waterfall analysis diagram of an earphone with a plastic earphone housing. [0042] FIG. 11 is a waterfall analysis diagram of an earphone with an AZ91D magnesium alloy earphone housing. 099120739 Form No. A0101 Page 11 of 26 0992036590-0 201201594 [0043] Figure 12 is a waterfall analysis diagram of a headphone housing with a magnesium-based composite earphone housing [Key component symbol description] [0044] Headphones: 10 [ 0045] Front: 12 [0046] Speaker: 1 4 [0047] Rear: 16 0992036590-0 099120739 Form No. A0101 Page 12 of 26