WO2021179665A1 - Sound generation apparatus and electronic device - Google Patents
Sound generation apparatus and electronic device Download PDFInfo
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- WO2021179665A1 WO2021179665A1 PCT/CN2020/129587 CN2020129587W WO2021179665A1 WO 2021179665 A1 WO2021179665 A1 WO 2021179665A1 CN 2020129587 W CN2020129587 W CN 2020129587W WO 2021179665 A1 WO2021179665 A1 WO 2021179665A1
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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
- H04R9/022—Cooling arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
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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
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- H—ELECTRICITY
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Definitions
- the present invention relates to the technical field of acoustic devices, and more specifically, the present invention relates to a sound generating device and electronic equipment.
- the sounding device is a kind of transducer device that can convert an electric signal into an acoustic signal.
- the acoustic performance and reliability of the sounding device are very important and need to be paid attention to.
- the temperature that they can usually withstand is about 110°C.
- the temperature of the sounding device is usually limited and protected.
- the existing protection schemes usually bring about two serious drawbacks: one is that the acoustic performance of the sound device is limited, resulting in the failure of its maximum loudness. The second is that the protection effect is not ideal, and one of the heat sources-the voice coil is easily burned, which affects the service life of the sound generating device.
- An object of the present invention is to provide a new technical solution for a sound generating device and electronic equipment.
- a sound generating device which includes a magnetic circuit system and a vibration system;
- the magnetic circuit system includes a magnetic yoke, and a central magnetic circuit part and a side magnetic circuit part arranged on the magnetic yoke, and a magnetic gap is formed between the central magnetic circuit part and the side magnetic circuit part; the vibration The system includes a voice coil, and the voice coil is inserted in the magnetic gap;
- At least a partial surface of the magnetic circuit system is coated with a layer of heat radiation material.
- the heat radiation material layer is provided on at least one surface of the yoke.
- the heat radiation material layer is arranged on the surface of the magnetic gap.
- the central magnetic circuit part includes a central magnet and a first washer fixed on top of the central magnet, and the heat radiation material layer is provided on at least one of the central magnet and the first washer On the surface.
- the side magnetic circuit portion includes a side magnet and a second washer fixed on the top of the side magnet, and the heat radiation material layer is provided on at least one of the side magnet and the second washer On the surface.
- the material of the heat radiation material layer is a material with a heat radiation coefficient ⁇ 0.7.
- the material of the heat radiation material layer is any one of carbon nano particles, graphene particles, carbon tubes, boron nitride particles, silicon carbide particles, and aluminum nitride particles.
- the thickness of the heat radiation material layer is 3 ⁇ m-20 ⁇ m.
- the thickness of the heat radiation material layer is 5 ⁇ m.
- an electronic device includes the sound emitting device as described in any one of the above.
- the magnetic circuit system is improved. At least part of the surface of the magnetic circuit system is coated with a material with a higher thermal radiation coefficient, which can significantly improve the thermal radiation coefficient on the surface of the magnetic circuit system.
- a material with a higher thermal radiation coefficient which can significantly improve the thermal radiation coefficient on the surface of the magnetic circuit system.
- Fig. 1 is a schematic diagram of the structure of a conventional sound generating device.
- Fig. 2 is a cross-sectional view of a sound generating device according to an embodiment of the present disclosure.
- FIG. 3 is a schematic diagram of FIG. 2 from another perspective.
- Fig. 4 is a top view of a sound emitting device according to another embodiment of the present disclosure.
- Fig. 5 is a partial cross-sectional view of Fig. 4.
- Fig. 6 is a cross-sectional view of a sound emitting device according to another embodiment of the present disclosure.
- Fig. 7 is a temperature rise curve diagram of a conventional sound generating device and the sound generating device of the present disclosure.
- a sound generating device is provided.
- the sound generating device can be used in many different types of electronic products such as smart phones, notebook computers, tablet computers, navigators, smart watches, VR devices, AR devices, etc., and its applications are relatively wide.
- the sound generating device provided by the embodiment of the present invention includes a device housing, and a containing cavity is formed inside the device housing; the sound generating device further includes a magnetic circuit system and a vibration system, and the magnetic circuit system and the vibration system are together It is contained in the containing cavity.
- the magnetic circuit system includes a magnetic yoke 5, and a central magnetic circuit part and a side magnetic circuit part arranged on the magnetic yoke 5.
- a magnetic gap 6 is formed between the central magnetic circuit part and the side magnetic circuit part.
- the vibration system includes a voice coil 7 and a diaphragm, and the voice coil 7 is inserted in the magnetic gap 6, and the diaphragm is arranged on the voice coil 7. Wherein, at least a partial surface of the magnetic circuit system is coated with a layer of heat radiation material 8.
- the voice coil 7 in the vibration system When the sound device is in working condition, the voice coil 7 in the vibration system will generate a lot of heat as a heat source. As shown in Figure 1, the unmarked arrow in Figure 1 indicates the heat dissipation direction of the voice coil 7, and the heat of the voice coil 7 After radiating to the inner surface of the magnetic circuit system, it will first be absorbed by the surface of the components in the magnetic circuit system, and then the heat is radiated into the air through the outer surface of the magnetic circuit system, so as to realize the heat dissipation and cooling of the entire sound generating device.
- the magnetic circuit system itself has a poor heat dissipation effect due to factors such as materials, and cannot quickly and timely dissipate the heat generated in the sounding device into the air, which will cause the sounding device The temperature inside is too high, even burning the voice coil.
- the sound generating device provided by the embodiment of the present invention appropriately improves the magnetic circuit system therein. Specifically, at least a partial surface of the magnetic circuit system is coated with a material with a higher thermal radiation coefficient, which helps to increase the thermal radiation coefficient on the surface of the magnetic circuit system, thereby achieving the purpose of accelerating heat dissipation.
- the design of the present invention helps the sound generating device to have a good heat dissipation effect under a long-term working state, and will not damage the internal parts-such as the voice coil 7 and the like, due to excessive temperature.
- the magnetic circuit system Since the heat radiation material layer 8 is preformed on at least part of the surface of the magnetic circuit system, the magnetic circuit system has good heat conduction and heat dissipation capabilities, and can quickly and timely conduct the heat inside the sound generating device to the outside of the sound generating device. , And disperse into the air to achieve a good cooling effect on the sound device. It can avoid the phenomenon of voice coil burning.
- the sound generating device provided by the embodiment of the present invention has a good heat dissipation effect, and will not cause the internal parts of the sound generating device to be burned due to excessively high internal temperature due to the long-term working state.
- the design of the present invention does not affect the acoustic performance of the sound generating device, so that the sound generating device has the characteristics of large loudness and good sound quality.
- the heat radiation material is attached to at least a part of the surface of the magnetic circuit system by coating to form the heat radiation material layer 8.
- the material with relatively high thermal emissivity is made into nano-particles, and then mixed with the corresponding solvent (for example, using volatile materials) to form a mixture, and then the formed mixture is coated Cover it on the surface of the endothermic, and finally bake it to evaporate the solvent.
- the coating method adopted in the embodiment of the present invention is relatively simple, easy to operate, and will not cause difficulty in production, and can firmly combine the heat radiation material and the surface of the heat absorber to form an integral structure.
- other combining methods well known to those skilled in the art can also be used, which is not limited by the present invention.
- the heat radiation material layer 8 can be selectively coated on the appropriate part of the magnetic circuit system, of course, the heat radiation material layer 8 can also be coated on the surface of the entire magnetic circuit system to maximize the heat dissipation effect. .
- Those skilled in the art can flexibly choose the specific position for coating the heat radiation material 8 on the magnetic circuit system according to actual needs, and there is no limitation on this.
- the heat radiation material layer 8 is provided on at least one surface of the yoke 5.
- the yoke 5 carries the central magnetic circuit part and the side magnetic circuit part. It has a large surface area, which helps to coat the heat radiation material layer 8 on its surface in a large range.
- the heat generated by the voice coil 7 during operation can be transferred by the magnetic
- the heat radiation material layer 8 on the yoke 5 is quickly and timely dissipated to reduce the temperature of the voice coil 7, so as to avoid the bad phenomenon of voice coil burning.
- a heat radiation material layer 8 is coated on the side of the yoke 5 facing the central magnetic circuit portion.
- a heat radiation material layer 8 is coated on the side of the yoke 5 facing away from the central magnetic circuit portion.
- the heat radiation material layer 8 can also be coated on the side of the yoke 5 facing the central magnetic circuit part and the side facing away from the central magnetic circuit part, respectively. Good to improve heat dissipation performance. Those skilled in the art can make adjustments flexibly according to actual needs, and there is no limitation on this.
- a method may also be adopted, that is, a recessed area is formed in advance on at least one surface of the yoke 5. At this time, the heat radiation material is embedded in the recessed area.
- This method of arranging the heat radiation material layer 8 does not occupy the space in the thickness direction of the yoke 5, and therefore does not increase the thickness of the yoke 5.
- the heat radiation material layer 8 is disposed on the surface of the magnetic gap 6.
- the voice coil 7 in the vibration system is suspended in the magnetic gap 6 of the magnetic circuit system, and the heat radiation material layer 8 is coated on the surface of the magnetic gap 6 to quickly radiate the heat generated by the voice coil 7 to the outside. In this way, the voice coil 7 can also have a good cooling effect.
- the trajectory of the heat radiation material layer 8 is preferably along the entire magnetic gap 6 to achieve uniformity, Quickly dissipate heat to avoid the situation that local temperature is not suitable for dissipating.
- the central magnetic circuit part includes a central magnet 3 and a first washer 1 fixed on top of the central magnet 3, and the heat radiation material layer 8 is arranged on the At least one of the central magnet 3 and the first washer 1 is on the surface. That is to say, when coating the heat radiation material layer 8 on the central magnetic circuit part of the magnetic circuit system, you can choose to coat the heat radiation material layer 8 on the surface of the central magnet 3, or you can coat the heat radiation material layer 8 on the surface of the first washer 1.
- the surface of is coated with a heat radiation material layer 8, of course, a heat radiation material layer can also be coated on the surfaces of the central magnet 3 and the first washer 1 respectively.
- the heat generated during the operation of the voice coil 7 can be quickly dissipated to the outside through the central magnetic circuit part to achieve the purpose of cooling down.
- the yoke 5 in addition to the central magnetic circuit part, is also provided with side magnetic circuit parts around the central magnetic circuit part.
- the side magnetic circuit part includes a side magnet 4 and a second washer 2 fixed on the top of the side magnet 4.
- the heat radiation material layer 8 is formed between the side magnet 4 and the side magnet 4 and the second washer 2 At least one of the second washers 2 is on the surface.
- the heat radiation material layer 8 when coating the heat radiation material layer 8 on the side magnetic circuit part, you can choose to coat the heat radiation material layer 8 on the surface of the side magnet 4, or coat the surface of the second washer 2
- the heat radiating material layer 8 can also be coated with a heat radiating material layer 8 on the surface of the side magnet 4 and the second washer 2 respectively.
- the heat produced by the voice coil 7 can be quickly dissipated to the outside through the side magnetic circuit part, so as to achieve the purpose of cooling down and avoiding coil burning.
- the position where the heat radiation material layer 8 can be coated on the magnetic circuit system includes the magnetic gap 6, the central magnetic circuit part, the side magnetic circuit part and the yoke 5.
- One or more of them can be individually selected to be coated with the heat radiation material layer 8.
- the material used for the heat radiation material layer 8 is a material with a relatively high heat radiation coefficient.
- a material with a thermal radiation coefficient ⁇ 0.7 can be used.
- the material of the heat radiation material layer 8 is nano carbon particles.
- the reasons why nano-carbon can improve the heat radiation efficiency are: (1) The color of nano-carbon is black. Black is good for absorbing/emitting infrared light and heat radiation. The operating temperature of the sound device is about 100°C, which belongs to infrared light and heat. radiation. (2) The thermal radiation coefficient of nano-carbon itself is relatively high, for example, the thermal radiation coefficient can reach 0.98, while the thermal radiation coefficient of the electroplated nickel/zinc on the surface of the existing magnetic circuit system is only 0.05. (3) The particle size of the nano-carbon particles is relatively small, which helps to increase the heat dissipation surface area and finally achieve a good heat dissipation effect.
- the heat radiation material layer 8 is not limited to the use of the aforementioned nano-carbon particles, and other materials with a relatively high heat radiation coefficient, for example, heat radiation coefficient ⁇ 0.7 can also be used.
- the material of the heat radiation material layer 8 may also be any one of graphene particles, carbon tubes, boron nitride particles, silicon carbide particles, and aluminum nitride particles, for example. Those skilled in the art can flexibly choose according to the heat dissipation requirements, and there is no restriction on this.
- the thermal radiation material layer 8 on the magnetic circuit system, the heat dissipation efficiency and effect of the magnetic circuit system can be significantly improved, and the heat generated by the voice coil 7 can be dissipated in time. In turn, the temperature of the entire sounding device in the working state is reduced, and the temperature of the sounding device is prevented from being too high.
- the thickness of the heat radiation material layer 8 should be reasonably controlled to avoid the thickness of the heat radiation material layer 8 formed being too thick, which would cause the entire magnetic circuit system to be unfavorable for assembly.
- the thickness range of the heat radiation material layer 8 can be controlled to be 3 ⁇ m-20 ⁇ m.
- Those skilled in the art can determine the actual thickness of the heat radiation material layer 8 according to the sensitivity of different positions in the magnetic circuit system to the thickness. Taking the magnetic gap 6 as an example, generally speaking, the minimum dimension of the width of the magnetic gap 6 is about 0.4 mm, so the heat radiation material layer 8 basically does not affect the space.
- coating the heat radiation material layer 8 on at least part of the surface of the magnetic circuit system for example, coating the surface of the first washer 1 with a layer of nano-carbon material with a thickness of 3 ⁇ m-20 ⁇ m. Reduce the temperature rise of the sound device by about 3°C.
- the thickness of the heat radiation material layer 8 is 5 ⁇ m.
- Curve a is the temperature rise curve of the magnetic circuit system in the conventional sounding device.
- Curve b is the temperature rise curve of the magnetic circuit system in the sound generating device provided by the embodiment of the present invention.
- the comparison shows that curve b is significantly lower than curve a. In other words, the temperature of the magnetic circuit system provided with the heat radiation material layer 8 is relatively low, and it has a good heat dissipation effect.
- the voice coil is used as a heat source, and the heat generated by the voice coil can be quickly and timely discharged through the magnetic circuit system to avoid the phenomenon of the voice coil being overheated and burned, and the service life of the voice coil can be improved , which in turn helps to increase the service life of the entire sounding device.
- an electronic device is also provided.
- the electronic equipment includes the sound emitting device as described in any one of the above.
- the electronic device may be, for example, a mobile phone, a notebook computer, a tablet computer, a navigator, a VR device, an AR device, a smart watch, etc., which is not limited in the present invention.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
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- Acoustics & Sound (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Disclosed are a sound generation apparatus and an electronic device. The sound generation apparatus comprises a magnetic circuit system and a vibration system, wherein the magnetic circuit system comprises a magnetic yoke, and a center magnetic circuit part and a side magnetic circuit part, which are arranged on the magnetic yoke, a magnetic gap being formed between the center magnetic circuit part and the side magnetic circuit part; and the vibration system comprises a voice coil, which is inserted in the magnetic gap. At least part of the surface of the magnetic circuit system is coated with a layer of thermal radiation material. One technical effect of the present invention lies in: good heat dissipation and cooling effects can be achieved on the sound generation apparatus during operation, so as to avoid the undesirable phenomenon of burning the voice coil.
Description
本发明涉及声学器件技术领域,更具体地,本发明涉及一种发声装置以及电子设备。The present invention relates to the technical field of acoustic devices, and more specifically, the present invention relates to a sound generating device and electronic equipment.
近年来,随着人们对生活品质要求的不断提高,高品质的音乐享受逐渐普及于众,用于播放音频的发声装置被大量应用到诸如手机、平板电脑、笔记本电脑、导航仪以及智能穿戴设备等多种不同类型的电子产品中。发声装置是一种能将电信号转换成声信号的换能器件,发声装置的声学性能与可靠性是非常重要,需要引起重视。In recent years, with the continuous improvement of people’s requirements for quality of life, high-quality music enjoyment has gradually become popular among the public, and sound generating devices used to play audio have been widely used in mobile phones, tablets, laptops, navigators, and smart wearable devices. In many different types of electronic products. The sounding device is a kind of transducer device that can convert an electric signal into an acoustic signal. The acoustic performance and reliability of the sounding device are very important and need to be paid attention to.
随着智能手机的迅速发展,使得智能手机的应用越来越广泛,用户们对手机各方面的要求也越来越高。在使用智能手机时,无论是玩游戏、看视频或者是听音乐,通常都需要有较高品质的音效,这就对应用于智能手机内的发声装置提出了更高的要求。不仅要求发声装置具有响度大的特点,还要求发声装置能够兼具良好的音质效果。然而,发声装置的高响度往往也伴随着高功率而就现有的发声装置来看,目前其功率已经提升到1W左右,但发声装置自身声效率还是比较低的,输入的功率大部分都转换为了热量。实际上,在发声装置的内部,有许多很多零部件的耐温性能不好,其通常能耐受的温度约在110℃。为了防止发声装置内的零部件因高温被损伤、损坏,通常要对发声装置的温度进行限定保护。但现有的保护方案通常会带来两个严重的弊端:其一是发声装置的声学性能被限制,导致其最大响度无法发挥。其二是保护的效果并不理想,而且其中的热源之一—音圈很容易被烧毁,影响发声装置的使用寿命。With the rapid development of smart phones, the applications of smart phones have become more and more extensive, and users have higher and higher requirements for all aspects of mobile phones. When using a smart phone, whether it is playing games, watching videos, or listening to music, usually high-quality sound effects are required, which puts higher requirements on the sound generating devices used in smart phones. Not only is the sounding device required to have the characteristics of large loudness, but also the sounding device is required to have both good sound quality effects. However, the high loudness of the sounding device is often accompanied by high power. As far as the existing sounding device is concerned, the current power has been increased to about 1W, but the sound efficiency of the sounding device itself is still relatively low, and most of the input power is converted For the heat. In fact, in the interior of the sound device, there are many parts that have poor temperature resistance, and the temperature that they can usually withstand is about 110°C. In order to prevent the components in the sounding device from being damaged or damaged due to high temperature, the temperature of the sounding device is usually limited and protected. However, the existing protection schemes usually bring about two serious drawbacks: one is that the acoustic performance of the sound device is limited, resulting in the failure of its maximum loudness. The second is that the protection effect is not ideal, and one of the heat sources-the voice coil is easily burned, which affects the service life of the sound generating device.
由此可见,非常有必要研究一种新的技术,以解决现有技术中存在的问题。It can be seen that it is very necessary to study a new technology to solve the problems existing in the existing technology.
发明内容Summary of the invention
本发明的一个目的是提供一种发声装置以及电子设备的新技术方案。An object of the present invention is to provide a new technical solution for a sound generating device and electronic equipment.
根据本发明的第一方面,提供了一种发声装置,其包括磁路***和振动***;According to the first aspect of the present invention, a sound generating device is provided, which includes a magnetic circuit system and a vibration system;
所述磁路***包括磁轭,以及设置在所述磁轭上的中心磁路部分和边磁路部分,所述中心磁路部分和所述边磁路部分之间形成磁间隙;所述振动***包括音圈,所述音圈插设于所述磁间隙中;The magnetic circuit system includes a magnetic yoke, and a central magnetic circuit part and a side magnetic circuit part arranged on the magnetic yoke, and a magnetic gap is formed between the central magnetic circuit part and the side magnetic circuit part; the vibration The system includes a voice coil, and the voice coil is inserted in the magnetic gap;
其中,在所述磁路***的至少局部表面上涂覆有热辐射材料层。Wherein, at least a partial surface of the magnetic circuit system is coated with a layer of heat radiation material.
可选地,所述热辐射材料层设置在所述磁轭的至少一个表面上。Optionally, the heat radiation material layer is provided on at least one surface of the yoke.
可选地,所述热辐射材料层设置在所述磁间隙的表面上。Optionally, the heat radiation material layer is arranged on the surface of the magnetic gap.
可选地,所述中心磁路部分包括中心磁铁和固定在所述中心磁铁顶部的第一华司,所述热辐射材料层设置在所述中心磁铁和所述第一华司中的至少一个表面上。Optionally, the central magnetic circuit part includes a central magnet and a first washer fixed on top of the central magnet, and the heat radiation material layer is provided on at least one of the central magnet and the first washer On the surface.
可选地,所述边磁路部分包括边磁铁和固定在所述边磁铁顶部的第二华司,所述热辐射材料层设置在所述边磁铁和所述第二华司中的至少一个表面上。Optionally, the side magnetic circuit portion includes a side magnet and a second washer fixed on the top of the side magnet, and the heat radiation material layer is provided on at least one of the side magnet and the second washer On the surface.
可选地,所述热辐射材料层的材质为热辐射系数≥0.7的材料。Optionally, the material of the heat radiation material layer is a material with a heat radiation coefficient ≥ 0.7.
可选地,所述热辐射材料层的材质为纳米碳颗粒、石墨烯颗粒、碳管、氮化硼颗粒、碳化硅颗粒和氮化铝颗粒中的任意一种。Optionally, the material of the heat radiation material layer is any one of carbon nano particles, graphene particles, carbon tubes, boron nitride particles, silicon carbide particles, and aluminum nitride particles.
可选地,所述热辐射材料层的厚度为3μm-20μm。Optionally, the thickness of the heat radiation material layer is 3 μm-20 μm.
可选地,所述热辐射材料层的厚度为5μm。Optionally, the thickness of the heat radiation material layer is 5 μm.
根据本发明的第二方面,提供了一种电子设备。所述电子设备包括如上任意一项所述的发声装置。According to a second aspect of the present invention, an electronic device is provided. The electronic equipment includes the sound emitting device as described in any one of the above.
本发明实施例提供的发声装置,对其中的磁路***进行了改良,在磁路***的至少局部表面上涂覆有具有较高热辐射系数的材料,能明显提升磁路***表面的热辐射系数,以达到加快散热的目的。该设计有助于使发声装置在长期的工作状态下具有良好的散热效果,不会因温度过高而损伤到内部的零部件-例如音圈等,以延长发声装置的使用寿命。本发明所要实 现的技术任务或者所要解决的技术问题是本领域技术人员从未想到的或者没有预期到的,故本发明是一种新的技术方案。In the sound generating device provided by the embodiment of the present invention, the magnetic circuit system is improved. At least part of the surface of the magnetic circuit system is coated with a material with a higher thermal radiation coefficient, which can significantly improve the thermal radiation coefficient on the surface of the magnetic circuit system. , In order to achieve the purpose of accelerating heat dissipation. This design helps the sound device to have a good heat dissipation effect under long-term working conditions, and will not damage the internal parts-such as the voice coil, etc. due to excessive temperature, so as to extend the service life of the sound device. The technical task to be achieved or the technical problem to be solved by the present invention has never been thought of or anticipated by those skilled in the art, so the present invention is a new technical solution.
通过以下参照附图对本发明的示例性实施例的详细描述,本发明的其它特征及其优点将会变得清楚。Through the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, other features and advantages of the present invention will become clear.
被结合在说明书中并构成说明书的一部分的附图示出了本发明的实施例,并且连同其说明一起用于解释本发明的原理。The drawings incorporated in the specification and constituting a part of the specification illustrate the embodiments of the present invention, and together with the description are used to explain the principle of the present invention.
图1是常规的发声装置的结构示意图。Fig. 1 is a schematic diagram of the structure of a conventional sound generating device.
图2是根据本公开一个实施例提供的发声装置的剖视图。Fig. 2 is a cross-sectional view of a sound generating device according to an embodiment of the present disclosure.
图3是图2另一视角的示意图。FIG. 3 is a schematic diagram of FIG. 2 from another perspective.
图4是根据本公开又一个实施例提供的发声装置的俯视图。Fig. 4 is a top view of a sound emitting device according to another embodiment of the present disclosure.
图5是图4的局部剖视图。Fig. 5 is a partial cross-sectional view of Fig. 4.
图6是根据本公开另一个实施例提供的发声装置的剖视图。Fig. 6 is a cross-sectional view of a sound emitting device according to another embodiment of the present disclosure.
图7是常规的发声装置和本公开的发声装置的温升曲线图。Fig. 7 is a temperature rise curve diagram of a conventional sound generating device and the sound generating device of the present disclosure.
附图标记说明:Description of reference signs:
1-第一华司,2-第二华司,3-中心磁铁,4-边磁铁,5-磁轭,6-磁间隙,7-音圈,8-热辐射材料层。1-first washer, 2-second washer, 3-center magnet, 4-side magnet, 5-yoke, 6-magnetic gap, 7-voice coil, 8-heat radiation material layer.
现在将参照附图来详细描述本发明的各种示例性实施例。应注意到:除非另外具体说明,否则在这些实施例中阐述的部件和步骤的相对布置、数字表达式和数值不限制本发明的范围。Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless specifically stated otherwise, the relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.
以下对至少一个示例性实施例的描述实际上仅仅是说明性的,决不作为对本发明及其应用或使用的任何限制。The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any limitation to the present invention and its application or use.
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论,但在适当情况下,所述技术、方法和设备应当被视为说明书的一部分。The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part of the specification.
在这里示出和讨论的所有例子中,任何具体值应被解释为仅仅是示例性的,而不是作为限制。因此,示例性实施例的其它例子可以具有不同的 值。In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiment may have different values.
应注意到:相似的标号和字母在下面的附图中表示类似项,因此,一旦某一项在一个附图中被定义,则在随后的附图中不需要对其进行进一步讨论。It should be noted that similar reference numerals and letters indicate similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings.
根据本发明的一个实施例,提供了一种发声装置。所述发声装置可以应用在例如智能手机、笔记本电脑、平板电脑、导航仪、智能手表、VR设备、AR设备等多种不同类型的电子产品中,其应用较为广泛。According to an embodiment of the present invention, a sound generating device is provided. The sound generating device can be used in many different types of electronic products such as smart phones, notebook computers, tablet computers, navigators, smart watches, VR devices, AR devices, etc., and its applications are relatively wide.
以下就本发明实施例提供的发声装置的具体结构进行详细说明。The specific structure of the sound generating device provided by the embodiment of the present invention will be described in detail below.
本发明实施例提供的发声装置,其包括有装置外壳,在所述装置外壳的内部形成容纳腔;所述发声装置还包括磁路***和振动***,所述磁路***和所述振动***一起被收容在所述容纳腔内。如图1所示,所述磁路***包括有磁轭5,以及设置在所述磁轭5上的中心磁路部分和边磁路部分。所述中心磁路部分和所述边磁路部分之间形成磁间隙6。所述振动***包括音圈7和振膜,且所述音圈7插设于所述磁间隙6中,所述振膜设置在所述音圈7上。其中,在所述磁路***的至少局部表面上涂覆有热辐射材料层8。The sound generating device provided by the embodiment of the present invention includes a device housing, and a containing cavity is formed inside the device housing; the sound generating device further includes a magnetic circuit system and a vibration system, and the magnetic circuit system and the vibration system are together It is contained in the containing cavity. As shown in FIG. 1, the magnetic circuit system includes a magnetic yoke 5, and a central magnetic circuit part and a side magnetic circuit part arranged on the magnetic yoke 5. A magnetic gap 6 is formed between the central magnetic circuit part and the side magnetic circuit part. The vibration system includes a voice coil 7 and a diaphragm, and the voice coil 7 is inserted in the magnetic gap 6, and the diaphragm is arranged on the voice coil 7. Wherein, at least a partial surface of the magnetic circuit system is coated with a layer of heat radiation material 8.
当发声装置处于工作状态时,振动***中的音圈7作为热源会产生出大量的热量,如图1所示,图1中未标号的箭头表示音圈7的散热方向,音圈7的热量辐射到磁路***的内表面后,会先被磁路***内的部件表面所吸收,之后再通过磁路***的外表面将热量辐射到空气中,从而实现整个发声装置的散热、降温。然而,在现有的发声装置中,磁路***由于材料等因素的影响,其本身存在散热效果不好,无法快速、及时地将发声装置内产生的热量散发到空气中,从而会导致发声装置内的温度过高,甚至烧毁音圈的情况。When the sound device is in working condition, the voice coil 7 in the vibration system will generate a lot of heat as a heat source. As shown in Figure 1, the unmarked arrow in Figure 1 indicates the heat dissipation direction of the voice coil 7, and the heat of the voice coil 7 After radiating to the inner surface of the magnetic circuit system, it will first be absorbed by the surface of the components in the magnetic circuit system, and then the heat is radiated into the air through the outer surface of the magnetic circuit system, so as to realize the heat dissipation and cooling of the entire sound generating device. However, in the existing sounding device, the magnetic circuit system itself has a poor heat dissipation effect due to factors such as materials, and cannot quickly and timely dissipate the heat generated in the sounding device into the air, which will cause the sounding device The temperature inside is too high, even burning the voice coil.
针对现有技术中的缺陷,本发明实施例提供的发声装置,对其中的磁路***进行了适当的改良。具体地,是在磁路***的至少局部表面上涂覆具有较高热辐射系数的材料,这样有助于提升磁路***表面的热辐射系数,进而达到加快散热的目的。本发明中的该设计有助于使发声装置在长期的工作状态下具有良好的散热效果,不会因温度过高而损伤到内部的零部件 -例如音圈7等。由于磁路***的至少部分表面上预先形成了热辐射材料层8,因此,使磁路***具备了良好的导热、散热能力,可以将发声装置内部的热量快速、及时的传导到发声装置的外部,并散发到空气中,以实现对发声装置良好的降温效果。可以很好的避免出现音圈烧圈的现象。In view of the defects in the prior art, the sound generating device provided by the embodiment of the present invention appropriately improves the magnetic circuit system therein. Specifically, at least a partial surface of the magnetic circuit system is coated with a material with a higher thermal radiation coefficient, which helps to increase the thermal radiation coefficient on the surface of the magnetic circuit system, thereby achieving the purpose of accelerating heat dissipation. The design of the present invention helps the sound generating device to have a good heat dissipation effect under a long-term working state, and will not damage the internal parts-such as the voice coil 7 and the like, due to excessive temperature. Since the heat radiation material layer 8 is preformed on at least part of the surface of the magnetic circuit system, the magnetic circuit system has good heat conduction and heat dissipation capabilities, and can quickly and timely conduct the heat inside the sound generating device to the outside of the sound generating device. , And disperse into the air to achieve a good cooling effect on the sound device. It can avoid the phenomenon of voice coil burning.
本发明实施例提供的发声装置,其具有良好的散热效果,不会因为处于长期工作状态下而导致发声装置内部温度过高而灼伤内部零部件的现象。并且,本发明中的设计还不会影响发声装置的声学性能,使发声装置具有响度大以及音质效果好的特点。The sound generating device provided by the embodiment of the present invention has a good heat dissipation effect, and will not cause the internal parts of the sound generating device to be burned due to excessively high internal temperature due to the long-term working state. In addition, the design of the present invention does not affect the acoustic performance of the sound generating device, so that the sound generating device has the characteristics of large loudness and good sound quality.
本发明实施例提供的发声装置,其中,采用涂覆的方式将热辐射材料附着在磁路***的至少局部表面上,以形成热辐射材料层8。具体来说:先将热辐射系数比较高的材料制成纳米颗粒状,再将其与相应的溶剂(例如,采用易挥发的材料)混合在一起形成混合料,之后再将形成的混合料涂覆在吸热物的表面上,最后经烘烤将其中的溶剂挥发掉即可。本发明实施例中所采用的涂覆方式比较简单,操作容易,不会给生产带来困难,而且可以使热辐射材料与吸热物的表面牢牢地结合在一起,以形成一个整体结构。当然,除了上述的涂覆方式之外,还可以采用本领域技术人员熟知的其它结合方式,本发明对此不作限制。In the sound generating device provided by the embodiment of the present invention, the heat radiation material is attached to at least a part of the surface of the magnetic circuit system by coating to form the heat radiation material layer 8. Specifically: the material with relatively high thermal emissivity is made into nano-particles, and then mixed with the corresponding solvent (for example, using volatile materials) to form a mixture, and then the formed mixture is coated Cover it on the surface of the endothermic, and finally bake it to evaporate the solvent. The coating method adopted in the embodiment of the present invention is relatively simple, easy to operate, and will not cause difficulty in production, and can firmly combine the heat radiation material and the surface of the heat absorber to form an integral structure. Of course, in addition to the above-mentioned coating method, other combining methods well known to those skilled in the art can also be used, which is not limited by the present invention.
本发明实施例提供的发声装置,其是在磁路***的至少局部表面上涂覆有热辐射材料层8。也就是说,可以选择性的在磁路***的合适部位上涂覆热辐射材料层8,当然也可以在整个磁路***的表面上涂覆热辐射材料层8,以最大限度的提高散热效果。本领域技术人员可以根据实际需要灵活选择在磁路***上涂覆热辐射材料8的具***置,对此不作限制。In the sound generating device provided by the embodiment of the present invention, at least a partial surface of the magnetic circuit system is coated with a layer of heat radiation material 8. That is to say, the heat radiation material layer 8 can be selectively coated on the appropriate part of the magnetic circuit system, of course, the heat radiation material layer 8 can also be coated on the surface of the entire magnetic circuit system to maximize the heat dissipation effect. . Those skilled in the art can flexibly choose the specific position for coating the heat radiation material 8 on the magnetic circuit system according to actual needs, and there is no limitation on this.
例如,将所述热辐射材料层8设置在所述磁轭5的至少一个表面上。磁轭5承载中心磁路部分和边磁路部分,其具有较大的表面积,有助于在其表面上大范围涂覆热辐射材料层8,音圈7在工作中产生的热量可以经磁轭5上热辐射材料层8快速、及时散发出去,用以降低音圈7的温度,这样能很好的避免出现音圈烧圈的不良现象。For example, the heat radiation material layer 8 is provided on at least one surface of the yoke 5. The yoke 5 carries the central magnetic circuit part and the side magnetic circuit part. It has a large surface area, which helps to coat the heat radiation material layer 8 on its surface in a large range. The heat generated by the voice coil 7 during operation can be transferred by the magnetic The heat radiation material layer 8 on the yoke 5 is quickly and timely dissipated to reduce the temperature of the voice coil 7, so as to avoid the bad phenomenon of voice coil burning.
在本发明的一个具体实施例方式中,如图2所示,在所述磁轭5朝向所述中心磁路部分的一面上涂覆热辐射材料层8。在本发明的另一个具体 实施例方式中,如图3所示,在所述磁轭5背向所述中心磁路部分的一面上涂覆热辐射材料层8。当然,除了上述的两种方式外,也可以在所述磁轭5朝向所述中心磁路部分的一面和背向所述中心磁路部分的一面上分别涂覆热辐射材料层8,以更好的提高散热性能。本领域技术人员可以根据实际需要灵活进行调整,对此不作限制。In a specific embodiment of the present invention, as shown in FIG. 2, a heat radiation material layer 8 is coated on the side of the yoke 5 facing the central magnetic circuit portion. In another specific embodiment of the present invention, as shown in Fig. 3, a heat radiation material layer 8 is coated on the side of the yoke 5 facing away from the central magnetic circuit portion. Of course, in addition to the above-mentioned two methods, the heat radiation material layer 8 can also be coated on the side of the yoke 5 facing the central magnetic circuit part and the side facing away from the central magnetic circuit part, respectively. Good to improve heat dissipation performance. Those skilled in the art can make adjustments flexibly according to actual needs, and there is no limitation on this.
此外,为了不增加磁轭5在厚度方向上的尺寸,还可以采用一种方式,即在所述磁轭5的至少一个表面上预先形成凹陷区域。此时,将热辐射材料以嵌设的方式形成在该凹陷区域内。这种设置热辐射材料层8的方式不占用磁轭5在厚度方向上空间,因此不会增加磁轭5的厚度。In addition, in order not to increase the size of the yoke 5 in the thickness direction, a method may also be adopted, that is, a recessed area is formed in advance on at least one surface of the yoke 5. At this time, the heat radiation material is embedded in the recessed area. This method of arranging the heat radiation material layer 8 does not occupy the space in the thickness direction of the yoke 5, and therefore does not increase the thickness of the yoke 5.
又例如,如图4和图5所示,所述热辐射材料层8设置在所述磁间隙6的表面上。振动***中的音圈7悬置在磁路***的磁间隙6中,在磁间隙6的表面上涂覆热辐射材料层8也可以很好的将音圈7产生的热量快速的辐射到外部,这样也能对音圈7起到良好的降温效果。此外,需要说明的是,如图4所示,在磁间隙6表面涂覆热辐射材料层8时,其热辐射材料层8的轨迹优选的是沿着整个磁间隙6一周,以实现均匀、快速的散热,避免出现局部温度不宜散出的情况。For another example, as shown in FIGS. 4 and 5, the heat radiation material layer 8 is disposed on the surface of the magnetic gap 6. The voice coil 7 in the vibration system is suspended in the magnetic gap 6 of the magnetic circuit system, and the heat radiation material layer 8 is coated on the surface of the magnetic gap 6 to quickly radiate the heat generated by the voice coil 7 to the outside. In this way, the voice coil 7 can also have a good cooling effect. In addition, it should be noted that, as shown in FIG. 4, when the heat radiation material layer 8 is coated on the surface of the magnetic gap 6, the trajectory of the heat radiation material layer 8 is preferably along the entire magnetic gap 6 to achieve uniformity, Quickly dissipate heat to avoid the situation that local temperature is not suitable for dissipating.
如图1和图6所示,又例如,所述中心磁路部分包括有中心磁铁3和固定在所述中心磁铁3顶部的第一华司1,所述热辐射材料层8被设置在所述中心磁铁3和所述第一华司1中的至少一个表面上。也就是说,当在磁路***的中心磁路部分上涂覆热辐射材料层8时,可以选择在中心磁铁3的表面上涂覆热辐射材料层8,也可以在第一华司1的的表面上涂覆热辐射材料层8,当然还可以在中心磁铁3和第一华司1的表面上分别涂覆热辐射材料层。音圈7工作中产的热量可以经中心磁路部分快速向外部散发,以达到降温的目的。As shown in Figures 1 and 6, for another example, the central magnetic circuit part includes a central magnet 3 and a first washer 1 fixed on top of the central magnet 3, and the heat radiation material layer 8 is arranged on the At least one of the central magnet 3 and the first washer 1 is on the surface. That is to say, when coating the heat radiation material layer 8 on the central magnetic circuit part of the magnetic circuit system, you can choose to coat the heat radiation material layer 8 on the surface of the central magnet 3, or you can coat the heat radiation material layer 8 on the surface of the first washer 1. The surface of is coated with a heat radiation material layer 8, of course, a heat radiation material layer can also be coated on the surfaces of the central magnet 3 and the first washer 1 respectively. The heat generated during the operation of the voice coil 7 can be quickly dissipated to the outside through the central magnetic circuit part to achieve the purpose of cooling down.
再例如,本发明实施例提供的发声装置,在磁轭5上除了设置有中心磁路部分之外,围绕着中心磁路部分还设置有边磁路部分。如图1所示,所述边磁路部分包括有边磁铁4和固定在所述边磁铁4顶部的第二华司2,所述热辐射材料层8被在所述边磁铁4和所述第二华司2中的至少一个表面上。也就是说,当在边磁路部分上涂覆热辐射材料层8时,可以选择在 边磁铁4的表面上涂覆热辐射材料层8,也可以在第二华司2的的表面上涂覆热辐射材料层8,还可以在边磁铁4和第二华司2的表面上分别涂覆热辐射材料层8。在这种情况下,音圈7工作产的热量可以经边磁路部分快速向外部外散发,以达到降温、避免烧圈的目的。For another example, in the sound generating device provided by the embodiment of the present invention, in addition to the central magnetic circuit part, the yoke 5 is also provided with side magnetic circuit parts around the central magnetic circuit part. As shown in Fig. 1, the side magnetic circuit part includes a side magnet 4 and a second washer 2 fixed on the top of the side magnet 4. The heat radiation material layer 8 is formed between the side magnet 4 and the side magnet 4 and the second washer 2 At least one of the second washers 2 is on the surface. That is to say, when coating the heat radiation material layer 8 on the side magnetic circuit part, you can choose to coat the heat radiation material layer 8 on the surface of the side magnet 4, or coat the surface of the second washer 2 The heat radiating material layer 8 can also be coated with a heat radiating material layer 8 on the surface of the side magnet 4 and the second washer 2 respectively. In this case, the heat produced by the voice coil 7 can be quickly dissipated to the outside through the side magnetic circuit part, so as to achieve the purpose of cooling down and avoiding coil burning.
需要说明的是,对于在中心磁路部分和边磁路部分上涂覆辐射材料层8时,可以选择仅在中心磁路部分上涂覆,也可以选择仅在边磁路部分上涂覆,当然还可以选择在中心磁路部分和边磁路部分上分别涂覆。通常来说,涂覆的面积越大,散热效果就越好。本领域技术人员可以根据具体情况灵活调整涂覆的位置,对此不作限制。It should be noted that when coating the radiation material layer 8 on the central magnetic circuit part and the side magnetic circuit parts, you can choose to coat only the central magnetic circuit part, or you can choose to coat only the side magnetic circuit part. Of course, you can also choose to coat the central magnetic circuit part and the side magnetic circuit part separately. Generally speaking, the larger the coated area, the better the heat dissipation effect. Those skilled in the art can flexibly adjust the coating position according to the specific situation, and there is no restriction on this.
本发明实施例中,磁路***上可以涂覆热辐射材料层8的位置包括磁间隙6,中心磁路部分,边磁路部分和磁轭5。可以单独选择其中的一个或多个部位涂覆热辐射材料层8。本领域技术人员可以根据需要灵活进行调整,对此不作限制。In the embodiment of the present invention, the position where the heat radiation material layer 8 can be coated on the magnetic circuit system includes the magnetic gap 6, the central magnetic circuit part, the side magnetic circuit part and the yoke 5. One or more of them can be individually selected to be coated with the heat radiation material layer 8. Those skilled in the art can make adjustments flexibly according to needs, and there is no restriction on this.
本发明实施例提供的发声装置,其中的热辐射材料层8所采用的材料是具有较高热辐射系数的材料。例如,可以采用热辐射系数≥0.7的材料。In the sound emitting device provided by the embodiment of the present invention, the material used for the heat radiation material layer 8 is a material with a relatively high heat radiation coefficient. For example, a material with a thermal radiation coefficient ≥ 0.7 can be used.
可选的是,所述热辐射材料层8的材质为纳米碳颗粒。纳米碳能够提升热辐射效率的原因为:(1)纳米碳从色泽上看呈黑色,黑色有利于吸收/发射红外光热辐射,而发声装置的工作温度约为100℃左右,属于红外光热辐射。(2)纳米碳本身的热辐射系数比较高,例如热辐射系数可达到0.98,而现有的磁路***表面的电镀层镍/锌的热辐射系数仅仅只有0.05。(3)纳米碳颗粒的粒径比较小,这有助于增大散热表面积,最终实现良好的散热效果。Optionally, the material of the heat radiation material layer 8 is nano carbon particles. The reasons why nano-carbon can improve the heat radiation efficiency are: (1) The color of nano-carbon is black. Black is good for absorbing/emitting infrared light and heat radiation. The operating temperature of the sound device is about 100°C, which belongs to infrared light and heat. radiation. (2) The thermal radiation coefficient of nano-carbon itself is relatively high, for example, the thermal radiation coefficient can reach 0.98, while the thermal radiation coefficient of the electroplated nickel/zinc on the surface of the existing magnetic circuit system is only 0.05. (3) The particle size of the nano-carbon particles is relatively small, which helps to increase the heat dissipation surface area and finally achieve a good heat dissipation effect.
此外,本发明提供的实施例中,所述热辐射材料层8并不限于采用上述的纳米碳颗粒,其还可以采用其它热辐射系数比较高,例如热辐射系数≥0.7的材料。具体地,所述热辐射材料层8的材质例如还可以为石墨烯颗粒、碳管、氮化硼颗粒、碳化硅颗粒和氮化铝颗粒中的任意一种。本领域技术人员可以根据散热需要灵活选择,对此不作限制。In addition, in the embodiment provided by the present invention, the heat radiation material layer 8 is not limited to the use of the aforementioned nano-carbon particles, and other materials with a relatively high heat radiation coefficient, for example, heat radiation coefficient ≥ 0.7 can also be used. Specifically, the material of the heat radiation material layer 8 may also be any one of graphene particles, carbon tubes, boron nitride particles, silicon carbide particles, and aluminum nitride particles, for example. Those skilled in the art can flexibly choose according to the heat dissipation requirements, and there is no restriction on this.
本发明实施例提供的发声装置中,通过在磁路***上合理的涂覆热辐射材料层8,能明显提升磁路***的散热效率和效果,能及时将音圈7产生 的热量散发出去,进而降低整个发声装置在工作状态下的温度,避免发声装置出现温度过高的情况。In the sound generating device provided by the embodiment of the present invention, by reasonably coating the thermal radiation material layer 8 on the magnetic circuit system, the heat dissipation efficiency and effect of the magnetic circuit system can be significantly improved, and the heat generated by the voice coil 7 can be dissipated in time. In turn, the temperature of the entire sounding device in the working state is reduced, and the temperature of the sounding device is prevented from being too high.
本发明实施例提供的发声装置中,对于所述热辐射材料层8的厚度应当合理的进行控制,以避免所形成的热辐射材料层8的厚度过厚,导致整个磁路***不利于装配。In the sound generating device provided by the embodiment of the present invention, the thickness of the heat radiation material layer 8 should be reasonably controlled to avoid the thickness of the heat radiation material layer 8 formed being too thick, which would cause the entire magnetic circuit system to be unfavorable for assembly.
可选的是,所述热辐射材料层8的厚度范围可以控制为3μm-20μm。本领域技术人员可以根据磁路***中不同位置对厚度的敏感程度,来决定热辐射材料层8的实际厚度。以磁间隙6为例,通常来说,磁间隙6宽度最小尺寸为0.4mm左右,所以热辐射材料层8基本不会对空间产生影响。此外,根据实验结果可知,在所述磁路***的至少局部表面上涂覆热辐射材料层8,例如在第一华司1的表面上涂覆3μm-20μm的一层纳米碳材料层,可使发声装置温升降低约3℃。Optionally, the thickness range of the heat radiation material layer 8 can be controlled to be 3 μm-20 μm. Those skilled in the art can determine the actual thickness of the heat radiation material layer 8 according to the sensitivity of different positions in the magnetic circuit system to the thickness. Taking the magnetic gap 6 as an example, generally speaking, the minimum dimension of the width of the magnetic gap 6 is about 0.4 mm, so the heat radiation material layer 8 basically does not affect the space. In addition, according to the experimental results, coating the heat radiation material layer 8 on at least part of the surface of the magnetic circuit system, for example, coating the surface of the first washer 1 with a layer of nano-carbon material with a thickness of 3 μm-20 μm. Reduce the temperature rise of the sound device by about 3°C.
而较为优选的是,所述热辐射材料层8的厚度为5μm。More preferably, the thickness of the heat radiation material layer 8 is 5 μm.
需要说明的是,在具体应用中,本领域技术人员可以根据需要灵活调整热辐射材料层8的厚度,对此不作限制。It should be noted that, in specific applications, those skilled in the art can flexibly adjust the thickness of the heat radiation material layer 8 as required, and there is no limitation on this.
如图7所示,其中示出了两组对比曲线。曲线a为常规的发声装置中磁路***的温升曲线。曲线b为本发明实施例提供的发声装置中磁路***的温升曲线。经对比可知,曲线b明显低于曲线a。也就是说,设置了热辐射材料层8的磁路***温度较低,其具有良好的散热效果。As shown in Figure 7, two sets of comparison curves are shown. Curve a is the temperature rise curve of the magnetic circuit system in the conventional sounding device. Curve b is the temperature rise curve of the magnetic circuit system in the sound generating device provided by the embodiment of the present invention. The comparison shows that curve b is significantly lower than curve a. In other words, the temperature of the magnetic circuit system provided with the heat radiation material layer 8 is relatively low, and it has a good heat dissipation effect.
本发明实施例提供的发声装置,其中的音圈作为热源,其产生的热量能够经磁路***快速、及时的排出,避免出现音圈过热而被烧圈的现象,可以提高音圈的使用寿命,进而有助于提高整个发声装置的使用寿命。In the sound generating device provided by the embodiment of the present invention, the voice coil is used as a heat source, and the heat generated by the voice coil can be quickly and timely discharged through the magnetic circuit system to avoid the phenomenon of the voice coil being overheated and burned, and the service life of the voice coil can be improved , Which in turn helps to increase the service life of the entire sounding device.
根据本发明的第二方面,还提供了一种电子设备。所述电子设备包括如上任意一项所述的发声装置。According to the second aspect of the present invention, an electronic device is also provided. The electronic equipment includes the sound emitting device as described in any one of the above.
所述电子设备例如可以是手机、笔记本电脑、平板电脑、导航仪、VR设备、AR设备、智能手表等,本发明对此不作限制。The electronic device may be, for example, a mobile phone, a notebook computer, a tablet computer, a navigator, a VR device, an AR device, a smart watch, etc., which is not limited in the present invention.
虽然已经通过例子对本发明的一些特定实施例进行了详细说明,但是本领域的技术人员应该理解,以上例子仅是为了进行说明,而不是为了限制本发明的范围。本领域的技术人员应该理解,可在不脱离本发明的范围 和精神的情况下,对以上实施例进行修改。本发明的范围由所附权利要求来限定。Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the invention is defined by the appended claims.
Claims (10)
- 一种发声装置,其特征在于:包括磁路***和振动***;A sounding device, which is characterized in that it comprises a magnetic circuit system and a vibration system;所述磁路***包括磁轭,以及设置在所述磁轭上的中心磁路部分和边磁路部分,所述中心磁路部分和所述边磁路部分之间形成磁间隙;所述振动***包括音圈,所述音圈插设于所述磁间隙中;The magnetic circuit system includes a magnetic yoke, and a central magnetic circuit part and a side magnetic circuit part arranged on the magnetic yoke, and a magnetic gap is formed between the central magnetic circuit part and the side magnetic circuit part; the vibration The system includes a voice coil, and the voice coil is inserted in the magnetic gap;其中,在所述磁路***的至少局部表面上涂覆有热辐射材料层。Wherein, at least a partial surface of the magnetic circuit system is coated with a layer of heat radiation material.
- 根据权利要求1所述的发声装置,其特征在于:所述热辐射材料层设置在所述磁轭的至少一个表面上。The sound emitting device according to claim 1, wherein the heat radiation material layer is provided on at least one surface of the yoke.
- 根据权利要求1所述的发声装置,其特征在于:所述热辐射材料层设置在所述磁间隙的表面上。The sound emitting device according to claim 1, wherein the heat radiation material layer is provided on the surface of the magnetic gap.
- 根据权利要求1所述的发声装置,其特征在于:所述中心磁路部分包括中心磁铁和固定在所述中心磁铁顶部的第一华司,所述热辐射材料层设置在所述中心磁铁和所述第一华司中的至少一个表面上。The sounding device according to claim 1, wherein the central magnetic circuit part includes a central magnet and a first washer fixed on the top of the central magnet, and the heat radiation material layer is provided on the central magnet and At least one of the first washers is on the surface.
- 根据权利要求1所述的发声装置,其特征在于:所述边磁路部分包括边磁铁和固定在所述边磁铁顶部的第二华司,所述热辐射材料层设置在所述边磁铁和所述第二华司中的至少一个表面上。The sounding device according to claim 1, wherein the side magnetic circuit part includes a side magnet and a second washer fixed on the top of the side magnet, and the heat radiation material layer is provided on the side magnet and At least one of the second washer is on the surface.
- 根据权利要求1所述的发声装置,其特征在于:所述热辐射材料层的材质为热辐射系数≥0.7的材料。The sound emitting device according to claim 1, wherein the material of the heat radiation material layer is a material with a heat radiation coefficient ≥ 0.7.
- 根据权利要求1所述的发声装置,其特征在于:所述热辐射材料层的材质为纳米碳颗粒、石墨烯颗粒、碳管、氮化硼颗粒、碳化硅颗粒和氮化铝颗粒中的任意一种。The sound emitting device according to claim 1, wherein the material of the heat radiation material layer is any of carbon nano particles, graphene particles, carbon tubes, boron nitride particles, silicon carbide particles, and aluminum nitride particles. A sort of.
- 根据权利要求1所述的发声装置,其特征在于:所述热辐射材料层的厚度为3μm-20μm。The sound emitting device according to claim 1, wherein the thickness of the heat radiation material layer is 3 μm-20 μm.
- 根据权利要求1所述的发声装置,其特征在于:所述热辐射材料层的厚度为5μm。The sound emitting device according to claim 1, wherein the thickness of the heat radiation material layer is 5 μm.
- 一种电子设备,其特征在于:包括如权利要求1-9中任意一项所述的发声装置。An electronic device, characterized in that it comprises the sound emitting device according to any one of claims 1-9.
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CN111405429A (en) * | 2020-03-13 | 2020-07-10 | 歌尔股份有限公司 | Sound production device and electronic equipment |
CN211557474U (en) * | 2020-03-13 | 2020-09-22 | 歌尔股份有限公司 | Sound production device and electronic equipment |
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CN205081966U (en) * | 2015-10-27 | 2016-03-09 | 歌尔声学股份有限公司 | Loudspeaker module |
CN106170115B (en) * | 2016-08-18 | 2022-06-14 | 歌尔股份有限公司 | Voice coil structure and vibration system in loudspeaker |
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CN109246553B (en) * | 2018-11-09 | 2021-03-30 | 歌尔股份有限公司 | Be applied to reinforcement portion and vibrating diaphragm of speaker vibrating diaphragm |
CN109587606B (en) * | 2018-11-14 | 2021-01-15 | 歌尔股份有限公司 | Sound production device and electronic equipment |
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2020
- 2020-03-13 CN CN202010177164.7A patent/CN111294713A/en active Pending
- 2020-11-18 WO PCT/CN2020/129587 patent/WO2021179665A1/en active Application Filing
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CN106162466A (en) * | 2016-08-30 | 2016-11-23 | 歌尔股份有限公司 | A kind of speaker |
CN109794389A (en) * | 2019-02-01 | 2019-05-24 | 珠海市光环自动化科技有限公司 | A kind of graphene spray equipment and its spraying process |
CN111294713A (en) * | 2020-03-13 | 2020-06-16 | 歌尔股份有限公司 | Sound production device and electronic equipment |
CN111405429A (en) * | 2020-03-13 | 2020-07-10 | 歌尔股份有限公司 | Sound production device and electronic equipment |
CN211557474U (en) * | 2020-03-13 | 2020-09-22 | 歌尔股份有限公司 | Sound production device and electronic equipment |
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