WO2020107620A1 - 按键发声装置以及电子设备 - Google Patents

按键发声装置以及电子设备 Download PDF

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Publication number
WO2020107620A1
WO2020107620A1 PCT/CN2018/124941 CN2018124941W WO2020107620A1 WO 2020107620 A1 WO2020107620 A1 WO 2020107620A1 CN 2018124941 W CN2018124941 W CN 2018124941W WO 2020107620 A1 WO2020107620 A1 WO 2020107620A1
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WO
WIPO (PCT)
Prior art keywords
exciter
electronic device
key
key sounding
elastic member
Prior art date
Application number
PCT/CN2018/124941
Other languages
English (en)
French (fr)
Inventor
杨鑫峰
祖峰磊
Original Assignee
歌尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Priority to US17/054,591 priority Critical patent/US11202141B2/en
Publication of WO2020107620A1 publication Critical patent/WO2020107620A1/zh

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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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for telephonic receivers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
    • H04R2205/022—Plurality of transducers corresponding to a plurality of sound channels in each earpiece of headphones or in a single enclosure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/002—Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution

Definitions

  • the invention relates to the technical field of electroacoustic conversion, and more particularly, to a key sounding device and electronic equipment.
  • a side sound speaker module In order to achieve a good sound effect, a side sound speaker module is usually used.
  • the side sound speaker module usually has a front sound cavity and a sound hole.
  • the front acoustic cavity and the sound hole form an acoustic resonator.
  • the resonance frequency of the acoustic resonator is below 10 kHz, for example, the resonance frequency is 3-4 kHz. After this resonant frequency, the frequency response of the sound pressure of the speaker module will drop rapidly, resulting in a low high-frequency response of electronic products, which cannot meet consumer demand for high-fidelity music playback.
  • An object of the present invention is to provide a new technology solution for a key sounding device.
  • a key sounding device includes a cap, an exciter, and an elastic member, the elastic member is disposed at an edge of the cap, the exciter is disposed at the middle of the cap, the elastic member and the shell of the electronic device Connected to the body, the exciter is suspended in the housing, the elastic member is configured to provide an elastic restoring force, and the exciter is configured to provide a driving force.
  • the cap portion has a sheet structure.
  • the exciter includes a piezoelectric exciter, a moving coil exciter, a moving iron exciter, a moving magnetic exciter, or a magnetostrictive exciter.
  • the elastic member is double-sided tape.
  • an electronic device includes a housing and the above-mentioned key sounding device.
  • a mounting hole is formed in the housing, the elastic member is connected to the housing, and the exciter is suspended in the mounting hole.
  • a recessed annular step structure is provided at a portion of the housing surrounding the mounting hole, and the elastic member is embedded in the annular step structure.
  • the key sounding device is provided on the side wall of the housing.
  • the plurality of key sounding devices form a stereo effect.
  • it further includes a gravity sensor and a sound channel control module connected to the gravity sensor, the gravity sensor is configured to sense position information of the electronic device, and the sound channel control module is configured to use In order to obtain the orientation information and switch a plurality of channel modes of the key sounding device according to the orientation information.
  • the plurality of key sounding devices include a first key sounding device and a second key sounding device, the operating frequency of the first key sounding device is above 2KHz, and the working frequency of the second key sounding device is 1KHz the following.
  • a plurality of the key sounding devices are arranged symmetrically on the housing in pairs.
  • the exciter vibrates and drives the cap to vibrate to directly radiate sound outward.
  • the sounding direction is perpendicular to the main plane of the cap, such as front or back.
  • the key sounding device is installed on the surface of the electronic device. The key sounding device radiates sound directly outward, without the need to set front sound cavity and sound hole, etc., so it will not form an acoustic resonator. This makes the sound effect of the key sound device, especially the high-frequency sound effect good.
  • FIG. 1 is a schematic structural diagram of a mobile phone according to an embodiment of the present disclosure.
  • FIG. 2 is a front view of a mobile phone according to an embodiment of the present disclosure.
  • FIG 3 is a cross-sectional view of a mobile phone according to an embodiment of the present disclosure.
  • FIG. 4 is a partially enlarged view at I in FIG. 3.
  • 11 mobile phone; 12: side part; 13: cap part; 14: exciter; 15: elastic member; 16: FPCB; 17: gap; 18: first key sound device; 19: second key sound device; 20: Sound channel control module; 21; long side wall; 22: short side wall; 23: annular step structure.
  • a key sounding device is provided. As shown in FIG. 4, the device includes a cap 13, an actuator 14 and an elastic member 15.
  • the elastic member 15 is provided at the edge of the cap 13.
  • the exciter 14 is provided in the middle of the cap 13.
  • the elastic member 15 is connected to the housing of the electronic device.
  • the exciter 14 is suspended in the housing.
  • the elastic member 15 is configured to provide an elastic restoring force to restore the cap 13 to the initial position.
  • the exciter 14 is configured to provide a driving force to cause the cap 13 to deviate from the initial position and vibrate.
  • the cap portion 13 has a sheet-like structure, and may be a circular sheet-like shape, a rectangular sheet-like shape, or a racetrack-like sheet-like shape.
  • the sound effect of the lamella structure is good.
  • the elastic member 15 is provided on the side edge of the cap 13 or the front and back edges of the cap 13.
  • the front surface refers to the surface of the cap 13 for pressing, and the rear surface refers to the surface opposite to the front surface.
  • the cap 13 uses an inorganic non-metal, metal, or polymer material.
  • the Young's modulus of the cap 13 is 2000 MPa or more, and the density is 2.7 g/cm 3 or less.
  • the cap portion 13 within this range has the characteristics of high structural strength and light weight, can effectively reduce the split vibration of the key sounding device, and requires less driving force during vibration.
  • the exciter 14 includes a piezoelectric exciter, a moving coil exciter, a moving iron exciter, a moving magnetic exciter, or a magnetostrictive exciter.
  • the actuator 14 is fixed to the middle of the cap 13 by glue.
  • the exciter 14 receives an electric signal of an external circuit, so that vibration occurs.
  • the exciter 14 causes the cap 13 to vibrate, thereby radiating sound outward.
  • the elastic member 15 has elasticity, so that the cap portion 13 is returned to the initial position.
  • the material of the elastic member 15 is a polymer material.
  • Polymer materials include PI, PP, PEN, PPT or elastomers. All of the above materials can provide elastic restoring force.
  • the elastic member 15 is double-sided tape. Double-sided tape has good compression and resilience performance, and is easy to bond. Relative to the use of glue bonding, double-sided tape will not have the problem of glue overflow.
  • the thickness of the double-sided tape is 0.05 mm or more.
  • the elastic member 15 has a ring structure, such as a rectangular ring, a circular ring, a racetrack ring, or the like.
  • the elastic member 15 is adhered to the edge of the back of the cap 13 by glue. During assembly, the side of the elastic member 15 away from the cap 13 is fixed to the housing of the electronic device.
  • the elastic member 15 has a block structure.
  • a plurality of elastic members 15 are distributed along the edge of the back of the cap 13 and are connected to the cap 13 by glue. This arrangement can also provide an elastic restoring force for the vibration of the cap 13.
  • the cap 13 maintains a consistent design with the outer surface of the electronic device.
  • the cap 13 is flush with the outer surface of the housing of the electronic device.
  • the gap formed between the cap 13 and the casing of the electronic device is 0.2 mm or less to ensure the integrity of the electronic device.
  • the exciter 14 vibrates and drives the cap 13 to vibrate to directly radiate sound outward.
  • the sounding direction is perpendicular to the main plane of the cap 13, for example, front or back.
  • the key sounding device is installed on the surface of the electronic device. The key sounding device radiates sound directly outward, without the need to set front sound cavity and sound hole, etc., so no acoustic resonator will be formed. This makes the key sounding device sounding effect, especially high frequency (e.g., frequency above 2KHz) sounding effect is good.
  • the sound emission direction of the key sounding device is the same as the installation direction, and can be provided on the side portion 12 of the electronic device, such as the long side wall 21 or the short side wall 22.
  • cap portion 13 of the key sounding device also has the function of the key itself. For example, volume adjustment, item switching, etc.
  • an electronic device includes mobile phones 11, tablet computers, notebook computers, game consoles, interphones, and televisions.
  • the electronic device includes a housing and the above-mentioned key sounding device.
  • a mounting hole is formed in the housing.
  • the elastic member 15 is connected to the housing.
  • the exciter 14 is suspended in the mounting hole.
  • the following uses the mobile phone 11 as an example.
  • Mounting holes are provided on the side wall of the middle frame of the mobile phone 11.
  • the key sounding device is provided on the side wall of the housing. This position does not occupy the space on the front and back of the mobile phone 11, which facilitates the overall screen design and the overall design of the appearance.
  • the exciter 14 is suspended in the mounting hole. A gap 17 is formed between the exciter 14 and the hole wall to prevent the hole wall from interfering with the exciter 14.
  • a recessed annular step structure 23 is provided at a portion of the housing surrounding the mounting hole.
  • the elastic member 15 is embedded in the annular step structure 23.
  • the elastic member 15 has an annular structure, and the elastic member 15 is bonded to the step surface of the annular step structure 23 by glue. This arrangement can effectively prevent the cap portion 13 from protruding excessively from the outer surface of the electronic device, such as the mobile phone 11, so that the electronic device has a good appearance.
  • annular step structure 23 can also play a role of positioning, so that the installation of the elastic member 15 is more accurate.
  • the exciter 14 is electrically connected to the electronic device through the FPCB 16.
  • the exciter 14 is connected to the control device 20 of the electronic equipment through the FPCB 16.
  • the exciter 14 vibrates in response to the electric signal of the control device 20.
  • FPCB16 has better durability.
  • FIGS. 1-2 there are a plurality of key sounding devices, and a plurality of key sounding devices form a stereo effect.
  • a plurality of key sounding devices form a stereo effect.
  • a plurality of key sounding devices are arranged symmetrically on the housing in pairs.
  • the mobile phone 11 has a rectangular structure.
  • the middle frame of the mobile phone 11 includes two long side walls 21 and two short side walls 22.
  • the four key sound emitting devices are arranged symmetrically on the two long side walls 21 of the rectangular mobile phone 11 two by two, so as to form a stereo effect.
  • a key sounding device is provided on both the long side walls 21 and the two short side walls 22. This setting method can also achieve a stereo effect.
  • the electronic device further includes a gravity sensor and a sound channel control module 20 connected to the gravity sensor.
  • the gravity sensor is configured to sense position information of the electronic device.
  • the sound channel control module 20 is configured to acquire orientation information and switch channel modes of a plurality of key sounding devices according to the orientation information.
  • the four key sounding devices of the mobile phone 11 are arranged symmetrically on the two long side walls 21 two by two.
  • the gravity sensor sends the orientation signal used by the vertical screen to the sound channel control module 20.
  • the sound channel control module 20 switches the two key sound devices on the left side of the user to the left channel mode in the portrait state, and switches the two key sound devices on the right side of the user to the right channel mode, thereby providing More excellent sound experience.
  • the gravity sensor sends the orientation signal used by the horizontal screen to the sound channel control module 20.
  • the sound channel control module 20 switches the two button sounding devices located on the left side of the user to the left channel mode in the landscape state, and switches the two button sounding devices located on the right side of the user to the right channel mode, thereby providing More excellent sound experience.
  • the key sounding device can adjust the volume, which can be used to manually adjust the volume by pressing the cap 13; or the key sounding device can be used to switch items.
  • the plurality of key sounding devices include a first key sounding device 18 and a second key sounding device 19.
  • the operating frequency of the first key sounding device 18 is above 2KHz, and the operating frequency of the second key sounding device 19 is below 1KHz.
  • Multiple key sounding devices with different working frequencies can provide a wider sounding frequency range, which makes the sound effect of electronic equipment more excellent.
  • only one key sounding device may be provided.
  • it is provided on any one of the long side wall 21 or the short side wall 22.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Multimedia (AREA)
  • Telephone Set Structure (AREA)

Abstract

本发明公开了一种按键发声装置以及电子设备。该按键发声装置包括帽部、激励器和弹性部件，所述弹性部件被设置在所述帽部的边缘，所述激励器被设置在所述帽部的中部，所述弹性部件与电子设备的壳体连接，所述激励器悬置在所述壳体内，所述弹性部件被配置为用于提供弹性回复力，所述激励器被配置为用于提供驱动力。该按键发声装置的结构简单，不需要设置前声腔和出声孔，发声效果良好。

Description

按键发声装置以及电子设备 技术领域
本发明涉及电声转换技术领域，更具体地，涉及一种按键发声装置以及电子设备。
背景技术
随着用户对手机、平板等电子产品外观要求的进一步提升，全面屏以及正面无孔化设计已经成为一种发展趋势。
为了实现良好的发声效果，通常采用侧出声扬声器模组。侧出声扬声器模组通常具有前声腔和出声孔。前声腔和出声孔形成了一个声学共鸣器。在一些示例中，该声学共鸣器的谐振频率在10kHz以下，例如，谐振频率为3-4kHz。在此谐振频率之后，扬声器模组的声压频率响应会快速下降，从而导致电子产品的高频响应较低，无法满足消费者对高保真音乐回放的需求。
因此，需要提供一种新的技术方案，以解决上述技术问题。
发明内容
本发明的一个目的是提供一种按键发声装置的新技术方案。
根据本发明的第一方面，提供了一种按键发声装置。按键发声装置包括帽部、激励器和弹性部件，所述弹性部件被设置在所述帽部的边缘，所述激励器被设置在所述帽部的中部，所述弹性部件与电子设备的壳体连接，所述激励器悬置在所述壳体内，所述弹性部件被配置为用于提供弹性回复力，所述激励器被配置为用于提供驱动力。
可选地，所述帽部呈片状结构。
可选地，所述激励器包括压电式激励器、动圈式激励器、动铁式激励器、动磁式激励器或磁致伸缩式激励器。
可选地，所述弹性部件为双面胶。
根据本公开的另一个实施例，提供了一种电子设备。该设备包括壳体和上述按键发声装置，在所述壳体上形成有安装孔，所述弹性部件与所述壳体连接，所述激励器悬置在所述安装孔中。
可选地，在所述壳体的围绕所述安装孔的部位设置有下凹的环形台阶结构，所述弹性部件嵌入所述环形台阶结构中。
可选地，所述按键发声装置被设置在所述壳体的侧壁上。
可选地，所述按键发声装置设置有多个，多个所述按键发声装置形成立体声效果。
可选地，还包括重力传感器和与所述重力传感器连接的声音通道控制模块，所述重力传感器被配置为用于感测所述电子设备的方位信息，所述声音通道控制模块被配置为用于获取所述方位信息并根据所述方位信息切换多个所述按键发声装置的声道模式。
可选地，多个所述按键发声装置包括第一按键发声装置和第二按键发声装置,所述第一按键发声装置的工作频率为2KHz以上,所述第二按键发声装置的工作频率为1KHz以下。
可选地，多个所述按键发声装置两两对称地设置在所述壳体上。
根据本公开的一个实施例，激励器振动并带动帽部振动，以直接向外辐射声音。发声方向垂直于帽部的主平面，例如正面或者背面。该按键发声装置被安装在电子设备的表面。该按键发声装置直接向外辐射声音，不需要设置前声腔和出声孔等，因此不会形成声学共鸣器。这使得该按键发声装置的发声效果，尤其是高频发声效果良好。
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。
附图说明
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。
图1是根据本公开的一个实施例的手机的结构示意图。
图2是根据本公开的一个实施例的手机的主视图。
图3是根据本公开的一个实施例的手机的剖视图。
图4是图3中I处的局部放大图。
附图标记说明：
11：手机；12：侧部；13：帽部；14：激励器；15：弹性部件；16：FPCB；17：间隙；18：第一按键发声装置；19：第二按键发声装置；20：声音通道控制模块；21；长侧壁；22：短侧壁；23：环形台阶结构。
具体实施方式
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。
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。
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。
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。
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。
根据本公开的一个实施例，提供了一种按键发声装置。如图4所述，该装置包括帽部13、激励器14和弹性部件15。弹性部件15被设置在帽部13的边缘。激励器14被设置在帽部13的中部。弹性部件15与电子设备的壳体连接。激励器14悬置在壳体内。弹性部件15被配置为用于提供弹性回复力，以使帽部13回复至初始位置。激励器14被配置为用于提供驱动力，以使帽部13偏离初始位置，进行振动。
例如，帽部13呈片状结构，可以是圆形片状、矩形片状或者跑道形 片状等。片状结构的发声效果良好。弹性部件15设置在帽部13的侧边缘或者帽部13的正面、背面的边缘。正面是指帽部13的用于按压的表面，背面是指与正面相对的表面。
例如，帽部13采用无机非金属、金属或者高分子材料。优选地，帽部13的杨氏模量在2000MPa以上，密度在2.7g/cm 3以下。该范围内的帽部13具有结构强度高、质量轻的特点，能够有效地降低按键发声装置的分割振动，并且振动时需要的驱动力小。
例如，激励器14包括压电式激励器、动圈式激励器、动铁式激励器、动磁式激励器或磁致伸缩式激励器。通过胶将激励器14固定在帽部13的中部位置。激励器14接收外部电路的电信号，从而发生振动。激励器14带动帽部13振动，从而向外辐射声音。
弹性部件15具有弹性，从而使帽部13回复至初始位置。例如，弹性部件15的材质为高分子材料。高分子材料包括PI、PP、PEN、PPT或高弹体等材料。上述材料均能提供弹性回复力。优选地,弹性部件15为双面胶。双面胶具有良好的压缩、回弹性能，并且便于粘结。相对于采用胶水粘结，双面胶不会出现溢胶的问题。例如，双面胶的厚度为0.05mm以上。
在一个例子中，弹性部件15为环状结构，例如矩形环状、圆形环状、跑道形环状等。弹性部件15通过胶粘结在帽部13的背面的边缘。在装配时，将弹性部件15的远离帽部13的一侧固定在电子设备的壳体上。
在一个例子中，弹性部件15为块状结构。多个弹性部件15沿帽部13的背面的边缘分布，并通过胶与帽部13连接。这种设置方式同样能够为帽部13的振动提供弹性回复力。
帽部13与所在的电子设备的外表面保持一致的外观设计。例如，帽部13与电子设备的壳体的外表面相平齐。在帽部13与电子设备的壳体之间形成的间隙在0.2mm以下，以保证电子设备的整体性良好。
在本公开实施例中，激励器14振动并带动帽部13振动，以直接向外辐射声音。发声方向垂直于帽部13的主平面，例如正面或者背面。该按键发声装置被安装在电子设备的表面。该按键发声装置直接向外辐射声音，不需要设置前声腔和出声孔等，因此不会形成声学共鸣器。这使得该按键 发声装置的发声效果，尤其是高频(例如，频率为2KHz以上)发声效果良好。
此外，该按键发声装置的发声方向与安装方向相同，能够被设置在电子设备的侧部12，例如长侧壁21或者短侧壁22。
此外，该按键发声装置的帽部13同时具有按键自身的功能。例如，音量调节、项目切换等。
根据本公开的另一个实施例，提供了一种电子设备。例如，电子设备包括手机11、平板电脑、笔记本电脑、游戏机、对讲机、电视机等。
如图1-3所示，该电子设备包括壳体和上述按键发声装置。在壳体上形成有安装孔。弹性部件15与壳体连接。激励器14悬置在安装孔中。下面以手机11为例进行说明。
在手机11的中框的侧壁上设置有安装孔。按键发声装置被设置在壳体的侧壁上。该位置不占用手机11的正面和背面的空间，便于全面屏设计以及外观的整体化设计。激励器14悬置在安装孔中。激励器14与孔壁之间形成间隙17，以避免孔壁对激励器14造成干涉。
在一个例子中，如图4所示，在壳体的围绕安装孔的部位设置有下凹的环形台阶结构23。弹性部件15嵌入环形台阶结构23中。例如，弹性部件15为环状结构，通过胶将弹性部件15粘结在环形台阶结构23的台阶面上。这种设置方式能够有效地避免帽部13过度凸出于电子设备，例如手机11的外表面，使得电子设备的外观良好。
此外，环形台阶结构23还能起到定位的作用，使得弹性部件15的安装更精确。
在一个例子中，如图4所示，激励器14通过FPCB16与电子设备电连接。例如，激励器14通过FPCB16与电子设备的控制装置20连接。激励器14响应控制装置20的电信号而发生振动。相比于采用信号线连接，FPCB16的耐用性更好。
在一个例子中，如图1-2所示，按键发声装置设置有多个，多个按键发声装置形成立体声效果。例如，按键发声装置设置有4个。至少两个按键发声装置朝向不同的方向辐射声音，从而实现立体声效果。这种设置方 式能够提高电子设备的声音体验。
在一个例子中，多个按键发声装置两两对称地设置在壳体上。例如，如图2所示，手机11呈矩形结构。该手机11的中框包括两条长侧壁21和两条短侧壁22。四个按键发声装置两两对称地设置在矩形的手机11的两条长侧壁21上，从而形成立体声效果。
在其他示例中，在两条长侧壁21和两条短侧壁22上均设置有一个按键发声装置。这种设置方式同样能够实现立体声效果。
当然，多个按键发声装置的设置方式不限于上述实施例。本领域技术人员可以根据实际需要进行设置。
在一个例子中，电子设备还包括重力传感器和与重力传感器连接的声音通道控制模块20。重力传感器被配置为用于感测电子设备的方位信息。声音通道控制模块20被配置为用于获取方位信息并根据方位信息切换多个按键发声装置的声道模式。
例如，手机11的四个按键发声装置两两对称地设置在两条长侧壁21上。在手机11竖屏(即长侧壁21平行于纵向)使用时，重力传感器将竖屏使用的方位信号进行发送到声音通道控制模块20。声音通道控制模块20将在竖屏状态下位于使用者左侧的两个按键发声装置切换成左声道模式，将位于使用者右侧的两个按键发声装置切换成右声道模式，从而提供更加优良的声音体验。
当电子设备横屏(即长侧壁21平行于横向)使用时，重力传感器将横屏使用的方位信号进行发送到声音通道控制模块20。声音通道控制模块20将在横屏状态下位于使用者左侧的两个按键发声装置切换成左声道模式，将位于使用者右侧的两个按键发声装置切换成右声道模式，从而提供更加优良的声音体验。
在一个例子中，按键发声装置能够调节音量大小，用于通过按动帽部13能够对音量进行手动调节；或者按键发声装置用于切换项目等。
在一个例子中，多个按键发声装置包括第一按键发声装置18和第二按键发声装置19。第一按键发声装置18的工作频率为2KHz以上,第二按键发声装置19的工作频率为1KHz以下。多个不同工作频率的按键发声装 置，能够提供更宽的发声频率范围，这使得电子设备的发声效果更加优良。
在其他示例中，按键发声装置也可以仅设置一个。例如，设置在任意一条长侧壁21或者短侧壁22上。
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。

Claims (11)

  1. 一种按键发声装置，其中，包括帽部、激励器和弹性部件，所述弹性部件被设置在所述帽部的边缘，所述激励器被设置在所述帽部的中部，所述弹性部件与电子设备的壳体连接，所述激励器悬置在所述壳体内，所述弹性部件被配置为用于提供弹性回复力，所述激励器被配置为用于提供驱动力。
  2. 根据权利要求1所述的按键发声装置,其中,所述帽部呈片状结构。
  3. 根据权利要求1所述的按键发声装置,其中,所述激励器包括压电式激励器、动圈式激励器、动铁式激励器、动磁式激励器或磁致伸缩式激励器。
  4. 根据权利要求1所述的按键发声装置,其中,所述弹性部件为双面胶。
  5. 一种电子设备，其中，包括壳体和如权利要求1-4中的任意一项所述的按键发声装置，在所述壳体上形成有安装孔，所述弹性部件与所述壳体连接，所述激励器悬置在所述安装孔中。
  6. 根据权利要求5所述的电子设备，其中，在所述壳体的围绕所述安装孔的部位设置有下凹的环形台阶结构，所述弹性部件嵌入所述环形台阶结构中。
  7. 根据权利要求5所述的电子设备，其中，所述按键发声装置被设置在所述壳体的侧壁上。
  8. 根据权利要求5所述的电子设备，其中，所述按键发声装置设置 有多个，多个所述按键发声装置形成立体声效果。
  9. 根据权利要求8所述的电子设备，其中，还包括重力传感器和与所述重力传感器连接的声音通道控制模块，所述重力传感器被配置为用于感测所述电子设备的方位信息，所述声音通道控制模块被配置为用于获取所述方位信息并根据所述方位信息切换多个所述按键发声装置的声道模式。
  10. 根据权利要求8所述的电子设备，其中，多个所述按键发声装置包括第一按键发声装置和第二按键发声装置,所述第一按键发声装置的工作频率为2KHz以上,所述第二按键发声装置的工作频率为1KHz以下。
  11. 根据权利要求8所述的电子设备，其中，多个所述按键发声装置两两对称地设置在所述壳体上。
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