WO2019010966A1 - 微型线性振动器 - Google Patents

微型线性振动器 Download PDF

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Publication number
WO2019010966A1
WO2019010966A1 PCT/CN2018/075155 CN2018075155W WO2019010966A1 WO 2019010966 A1 WO2019010966 A1 WO 2019010966A1 CN 2018075155 W CN2018075155 W CN 2018075155W WO 2019010966 A1 WO2019010966 A1 WO 2019010966A1
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WIPO (PCT)
Prior art keywords
coil
magnet
weight
substrate
shield
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PCT/CN2018/075155
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English (en)
French (fr)
Inventor
刘齐宇
汪辰
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池州市弘港科技电子有限公司
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Publication of WO2019010966A1 publication Critical patent/WO2019010966A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets

Definitions

  • the present invention relates to the field of vibrators, and more particularly to a miniature linear vibrator having a natural oscillation frequency formed by a vibrator and a support.
  • the traditional micro-vibrators for tactile feedback are mostly realized by the DC motor driving the vibration generated by the rotation of the eccentric wheel; since the DC motor is reversing with the brush, its life is limited by the brush, and it is difficult to break through 200 hours.
  • the present invention provides a miniature linear vibrator, which solves the problem that the existing vibrator has a short service life, a long startup time, a slow response speed, and a feedback delay. Used for game consoles or other handheld devices to provide tactile feedback.
  • the micro linear vibrator includes: a substrate, a coil, a magnet, a shield, a weight, a connecting body, a support body and a spring piece;
  • One end of the coil is fixed on the substrate, and the coil and the substrate constitute a stator of the vibrator; the coil generates an electromagnetic force when energized;
  • the magnet is disposed above the coil, and a side away from the coil is fixed inside the shield;
  • the weight is fixed to the side of the weight with the weight, the shield is fixed on the weight, and the connector accommodates the weight, the magnet and the The shield is inside; the connecting body, the weight, the screen cover and the magnet constitute a vibrator of the vibrator;
  • the support body is fixed on the substrate, and the coil, the magnet, the shield cover, the weight and the connecting body are located in a space formed by the support body and the substrate;
  • One end of the elastic piece is fixed on the support body, and the other end is fixed on the connecting body;
  • the vibrator is moved linearly along or away from the coil along the coil axis by the electromagnetic force of the coil and the magnetic force of the magnet itself.
  • the elastic piece is provided with an opening;
  • the vibrator further includes: a buffer body;
  • One end of the buffer body is fixed on the support body, and the other end is fixed on the connecting body; and the buffer body is located in an opening of the elastic piece therein.
  • a side of the shielding cover away from the magnet is provided with a recessed portion surrounding the outer portion of the shielding cover for constraining the magnet such that the magnet resides in the shielding cover center.
  • At least one weight is disposed in the connecting body, and the weight is disposed between the shield and the connecting body.
  • the magnet, the shield, the weight and the connecting body are riveted in order from bottom to top.
  • the coil is soldered, glued or bonded to the substrate.
  • the substrate comprises a current conversion circuit for outputting a pulsating direct current of a set frequency.
  • the set frequency is 150 Hz to 250 Hz.
  • the substrate is fixed on the lower cover; the upper cover is engaged with the lower cover to form a space for accommodating the substrate, a coil, the magnet, the shield, the connecting body, the support body, and a spring piece.
  • a vibration buffer body is further included; the vibration buffer body is disposed between the connecting body and the substrate.
  • the coil is fixed on the substrate, so that the coil and the substrate constitute the stator of the vibrator; then the magnet, the shield cover, the weight and the connecting body which are sequentially fixed are used as the vibrator of the vibrator;
  • the electromagnetic force interacts with the magnetic force of the magnet to cause the vibrator to move linearly along or away from the coil axis, and the vibrator can be regarded as a linear motor.
  • the oscillator can be synchronized with the oscillation frequency of the shrapnel to achieve a fast start of the vibrator, thereby obtaining a faster response speed and reducing the response delay time.
  • FIG. 1 is a perspective view of a miniature linear vibrator according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a miniature linear vibrator according to an embodiment of the present invention.
  • FIG. 3 is a structural exploded view of a miniature linear vibrator according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a vibration state of a miniature linear vibrator according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a vibration buffer body of a miniature linear vibrator according to an embodiment of the present invention.
  • one coil, one magnet, and one elastic piece may constitute a vibration unit; in the subsequent embodiment, the vibration unit may further include a buffer body.
  • the micro linear vibrator may further include a plurality of vibration units, that is, including a plurality of coils, a plurality of magnets, a plurality of elastic pieces, and a plurality of buffer bodies. It can be understood that when a plurality of vibration units are used in combination, it is necessary to ensure that the operating frequency of each vibration unit is the same and the phase is synchronized, and the vibration amount is superimposed.
  • each coil can be connected in series and then powered by the same power source, so that each coil obtains the same driving current.
  • the technician can also implement according to other synchronization technologies, and will not be described in detail herein. To simplify the description, two vibration units are used in the following embodiments for explanation.
  • an embodiment of the present invention provides a miniature linear vibrator, which includes:
  • Substrate 11 coil 12, magnet 20, shield 21, connector 30, weight 40, support 60 and spring 70;
  • One end of the coil 12 is fixed on the substrate 11, and the coil 12 and the substrate 11 constitute a stator of the vibrator; the coil 12 generates an electromagnetic force when energized;
  • the magnet 20 is disposed above the coil 12, and a side away from the coil 12 (the upper side in Fig. 1) is fixed to the inside of the shield case 21 (upper bottom surface in Fig. 1).
  • the shield case 21 is made of a highly magnetically permeable material, and the magnetic force of the magnet 20 is introduced into the gap between the magnet 20 and the shield case 21 to prevent the magnetic force from leaking into the air outside the shield case 21, so that the magnetic induction strength of the air gap can be improved.
  • the strength at which the coil 12 is energized and the magnets 20 are attracted or repelled to each other is increased, thereby improving the conversion efficiency of electrical energy and mechanical vibration energy.
  • the connecting body 30 is fixed on the weight 40 (the lower side in FIG. 1) on the weight 40, and the connecting body 30 accommodates the magnet 20, the shield 21 and the weight 40 inside; the connecting body 30, the weight Block 40, screen cover 21 and magnet 20 constitute the vibrator 50 of the vibrator;
  • the support body 60 is fixed on the substrate 11, and the coil 12, the magnet 20, the shield cover 21, the weight 40, the elastic piece 70 and the connecting body 30 are located in the space formed by the support body 60 and the substrate 11;
  • One end of the elastic piece 70 (the upper end in FIG. 1) is fixed on the support body 60, and the other end (the lower end in FIG. 1) is fixed on the connecting body 30;
  • the vibrator moves linearly along the axis of the coil 12 toward or away from the coil 12.
  • the elastic piece 70 is provided with an opening 71.
  • the vibrator further includes a pair of buffer bodies 80; one end of each buffer body 80 (upper end in FIG. 1) is fixed on the support body 60, and the other end (lower end in FIG. 1) is fixed on the connecting body 30; and the buffer body 80 is located within the opening 71 of the shrapnel 70.
  • the buffer body 80 needs to be used symmetrically, and thus can be implemented by two buffer bodies 80.
  • the substrate 11 is a printed circuit board PCB.
  • the substrate 11 may further include a substrate and a circuit disposed on the substrate.
  • the circuit may be implemented by using a chip, a separate component, or the like, which is not limited herein.
  • the manner in which the coil 12 is fixed on the substrate 11 may be soldering, riveting, pasting or binding.
  • the coil 12 is soldered to the substrate 11.
  • the shield 21 is provided with a recess 211 away from one side of the magnet 20 (upper surface in FIG. 2).
  • the recessed portion 211 is for constraining the magnet 20 to be centered on the shield case 21.
  • the coil 12 When the coil 12 is energized, the coil 12 and the magnet 20 attract or repel each other, causing the magnet 20 to simultaneously drive the shield 21, the weight 40, and the connector 30 to perform synchronous motion.
  • the elastic piece 70 is stretched or compressed to realize the conversion of kinetic energy and elastic potential energy. Alternating reciprocating conversions are externally expressed as vibration.
  • the vibrator 50 is obtained with different vibration accelerations (vibration amounts) by setting the weight of the weight 40.
  • vibration accelerations vibration amounts
  • the vibrator 50 can also have a wider range of vibration acceleration (vibration amount), which can meet the tactile feedback requirements of different use conditions or different products, and expand the use range.
  • the magnet 20, the shield 21, the weight 40, and the connector 30 are riveted in order from bottom to top.
  • it can also be integrally formed, welded, etc., and is not limited herein.
  • the substrate 11 includes a current conversion circuit (not shown).
  • the current conversion circuit can convert the input alternating current or direct current into a pulsating direct current of a set frequency and output it to the coil 12.
  • the set frequency may be 150 Hz to 250 Hz. It should be noted that the set frequency is related to the inherent mechanical frequency of the elastic piece 70. To maintain the vibration frequency of the vibrator and the frequency of the electromagnetic force of the coil 12, the technician can adjust the set frequency after the material of the elastic piece 70 is determined. The specified resonant frequency can also be obtained by adjusting the width of the elastic piece 70, which will not be described in detail herein.
  • the vibrator further includes an outer frame formed by the upper cover 90 and the lower cover 91.
  • the substrate 11 is fixed on the lower cover 91; the upper cover 90 is engaged with the lower cover 91 to form a space for accommodating the substrate 11, the coil 12, the magnet 20, the shield cover 21, the connecting body 30, the support body 60, the elastic piece 70 and the buffer Body 80.
  • the stator and the vibrator can be protected by providing the outer frame body, thereby improving the operational reliability of the vibrator.
  • the vibrator further includes a vibration buffer body 81; the vibration buffer body 81 is disposed between the connecting body 30 and the substrate 11.
  • the vibration force generated by the vibrator 50 can be equalized by the buffer body 81 to prevent the vibration force from being excessively generated.
  • the magnet 20 and the shield 21 may constitute a magnetic field, and when the coil 12 is energized, the electromagnetic force generated by the coil 12 attracts or repels the magnet 20, thereby causing the vibrator 50 produces a linear motion away from or near the coil 12 along the axis of the coil 12.
  • the coil 12 is connected with a rectangular wave pulse direct current, the power supply pulse frequency will form a resonance when it coincides with the natural oscillation frequency of the mechanical vibration unit. At this time, the vibrator exhibits a sense of vibration externally and achieves the effect of tactile feedback.
  • the coil 12 can pass either a unidirectional rectangular wave pulse direct current or a bidirectional positive and negative rectangular wave pulse current.
  • the vibration buffer body 81 can buffer the vibration generated by the vibrator 50, thereby effectively absorbing the vibration strength of the vibrator 50 and protecting the elastic piece 70 from damage.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

一种微型线性振动器，包括基板（11）、线圈（12）、磁体（20）、屏蔽罩（21）、连接体（30）、配重块（40）、支撑体（60）及弹片（70），其线圈（12）的一端焊接于基板（11）上以将线圈（12）固定于基板进而构成定子（10）；而磁体（20）、屏蔽罩（21）、配重块（40）和连接体（30）则从下到上依次相互连接构成振子（50），连接体（30）与支撑体（60）之间连接有弹片（70），振子（50）与支撑体（60）构成具有固有振荡频率的机械振动单元。采用线性马达原理，解决了使用寿命问题，延长微型振动器的使用寿命；采用共振技术，实现了快速启动，解决了响应延迟问题。

Description

微型线性振动器
交叉引用
本申请引用于2017年7月13日提交的专利名称为“微型线性振动器”的第201720845484.9号中国专利申请，其通过引用被全部并入本申请。
技术领域
本发明涉及振动器领域，尤指一种通过振子与支撑体构成具有固有振荡频率的微型线性振动器。
背景技术
传统的用于触觉反馈的微型振动器大都采用直流马达带动偏心轮旋转产生的振动来实现；由于直流马达采用电刷换向，其寿命受电刷的限制，很难突破200小时。
然而，虽现今已有微型无刷马达振动器可解决寿命的问题，但由于启动时间偏长响应速度偏慢，且存在反馈延迟的现象，故其应用受到限制。
发明内容
(一)解决的技术问题
针对现有技术的不足，本发明提供一种微型线性振动器，解决了现有振动器使用寿命短，启动时间偏长响应速度偏慢，且存在反馈延迟的现象。用于游戏机手柄或其他掌上型设备以提供触觉反馈。
(二)技术方案
该微型线性振动器包括：基板、线圈、磁体、屏蔽罩、配重块、连接体、支撑体和弹片；
所述线圈的一端固定在所述基板上，并且所述线圈和所述基板构成所述振动器的定子；所述线圈在通电时产生电磁力；
所述磁体设置在所述线圈的上方，远离所述线圈的一面固定在所述屏蔽罩内部；
所述连接体靠近所述配重块的一面固定有所述配重块，所述屏蔽罩固定在所述配重块上，并且所述连接体容纳所述配重块、所述磁体和所述屏蔽罩于内部；所述连接体、所述配重块、所述屏幕罩和所述磁体构成所述振动器的振子；
所述支撑体固定在所述基板上，且所述线圈、所述磁体、所述屏蔽罩、所述配重块和所述连接体位于所述支撑体和所述基板形成的空间内；
所述弹片的一端固定在所述支撑体上，另一端固定在所述连接体上；
在所述线圈的电磁力和所述磁体自身磁力的作用下，所述振子沿着所述线圈轴线做靠近或者远离所述线圈的线性运动。
可选地，所述弹片上设有开孔；所述振动器还包括：缓冲体；
所述缓冲体的一端固定在所述支撑体上，另一端固定在所述连接体上；并且所述缓冲体位于其中所述弹片的开孔内。
可选地，所述屏蔽罩远离所述磁体的一面设置有凹陷部，所述凹陷部环绕于所述屏蔽罩的外部，用于约束所述磁体，以使所述磁体居于所述屏蔽罩的中心。
可选地，所述连接体内至少设有一个配重块，所述配重块设置在所述屏蔽罩和所述连接体之间。
可选地，所述磁体、所述屏蔽罩、配重块和所述连接体从下到上依次铆接。
可选地，所述线圈焊接、粘贴或者绑定在所述基板上。
可选地，所述基板包括电流变换电路，所述电流变换电路用于输出设定频率的脉动直流电。
可选地，所述设定频率为150Hz～250Hz。
可选地，还包括上盖和下盖构成的外框体；所述基板固定在所述下盖上；所述上盖与所述下盖卡接后形成空间可容纳所述基板、所述线圈、所述磁体、所述屏蔽罩、所述连接体、所述支撑体和弹片。
可选地，还包括振动缓冲体；所述振动缓冲体设置在所述连接体和所述基板之间。
(三)有益效果
本发明实施例中将线圈固定在基板上，使该线圈和基板构成振动器的定子；然后将依次固定的磁体、屏蔽罩、配重块和连接体作为振动器的振子；在线圈通电时产生电磁力和磁体的磁力相互作用，使振子沿着线圈轴线做靠近或者远离所述线圈的线性运动，该振动器可以看作一个线性马达。振子与定子之间没有电刷即没有摩擦，可以延长该振动器的使用寿命。另外，通过调整输入线圈中电流的频率，可以振子与弹片的振荡频率一致形成共振，从而实现振动器的快速启动，从而获取较快的响应速度，降低响应延迟时间。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种微型线性振动器的立体图；
图2为本发明实施例提供的一种微型线性振动器的结构示意图；
图3为本发明实施例提供的一种微型线性振动器的结构爆炸图；
图4为本发明实施例提供的一种微型线性振动器的振动状态示意图；
图5为本发明实施例提供的一种微型线性振动器的振动缓冲体实施例图。
其中10定子、11基板、12线圈、20磁体、21屏蔽罩、211凹陷部、30连接体、40配重块、50振子、60支撑体、70弹片、71开孔、80缓冲体、81振动缓冲体、90上盖、91下盖。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描 述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，本发明实施例中微型线性振动器中，一个线圈、一个磁体、一个弹片可以构成一个振动单元；在后续实施例中，该振动单元中还可以包括一个缓冲体。在具体场景中，微型线性振动器还可以包括多个振动单元，即包括多个线圈、多个磁体、多个弹片，以及多个缓冲体。可理解的是，多个振动单元组合使用时，需要保证每个振动单元的工作频率相同和相位同步，振动量才会产生叠加。为保持同步振动，可以将各线圈串连后由同一电源供电，使各线圈获得相同的驱动电流。另外技术人员还可以根据其他同步技术实现，在此不再详述。为简化说明，后续各实施例中采用2个振动单元进行说明。
参见图1至图5，本发明实施例提供一种微型线性振动器，其包括：
基板11、线圈12、磁体20、屏蔽罩21、连接体30、配重块40、支撑体60和弹片70；
线圈12的一端固定在基板11上，并且线圈12和基板11构成振动器的定子；线圈12在通电时产生电磁力；
磁体20设置在线圈12的上方，远离线圈12的一面(图1中的上侧面)固定在屏蔽罩21内部居中(图1中的上底面)。屏蔽罩21采用高导磁材料，将磁体20的磁力导入到磁体20和屏蔽罩21之间的空隙，防止磁力泄露至屏蔽罩21外部的空气中，这样可以提高气隙的磁感应强度。最终，提高线圈12通电和磁体20相互吸引或者排斥时的强度，从而提高电能与机械振动能的转化效率。
连接体30靠近屏蔽罩21的一面(图1中的下侧面)固定在配重块40上，并且连接体30容纳磁体20、屏蔽罩21和配重块40于内部；连接体30、配重块40、屏幕罩21和磁体20构成振动器的振子50；
支撑体60固定在基板11上，且线圈12、磁体20、屏蔽罩21、配重块40、弹片70和连接体30位于支撑体60和基板11形成的空间内；
弹片70的一端(图1中上端)固定在支撑体60上，另一端(图1中下端)固定在连接体30上；
在线圈12的电磁力和磁体20自身磁力的作用下，振子沿着线圈12轴线做靠近或者远离线圈12的线性运动。
需要说明的是，在一实施例中，弹片70上设有开孔71。该振动器中还包括一对缓冲体80；每个缓冲体80的一端(图1中上端)固定在支撑体60上，另一端(图1中下端)固定在连接体30上；并且缓冲体80位于弹片70的开孔71内。实际应用中，缓冲体80需要对称使用，因此可以采用两个缓冲体80实现。
需要说明的是，基板11为印刷电路板PCB。当然，基板11还可以包括基底以及设置在该基底上的电路，电路可以采用芯片、分离元件等实现，在此不作限定。
需要说明的是，线圈12固定在基板11上的方式可以为焊接、铆接、粘贴或者绑定。在一实施例中，线圈12焊接在基板11上。
在一实施例中，屏蔽罩21远离磁体20的一面(图2中上面)设置有凹陷部211。该凹陷部211用于约束磁体20，使之居于屏蔽罩21的中心。环绕于屏蔽罩21的外部。当线圈12通电后，线圈12和磁体20相互吸引或者排斥，导致磁体20会同时带动屏蔽罩21、配重块40、连接体30进行同步运动。运动时连接体30对弹片70产生拉伸或压缩，实现动能和弹性势能的转换。交替往复转换则对外表现为振感。
在一实施例中，连接体30内至少设有一个配重块40，配重块40设置在屏蔽罩21和连接体30之间。本实施例中通过设置配重块40的重量使振子50获得不同的振动加速度(振动量)。当振子50的重量较重时，振子50所产生的振动力相对较大，若振子50重量较轻时，振子50所产生之振动力则会相对较小。这样，可以使振动器具有更好的振动效果，提高触觉反馈体验。另外，本实施例中振动器还可以具有更宽振动加速度(振动量)的选择范围，能够满足不同使用条件下或者不同产品的触觉反馈需求，扩展使用范围。
在一实施例中，磁体20、屏蔽罩21、配重块40和连接体30从下到上依次铆接。当然，还可以一体成型、焊接等方式，在此不作限定。
在一实施例中，基板11包括电流变换电路(图中未示出)。电流变换电路可以将输入的交流电或者直接电转换成设定频率的脉动直流电并输出给线圈12。本实施例中，设定频率可以为150Hz～250Hz。需要说明的是，该设定频率与弹片70的固有机械频率相关，为保持振子的振动频率和线圈12电磁力的频率相一致，技术人员可以在弹片70的材料确定后调整上述设定频率，也可以通过调整弹片70的宽度来获得指定的谐振频率，在此不再详述。
在一实施例中，振动器还包括上盖90和下盖91构成的外框体。其中，基板11固定在下盖91上；上盖90与下盖91卡接后形成空间可容纳基板11、线圈12、磁体20、屏蔽罩21、连接体30、支撑体60、弹片70和至缓冲体80。本实施例中，通过设置外框体可以保护定子和振子，提高振动器工作可靠性。
在一实施例中，振动器还包括振动缓冲体81；所述振动缓冲体81设置在连接体30和基板11之间。通过缓冲体81能够均衡振子50所产生的振动力，以避免振动力过大情形发生。
具体实施过程中,当线圈12通有150Hz～250Hz的电流时，上述磁体20和屏蔽罩21会构成磁场，而当线圈12通电时，线圈12产生的电磁力吸引或排斥磁体20，进而使得振子50沿着线圈12轴线产生远离或靠近线圈12的线性运动。若线圈12通有矩形波脉冲直流电，其供电脉冲频率与机械振动单元的固有振荡频率一致时会形成共振，此时振动器对外表现振感，达到触觉反馈的效果。线圈12既可通单向矩形波脉冲直流电，也可通双向正负矩形波脉冲电流电。其中，若线圈12通双向矩形波正负脉冲电流电时，则会比线圈12通单向矩形波脉冲直流电时可获得更强的振感。在振子50的振动力过大时，振动缓冲体81能够缓冲振子50所产生的振动，从而有效缓冲振子50的振动强度，保护弹片70不被损伤。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体 意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (10)

  1. 一种微型线性振动器，其特征在于，包括：基板、线圈、磁体、屏蔽罩、连接体、配重块、支撑体和弹片；
    所述线圈的一端固定在所述基板上，并且所述线圈和所述基板构成所述振动器的定子；所述线圈在通电时产生电磁力；
    所述磁体设置在所述线圈的上方，远离所述线圈的一面固定在所述屏蔽罩内部；
    所述连接体靠近所述配重块的一面固定有所述配重块，所述屏蔽罩固定在所述配重块上，并且所述连接体容纳所述配重块、所述磁体和所述屏蔽罩于内部；所述连接体、所述配重块、所述屏幕罩和所述磁体构成所述振动器的振子；
    所述支撑体固定在所述基板上，且所述线圈、所述磁体、所述屏蔽罩、所述配重块和所述连接体位于所述支撑体和所述基板形成的空间内；
    所述弹片的一端固定在所述支撑体上，另一端固定在所述连接体上；
    在所述线圈的电磁力和所述磁体自身磁力的作用下，所述振子沿着所述线圈轴线做靠近或者远离所述线圈的线性运动。
  2. 根据权利要求1所述的微型线性振动器，其特征在于，所述弹片上设有开孔；所述振动器还包括：缓冲体；
    所述缓冲体的一端固定在所述支撑体上，另一端固定在所述连接体上；并且所述缓冲体位于其中所述弹片的开孔内。
  3. 根据权利要求1所述的微型线性振动器，其特征在于，所述屏蔽罩远离所述磁体的一面设置有凹陷部，所述凹陷部环绕于所述屏蔽罩的外部，用于约束所述磁体，以使所述磁体居于所述屏蔽罩的中心。
  4. 根据权利要求1所述的微型线性振动器，其特征在于，所述连接体内至少设有一个配重块，所述配重块设置在所述屏蔽罩和所述连接体之间。
  5. 根据权利要求4所述的微型线性振动器，其特征在于，所述磁体、所述屏蔽罩、配重块和所述连接体从下到上依次铆接。
  6. 根据权利要求1所述的微型线性振动器，其特征在于，所述线圈焊接、粘贴或者绑定在所述基板上。
  7. 根据权利要求1所述的微型线性振动器，其特征在于，所述基板包括电流变换电路，所述电流变换电路用于输出设定频率的脉动直流电。
  8. 根据权利要求7所述的微型线性振动器，其特征在于，所述设定频率为150Hz～250Hz。
  9. 根据权利要求1所述的微型线性振动器，其特征在于，还包括上盖和下盖构成的外框体；所述基板固定在所述下盖上；所述上盖与所述下盖卡接后形成空间可容纳所述基板、所述线圈、所述磁体、所述屏蔽罩、所述连接体、所述支撑体和弹片。
  10. 根据权利要求1所述的微型线性振动器，其特征在于，还包括振动缓冲体；所述振动缓冲体设置在所述连接体和所述基板之间。
PCT/CN2018/075155 2017-07-13 2018-02-02 微型线性振动器 WO2019010966A1 (zh)

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CN206908496U (zh) * 2017-07-13 2018-01-19 池州市弘港科技电子有限公司 微型线性振动器
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