WO2010057409A1 - 微型电磁震动器 - Google Patents

微型电磁震动器 Download PDF

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Publication number
WO2010057409A1
WO2010057409A1 PCT/CN2009/074630 CN2009074630W WO2010057409A1 WO 2010057409 A1 WO2010057409 A1 WO 2010057409A1 CN 2009074630 W CN2009074630 W CN 2009074630W WO 2010057409 A1 WO2010057409 A1 WO 2010057409A1
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WO
WIPO (PCT)
Prior art keywords
vibrating body
electromagnetic vibrator
iron core
outer casing
magnetic steel
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Application number
PCT/CN2009/074630
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English (en)
French (fr)
Inventor
陆勤
高宜杭
Original Assignee
浙江陆发微电机有限公司
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Application filed by 浙江陆发微电机有限公司 filed Critical 浙江陆发微电机有限公司
Publication of WO2010057409A1 publication Critical patent/WO2010057409A1/zh

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Classifications

    • 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

Definitions

  • the present invention relates to a vibrator, and more particularly to a miniature electromagnetic vibrator for a mobile phone, a game machine or an electric massage appliance or the like.
  • Micro-vibrators are needed in mobile phones as silent signal source components; there are other areas where micro-vibrators are needed, such as game consoles, electric massage appliances, and so on.
  • the micro vibrators currently in use are usually micro-vibration motors.
  • the micro-vibration motors are composed of a motor and an eccentric weight, whether cylindrical or flat. The rotation of the motor drives the eccentric weight to rotate, thus generating vibration.
  • These DC motors are generally equipped with bearings, brushes and commutators, tungsten alloy eccentrics, rotors with eccentric wheels for high-speed unbalanced rotation, which require higher quality materials for bearings, brushes and commutators.
  • the biggest problem with motors with brushes and commutators is that they are prone to wear, have a short life, and have electromagnetic interference that produces commutation sparks.
  • the object of the present invention is to overcome the deficiencies of the prior art and to provide a miniature electromagnetic vibrator which has a simple structure, low material consumption, light weight, low manufacturing cost, long service life, and no commutation spark and electromagnetic interference.
  • a miniature electromagnetic vibrator consisting of a coil disposed in a square casing, an in-line iron core, a crash pad, a magnetic steel, a vibrating body and an elastic device, wherein the in-line iron core, the crash pad and the magnetic steel are disposed Inside the vibrating body, both end faces of the in-line iron core are respectively connected to the crash pad and face one side of the magnetic steel, and the other side of the magnetic steel is embedded in the vibrating body;
  • the core has one or more cores, and a coil is wound around the iron core. The two ends of the coil lead wires are connected to an external power source.
  • the vibration body is substantially filled with a square outer casing, and the vibration body is connected to the outer casing through an elastic device.
  • the inline iron core may be one, slightly larger, located in the lower part of the vibrating body; or may be located in the middle of the vibrating body; or may be two smaller ones, respectively It is located in the upper part and the lower part of the vibrating body; it can also be a small number of small ones, evenly distributed inside the vibrating body, and can be set according to the vibration force required by the product.
  • micro electromagnetic vibrator of the present invention wherein the magnetic steel can be embedded in the groove of the vibrating body by bonding.
  • the elastic means may be a rhombic reed which is respectively located on both sides of the vibrating body, and a protruding point of one side of the rhomboid is connected to the middle of the side of the vibrating body, and the other side The protruding point is connected to the inner wall of the square outer casing. It may also be a reed having a curved cross section on both sides of the vibrating body, the upper and lower ends of the curved reed being respectively connected to the side edges of the vibrating body, and the middle end being connected to the inner wall of the square outer casing.
  • a perforated silicone rubber body that fills the gap between the sides of the vibrating body and the square outer casing. It mainly serves to transmit vibration to the outer casing, specifically According to the size and model of the product and the difficulty of processing, there are many implementation methods.
  • connection method mentioned may be a conventional connection method such as bonding or welding or riveting.
  • an alternating current of a certain voltage and frequency is applied to both ends of the coil through the wires led from both ends of the coil, so that a magnetic field is generated at both ends of the ingot core, and a magnetic steel is generated between the opposite magnets.
  • the thrust and the pulling force of the same pole repulsive and the opposite pole attracting, so that under the action of the magnetic field, the magnetic steel drives the vibrating body to move horizontally according to the position shown in the figure.
  • the vibrating body can be realized in the left and right direction.
  • the shuttle moves back and forth, and the moving vibrating body transmits the vibration force to the outer casing through the elastic device. The shock is greatest when the vibrating body and the elastic device and the outer casing are co-seismic.
  • the micro electromagnetic vibrator of the invention has the following advantages and technical effects - 1.
  • the micro electromagnetic vibrator of the invention has good controllability, and when alternating currents of different voltages and frequencies are applied at both ends of the coil, when the frequency and voltage are changed, It is easy to obtain different forms of shock to meet the different needs of various earthquakes.
  • micro electromagnetic vibrator of the invention overcomes the defects such as easy wear of the brush and the commutator motor, short life, electromagnetic interference caused by spark during commutation.
  • the micro electromagnetic vibrator of the invention has the advantages of simple structure, light weight, low manufacturing cost, long service life and no spark electromagnetic interference.
  • the micro electromagnetic vibrator of the present invention has the largest effective force because the force generated by the magnetic field is not decomposed; and because the design of the inline core minimizes the volume of the core and maximizes the volume of the vibrating body, the multi-purpose low can be used.
  • the proportion of iron and copper materials is less than the use of high-specific gravity tungsten precious metal materials, which achieves the goal of reducing material costs.
  • Embodiment 1 is a schematic view of Embodiment 1 of a miniature electromagnetic vibrator of the present invention
  • Figure 2 is a perspective view of the diamond-shaped reed in Figure 1;
  • FIG. 3 is a schematic view of Embodiment 2 of the miniature electromagnetic vibrator of the present invention.
  • Figure 4 is a perspective view of the curved reed in Figure 3;
  • Fig. 5 is a schematic view showing a third embodiment of the micro electromagnetic vibrator of the present invention.
  • the micro electromagnetic vibrator in this embodiment is composed of a coil 1, an incore core 2, a crash pad 7, a magnetic steel 3, a vibrating body 4, and a rhombic spring 5 which are disposed in a square outer casing 6.
  • the structure, the in-line iron core 2, the crash pad 7 and the magnetic steel 3 are all disposed inside the vibrating body 4, and the end faces of the in-line iron core 2 are respectively connected to the crash pad 7 and facing the magnetic steel 3
  • the other side of the magnet steel 3 is embedded in the vibrating body 4; the in-line iron core 2 has a lower portion located inside the vibrating body 4, and has a slightly larger volume, and the coil 1 is wound thereon, and can also be inserted in the coil 1.
  • the coil 1 is fixed on the outer casing 6, the lead wires at both ends of the coil 1 are connected to an external power source, the vibrating body 4 is substantially filled with the square outer casing 6, and the vibrating body 4 is connected to the outer casing 6 through the rhombic spring 5, one side of the rhombic spring 5
  • the protruding points are welded to the middle of the side of the vibrating body 4, and the protruding points of the other side are welded to the inner wall of the square casing 6.
  • the square outer casing 6 has a certain thickness and can be divided into two parts. After the above components are loaded, the two parts are welded or riveted together.
  • the micro electromagnetic vibrator in this embodiment is composed of a coil disposed in the square housing 6', a flat core 2', a crash pad 7', a magnetic steel 3', a vibrating body 4', and The curved reed 5' (see Fig.
  • the inline core 2', the crash pad 7' and the magnetic steel 3' are disposed inside the vibrating body 4', and the end faces of the ingot core 2' are respectively connected
  • the crash pad 7' is facing the side of the magnet 3', and the other side of the magnet 3' is embedded in the vibrating body 4';
  • the two-shaped iron core 2' has two upper portions located inside the vibrating body 4' and The lower part is slightly smaller, and has two coils wound thereon.
  • the coil 1' is fixed on the outer casing 6'. The two coils are connected in series (connected at the beginning) and are led out by wires or circuit boards, connected to an external power source, and vibrated.
  • the body 4' is substantially filled with a square outer casing 6', and the vibrating body 4' is connected to the outer casing 6' via a curved reed 5'.
  • the upper and lower ends of the curved reed 5' are respectively welded to the sides of the vibrating body 4'.
  • the end is welded to the inner wall of the square casing 6', and the vibration of the vibrating body 4' transmits the vibration through the curved reed 5' To the outer casing.
  • the micro electromagnetic vibrator in this embodiment is composed of a coil 1", a flat core 2", a crash pad 7", a magnetic steel 3, and a vibrating body 4 which are disposed in a square casing 6".
  • "Strong with silicone rubber body 5", the in-line iron core 2 ⁇ , the crash pad 7 ⁇ and the magnetic steel 3 ⁇ are all disposed inside the vibrating body 4", and the end faces of the in-line iron core 2 ⁇ are respectively connected to the anti-collision
  • the pad 7" is facing the side of the magnetic steel 3 ⁇ , and the other side of the magnetic steel 3 ⁇ is embedded in the vibrating body 4"; the one-piece iron core 2 has a central portion located in the middle of the vibrating body 4 ⁇ , which is slightly larger.
  • the coil 1" is wound on the coil 1", and the coil 1" is fixed on the casing 6 ⁇ .
  • the lead wires of the coil 1" are connected to the external power source, the vibration body 4 ⁇ is substantially filled with the square casing 6", and the vibration body 4 ⁇ is filled with the vibration.
  • a perforated silicone rubber body 5" with a gap between the sides of the body and the square outer casing is connected to the outer casing 6" to transmit vibration to the outside Shell.
  • the micro electromagnetic vibrator of the invention can be widely used as a vibration source for mobile phones, game machines, electric massagers and the like.

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

Description

微型电磁震动器 技术领域
本发明涉及一种震动器， 具体说涉及一种用于手机、 游戏机或电动按摩器具等的微型电 磁震动器。
背景技术
手机中需要用到微型震动器,它作为无声信号源元件；还有一些其他需要用到微型震动器 的领域如： 游戏机、 电动按摩器具等。 目前使用的微型震动器通常都是微型震动马达， 微型 震动马达无论是圆柱形的还是扁平形的都是由马达和偏心配重块组成， 通过马达的旋转带动 偏心配重块转动， 从而产生震动， 而这些直流马达普遍带有轴承， 电刷和换向器， 钨合金偏 心轮，带偏心轮的转子在高速不平衡旋转， 它对轴承， 电刷和换向器的材质要求较高， 带有电 刷和换向器的马达最大的问题是容易磨损， 寿命短， 还有会产生换向火花的电磁干扰。
发明内容
本发明的目的在于克服现有技术上的缺陷， 提供一种结构简单、 耗料少、 重量轻、 制造 成本低、 使用寿命长， 且无换向火花和电磁干扰的微型电磁震动器。
一种微型电磁震动器， 由设置在方形外壳内的线圈、 一字形铁芯、 防撞垫、 磁钢、 震动 体和弹性装置构成， 所述一字形铁芯、 防撞垫和磁钢均设置在震动体内部， 所述一字形铁芯 的两端面分别连接所述防撞垫并正对所述磁钢的一面，所述磁钢的另一面嵌在所述震动体内； 所述一字形铁芯有一个或多个， 铁芯上缠绕有线圈， 线圈的两端引出导线与外部电源相连， 所述震动体基本填满方形外壳， 震动体通过弹性装置与外壳相连。
本发明微型电磁震动器， 所述一字形铁芯可以为一个， 体积稍大， 位于所述震动体内的 下部； 也可以位于所述震动体内的中部； 也可以为体积较小的二个， 分别位于所述震动体内 的上部和下部； 也可以为体积很小的若干个， 均匀分布在震动体的内部， 具体可按照产品所 需的震动力大小来设置。
本发明微型电磁震动器， 其中所述磁钢可以通过粘接方式嵌在震动体的凹槽内。
本发明微型电磁震动器， 其中所述弹性装置可以为分别位于震动体两侧的菱形的簧片， 所述菱形簧片的一边的突出点连接在所述震动体的侧边的中部， 另一边的突出点与所述方形 外壳的内壁连接。 也可以为分别位于震动体两侧的截面为曲线形的簧片， 所述曲线形簧片的 上下两端分别与震动体的侧边连接， 中端与所述方形外壳的内壁连接。 或者为填塞在震动体 两侧与方形外壳之间的空隙的有孔硅橡胶体。 其主要起到将震动传递到外壳的作用， 具体可 按照产品的大小型号以及加工难度等方面来设计， 可以有多种实施方式。
本发明微型电磁震动器， 其中提到的连接方式可以为粘接或焊接或铆接等常规连接方 式。
本发明微型电磁震动器使用时， 通过线圈两端引出的导线， 向线圈的两端施加一定电压 和频率的交流电， 使一字形铁芯两端产生磁场， 与之相对的磁钢之间会产生同极相斥和异极 相吸的推力和拉力，从而在磁场的作用下，磁钢带动震动体按图示位置作水平直线运动，通过 不同变换的交流电， 就可以实现震动体在左右方向的来回往返运动， 运动的震动体通过弹性 装置将震动力传递到外壳。 当震动体和弹性装置及外壳产生共震时震感最大。
本发明微型电磁震动器， 具有以下优点和技术效果- 一.本发明微型电磁震动器其特征可控性好， 当线圈两端施加不同电压和频率的交流电， 在频率和电压等改变时， 很容易获得不同形式的震感， 以满足各种震感的不同需求。
二. 本发明微型电磁震动器， 克服了原先带有电刷和换向器马达的容易磨损， 寿命短， 换向时产生火花的电磁干扰等缺陷。
三. 本发明微型电磁震动器， 结构简单， 重量轻， 制造成本低， 寿命长， 并且无火花的 电磁干扰。
四. 本发明微型电磁震动器， 因为磁场产生的力没有分解，所以有效作用力最大； 并且由 于一字形铁芯的设计,使铁芯体积最小化， 震动体体积最大化， 这样就可以多用低比重的铁、 铜材料少用高比重的钨贵金属材料， 达到了降低材料成本之目的。
附图说明
图 1为本发明微型电磁震动器实施例 1的示意图；
图 2为图 1中菱形簧片的立体图；
图 3为本发明微型电磁震动器实施例 2的示意图；
图 4为图 3中曲线形簧片的立体图；
图 5为本发明微型电磁震动器实施例 3的示意图。
具体实施方式
为进一步说明本发明微型电磁震动器， 结合以下实施例具体阐述：
实施例 1 :
如图 1所示， 本实施例中的微型电磁震动器， 由设置在方形外壳 6内的线圈 1、 一字形 铁芯 2、 防撞垫 7、 磁钢 3、 震动体 4和菱形簧片 5 (见图 2 ) 构成， 一字形铁芯 2、 防撞垫 7 和磁钢 3均设置在震动体 4内部， 一字形铁芯 2的两端面分别连接防撞垫 7并正对磁钢 3的 一面， 磁钢 3的另一面嵌在震动体 4内； 一字形铁芯 2有一个， 位于震动体 4内的下部， 体 积稍大， 上缠绕有线圈 1， 也可插装在线圈 1内， 线圈 1固定在外壳 6上， 线圈 1的两端引 出导线与外部电源相连， 震动体 4基本填满方形外壳 6， 震动体 4通过菱形簧片 5与外壳 6 相连， 菱形簧片 5的一边的突出点焊接在震动体 4的侧边的中部， 另一边的突出点与方形外 壳 6的内壁焊接。
方形的外壳 6有一定的厚度， 其可以分为两部分， 等上述部件装入后， 再将两部分焊接 或铆接起来。
使用时， 通过线圈两端引出的导线， 向线圈的两端施加一定电压和频率的交流电， 使一 字形铁芯两端产生磁场，与之相对的磁钢之间会产生同极相斥和异极相吸的推力和拉力，从而 在磁场的作用下， 磁钢带动震动体按图示位置作水平直线运动， 通过不同变换的交流电， 就 可以实现震动体在左右方向的来回往返运动， 运动的震动体通过弹性装置菱形簧片将震动力 传递到外壳。 当震动体和弹性装置菱形簧片及外壳产生共震时震感最大。
实施例 2:
如图 3所示， 本实施例中的微型电磁震动器， 由设置在方形外壳 6' 内的线圈 、一字 形铁芯 2' 、 防撞垫 7' 、 磁钢 3' 、 震动体 4' 和曲线形簧片 5' (见图 4)构成， 一字形铁 芯 2' 、 防撞垫 7' 和磁钢 3' 均设置在震动体 4' 内部， 一字形铁芯 2' 的两端面分别连接 防撞垫 7' 并正对磁钢 3' 的一面， 磁钢 3' 的另一面嵌在震动体 4' 内； 一字形铁芯 2' 有二个， 分别位于震动体 4' 内的上部和下部， 体积稍小， 上缠绕有两只线圈 ， 线圈 1' 固定在外壳 6' 上， 两只线圈 的两端串联 （起末头相连） 并通过导线或线路板引出， 与外部电源相连， 震动体 4' 基本填满方形外壳 6' ， 震动体 4' 通过曲线形簧片 5' 与外壳 6' 相连， 曲线形簧片 5' 的上下两端分别与震动体 4' 的侧边焊接， 中端与方形外壳 6' 的 内壁焊接，震动体 4' 的震动通过曲线形簧片 5' 将震动传递到外壳。
实施例 3:
如图 5所示， 本实施例中的微型电磁震动器， 由设置在方形外壳 6" 内的线圈 1" 、一字 形铁芯 2〃 、 防撞垫 7" 、 磁钢 3〃 、 震动体 4"和硅橡胶体 5"构成， 一字形铁芯 2〃 、 防撞 垫 7〃和磁钢 3〃均设置在震动体 4" 内部， 一字形铁芯 2〃 的两端面分别连接所述防撞垫 7"并正对磁钢 3〃 的一面， 磁钢 3〃 的另一面嵌在震动体 4" 内； 一字形铁芯 2〃有一个， 位 于震动体 4〃 内的中部， 体积稍大， 上缠绕有线圈 1" ， 线圈 1" 固定在外壳 6〃上， 线圈 1" 的两端引出导线与外部电源相连， 震动体 4〃基本填满方形外壳 6" ， 震动体 4〃通过填 塞在震动体两侧与方形外壳之间的空隙的有孔硅橡胶体 5"与外壳 6"相连，将震动传递到外 壳。
在不脱离本发明设计方案前提下， 本领域技术人员对本发明的技术方案作出的各种变形 和改进， 均应落入本发明的权利要求书的保护范围内。
工业实用性
本发明微型电磁震动器作为震动源可广泛用于手机， 游戏机， 电动按摩器等设备上。

Claims

权 利 要 求 、 一种微型电磁震动器， 其特征在于： 由设置在方形外壳内的线圈、 一字形铁芯、 防撞垫、 磁钢、 震动体和弹性装置构成， 所述一字形铁芯、 防撞垫和磁钢均设置在震动体内部， 所 述一字形铁芯的两端面分别连接所述防撞垫并正对所述磁钢的一面，所述磁钢的另一面嵌 在所述震动体内； 所述一字形铁芯有一个或多个， 铁芯上缠绕有线圈， 所述线圈固定在所 述外壳上， 线圈的两端引出导线与外部电源相连， 所述震动体基本填满方形外壳， 震动体 通过弹性装置与外壳相连。
、 根据权利要求 1所述的微型电磁震动器， 其特征在于： 所述一字形铁芯为一个， 位于所述 震动体内的下部。
、 根据权利要求 1所述的微型电磁震动器， 其特征在于： 所述一字形铁芯为一个， 位于所述 震动体内的中部。
、 根据权利要求 1所述的微型电磁震动器，其特征在于：所述一字形铁芯为体积较小的二个， 分别位于所述震动体内的上部和下部。
、 根据权利要求 1一 4任一项所述的微型电磁震动器， 其特征在于： 所述磁钢粘接在震动体 的凹槽内。
、 根据权利要求 5所述的微型电磁震动器， 其特征在于： 所述弹性装置为分别位于震动体 两侧的菱形的簧片，所述菱形簧片的一边的突出点连接在所述震动体的侧边的中部， 另一 边的突出点与所述方形外壳的内壁连接。
、 根据权利要求 5所述的微型电磁震动器， 其特征在于： 所述弹性装置为分别位于震动体 两侧的截面为曲线形的簧片，所述曲线形簧片的上下两端分别与震动体的侧边连接， 中端 与所述方形外壳的内壁连接。
、 根据权利要求 5所述的微型电磁震动器， 其特征在于： 所述弹性装置为填塞在震动体两 侧与方形外壳之间的空隙的有孔硅橡胶体。
、根据权利要求 6— 7任一项所述的微型电磁震动器， 其特征在于： 所述连接方式为粘接或 焊接或铆接。
PCT/CN2009/074630 2008-11-24 2009-10-27 微型电磁震动器 WO2010057409A1 (zh)

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CN101478219B (zh) * 2008-11-24 2010-09-29 浙江陆发微电机有限公司 微型电磁震动器
CN103066789B (zh) * 2013-01-24 2016-04-20 乐清市陆宇微电机有限公司 扁平式电磁线性振动器
CN109819383B (zh) * 2019-01-30 2020-07-07 汉得利（常州）电子股份有限公司 一种双轴立体振感触觉反馈激励器

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