WO2021259078A1 - 一种快速响应的线性振动马达结构及其实现方法 - Google Patents

一种快速响应的线性振动马达结构及其实现方法 Download PDF

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WO2021259078A1
WO2021259078A1 PCT/CN2021/099633 CN2021099633W WO2021259078A1 WO 2021259078 A1 WO2021259078 A1 WO 2021259078A1 CN 2021099633 W CN2021099633 W CN 2021099633W WO 2021259078 A1 WO2021259078 A1 WO 2021259078A1
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mass
linear vibration
vibration motor
motor
vibrator assembly
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PCT/CN2021/099633
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English (en)
French (fr)
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严新江
周杨栋
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浙江省东阳市东磁诚基电子有限公司
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Priority to US18/003,320 priority Critical patent/US20230253868A1/en
Publication of WO2021259078A1 publication Critical patent/WO2021259078A1/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
    • H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations

Definitions

  • the invention belongs to the technical field of vibration motors, and specifically relates to a linear vibration motor structure with rapid response and a realization method thereof.
  • Micro-vibration motors are indispensable components for electronic products such as mobile phones, tablet computers, and electronic toys, which provide users with tactile feedback. With the intensification of competition in the smartphone market, mobile phone manufacturers pay more and more attention to the user's tactile experience.
  • mobile consumer electronic products on the market generally use vibration motors as system feedback components, such as mobile phone call notifications and game console vibrations. Feedback and more.
  • vibration motors usually only the interaction between the coil and the magnetic steel is used to provide the driving force for the motor to drive the motor to reciprocate, but the driving force of the motor using this driving method is relatively small, so the response time of the motor is longer. Therefore, it is necessary to design a fast response linear vibration motor.
  • This patent provides a fast response linear vibration motor structure, which is simple in structure, convenient to manufacture, and has a faster response time.
  • the purpose of the present invention is to provide a fast response linear vibration motor structure to solve the above-mentioned problems in the background art.
  • the structure of a linear vibration motor with quick response provided by the present invention has the characteristics of simple structure, convenient manufacture, and quick response effect.
  • Another object of the present invention is to provide a method for realizing the structure of a linear vibration motor with fast response.
  • a fast response linear vibration motor structure including a lower bracket, the upper part of the lower bracket is connected with an FPC, the upper part of the FPC is provided with a stator assembly, and the stator assembly is sheathed outside There is a vibrator assembly.
  • the outer part of the vibrator assembly is covered with a casing.
  • the casing is connected to the upper part of the lower bracket.
  • the vibrator assembly and the casing are connected by spring sheets.
  • the stator assembly includes an iron core on which two sets of coils are wound.
  • the coil and the FPC are electrically connected
  • the vibrator assembly includes a magnetic steel group and a second mass block, wherein the magnetic steel group is embedded and arranged inside the second mass block.
  • the magnetic steel group includes four magnetic steels, and the four magnetic steels are arranged side by side on both sides of the inner long side of the second mass block.
  • the vibrator assembly further includes two first masses, and the two first masses are respectively located above the two sides of the inner long side of the second mass.
  • a gasket is connected above the second mass block.
  • the two sides of the inner short side of the second mass are respectively connected with foam.
  • the two opposite sides of the connecting arm of the spring plate are respectively connected to the baffle plate.
  • a cavity for accommodating the stator assembly is further provided inside the second mass block.
  • the realization method of the fast response linear vibration motor structure includes the following steps:
  • the casing and the lower bracket form a closed cavity, which accommodates the internal vibrator assembly and stator assembly;
  • the vibrator assembly includes a second mass block, a magnetic steel group and a first mass block, and the magnetic steel group provides a magnetic field for the motor drive;
  • the stator assembly includes a coil, FPC and iron core.
  • the coil and FPC form a circuit, which forms a magnetic field when energized.
  • the magnetic field generated by the energization interacts with the eternal magnetic field generated by the magnet group to drive the motor to vibrate;
  • the spring plate connects the casing and the vibrator assembly to provide elastic force for movement and make the vibrator assembly reciprocate.
  • the magnetic steel group includes four magnetic steels, and the four magnetic steels are arranged side by side on both sides of the inner long side of the second mass block.
  • the vibrator assembly also includes two first masses, the two first masses are respectively located above the two sides of the inner long side of the second mass, a gasket is connected above the second mass, and the inner short side of the second mass Foams are respectively connected on both sides of the spring plate, the opposite sides of the connecting arm of the spring plate are respectively connected with baffles, the iron core is a magnetic conductive member, and the second mass is provided with a cavity for accommodating the stator assembly.
  • the present invention is provided with two sets of coils. After the two sets of coils are energized, the iron core can generate a stronger magnetic field, thereby increasing the driving force of the motor and increasing the vibration feeling of the motor;
  • magnets are provided in the present invention to increase the strength of the magnetic field generated by the magnets, thereby increasing the driving force of the motor and increasing the vibration feeling of the motor;
  • the first mass is added on the basis of the second mass, thereby increasing the overall mass of the mass, so that the motor can produce a stronger vibration feeling when it vibrates;
  • the iron core of the present invention is made of ferritic stainless steel. When the power is cut off, the eddy current effect of the iron core makes the motor have electromagnetic damping effect, so that the motor can stop faster, and the motor has a faster Response time;
  • the two sides of the inner short side of the second mass block are respectively bonded with foam by glue, and the displacement of the motor during movement is restricted by the foam, so as to prevent the product from hard collision and generate noise.
  • Figure 1 is an exploded schematic diagram of the structure of the present invention
  • FIGS. 2 and 3 are schematic cross-sectional structural diagrams of the present invention.
  • Figure 4 is a schematic diagram of the electromagnetic drive structure of the present invention.
  • a fast-response linear vibration motor structure including a lower bracket 9, an FPC8 is connected above the lower bracket 9, and a stator assembly is arranged above the FPC8.
  • the stator assembly The outer part of the vibrator is sheathed with a vibrator assembly, the outer part of the vibrator assembly is sheathed with a casing 1, and the casing 1 is connected above the lower bracket 9, and the vibrator assembly and the casing 1 are connected by a spring sheet 6, and the stator assembly includes an iron core 10 , Two sets of coils 7 are wound on the iron core 10, and the coil 7 is electrically connected to the FPC 8.
  • the vibrator assembly includes a magnetic steel group and a second mass 5, wherein the magnetic steel group is embedded in the second mass 5 internal.
  • the magnetic steel group includes four magnetic steels 4, and the four magnetic steels 4 are glued on both sides of the inner long side of the second mass 5 side by side.
  • the magnetic steel 4 is used to provide a magnetic field for the motor drive.
  • the two opposite sides of the connecting arm of the spring sheet 6 are respectively connected with a blocking sheet 61.
  • the iron core 10 is a magnetically conductive member, and in this embodiment, the iron core 10 is made of ferritic stainless steel.
  • the second mass 5 is provided with a cavity for accommodating the stator assembly.
  • the vibrator assembly further includes two first masses 3, and the two first masses 3 are respectively located above the two sides of the inner long side of the second mass 5.
  • the mass of the masses is increased by the two first masses 3, thereby ensuring a stronger vibration feeling of the motor.
  • a gasket 2 is welded on the upper part of the second mass 5 by laser welding.
  • the gasket 2 serves as the supporting surface for the assembly of the first mass 3.
  • the displacement of the motor during movement is restricted by the foam 11 to prevent the product from generating noise due to rigid collision.
  • the implementation method of the fast response linear vibration motor structure of the present invention includes the following steps:
  • the casing 1 and the lower bracket 9 form a closed cavity, which contains the vibrator assembly and the stator assembly inside;
  • the vibrator assembly includes a second mass block 5, a magnetic steel group and a first mass block 3.
  • the magnetic steel group provides a magnetic field for the motor drive;
  • the stator assembly includes coil 7, FPC8 and iron core 10.
  • the coil 7 and FPC8 form a circuit, which forms a magnetic field when energized, and the magnetic field generated by the energization interacts with the eternal magnetic field generated by the magnet group to drive the motor to vibrate;
  • the spring sheet 6 connects the casing 1 and the vibrator assembly to provide elastic force for movement, so that the vibrator assembly reciprocates in the horizontal direction.
  • the present invention is provided with two sets of coils 7, and the two sets of coils 7 are energized to cooperate with the iron core to generate a stronger magnetic field, thereby increasing the driving force of the motor and increasing the vibration feeling of the motor;
  • the present invention provides four A magnet 4 increases the strength of the magnetic field generated by the magnet 4, thereby increasing the driving force of the motor and increasing the vibration feeling of the motor;
  • the present invention adds the first mass on the basis of the second mass 5 3, thereby increasing the overall mass of the mass, so that the motor can produce stronger vibration when vibrating;
  • the iron core 10 of the present invention is made of ferritic stainless steel.
  • the motor has the effect of electromagnetic damping, so that the motor can stop faster, so that the motor has a faster response time; in the present invention, the two sides of the inner short side of the second mass 5 are respectively bonded with bubbles by glue. Cotton 11, through the foam 11 to limit the displacement of the motor during movement, to prevent the product from rigid collision and produce noise.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

本发明公开了一种快速响应的线性振动马达结构，包括下托架，下托架的上方连接有FPC，FPC的上方设有定子组件，定子组件的外部套设有振子组件，振子组件的外部套设有机壳，机壳连接在下托架的上方，振子组件与机壳之间通过弹簧片连接，铁芯上绕制有两组线圈，线圈与FPC之间电性连接，振子组件包括磁钢组和第二质量块，其中，磁钢组嵌入设置在第二质量块的内部；本发明还公开了一种快速响应的线性振动马达结构的实现方法。本发明设置了两组线圈，两组线圈通电后配合铁芯可以产生更强的磁场，从而增加了马达的驱动力，增加了马达的振感；本发明设置了四个磁钢，增大了磁钢产生的磁场的强度，从而增加了马达的驱动力，增加了马达的振感。

Description

一种快速响应的线性振动马达结构及其实现方法 技术领域
本发明属于振动马达技术领域，具体涉及一种快速响应的线性振动马达结构及其实现方法。
背景技术
微型振动马达是手机、平板电脑、电子玩具等电子产品不可缺少的元器件，其为用户提供触觉反馈。随着智能手机市场的竞争加剧，手机厂家对用户触觉体验越来越关注，目前市场上的移动消费电子产品，一般都会用到振动电机作为系统反馈部件，比如手机的来电提示，游戏机的振动反馈等等。在振动电机的相关专利中，通常仅仅采用线圈和磁钢相互作用为电机提供驱动力，以驱动电机往复运动，但是采用该驱动方式的电机驱动力较小，因此导致电机的响应时间较长，所以有必要设计一款快速响应的线性振动马达，本专利提供种快速响应的线性振动马达结构，其结构简单、制造方便，并且有较快的响应时间。
发明内容
本发明的目的在于提供一种快速响应的线性振动马达结构，以解决上述背景技术中提出的问题。本发明提供的一种快速响应的线性振动马达结构，具有结构简单、制造方便，具有快速响应效果的特点。
本发明另一目的在于提供一种快速响应的线性振动马达结构的实现方法。
为实现上述目的，本发明提供如下技术方案：一种快速响应的线性振动马达结构，包括下托架，下托架的上方连接有FPC，FPC的上方设有定子组件，定子组件的外部套设有振子组件，振子组件的外部套设有机壳，机壳连接在下托架的上方，振子组件与机壳之间通过弹簧片连接，定子组件包括铁芯，铁芯上绕制有两组线圈，线圈与FPC之间电性连接，振子组件包括磁钢组和 第二质量块，其中，磁钢组嵌入设置在第二质量块的内部。
在本发明中进一步地，磁钢组包括四个磁钢，四个磁钢两两并列的设置在第二质量块内部长边的两侧。
在本发明中进一步地，振子组件还包括两个第一质量块，两个第一质量块分别位于第二质量块内部长边两侧的上方。
在本发明中进一步地，第二质量块的上方连接有垫片。
在本发明中进一步地，第二质量块内部短边的两侧分别连接有泡棉。
在本发明中进一步地，弹簧片的连接臂相对的两侧分别连接有挡片。
在本发明中进一步地，铁芯为导磁构件。
在本发明中进一步地，第二质量块的内部设有用于容纳定子组件的空腔。
在本发明中进一步地，所述的快速响应的线性振动马达结构的实现方法，包括以下步骤：
(一)、机壳和下托架组成封闭的容腔，收容内部的振子组件和定子组件；
(二)、振子组件包括第二质量块、磁钢组和第一质量块，磁钢组为马达驱动提供磁场；
(三)、定子组件包括线圈、FPC和铁芯，线圈和FPC构成电路，通电时形成磁场，通电产生的磁场和磁钢组产生的永恒磁场相互作用，驱动马达振动；
(四)、弹簧片连接机壳与振子组件，为运动提供弹力，使振子组件往复运动。
在本发明中进一步地，所述的快速响应的线性振动马达结构的实现方法，磁钢组包括四个磁钢，四个磁钢两两并列的设置在第二质量块内部长边的两侧，振子组件还包括两个第一质量块，两个第一质量块分别位于第二质量块内部长边两侧的上方，第二质量块的上方连接有垫片，第二质量块内部短边 的两侧分别连接有泡棉，弹簧片的连接臂相对的两侧分别连接有挡片，铁芯为导磁构件，第二质量块的内部设有用于容纳定子组件的空腔。
与现有技术相比，本发明的有益效果是：
1、本发明设置了两组线圈，两组线圈通电后配合铁芯可以产生更强的磁场，从而增加了马达的驱动力，增加了马达的振感；
2、本发明设置了四个磁钢，增大了磁钢产生的磁场的强度，从而增加了马达的驱动力，增加了马达的振感；
3、本发明在第二质量块的基础上，增加了第一质量块，从而增加了质量块的整体质量，从而可以使马达在振动时产生更强的振感；
4、本发明的铁芯选用铁素体不锈钢材质，在断电的时候，由于铁芯的涡流作用，使得马达具有电磁阻尼的效果，从而使马达能够更快的停下来，使得马达具有较快的响应时间；
5、本发明在第二质量块内部短边的两侧分别通过胶水粘接有泡棉，通过泡棉限制马达在运动时候的位移，防止产品硬性碰撞产生噪音。
附图说明
图1为本发明的结构爆炸示意图；
图2和3均为本发明的剖视结构示意图；
图4为本发明的电磁驱动结构示意图；
图中：1、机壳；2、垫片；3、第一质量块；4、磁钢；5、第二质量块；6、弹簧片；61、挡片；7、线圈；8、FPC；9、下托架；10、铁芯；11、泡棉。
具体实施方式
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，所描述的实施例仅仅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做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。
实施例1
请参阅图1-4，本发明提供以下技术方案：一种快速响应的线性振动马达结构，包括下托架9，下托架9的上方连接有FPC8，FPC8的上方设有定子组件，定子组件的外部套设有振子组件，振子组件的外部套设有机壳1，机壳1连接在下托架9的上方，振子组件与机壳1之间通过弹簧片6连接，定子组件包括铁芯10，铁芯10上绕制有两组线圈7，线圈7与FPC8之间电性连接，振子组件包括磁钢组和第二质量块5，其中，磁钢组嵌入设置在第二质量块5的内部。
进一步地，磁钢组包括四个磁钢4，四个磁钢4两两并列的通过胶水粘接在在第二质量块5内部长边的两侧。
通过采用上述技术方案，通过磁钢4为马达驱动提供磁场。
进一步地，弹簧片6的连接臂相对的两侧分别连接有挡片61。
进一步地，铁芯10为导磁构件，本实施例中铁芯10选用铁素体不锈钢材质。
进一步地，第二质量块5的内部设有用于容纳定子组件的空腔。
实施例2
本实施例与实施例1不同之处在于：进一步地，振子组件还包括两个第一质量块3，两个第一质量块3分别位于第二质量块5内部长边两侧的上方。
通过采用上述技术方案，通过两个第一质量块3增加质量块的质量，从而确保马达的振感更强。
进一步地，第二质量块5的上方通过激光焊接有垫片2。
通过采用上述技术方案，垫片2作为第一质量块3装配的承托面。
实施例3
本实施例与实施例1不同之处在于：进一步地，第二质量块5内部短边的两侧分别通过胶水粘接有泡棉11。
通过采用上述技术方案，通过泡棉11限制马达在运动时候的位移，防止产品硬性碰撞产生噪音。
进一步地，本发明所述的快速响应的线性振动马达结构的实现方法，包括以下步骤：
(一)、机壳1和下托架9组成封闭的容腔，收容内部的振子组件和定子组件；
(二)、振子组件包括第二质量块5、磁钢组和第一质量块3，磁钢组为马达驱动提供磁场；
(三)、定子组件包括线圈7、FPC8和铁芯10，线圈7和FPC8构成电路，通电时形成磁场，通电产生的磁场和磁钢组产生的永恒磁场相互作用，驱动马达振动；
(四)、弹簧片6连接机壳1与振子组件，为运动提供弹力，使振子组件沿水平方向往复运动。
综上所述，本发明设置了两组线圈7，两组线圈7通电后配合铁芯可以产生更强的磁场，从而增加了马达的驱动力，增加了马达的振感；本发明设置了四个磁钢4，增大了磁钢4产生的磁场的强度，从而增加了马达的驱动力，增加了马达的振感；本发明在第二质量块5的基础上，增加了第一质量块3，从而增加了质量块的整体质量，从而可以使马达在振动时产生更强的振感；本发明的铁芯10选用铁素体不锈钢材质，在断电的时候，由于铁芯10的涡流作用，使得马达具有电磁阻尼的效果，从而使马达能够更快的停下来，使得马达具有较快的响应时间；本发明在第二质量块5内部短边的两侧分别通过胶水粘接有泡棉11，通过泡棉11限制马达在运动时候的位移，防止产品硬性碰撞产生噪音。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行 多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。

Claims (10)

  1. 一种快速响应的线性振动马达结构，包括下托架(9)，其特征在于：下托架(9)的上方连接有FPC(8)，FPC(8)的上方设有定子组件，定子组件的外部套设有振子组件，振子组件的外部套设有机壳(1)，机壳(1)连接在下托架(9)的上方，振子组件与机壳(1)之间通过弹簧片(6)连接，定子组件包括铁芯(10)，铁芯(10)上绕制有两组线圈(7)，线圈(7)与FPC(8)之间电性连接，振子组件包括磁钢组和第二质量块(5)，其中，磁钢组嵌入设置在第二质量块(5)的内部。
  2. 根据权利要求1所述的一种快速响应的线性振动马达结构，其特征在于：磁钢组包括四个磁钢(4)，四个磁钢(4)两两并列的设置在第二质量块(5)内部长边的两侧。
  3. 根据权利要求1所述的一种快速响应的线性振动马达结构，其特征在于：振子组件还包括两个第一质量块(3)，两个第一质量块(3)分别位于第二质量块(5)内部长边两侧的上方。
  4. 根据权利要求1所述的一种快速响应的线性振动马达结构，其特征在于：第二质量块(5)的上方连接有垫片(2)。
  5. 根据权利要求1所述的一种快速响应的线性振动马达结构，其特征在于：第二质量块(5)内部短边的两侧分别连接有泡棉(11)。
  6. 根据权利要求1所述的一种快速响应的线性振动马达结构，其特征在于：弹簧片(6)的连接臂相对的两侧分别连接有挡片(61)。
  7. 根据权利要求1所述的一种快速响应的线性振动马达结构，其特征在于：铁芯(10)为导磁构件。
  8. 根据权利要求1所述的一种快速响应的线性振动马达结构，其特征在于：第二质量块(5)的内部设有用于容纳定子组件的空腔。
  9. 根据权利要求1-8任一项所述的快速响应的线性振动马达结构的实现方法，其特征在于，包括以下步骤：
    (一)、机壳(1)和下托架(9)组成封闭的容腔，收容内部的振子组件和定子组件；
    (二)、振子组件包括第二质量块(5)、磁钢组和第一质量块(3)，磁钢组为马达驱动提供磁场；
    (三)、定子组件包括线圈(7)、FPC(8)和铁芯(10)，线圈(7)和FPC(8)构成电路，通电时形成磁场，通电产生的磁场和磁钢组产生的永恒磁场相互作用，驱动马达振动；
    (四)、弹簧片(6)连接机壳(1)与振子组件，为运动提供弹力，使振子组件往复运动。
  10. 根据权利要求9所述的快速响应的线性振动马达结构的实现方法，其特征在于：磁钢组包括四个磁钢(4)，四个磁钢(4)两两并列的设置在第二质量块(5)内部长边的两侧，振子组件还包括两个第一质量块(3)，两个第一质量块(3)分别位于第二质量块(5)内部长边两侧的上方，第二质量块(5)的上方连接有垫片(2)，第二质量块(5)内部短边的两侧分别连接有泡棉(11)，弹簧片(6)的连接臂相对的两侧分别连接有挡片(61)，铁芯(10)为导磁构件，第二质量块(5)的内部设有用于容纳定子组件的空腔。
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