WO2017117891A1 - 一种具有振动功能和发声功能的多功能装置 - Google Patents

一种具有振动功能和发声功能的多功能装置 Download PDF

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Publication number
WO2017117891A1
WO2017117891A1 PCT/CN2016/081382 CN2016081382W WO2017117891A1 WO 2017117891 A1 WO2017117891 A1 WO 2017117891A1 CN 2016081382 W CN2016081382 W CN 2016081382W WO 2017117891 A1 WO2017117891 A1 WO 2017117891A1
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WO
WIPO (PCT)
Prior art keywords
fixing portion
support member
elastic support
circuit system
vibration
Prior art date
Application number
PCT/CN2016/081382
Other languages
English (en)
French (fr)
Inventor
刘春发
许超
王继宗
Original Assignee
歌尔声学股份有限公司
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 歌尔声学股份有限公司 filed Critical 歌尔声学股份有限公司
Priority to US15/750,602 priority Critical patent/US10341778B2/en
Publication of WO2017117891A1 publication Critical patent/WO2017117891A1/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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/03—Transducers capable of generating both sound as well as tactile vibration, e.g. as used in cellular phones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/07—Suspension between moving magnetic core and housing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • 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

Definitions

  • the present invention relates to the field of electroacoustics, and in particular to a multi-function device having a vibration function and a sounding function.
  • the existing mobile terminal electronic device taking the mobile phone as an example, not only needs to be equipped with a speaker unit capable of sounding, but also needs to be equipped with a vibration motor to provide vibration feedback to the user to realize incoming calls, information, etc. Instant prompts.
  • a vibration motor to provide vibration feedback to the user to realize incoming calls, information, etc. Instant prompts.
  • the vibration unit and the sounding unit are assembled on a relatively small terminal product such as a mobile phone, it will undoubtedly take up a lot of space;
  • people can reduce the space occupied by the acoustic components by designing a multi-functional acoustic element that satisfies both vibration and vocalization functions.
  • the elastic support members supporting the magnetic circuit system are mostly flat sheet or plate-like structures, the magnet of the magnetic circuit system is disposed at the middle position of the elastic support member, and the elastic support member occupies the inside of the outer casing.
  • a large amount of space in the horizontal direction limits the size of the magnet, which is not conducive to increasing the BL value of the multifunctional acoustic element; on the other hand, since the extension space of the elastic arm of the horizontal elastic support member is limited, in order to adjust the vibration F0 value of the multifunctional acoustic element Only the width of the elastic arm can be reduced, and the narrowing of the elastic arm width reduces the reliability of the horizontal elastic support member.
  • the technical problem to be solved by the present invention is to provide a multi-functional device having a vibration function and a sounding function, wherein the elastic support member of the multi-function device neither limits the size of the magnet in the magnetic circuit system nor limits the elasticity.
  • the length and width of the support arm is to provide a multi-functional device having a vibration function and a sounding function, wherein the elastic support member of the multi-function device neither limits the size of the magnet in the magnetic circuit system nor limits the elasticity.
  • a multi-function device having a vibration function and a sounding function, including a peripheral housing, and a vibration system, a magnetic circuit system, and an elastic support member housed in the peripheral housing.
  • the magnetic circuit system is supported and fixed by the elastic support member and suspended in the peripheral housing;
  • the vibration system includes a diaphragm and a voice coil coupled to one side of the diaphragm;
  • the elastic support member includes a first fixing a second fixing portion, and a deformation portion connecting the first fixing portion and the second fixing portion;
  • the orthographic projection of the outer contour of the elastic supporting member in the vibration direction is a polygon surrounded by a plurality of straight lines or A geometric shape surrounded by a straight line and an arc, and a height difference between the first fixing portion and the second fixing portion.
  • the orthographic projection of the outer contour of the elastic support in the vibration direction is a rectangular or racetrack-shaped structure; the first fixing portion or the second fixing portion is located at an edge of the elastic support, and The first fixing portion or the second fixing portion has at least one set of oppositely disposed straight sides, and the straight sides are disposed corresponding to a pair of opposite straight sides of the magnetic circuit system or the bottom wall of the peripheral casing.
  • the first fixing portion is located at an intermediate position of the elastic support member
  • the second fixing portion is located at an edge position of the elastic support member
  • four straight sides of the edge of the second fixing portion are The straight side of the rectangular bottom wall of the peripheral housing corresponds to and is fixed to an edge position of the bottom wall of the peripheral housing.
  • the second fixing portion is located at an intermediate position of the elastic support member
  • the first fixing portion is located at an edge position of the elastic support member
  • four straight sides of the edge of the first fixing portion are The straight side of the rectangular bottom wall of the magnetic circuit system corresponds to and is fixed to an edge position of the bottom wall of the magnetic circuit system.
  • the peripheral casing is made of a metal material, including an upper casing and a lower casing, and the elastic supporting member is disposed between the lower casing and the magnetic circuit system, the first fixing portion or The second fixing portion is coupled to the bottom wall of the lower case by laser welding.
  • the corner portion of the metal peripheral casing is provided with an integrally injection molded injection molded part
  • the elastic support member is provided with a relief structure corresponding to the position of the corner of the peripheral frame; the elastic support member is contoured in the vibration direction
  • the orthographic projection is an octagon.
  • the elastic support member is a spring-like structure, and the deformation portion is an arc-shaped elastic arm.
  • the connecting portion of the deformation portion and the first fixing portion and the second fixing portion is provided with a circular arc transition portion for reducing stress concentration.
  • the vibration sounding device further includes a mass, the mass is combined with the magnetic circuit system; the magnetic circuit system includes a flat-shaped magnetic yoke, and a central position of the magnetic yoke is combined The magnet, the edge position is combined with the mass, and the mass is a closed annular structure.
  • the yoke is weldedly coupled to the first fixing portion or the second fixing portion, and a bottom wall of the lower shell corresponds to a welding position of the yoke and the elastic supporting member. There are soldering holes.
  • the elastic support member of the multi-function device of the present invention includes a first fixing portion, a second fixing portion, and a deformation portion connecting the first fixing portion and the second fixing portion in the middle, the elasticity
  • the orthographic projection of the outer contour of the support member in the vibration direction is a polygon surrounded by a plurality of straight lines or a geometric shape surrounded by straight lines and arcs, and the first fixed portion and the second fixed portion have a height difference.
  • the elastic support member of the multi-function device of the present invention is disposed between the magnetic circuit system and the bottom wall of the peripheral housing, and the elastic support member does not occupy the horizontal space of the magnetic circuit system, and does not limit the size of the magnet in the magnetic circuit system.
  • a larger size magnet can be placed in the vibrating sound device to increase the BL value of the multi-function device and improve the sensitivity of the product.
  • the elastic support member of the present invention has a three-dimensional structure
  • the first fixing portion and the second fixing portion have a height difference, so that the length of the deformation portion connecting the first fixing portion and the second fixing portion can be freely set.
  • the vibration F0 value of the vibration sounding device can be adjusted, not only without reducing the width of the deformation portion, but also increasing the width of the deformation portion to increase the stability of the elastic support member and avoiding the elastic support member. The deformation is broken when subjected to a large mechanical impact.
  • the projection of the outer contour of the elastic support of the present invention in the direction of vibration is a polygon surrounded by a plurality of straight lines or a geometric shape surrounded by straight lines and arcs.
  • the projection may be rectangular or racetrack-shaped, and the elastic support of the three-dimensional structure has better vibration stability and reduces the occurrence of polarization during vibration.
  • FIG. 1 is a schematic exploded view of a multi-function device of the present invention
  • Figure 2 is a cross-sectional view of the multi-function device of the present invention.
  • Figure 3 is a plan view of the elastic support member of the multifunctional device of the present invention
  • Figure 4 is a side view of the elastic support member of the multi-function device of the present invention.
  • Figure 5 is a schematic view showing the structure of the elastic support member racetrack of the multifunctional device of the present invention.
  • FIG. 6 is a schematic view showing the positional relationship between an elastic support member and a peripheral housing of the multi-function device of the present invention
  • Figure 7 is a schematic view showing the octagonal structure of the elastic support member of the multifunctional device of the present invention.
  • Figure 8 is a schematic structural view of a lower casing of the multifunctional device of the present invention.
  • the reference numerals include: 1, upper shell, 2, lower shell, 21, bottom wall, 22, injection molded parts, 23, welding avoidance holes, 3, yoke, 4, magnet, 5, washer, 6, Mass, 7, voice coil, 8, diaphragm, 9, reinforcing layer, 10, elastic support, 101, first fixed portion, 102, second fixed portion, 103, deformation portion, 104, avoidance structure, 105 , arc transition, 11, gasket, 12, circuit board, 13, spring.
  • the multi-function device with vibration function and sounding function of the present invention has a rectangular structure, and can simultaneously realize a vibration function and a sounding function, including a peripheral casing, and the peripheral casing has a receiving space and a peripheral casing.
  • the magnetic circuit system, the vibration system, and the elastic support member 10 are housed therein, wherein the magnetic circuit system includes a magnetic yoke 3, a magnet 4 fixedly attached to the center of the magnetic yoke 3, and a washer attached to the surface of the magnet 4.
  • the yoke 3 is designed as a flat structure extending in the horizontal direction, and the edge of the yoke 3 is fixedly coupled with the mass 6 , and the mass 6 is a closed annular structure. It surrounds the outer circumference of the magnet 4 and has a certain distance from the magnet 4 to form a gap.
  • the vibration system specifically includes a voice coil 7 and a diaphragm 8 fixedly coupled to the side of the voice coil 7 in order to enhance the product at a high frequency. Acoustic properties, the intermediate position of the diaphragm 8 is also combined with a reinforcing layer 9, wherein one end of the voice coil 7 is suspended in the gap between the magnet 4 and the mass 6.
  • the elastic support member 10 has an elastic deformation space in the vertical direction, and the support vibrator vibrates in the vertical direction.
  • the magnetic circuit system and the mass 6 together form a vibrator of the vibrating sounding device, and the vibrator is supported and fixed by the elastic support member 10 and suspended in the space of the peripheral casing.
  • the working principle After explaining the basic structure of the multi-function device, the working principle will be explained below: After the structure is assembled into a terminal product such as a mobile phone or a Pad and is turned on with an external circuit, the external circuit can supply an alternating current to the vibration sounding device, and since the resonance frequency of the speaker and the vibration motor itself is different, the driving voltage for driving the two also has For a big difference, for example, the resonant frequency of the motor is usually above 300 Hz, and the resonant frequency of the generating unit is below 300 Hz.
  • the voltage for driving the motor vibration only needs 0.35V, and the driving voltage of the sounding unit can reach 2V or so, and through the filter circuit in the terminal products such as mobile phones, the external current signal can be separately filtered to the range required by the vibration unit and the sounding unit, that is, the vibration unit can vibrate in the low frequency band, and the sounding unit is mainly in the
  • the sound of the high frequency band is as follows.
  • the principle of the normal operation of the vibration unit and the sounding unit is also achieved by the interaction of the current signal input into the voice coil 7 and the magnetic field: in the low frequency band, the voice coil 7 is energized and then in the magnetic field of the magnet 4. Affected by Ampere, it also gives the magnet 4 an equal and opposite reaction.
  • the magnet 4 is reciprocated in the elastic deformation direction (vertical direction) of the elastic support member 10, and the magnet 4 thereby drives the conductive yoke 3, the washer 5 and the mass fixed to the yoke 3 fixedly connected thereto.
  • Block 6 vibrates together; and in the high frequency band, after receiving the current signal of the external circuit, the voice coil 7 performs the motion of reciprocating cutting magnetic lines under the action of the electromagnetic field, thereby driving the vibration of the diaphragm 8, and the peripheral casing is facing the vibration.
  • the position of the film 8 is opened with an acoustic hole, so that sound waves can be radiated to the outside to realize sound generation.
  • the elastic support member 10 includes a first fixing portion 101, a second fixing portion 102, and a deformation portion 103 connecting the middle of the first fixing portion 101 and the second fixing portion 102.
  • the orthographic projection of the outer contour of the elastic support member 10 in the vibration direction is a polygon surrounded by a plurality of straight lines or a geometric shape surrounded by straight lines and arcs, and the vertical direction between the first fixing portion 101 and the second fixing portion 102 The height difference. That is, the elastic support member 10 as a whole has a non-planar three-dimensional structure.
  • the elastic support member 10 of the present invention is disposed between the magnetic circuit system and the bottom wall of the peripheral casing, the elastic support member 10 vibrates in the vertical direction, and the elastic support member 10 does not occupy the horizontal space of the magnetic circuit system, and does not limit the magnetic force.
  • the size of the magnet 4 in the road system makes it possible to provide a larger-sized magnet in the vibration sounding device, increase the BL value of the vibration multi-function device, and improve the sensitivity of the product.
  • the elastic support member 10 of the present invention has a three-dimensional structure
  • the first fixing portion 101 and the second fixing portion 102 have a height difference in the vertical direction, thereby connecting the first fixing portion 101 and the second fixing portion.
  • the length of the deformation portion 103 between the 102 can be freely set, and the vibration F0 value of the vibration sounding device can be adjusted by lengthening the deformation portion 103, so that it is not necessary to reduce the width of the deformation portion 103, and the deformation portion can be enlarged.
  • the width of the 103 is to increase the stability of the elastic support member 10, and to prevent the deformation of the deformation portion when the elastic support member is subjected to a large mechanical impact force.
  • the orthographic projection of the outer contour of the elastic support member 10 in the vibration direction is a rectangular or racetrack shape
  • the first fixing portion 101 or the second fixing portion 102 is located at the edge of the elastic support member 10
  • the first fixing portion 101 or the second fixing portion The four straight sides of the portion 102 are disposed corresponding to the rectangular bottom wall of the magnetic circuit system or the peripheral housing.
  • the orthographic projection of the outer contour of the elastic support member 10 in the vibration direction is a rectangle, and the rectangle referred to herein may be a rectangle or a square, and includes four straight sides.
  • the rectangle is approximately rectangular, and is not limited to any structure with a right angle.
  • the chamfer may be chamfered (rounded or inverted C angle), and the straight edge may have a small protrusion or depression.
  • the orthographic projection of the outer contour of the elastic support member 10 in the vibration direction is a racetrack shape, and the racetrack-shaped structure herein refers to a structure including two parallel sides, and two ends of the two parallel sides are respectively connected by a circular arc. .
  • the elastic support member of the three-dimensional structure Since the projection of the outer contour of the elastic support member 10 of the present invention in the vibration direction is a rectangular or racetrack-shaped structure, the elastic support member of the three-dimensional structure has better vibration stability, ensures vibration of the vibrator in the vibration direction, and reduces the occurrence of polarization.
  • the first fixing portion 101 of the elastic support member 10 is located at an intermediate position of the elastic support member 10
  • the second fixing portion 102 is located at the edge position of the elastic support member 10
  • the four edges of the second fixing portion 102 are straight.
  • the side corresponds to the straight side of the rectangular bottom wall of the peripheral housing and is fixed to the edge position of the bottom wall of the peripheral housing.
  • the structure of the elastic support member 10 can also be arranged in another embodiment, that is, the second fixing portion 102 is located at an intermediate position of the elastic support member 10, and the first fixing portion 101 is located at an edge position of the elastic support member 10.
  • the four straight sides of the edge of the first fixing portion 101 correspond to the straight sides of the rectangular bottom wall of the magnetic circuit system, and are fixed to the edge position of the bottom wall of the magnetic circuit system.
  • the peripheral housing is made of a metal material, including an upper case 1 and a lower case 2 which are coupled together, and the elastic support member 10 is disposed between the bottom wall 21 of the lower case 2 and the magnetic circuit system, and the first fixing portion 101 Or the second fixing portion 102 is bonded to the bottom wall 21 of the lower casing 2 by laser welding.
  • the elastic support member and the peripheral housing are fixed by gluing.
  • the outer casing is made of a metal material, and the elastic support member 10 is fixedly connected to the bottom wall 21 of the lower casing 2 by laser welding. , the connection strength is greater, so that the elastic support 10 does not easily fall off the bottom wall 21 of the outer casing 2.
  • the corner of the metal casing is provided with an integrally injection molded injection molded part 22, and the outer contour of the elastic support 10 in the direction of vibration is projected to avoid the octagonal structure of the injection molded part 22.
  • the octagonal structural elastic support member 10 is an elastic support member that is projected into a rectangular structure in the direction of vibration, and the intersection of any two right-angled edges of the outer contour is cut off. The triangular regions form the relief structure 104 and in turn generate an octagonal structure.
  • the elastic support member 10 can be disposed in any polygonal shape according to the position of the injection molded member in the metal casing, which is not limited by the present invention.
  • the injection molded part 22 is integrally injection molded with the lower case 2, and the position of the injection molded part 22 connected to the lower case 2 is provided with some wedge-shaped serrations, and the lower case 2 is provided with a wedge-shaped groove corresponding to the above-mentioned serrations.
  • the injection strength between the injection molded part 22 and the lower case 2 is enhanced to prevent the injection molded part 22 from being detached from the lower case 2.
  • the yoke 3 is fixedly coupled to the first fixing portion 101 or the second fixing portion 102 by laser welding, and the bottom wall 21 of the lower casing 2 corresponds to the welding of the yoke 3 and the elastic supporting member 10.
  • the welding avoidance hole 23 is disposed at a position, and the number, shape and position of the welding avoidance hole 23 can be correspondingly arranged on the bottom wall 21 of the lower casing 2 according to the specific welding position of the yoke 3 and the elastic support 10, and the present invention does not Limited.
  • the welding avoidance hole 23 can also check the welding condition of the elastic support member 10 and the yoke 3 by the welding avoidance hole.
  • the elastic support member 10 is a spring-like structure, and the deformation portion 103 of the elastic support member 10 is an arc-shaped elastic arm.
  • the connection between the deformation portion 103 and the first fixing portion 101 and the second fixing portion 102 is provided with a circular arc transition portion 105 for reducing stress concentration, and the circular arc transition portion 105 is located at the height of the section of the deformation portion 103. Both sides of the direction.
  • the arrangement of the arc transition portion 105 can effectively reduce the stress concentration at the junction between the deformation portion 103 and the first fixing portion 101 and the second fixing portion 102, enhance the fatigue strength of the elastic support member 10, and prolong the service life of the elastic support member 10.
  • the diaphragm 8 is joined to the side wall of the upper casing 1, and a backing ring 11 is provided between the diaphragm 8 and the upper casing 1.
  • the backing ring 11 is also a closed annular structure. The arrangement of the backing ring 11 forms a certain gap between the diaphragm 8 and the upper shell 1 to protect the diaphragm 8 from direct contact with the upper shell of the metal material when vibrating. .
  • the peripheral housing is made of a metal material, and if the conventional electrical connection is used, the insulating layer located in the outer layer of the lead of the voice coil 7 is easily broken, causing a short circuit, and therefore, the vibration of the embodiment
  • the sounding device is also improved in the electrical connection mode, specifically: the inner side of the lower case 2 is glued
  • the circuit board 12 is fixed to the junction, so that the lead of the voice coil 7 can be spot-welded to the pad on the circuit board 12 inside the peripheral casing, and the circuit board 12 is soldered to the outside of the lower casing 2 by reflow soldering.
  • the spring 13 and the spring 13 are electrically connected to the external circuit, so that the conduction of the internal and external circuits is completely realized.
  • the spring 13 and the pad of the circuit board and the injection molded part 22 are correspondingly disposed at the corner position of the lower case 2, which does not occupy the internal assembly space and does not affect the volume of the magnetic circuit; meanwhile, since the spring 13 passes through the injection molded part 22 Further fixed, the height of the spring 13 in the vertical direction exceeds the vertical space of the lower casing 2, and a part of the spring 13 is wrapped therein to prevent the spring 13 from shaking; in the above electrical connection, the lead of the voice coil 7 is electrically connected. The pad is received, the lead does not need to extend to the outside of the peripheral housing for spot welding, and due to the presence of the plastic injection molded part 22, the electrostatic breakdown can be effectively prevented under the premise that the internal and external circuits are turned on.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

本发明公开了一种多功能装置，包括***壳体以及振动***、磁路***和弹性支撑件，磁路***由弹性支撑件支撑固定并悬置于***壳体内，振动***包括振膜和音圈，弹性支撑件包括具有高度差的第一固定部和第二固定部，以及连接第一固定部和第二固定部的形变部；弹性支撑件在振动方向的正投影为多边形或跑道形；第一固定部或第二固定部位于弹性支撑件的边缘，并且第一固定部或第二固定部的四条直边与磁路***或***壳体的矩形底壁对应设置。本发明中弹性支撑件不占用磁路***的水平空间，可以设置大尺寸的磁铁，增大振动发声装置的BL值，由于弹性支承件为立体结构，因此不会限制形变部的长度和宽度，便于调节振动发声装置的F0值。

Description

一种具有振动功能和发声功能的多功能装置 技术领域
本发明涉及电声领域，具体的涉及一种具有振动功能和发声功能的多功能装置。
背景技术
现有的移动终端电子装置，以手机为例，其内部不仅需要装配可以发声的扬声器单元，同时考虑到一些安静场合的需要，还需要装配振动马达对用户进行振动反馈，实现来电、信息等的即时提示。但是，由于当前电子产品越来越向轻量化、薄型化的方向发展，如果在手机等装配空间本来就比较小的终端产品上同时组装振动单元和发声单元，无疑会占用较大的空间；为了解决这一问题，人们通过设计一种多功能的声学元件同时满足振动和发声两个功能，以减小声学元件占用的空间。
现有的多功能声学元件结构中，支撑磁路***的弹性支撑件多为平面的片状或板状结构，磁路***的磁铁设置于弹性支撑件的中间位置，弹性支撑件占据了外壳内部水平方向上的大量空间，限制了磁铁尺寸，不利于提升多功能声学元件的BL值；另一方面，由于水平弹性支撑件的弹力臂的延伸空间有限，为了调节多功能声学元件的振动F0值，只能减小弹力臂的宽度，弹力臂宽度变窄则会降低水平弹性支撑件的可靠性，当多功能声学元件受到较大机械冲击力时弹力臂容易断裂而影响产品性能。因此，针对上述问题，有必要提供一种新型弹性支撑件，既不会限制磁路***中磁铁尺寸的大小，也不会限制弹力臂的长度与宽度。
发明内容
本发明所要解决的技术问题是：提供一种具有振动功能和发声功能的多功能装置，所述多功能装置的弹性支撑件既不会限制磁路***中磁铁尺寸的大小，也不会限制弹性支撑件弹力臂的长度与宽度。
为了实现上述目的，本发明采用以下技术方案：一种具有振动功能和发声功能的多功能装置，包括***壳体，以及收容于所述***壳体内的振动***、磁路***和弹性支撑件，所述磁路***由所述弹性支撑件支撑固定并悬置于所述***壳体内；振动***包括振膜和结合于所述振膜一侧的音圈；所述弹性支撑件包括第一固定部、第二固定部，以及连接所述第一固定部和所述第二固定部中间的形变部；所述弹性支撑件在振动方向外轮廓的正投影为由多条直线围成的多边形或者由直线和弧线围成的几何形状，所述第一固定部和所述第二固定部之间具有高度差。
作为一种改进，所述弹性支撑件在振动方向外轮廓的正投影为矩形或跑道形结构；所述第一固定部或所述第二固定部位于所述弹性支撑件的边缘，并且所述第一固定部或所述第二固定部至少具有一组相对设置的直边，所述直边与所述磁路***或所述***壳体的底壁的一组相对的直边对应设置。
作为一种改进，所述第一固定部位于所述弹性支撑件的中间位置，所述第二固定部位于所述弹性支撑件的边缘位置，并且所述第二固定部边缘的四条直边与所述***壳体的矩形底壁的直边对应，并且固定于所述***壳体底壁的边缘位置。
作为一种改进，所述第二固定部位于所述弹性支撑件的中间位置，所述第一固定部位于所述弹性支撑件的边缘位置，并且所述第一固定部边缘的四条直边与所述磁路***矩形底壁的直边对应，并且固定于所述磁路***底壁的边缘位置。
作为一种改进，所述***壳体由金属材料制成，包括上壳和下壳，所述弹性支撑件设于所述下壳和所述磁路***之间，所述第一固定部或所述第二固定部通过激光焊接结合于所述下壳的底壁。
作为一种改进，所述金属***壳体的角部设有一体注塑成型的注塑件，弹性支撑件对应所述***框架角部的位置设有避让结构；所述弹性支撑件在振动方向外轮廓的正投影为八边形。
作为一种改进，所述弹性支撑件为弹簧状结构，所述形变部为弧形的弹力臂。
作为一种改进，所述形变部与所述第一固定部和第二固定部的连接处设有减少应力集中的圆弧过渡部。
作为一种改进，所述振动发声装置还包括质量块，所述质量块与所述磁路***结合；所述磁路***包括平板状的导磁轭，所述导磁轭的中心位置结合有磁铁，边缘位置结合有所述质量块，所述质量块为闭合的环形结构。
作为一种改进，所述导磁轭与所述第一固定部或所述第二固定部焊接结合，所述下壳的底壁对应所述导磁轭与所述弹性支撑件的焊接位置设有焊接避让孔。
相较于现有技术而言，本发明的多功能装置的弹性支撑件包括第一固定部、第二固定部，以及连接第一固定部和第二固定部在中间的形变部，所述弹性支撑件在振动方向外轮廓的正投影为由多条直线围成的多边形或者由直线和弧线围成的几何形状，所述第一固定部和所述第二固定部之间具有高度差。
首先，本发明的多功能装置的弹性支承件设置在磁路***与***壳体的底壁之间，弹性支撑件不占用磁路***的水平空间，不会限制磁路***中磁铁尺寸，因此可以在振动发声装置中设置更大尺寸的磁铁，提升多功能装置的BL值，提高产品的灵敏度。
其次，由于本发明的弹性支撑件为立体结构，第一固定部与第二固定部之间具有高度差，因此连接第一固定部与第二固定部之间的形变部的长度可以自由设置，通过加长形变部的长度即可实现对振动发声装置振动F0值的调节，不仅无需减小形变部的宽度，而且还可以增大形变部的宽度以增加弹性支撑件的稳定性，避免弹性支撑件遭受较大机械冲击力时形变部发生断裂。
再次，本发明的弹性支撑件在振动方向上外轮廓的投影为由多条直线围成的多边形或者由直线和弧线围成的几何形状。具体的，投影可以是矩形或跑道形，此种立体结构的弹性支撑件的振动稳定性更好，减少振动过程中偏振的出现。
附图说明
图1为本发明多功能装置的分解结构示意图；
图2为本发明多功能装置的剖视图；
图3为本发明多功能装置弹性支撑件的俯视图
图4为本发明多功能装置弹性支撑件的侧视图；
图5为本发明多功能装置弹性支承件跑道形结构示意图；
图6为本发明多功能装置弹性支撑件与***壳***置关系示意图；
图7为本发明多功能装置弹性支撑件八边形结构示意图；
图8为本发明多功能装置下壳结构示意图；
其中的附图标记包括：1、上壳，2、下壳，21、底壁，22、注塑件，23、焊接避让孔，3、导磁轭，4、磁铁，5、华司，6、质量块，7、音圈，8、振膜，9、补强层，10、弹性支撑件，101、第一固定部，102、第二固定部，103、形变部，104、避让结构，105、圆弧过渡部，11、垫环，12、电路板，13、弹簧。
具体实施方式
下面结合附图，详细说明本发明内容：
实施例：
参阅图1-图2所示，本发明的具有振动功能和发声功能的多功能装置为矩形结构，可以同时实现振动功能和发声功能，包括***壳体，***壳体具有收容空间，***壳体内部收容有磁路***、振动***以及弹性支撑件10，其中，磁路***包括导磁轭3、粘结固定在导磁轭3的中心置的磁铁4以及贴接在磁铁4表面的华司5，需要说明的是，此处的导磁轭3设计为一沿水平方向延伸的平板状结构，导磁轭3的边缘位置还固定结合有质量块6，质量块6为闭合的环形结构，其环绕于磁铁4的外周，与磁铁4之间存在一定的距离，形成间隙；振动***具体包括音圈7以及固定结合在音圈7一侧的振膜8，为了增强产品在高频处的声学性能，振膜8的中间位置还结合有补强层9，其中，音圈7的一端悬置于磁铁4与质量块6之间的间隙内。弹性支撑件10具有沿竖直方向上的弹性形变空间，支撑振子在竖直方向上振动。
由上述结构可知，磁路***和质量块6共同形成振动发声装置的振子，振子通过弹性支撑件10支撑固定并悬置于***壳体的空间内。
在说明该多功能装置的基本结构以后，下面对其工作原理进行阐述：上述 结构装配到手机、Pad等终端产品中并与外部电路导通以后，外部电路可向振动发声装置提供交变电流，而由于扬声器和振动马达本身的谐振频率不同，驱动二者工作的驱动电压也有较大的不同，比如，马达的谐振频率通常在300赫兹以上，而发生单元的谐振频率则在300赫兹以下，驱动马达振动的电压仅需要0.35V即可，而发声单元的驱动电压则可以达到2V左右，而通过手机等终端产品中的滤波电路可以将外部电流信号分别滤至振动单元和发声单元所需要的范围，也就是说，振动单元可在低频段发生振动，而发声单元则主要在高频段发声，至于振动单元和发声单元正常工作的原理则同样是通过输入音圈7的电流信号以及磁场的共同作用来完成的：低频段时，音圈7通电后在磁铁4的磁场中会受到安培力的作用，同时也会给磁铁4一个大小相等方向相反的反作用力，使得磁铁4在弹性支撑件10的弹性形变方向上(竖直方向)做往复运动，磁铁4从而带动与之固定连接的导磁轭3、华司5以及固定在导磁轭3上的质量块6一起振动；而高频段时，音圈7在接收到外部电路的电流信号以后，会在电磁场的作用下做往复切割磁力线的运动，从而带动振膜8的振动，***壳体正对振膜8的位置开设有出声孔，因而能够向外界辐射声波，实现发声。
本发明的多功能装置，为了解决现有设计中弹性支撑件限制自身弹力臂的长度和宽度，以及限制磁铁尺寸的问题，提供了一种新型弹性支撑件，具体的，参阅图1至图6共同所示，弹性支撑件10包括第一固定部101、第二固定部102、以及连接第一固定部101和第二固定部102中间的形变部103。弹性支撑件10在振动方向外轮廓的正投影为由多条直线围成的多边形或者由直线和弧线围成的几何形状，第一固定部101和第二固定部102之间具有竖直方向的高度差。即弹性支撑件10整体为非平面的立体结构。
由于本发明的弹性支撑件10设置在磁路***与***壳体的底壁之间，弹性支撑件10在竖直方向振动，弹性支撑件10不占用磁路***的水平空间，不会限制磁路***中磁铁4的尺寸，因此可以在振动发声装置中设置更大尺寸的磁铁，提升振动多功能装置的BL值，提高产品的灵敏度。
其次，由于本发明的弹性支撑件10为立体结构，第一固定部101与第二固定部102之间具有竖直方向的高度差，因此连接第一固定部101与第二固定部 102之间的形变部103的长度可以自由设置，通过加长形变部103的长度即可实现对振动发声装置振动F0值的调节，不仅无需减小形变部103的宽度，而且还可以增大形变部103的宽度以增加弹性支撑件10的稳定性，避免弹性支撑件遭受较大机械冲击力时形变部发生断裂。
优选的，弹性支撑件10在振动方向外轮廓的正投影为矩形或跑道形，第一固定部101或第二固定部102位于弹性支撑件10的边缘，并且第一固定部101或第二固定部102的四条直边与磁路***或***壳体的矩形底壁对应设置。其中，如图3和图6所示，弹性支撑件10在振动方向外轮廓的正投影为矩形，此处所指矩形可以为长方形也可以为正方形，包括四条直边。其中矩形为近似矩形即可，不限于任意夹角为直角的结构，夹角处可以设置倒角(倒圆角或倒C角)，直边上也可以有小幅的凸起或凹陷等。如图5所示，弹性支撑件10在振动方向外轮廓的正投影为跑道形，此处的跑道形结构指包含两条平行边，且两条平行边的两端分别通过圆弧连接的结构。
由于本发明的弹性支撑件10在振动方向上外轮廓的投影为矩形或跑道形结构，此种立体结构的弹性支撑件的振动稳定性更好，确保振子沿振动方向振动，减少偏振的出现。
优选的，本实施例中弹性支撑件10的第一固定部101位于弹性支撑件10的中间位置，第二固定部102位于弹性支撑件10的边缘位置，并且第二固定部102边缘的四条直边与***壳体的矩形底壁的直边对应，并且固定于***壳体底壁的边缘位置。当然，弹性支撑件10的结构也可以采用另外一种实施例中的设置方式，即第二固定部102位于弹性支撑件10的中间位置，第一固定部101位于弹性支撑件10的边缘位置，并且第一固定部101边缘的四条直边与磁路***矩形底壁的直边对应，并且固定于磁路***底壁的边缘位置。
优选的，***壳体由金属材料制成，包括结合在一起的上壳1和下壳2，弹性支撑件10设于下壳2的底壁21和磁路***之间，第一固定部101或第二固定部102同激光焊接结合与下壳2的底壁21上。与现有技术中弹性支撑件与***壳体之间通过胶接固定相比，本发明中外壳由金属材料制成，弹性支撑件10通过激光焊接的方式与下壳2的底壁21固定连接，连接强度更大，使弹性支撑件 10不容易从外壳2的底壁21上脱落。
优选的，金属外壳的角部设有一体注塑成型的注塑件22，弹性支撑件10在振动方向外轮廓的投影为能够避让注塑件22的八边形结构。如图7所示，本实施例中八边形结构弹性支撑件10为是在振动方向上外轮廓正投影为矩形结构的弹性支撑件的基础上将外轮廓任意两条直角边交汇处切去三角形区域形成避让结构104进而生成八边形结构。除了八边形结构外，弹性支撑件10可以根据注塑件在金属外壳中的位置对应设置成任意多边形，本发明并不对此进行限定。
优选的，注塑件22与下壳2一体注塑成型，注塑件22与下壳2相连接的位置设有一些楔形的锯齿，下壳2上设有对应上述锯齿的楔形槽，这种结构设计可以增强注塑件22与下壳2之间的注塑强度，防止注塑件22与下壳2脱离。
优选的，如图8所示，导磁轭3与第一固定部101或第二固定部102通过激光焊接固定结合，下壳2的底壁21对应导磁轭3与弹性支撑件10的焊接位置设有焊接避让孔23，焊接避让孔23的个数、形状和位置可以根据导磁轭3与弹性支撑件10的具体焊接位置在下壳2的底壁21上对应设置，本发明并不对此进行限定。焊接避让孔23除了具有焊接避让的作用外，还可以通过焊接避让孔检查弹性支承件10与导磁轭3的焊接情况。
优选的，弹性支撑件10为弹簧状结构，弹性支撑件10的形变部103为弧形的弹力臂。优选的，如图3所示，形变部103与第一固定部101、第二固定部102的连接处设有减少应力集中的圆弧过渡部105，圆弧过渡部105位于形变部103截面高度方向的两侧。圆弧过渡部105的设置可以有效减少形变部103与第一固定部101、第二固定部102连接处的应力集中，增强弹性支撑件10的耐疲劳强度，延长弹性支撑件10的使用寿命。
优选的，振膜8接合在上壳1的侧壁，振膜8与上壳1之间设有垫环11。垫环11也为闭合的环状结构，垫环11的设置使得振膜8与上壳1之间形成一定的间隙，保护振膜8在振动时不会直接触碰到金属材质的上壳1。
另外，由于本实施方式中，***壳体为金属材质，如果采用传统的电连接方式，音圈7的引线中位于外层的绝缘层容易被击碎，造成短路，因此，本实施方式的振动发声装置在电连接方式上也有所改进，具体为：下壳2的内侧粘 结固定有电路板12，这样，音圈7的引线可以在***壳体的内部与电路板12上的焊盘点焊固定，电路板12又通过回流焊的方式焊接有延伸至下壳2的外部的弹簧13，弹簧13与外部电路导通，这样完整的实现内外部电路的导通。其中，弹簧13与电路板的焊盘以及注塑件22均对应设在下壳2的角部位置，不额外占用其内部装配空间，不会影响磁路的体积；同时，由于弹簧13通过注塑件22进一步固定，弹簧13在竖直方向的高度超出下壳2的竖向空间，把弹簧13的一部分包裹在里面，可以防止弹簧13晃动；上述电连接方式中，与音圈7的引线电连接的焊盘内收，引线不需要延伸至***壳体的外侧进行点焊，又由于塑料材质的注塑件22的存在，可以在保证内外部电路导通的前提下有效防止静电击穿。
以上仅为本发明实施案例而已，并不用于限制本发明，但凡本领域普通技术人员根据本发明所揭示内容所作的等效修饰或变化，皆应纳入权利要求书中记载的保护范围内。

Claims (10)

  1. 一种具有振动功能和发声功能的多功能装置，包括***壳体，以及收容于所述***壳体内的振动***、磁路***和弹性支撑件，所述磁路***由所述弹性支撑件支撑固定并悬置于所述***壳体内；振动***包括振膜和结合于所述振膜一侧的音圈；其特征在于，
    所述弹性支撑件包括第一固定部、第二固定部，以及连接所述第一固定部和所述第二固定部中间的形变部；
    所述弹性支撑件在振动方向外轮廓的正投影为由多条直线围成的多边形或者由直线和弧线围成的几何形状，所述第一固定部和所述第二固定部之间具有高度差。
  2. 根据权利要求1所述的多功能装置，其特征在于，所述弹性支撑件在振动方向外轮廓的正投影为矩形或跑道形结构；
    所述第一固定部或所述第二固定部位于所述弹性支撑件的边缘，并且所述第一固定部或所述第二固定部至少具有一组相对设置的直边，所述直边与所述磁路***或所述***壳体的底壁的一组相对的直边对应设置。
  3. 根据权利要求2所述的多功能装置，所述第一固定部位于所述弹性支撑件的中间位置，所述第二固定部位于所述弹性支撑件的边缘位置，并且所述第二固定部边缘的四条直边与所述***壳体的矩形底壁的直边对应，并且固定于所述***壳体底壁的边缘位置。
  4. 根据权利要求2所述的多功能装置，其特征在于，所述第二固定部位于所述弹性支撑件的中间位置，所述第一固定部位于所述弹性支撑件的边缘位置，并且所述第一固定部边缘的四条直边与所述磁路***矩形底壁的直边对应，并且固定于所述磁路***底壁的边缘位置。
  5. 根据权利要求1所述的多功能装置，其特征在于，所述***壳体由金属材料制成，包括上壳和下壳，所述弹性支撑件设于所述下壳和所述磁路***之间，所述第一固定部或所述第二固定部通过激光焊接结合于所述下壳的底壁。
  6. 根据权利要求5所述的多功能装置，其特征在于，所述金属***壳体的角部设有一体注塑成型的注塑件，弹性支撑件对应所述***框架角部 的位置设有避让结构；所述弹性支撑件在振动方向外轮廓的正投影为八边形。
  7. 根据权利要求1所述的多功能装置，其特征在于，所述弹性支撑件为弹簧状结构，所述形变部为弧形的弹力臂。
  8. 根据权利要求7所述的多功能装置，其特征在于，所述形变部与所述第一固定部和第二固定部的连接处设有减少应力集中的圆弧过渡部。
  9. 根据权利要求1所述的多功能装置，其特征在于，所述振动发声装置还包括质量块，所述质量块与所述磁路***结合；所述磁路***包括平板状的导磁轭，所述导磁轭的中心位置结合有磁铁，边缘位置结合有所述质量块，所述质量块为闭合的环形结构。
  10. 根据权利要求5或9所述的多功能装置，其特征在于，所述导磁轭与所述第一固定部或所述第二固定部焊接结合，所述下壳的底壁对应所述导磁轭与所述弹性支撑件的焊接位置设有焊接避让孔。
PCT/CN2016/081382 2016-01-04 2016-05-09 一种具有振动功能和发声功能的多功能装置 WO2017117891A1 (zh)

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