WO2020232987A1 - 一种具有s型弹簧片的线性振动马达 - Google Patents

一种具有s型弹簧片的线性振动马达 Download PDF

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Publication number
WO2020232987A1
WO2020232987A1 PCT/CN2019/116223 CN2019116223W WO2020232987A1 WO 2020232987 A1 WO2020232987 A1 WO 2020232987A1 CN 2019116223 W CN2019116223 W CN 2019116223W WO 2020232987 A1 WO2020232987 A1 WO 2020232987A1
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WO
WIPO (PCT)
Prior art keywords
shaped spring
vibration motor
linear vibration
mass
upper casing
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PCT/CN2019/116223
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English (en)
French (fr)
Inventor
李华京
李志锋
林岳崇
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领先科技(东台)有限公司
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Priority to US17/058,668 priority Critical patent/US20210211030A1/en
Publication of WO2020232987A1 publication Critical patent/WO2020232987A1/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
    • H02K33/02—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • 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
    • H02K33/16—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
    • H02K33/18—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system

Definitions

  • the present disclosure relates to the field of motor technology, and in particular to a linear vibration motor with S-shaped spring plates.
  • the traditional vibration generating device uses a rotor motor based on eccentric rotation, which realizes mechanical vibration through the rotation of an eccentric vibrator. As the eccentric vibrator rotates, the commutator and brush will generate mechanical friction and electric sparks, which will affect The rotation speed of the eccentric vibrator affects the vibration effect of the device. Therefore, the vibration generating device mostly uses a linear motor with better performance.
  • Linear motors also known as linear motors, linear motors, push rod motors, etc.
  • linear motors also known as linear motors, linear motors, push rod motors, etc.
  • the most commonly used linear motor types are flat plate, U-slot and tube type. It is a technology that converts electrical energy into linear motion mechanical energy. The repulsive force of the magnet makes the moving element levitate, and at the same time, the moving element is directly driven by the magnetic force. It does not need to be driven by a transmission mechanism such as a gear set like a rotary motor. Therefore, a linear motor can make the moving element driven by it perform High acceleration and deceleration reciprocating motion. With this feature, linear motors can be used in different manufacturing and processing technology fields, and used as a driving power source or as a technical content to provide positioning.
  • the present disclosure proposes a linear vibration motor with an S-shaped spring leaf.
  • a linear vibration motor with an S-shaped spring plate comprising an upper casing and a lower casing.
  • the upper casing and the lower casing are provided with a mover assembly and a stator assembly corresponding to the mover assembly.
  • the stator assembly is located in the moving
  • the lower part of the sub-assembly is fixed on the lower casing.
  • the two ends of the mover assembly along the X direction are respectively elastically connected to the upper casing through S-shaped spring pieces.
  • the S-shaped spring pieces include upper and lower elastic arms connected to the upper casing.
  • the fixing part of the middle layer connected with the moving subassembly, the two elastic arms are respectively connected with the fixing part through the first bending part, and a first groove is formed between the two elastic arms and the fixing part respectively.
  • the stator assembly interacts with the mover assembly to make the mover assembly receive a certain force
  • the mover assembly vibrates in the X direction by cooperating with two S-shaped spring plates.
  • the S-shaped spring plate structure Simple, convenient processing, low production cost, stable elasticity coefficient, large elasticity, the upper and lower elastic arms are respectively connected with the upper casing, and the fixed part of the middle layer is connected with the mover assembly, and the connection stability and reliability are high , Improve the mass production capacity and process yield of the spring leaf, ensure the stable vibration of the mass block, and the first bending part and the first groove body can release the stress of the spring leaf, prevent the spring leaf from deforming, and have high structural stability , Long service life, thereby improving the vibration effect and stability of the motor.
  • the two first bending portions are respectively connected to the fixing portion through the inclined portion, which improves the elastic force of the spring sheet.
  • an adjustment groove is provided on the inclined portion, which is convenient for controlling the width of the elastic arm and adjusting the frequency of the spring leaf.
  • an end of the elastic arm away from the first bending portion is provided with a first widened portion connected to the upper casing, which facilitates the connection of the S-shaped spring leaf with the upper casing and improves the connection strength.
  • the intersection of the first widened portion and the elastic arm is bent, and the first widened portion is parallel to the inner wall of the upper casing to which it is connected, which further improves the elasticity and makes it easier for the S-shaped spring leaf to interact with Connect the upper case.
  • the mover assembly includes a mass block on which more than three permanent magnets arranged in the X direction are arranged.
  • the permanent magnets are magnetized in the Z direction and the magnetization directions of adjacent permanent magnets are opposite.
  • the stator assembly includes Two or more coils arranged in the X direction, the current direction of the adjacent coils is opposite, the number of coils is one less than the number of permanent magnets, and the end of the outer coil away from the adjacent coil corresponds to a permanent magnet.
  • the close end corresponds to the same permanent magnet, and the coil can be connected to an external circuit through a flexible circuit board fixed on the lower casing.
  • two S-shaped spring pieces suspend the mass in the upper casing, and the middle of the two ends of the mass in the X direction are respectively provided with positioning parts connected to the fixed part, which is convenient for the S-shaped spring pieces and the mass. Block connection.
  • the mass is provided with a number of first through holes that cooperate with the permanent magnets to facilitate the placement of the permanent magnets.
  • the bottom of the mass block is provided with an avoidance groove that cooperates with the coil, and the avoidance groove communicates with the first through hole.
  • two limit buffer blocks are respectively provided at both ends of the mass block along the X direction, and the two limit buffer blocks respectively correspond to the two elastic arms.
  • FIG. 1 is an exploded view of a linear vibration motor with S-shaped springs provided by an embodiment of the disclosure.
  • Fig. 2 is a cross-sectional view of a linear vibration motor with an S-shaped spring leaf provided by an embodiment of the disclosure.
  • FIG. 3 is a schematic diagram of a three-dimensional structure of a linear vibration motor with an S-shaped spring leaf provided by an embodiment of the disclosure, with the housing removed.
  • FIG. 4 is a schematic diagram of the three-dimensional structure of the S-shaped spring sheet provided by the embodiment of the disclosure.
  • Fig. 5 is a front view of an S-shaped spring sheet provided by an embodiment of the disclosure.
  • connection should be interpreted broadly. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection should be interpreted broadly. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • FIG. 1 is an exploded view of a linear vibration motor with S-shaped springs provided by an embodiment of the disclosure
  • FIG. 2 is a cross-sectional view of a linear vibration motor with S-shaped springs provided by an embodiment of the disclosure
  • FIG. 3 is An embodiment of the present disclosure provides a three-dimensional structural diagram of a linear vibration motor with an S-shaped spring plate removed from the housing.
  • FIG. 4 is a three-dimensional structure diagram of an S-shaped spring plate provided by an embodiment of the present disclosure
  • FIG. 5 is provided for an embodiment of the present disclosure The front view of the S-shaped spring leaf.
  • a linear vibration motor with S-shaped springs includes an upper housing 1 and a lower housing 2.
  • the upper housing 11 and the lower housing 22 are usually welded and connected, and the upper housing 1 and the lower housing
  • the housing 2 is provided with a mover assembly 3 and a stator assembly 4 corresponding to the mover assembly 3.
  • the stator assembly 4 is located below the mover assembly 3 and is fixed on the lower housing 2.
  • the mover assembly 3 moves along the X direction Both ends are elastically connected to the upper casing 1 through S-shaped spring sheets 5 respectively.
  • the S-shaped spring plate 5 includes three layers.
  • the upper and lower elastic arms 51 are respectively connected to the upper casing 1, and the fixed portion 52 of the middle layer is connected to the mover assembly 3, usually by welding.
  • the two elastic arms 51 The two elastic arms 51 are respectively connected to the fixing portion 52 through the first bending portion 53, and a first groove 54 is formed between the two elastic arms 51 and the fixing portion 52 respectively.
  • the X direction and the Z direction are given, the X direction is the vibration direction of the mover assembly 3, the Z direction is the vertical direction, the X direction and the Z direction are perpendicular to the Y direction, and the X direction and the Y direction are The vertical and horizontal in the horizontal direction, "up” and “down” in the text are all based on the Z direction.
  • the stator assembly 4 interacts with the mover assembly 3 to make the mover assembly 3 receive a certain force.
  • the mover assembly 3 cooperates with the two S-shaped spring plates 5 to vibrate in the X direction to achieve The vibration of the motor.
  • the present disclosure adopts the S-shaped spring sheet 5, which has simple structure, convenient processing, low manufacturing cost, stable elasticity coefficient, and large elasticity.
  • the upper and lower elastic arms 51 are respectively connected to the upper casing 1.
  • the fixed part 52 of the middle layer is connected with the mover assembly 3, thus forming a three-point welding connection and symmetrical distribution, the stability and reliability of the connection are high, the mass production capacity and process yield of the spring leaf are improved, and the mass block 31 is guaranteed to be stable
  • the first bending part 53 and the first groove body 54 are provided to not only control the volume of the spring leaf, improve the elastic force, but also release the stress of the spring leaf, prevent the spring leaf from deforming, and have high structural stability. Long service life, thereby improving the vibration effect and stability of the motor.
  • the two first bending portions 53 are respectively connected to the fixed portion 52 through the inclined portion 55, so that the inclined portion 55 is equivalent to a part of the elastic arm 51, that is, the inclined portion 55, the first bending portion 53, and the elastic arm 51 form an elastic portion , Improve the coefficient of elasticity and increase the elasticity.
  • an adjustment groove 551 is provided on the inclined portion 55. According to the user's specific vibration requirements of the motor, by setting the size of the adjustment groove 551, it is convenient to control the width of the elastic arm 51, thereby adjusting the elastic coefficient and adjusting the spring plate Frequency, where the larger the adjusting groove body 551, the smaller the elastic coefficient, and the smaller the frequency.
  • An end of the elastic arm 51 away from the first bent portion 53 is provided with a first widened portion 56 connected to the upper casing 1 to facilitate the welding connection of the S-shaped spring sheet 5 with the upper casing 1, and the connection strength is high. Furthermore, the intersection of the first widened portion 56 and the elastic arm 51 is bent, and the first widened portion 56 is parallel to the inner wall of the upper casing 1 to which it is connected, which not only makes it easier for the S-shaped spring plate 5 to interact with the upper casing 1
  • the casing 1 is welded and connected, and it is convenient to control the volume of the spring leaf, improve the elasticity, and is more stable and reliable.
  • the first widened portion 56 can also correspond to the adjusting groove body 551, so that the adjusting groove body 551 can also play a role of avoiding, and the structure is more compact.
  • the mover assembly 3 includes a mass block 31, which is also called a balance block, a vibrating block, a counterweight, etc.
  • the mass block 31 is provided with more than three permanent magnets 32 arranged in the X direction, and the permanent magnets 32 are magnetized in the Z direction And the magnetizing directions of the adjacent permanent magnets 32 are opposite.
  • the stator assembly 4 includes two or more coils 41 arranged in the X direction. The current directions of the adjacent coils 41 are opposite. The number of coils 41 is one less than the number of permanent magnets 32.
  • One end of the outer coil 41 away from the adjacent coil 41 corresponds to a permanent magnet 32
  • the outer coil 41 is the coil 41 at both ends along the X direction
  • the end of the adjacent coil 41 close to each other corresponds to the same permanent magnet 32, so that The direction of the ampere force received by each coil 41 is the same, so that the direction of the reaction force received by each permanent magnet 32 is also the same, so that the mover assembly 3 can better vibrate in the X direction, which is more stable and reliable.
  • 41 is connected to an external circuit through a flexible circuit board 42.
  • the flexible circuit board 42 is fixed on the lower casing 2.
  • the number of coils 41 and permanent magnets 32 is determined according to the size of the motor. When in use, the external circuit supplies power to the coil 41 through the flexible circuit board 42.
  • the energized coil 41 receives ampere force in the magnetic field generated by the permanent magnet 32. Since the coil 41 is fixed, the permanent magnet 32 receives a corresponding reaction force, thereby causing The mover assembly 3 vibrates in the X direction to realize the vibration of the motor, and the frequency and amplitude of the vibration of the mover assembly 3 can be changed by adjusting the current waveform of the coil 41, so as to generate different vibration sensations, rich in vibration sensations, and achieve multiple Different tactile feedback is easy to be applied to the power source of smart device tactile feedback, and the application range of the motor is improved.
  • the width of the outer permanent magnet 32 in the X direction is half of the width of the other permanent magnets 32 in the X direction.
  • the outer permanent magnets 32 are the permanent magnets 32 at both ends in the X direction. This ensures that both ends of each coil 41 The effect of the magnetic field is the same.
  • the flexible printed circuit board 42 is Flexible Printed Circuit, or FPC for short. It is made of polyimide or polyester film with high reliability and excellent flexibility.
  • the printed circuit board has the characteristics of high wiring density, light weight, thin thickness, and good bendability;
  • permanent magnet 32 refers to a magnet that can retain high remanence for a long time in an open circuit state, also called a hard magnet, such as Permanent magnets made of ferrite permanent magnetic materials or magnetic steel, etc., preferably magnetic steel.
  • Magnetic steel has the characteristics of high hardness, high coercivity, high temperature resistance, strong corrosion resistance, etc., and its permanent magnet characteristics are good. After being saturated magnetized, it can maintain strong and stable magnetism for a long time after the external magnetic field is removed.
  • Two S-shaped spring plates 5 suspend the mass 31 in the upper casing 1.
  • the middle of the two ends of the mass 31 along the X direction are respectively provided with positioning parts 311 connected to the fixing parts 52.
  • the positioning parts 311 may be connected to the S
  • the groove or boss of the fixed portion 52 of the type spring 5 can improve the accuracy of the connection between the S type spring 5 and the mass 31, and the connection point is located in the middle of the mass 31, which can reduce the vibration of the mass 31 The offset in the Y direction.
  • the mass 31 is provided with a first through hole 312 that is matched with the permanent magnet 32.
  • the number of the first through hole 312 is the same as that of the permanent magnet 32.
  • the permanent magnet 32 is arranged in the first through hole 312, usually by glue. , Easy assembly, compact structure and good stability.
  • the bottom of the mass 31 is provided with an avoiding groove 313 that is matched with the coil 41, and the avoiding groove 313 is connected to the first through hole 312. During the vibration of the mass 31, all the coils 41 are always located in the avoiding groove 313, and the structure is more compact. Stability and reliability are better.
  • Two limit buffer blocks 33 are respectively provided at both ends of the mass block 31 along the X direction.
  • the two limit buffer blocks 33 respectively correspond to the two elastic arms 51.
  • the limit buffer block 33 and the first widened portion 56 and the adjusting groove 551 correspond to each other.
  • the limit buffer 33 can prevent the mass 31 from directly contacting the elastic arm 51 of the S-shaped spring plate 5, thereby playing the role of buffer protection , More secure and reliable.
  • the two ends of the mass block 31 along the X direction are respectively provided with grooves for arranging the limit buffer blocks 33.
  • the limit buffer blocks 33 are usually glued in the grooves, so that the connection is more reliable, stable and reliable. higher.
  • the material of the limit buffer block 33 is one of rubber, polyurethane or foam.
  • Rubber has the advantages of good elasticity, high strength, and low price.
  • Polyurethane has high flexibility, resilience, mechanical strength and oxidation. Stability and excellent oil resistance.
  • Foam has the advantages of elasticity, light weight, fast pressure-sensitive fixation, convenient use, free bending, ultra-thin volume, and reliable performance.

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

Abstract

一种具有S型弹簧片（5）的线性振动马达，包括上机壳（1）和下机壳（2），上机壳（1）和下机壳（2）内设置有动子组件（3）及与动子组件（3）相对应配合的定子组件（4），定子组件（4）位于动子组件（3）的下方且固定在下机壳（2）上，动子组件（3）沿X方向的两端分别通过S型弹簧片（5）与上机壳（1）弹性连接，S型弹簧片（5）包括与上机壳（1）连接的上层和下层的弹性臂（51）及与动子组件（3）连接的中层的固定部（52），两个弹性臂（51）分别通过第一折弯部（53）与固定部（52）连接，两个弹性臂（51）分别与固定部（52）之间形成有第一槽体（54）。该马达的S型弹簧片（5）结构简单，加工方便，制作成本底，弹性系数稳定，弹力较大，稳定性和可靠性高，使用寿命长，提高了弹簧片的量产能力和制程良率，从而提高了马达的振动效果和稳定性。

Description

一种具有S型弹簧片的线性振动马达 技术领域
本公开涉及马达技术领域，尤其涉及一种具有S型弹簧片的线性振动马达。
背景技术
随着电子产品的快速发展，尤其在手机、平板电脑等移动终端设备，这些电子设备基本都有使用振动发生装置，用于防止来自电子装置的噪音干扰他人。传统的振动发生装置采用基于偏心旋转的转子马达，它是通过偏心振子的旋转而实现机械振动，由于偏心振子在旋转过程中，换向器和电刷会产生机械摩擦以及电火花等，会影响偏心振子的转速，进而影响装置振动效果，因此，振动发生装置多采用性能更好的线性马达。
线性马达，也称线性电机、直线马达、推杆马达等，最常用的线性马达类型是平板式、U型槽式和管式，其是一种将电能转换为直线运动机械能的技术，其通过磁铁的相斥力使移动元件悬浮，同时通过磁力直接驱动该移动元件，而无需如回转式马达般尚需经由如齿轮组等传动机构进行传动，因此，线性马达可以令其所驱动的移动元件进行高加、减速的往复运动，通过该特性，线性马达可以被应用于不同的制造加工技术领域中，而被作为驱动的动力源或作为提供定位的技术内容。此外，随着半导体、电子、光电、医疗设备及自动化控制等工业的快速发展及激烈竞争，各领域对于马达线性运动性能的要求也日渐升高，期望马达具有高速度、低噪音及高定位精度等，故在许多应用场合下都已使用线性马达来取代传统伺服马达等机械式的运动方式。
但是，现有的一些线性马达，其中的弹性件由于在设计上存在一定的缺陷，因而导致弹力不足、成本高、稳定性和可靠性差等问题，进而影响马达的振动效果、稳定性等。
发明内容
本公开针对上述现有线性马达存在的问题，提出一种具有S型弹簧片的线性振动马达。
为了解决上述技术问题中的至少一个，本公开提出如下技术方案：
一种具有S型弹簧片的线性振动马达，包括上机壳和下机壳，上机壳和下机壳内设置有动子组件及与动子组件相对应配合的定子组件，定子组件位于动子组件的下方且固定在下机壳上，动子组件沿X方向的两端分别通过S型弹簧片与上机壳弹性连接，S型弹簧片包括与上机壳连接的上层和下层的弹性臂及与动子组件连接的中层的固定部，两个弹性臂分别通过第一折弯部与固定部连接，两个弹性臂分别与固定部之间形成有第一槽体。
本公开的有益效果是：定子组件与动子组件相互作用以使动子组件受到一定的作用力，动子组件通过与两个S型弹簧片相配合沿X方向进行振动，S型弹簧片结构简单，加工方便，制作成本底，弹性系数稳定，弹力较大，其上层和下层的弹性臂分别与上机壳连接，其中层的固定部与动子组件连接，连接的稳定性和可靠性高，提高了弹簧片的量产能力和制程良率，保证质量块稳定地进行振动，而且第一折弯部和第一槽体能够释放弹簧片的应力，防止弹簧片产生形变，结构稳定性高，使用寿命长，从而提高了马达的振动效果和稳定性。
在一些实施方式中，两个第一折弯部分别通过倾斜部与固定部连接，提高了弹簧片的弹力。
在一些实施方式中，倾斜部上设置有调节槽体，便于控制弹性臂的宽度，调整弹簧片的频率。
在一些实施方式中，弹性臂远离第一折弯部的一端设置有与上机壳连接的第一加宽部，便于S型弹簧片与上机壳连接，提高连接强度。
在一些实施方式中，第一加宽部与弹性臂的交汇处折弯，并且第一加宽部与其相连接的上机壳的内壁平行，进一步提高了弹力，而且更加便于S型弹簧片与上机壳连接。
在一些实施方式中，动子组件包括质量块，质量块上设置有三个以上沿X方向排列的永磁体，永磁体沿Z方向充磁且相邻的永磁体的充磁方向相反，定子组件包括两个以上沿X方向排列的线圈，相 邻的线圈的电流方向相反，线圈的数量比永磁体的数量少一个，外侧的线圈远离相邻的线圈的一端对应一个永磁体，相邻的线圈相互靠近的一端对应同一个永磁体，线圈通过固定在下机壳上的柔性电路板能够与外部电路连接。
在一些实施方式中，两个S型弹簧片将质量块悬置在上机壳内，质量块沿X方向的两端中部分别设置有与固定部连接的定位部，便于S型弹簧片与质量块连接。
在一些实施方式中，质量块上设置有若干与永磁体相配合的第一通孔，便于安置永磁体。
在一些实施方式中，质量块的底部设置有与线圈相配合的避让槽，避让槽与第一通孔连通。
在一些实施方式中，质量块沿X方向的两端分别设置有两个限位缓冲块，两个限位缓冲块分别与两个弹性臂相对应配合。
另外，在本公开技术方案中，凡未作特别说明的，均可通过采用本领域中的常规手段来实现本技术方案。
附图说明
为了更清楚地说明本公开具体实施方式或现有技术中的技术方案，下面将对具体实施方式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，下面描述中的附图是本公开的一些实施方式，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为本公开实施例提供的一种具有S型弹簧片的线性振动马达的分解图。
图2为本公开实施例提供的一种具有S型弹簧片的线性振动马达的剖视图。
图3为本公开实施例提供的一种具有S型弹簧片的线性振动马达去除外壳的立体结构示意图。
图4为本公开实施例提供的S型弹簧片的立体结构示意图。
图5为本公开实施例提供的S型弹簧片的主视图。
附图中标号说明，上机壳1，下机壳2，动子组件3，质量块31， 定位部311，第一通孔312，避让槽313，永磁体32，限位缓冲块33，定子组件4，线圈41，柔性电路板42，S型弹簧片5，弹性臂51，固定部52，第一折弯部53，第一槽体54，倾斜部55，调节槽体551，第一加宽部56。
具体实施方式
为了使本公开的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本公开进行进一步详细说明。应当理解，此处所描述的具体实施例是本公开一部分实施例，而不是全部的实施例，仅用以解释本公开，并不用于限定本公开。基于本公开中的实施例，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，都属于本公开保护的范围。
在本公开的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”、“两端”、“两侧”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的元件必须具有特定的方位或者以特定的方位构造和操作，因此不能理解为对本公开的限制。此外，术语“第一”、“第二”、“上级”、“下级”、“主要”、“次级”等仅用于描述目的，可以简单地用于更清楚地区分不同的组件，而不能理解为指示或暗示相对重要性。
在本公开的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本公开中的具体含义。
图1为本公开实施例提供的一种具有S型弹簧片的线性振动马达的分解图，图2为本公开实施例提供的一种具有S型弹簧片的线性振动马达的剖视图，图3为本公开实施例提供的一种具有S型弹簧片的线性振动马达去除外壳的立体结构示意图，图4为本公开实施例提供的S型弹簧片的立体结构示意图，图5为本公开实施例提供的S型弹 簧片的主视图。
实施例：
如图1～5所示，一种具有S型弹簧片的线性振动马达，包括上机壳1和下机壳2，上机壳11和下机壳22通常焊接连接，上机壳1和下机壳2内设置有动子组件3及与动子组件3相对应配合的定子组件4，定子组件4位于动子组件3的下方且固定在下机壳2上，动子组件3沿X方向的两端分别通过S型弹簧片5与上机壳1弹性连接。具体地，S型弹簧片5包括三层，上层和下层的弹性臂51分别与上机壳1连接，中层的固定部52与动子组件3连接，通常采用焊接的方式，两个弹性臂51分别通过第一折弯部53与固定部52连接，两个弹性臂51分别与固定部52之间形成有第一槽体54。
在本公开中，给出了X方向和Z方向，X方向即动子组件3的振动方向，Z方向即竖直方向，垂直于X方向和Z方向的为Y方向，X方向和Y方向即水平方向的纵向和横向，文中的“上”、“下”等都是以Z方向作为基准来说的。
在使用过程中，定子组件4与动子组件3相互作用以使动子组件3受到一定的作用力，动子组件3通过与两个S型弹簧片5相配合沿X方向进行振动，从而实现马达的振动。与现有技术相比，本公开采用S型弹簧片5，结构简单，加工方便，制作成本底，弹性系数稳定，弹力较大，其上层和下层的弹性臂51分别与上机壳1连接，其中层的固定部52与动子组件3连接，这样形成三点焊接连接且对称分布，连接的稳定性和可靠性高，提高了弹簧片的量产能力和制程良率，保证质量块31稳定地进行振动，而且通过设置第一折弯部53和第一槽体54，不仅便于控制弹簧片的体积，提高弹力，还能够释放弹簧片的应力，防止弹簧片产生形变，结构稳定性高，使用寿命长，从而提高了马达的振动效果和稳定性。
两个第一折弯部53分别通过倾斜部55与固定部52连接，这样倾斜部55就相当于弹性臂51的一部分，即倾斜部55、第一折弯部53及弹性臂51形成弹性部，提高了弹性系数，增大了弹力。更进一步地，倾斜部55上设置有调节槽体551，根据用户对马达的具体振 动需求，通过设置调节槽体551的大小，便于控制弹性臂51的宽度，从而调节弹性系数，调整弹簧片的频率，其中调节槽体551越大，弹性系数越小，频率也越小。
弹性臂51远离第一折弯部53的一端设置有与上机壳1连接的第一加宽部56，便于S型弹簧片5与上机壳1焊接连接，而且连接后强度高。更进一步地，第一加宽部56与弹性臂51的交汇处折弯，并且第一加宽部56与其相连接的上机壳1的内壁平行，这样不仅更加便于S型弹簧片5与上机壳1焊接连接，而且便于控制弹簧片的体积，提高弹力，更加稳定、可靠。此外，第一加宽部56还可以与调节槽体551相对应，这样调节槽体551也能起到避让的作用，结构更加紧凑。
动子组件3包括质量块31，质量块31也称平衡块、振动块、配重块等，质量块31上设置有三个以上沿X方向排列的永磁体32，永磁体32沿Z方向充磁且相邻的永磁体32的充磁方向相反，定子组件4包括两个以上沿X方向排列的线圈41，相邻的线圈41的电流方向相反，线圈41的数量比永磁体32的数量少一个，外侧的线圈41远离相邻的线圈41的一端对应一个永磁体32，外侧的线圈41即沿X方向两端的线圈41，相邻的线圈41相互靠近的一端对应同一个永磁体32，从而能够使每个线圈41受到的安培力的方向相同，这样每个永磁体32受到的反作用力的方向也相同，从而使动子组件3能够更好地沿X方向进行振动，更加稳定、可靠，线圈41通过柔性电路板42与外部电路连接，柔性电路板42固定在下机壳2上，线圈41和永磁体32的数量根据马达的尺寸大小等而定。在使用时，外部电路通过柔性电路板42为线圈41供电，通电线圈41在永磁体32产生的磁场中受到安培力，由于线圈41固定不动，所以永磁体32受到相应的反作用力，从而使动子组件3沿X方向进行振动，实现马达的振动，而且通过调节线圈41的电流波形能够改变动子组件3振动的频率和幅度，从而能够产生不同的振感，振感丰富，实现多种不同的触觉反馈，便于应用于智能设备触觉反馈的动力源，提高了马达的应用范围。此外，外侧的永磁体32沿X方向的宽度是其它永磁体32沿X方向的宽度的一半，外侧的永磁体32即沿X方向两端的永磁体32， 这样能够保证每个线圈41的两端所受到的磁场作用相同。
此外，需要说明的是，柔性电路板42即Flexible Printed Circuit，简称FPC，它是以聚酰亚胺或聚酯薄膜为基材制成的一种具有高度的可靠性和绝佳的可挠性的印刷电路板，具有配线密度高、重量轻、厚度薄、弯折性好的特点；永磁体32是指在开路状态下能长期保留较高剩磁的磁体，也称硬磁体，比如由铁氧体永磁材料制成的永磁铁或者由磁钢等，优选磁钢，磁钢具有高硬度、矫顽力值高、耐高温、抗腐蚀性能强等特点，其永磁特性较好，被饱和磁化后，在撤掉外磁场后仍能长时间内保持较强和稳定的磁性。
两个S型弹簧片5将质量块31悬置在上机壳1内，质量块31沿X方向的两端中部分别设置有与固定部52连接的定位部311，定位部311可以是与S型弹簧片5的固定部52相配合的槽体或凸台，这样能够提高S型弹簧片5与质量块31的连接精度，而且连接点位于质量块31中间，能够减少质量块31振动过程中在Y方向上的偏移。
质量块31上设置有与永磁体32相配合的第一通孔312，第一通孔312与永磁体32的数量相同，永磁体32安置在第一通孔312中，通常采用胶粘的方式，组装方便，结构紧凑，稳定性好。
质量块31的底部设置有与线圈41相配合的避让槽313，避让槽313与第一通孔312连通，在质量块31振动过程中，所有线圈41始终位于避让槽313中，结构更加紧凑，稳定性和可靠性更好。
质量块31沿X方向的两端分别设置有两个限位缓冲块33，两个限位缓冲块33分别与两个弹性臂51相对应配合，通常限位缓冲块33、第一加宽部56及调节槽体551三者相互对应，在质量块31振动过程中，限位缓冲块33能够防止质量块31直接与S型弹簧片5的弹性臂51碰触，从而起到缓冲保护的作用，更加安全、可靠。更进一步地，质量块31沿X方向的两端分别设置有用于安置限位缓冲块33的槽体，限位缓冲块33通常胶粘在槽体中，这样连接更加牢靠，稳定性和可靠性更高。此外，限位缓冲块33的材料为橡胶、聚氨酯或泡棉中的一种，橡胶具有弹性好、强度高、价格低廉等优点，聚氨酯具有较高的柔曲性、回弹性、机械强度和氧化稳定性以及优良的耐油 性等优点，泡棉具有弹性、重量轻、快速压敏固定、使用方便、弯曲自如、体积超薄、性能可靠等优点。
以上所述的仅是本公开的一些实施方式，仅用以说明本公开的技术方案，而非对其限制，应当理解的是，对本领域的普通技术人员来说，在不脱离本公开创造构思的前提下，还可以根据上述说明加以改进或替换，而所有这些改进和替换都应属于本公开所附权利要求的保护范围。在这种情况下，所有细节都可以用等效元素代替，材料、形状和尺寸也可以是任意的。

Claims (10)

  1. 一种具有S型弹簧片的线性振动马达，其特征在于，包括上机壳(1)和下机壳(2)，所述上机壳(1)和所述下机壳(2)内设置有动子组件(3)及与所述动子组件(3)相对应配合的定子组件(4)，所述定子组件(4)位于所述动子组件(3)的下方且固定在所述下机壳(2)上，所述动子组件(3)沿X方向的两端分别通过S型弹簧片(5)与所述上机壳(1)弹性连接，所述S型弹簧片(5)包括与所述上机壳(1)连接的上层和下层的弹性臂(51)及与所述动子组件(3)连接的中层的固定部(52)，两个所述弹性臂(51)分别通过第一折弯部(53)与所述固定部(52)连接，两个所述弹性臂(51)分别与所述固定部(52)之间形成有第一槽体(54)。
  2. 根据权利要求1所述的一种具有S型弹簧片的线性振动马达，其特征在于，两个所述第一折弯部(53)分别通过倾斜部(55)与所述固定部(52)连接。
  3. 根据权利要求2所述的一种具有S型弹簧片的线性振动马达，其特征在于，所述倾斜部(55)上设置有调节槽体(551)。
  4. 根据权利要求1所述的一种具有S型弹簧片的线性振动马达，其特征在于，所述弹性臂(51)远离所述第一折弯部(53)的一端设置有与所述上机壳(1)连接的第一加宽部(56)。
  5. 根据权利要求4所述的一种具有S型弹簧片的线性振动马达，其特征在于，所述第一加宽部(56)与所述弹性臂(51)的交汇处折弯，并且所述第一加宽部(56)与其相连接的所述上机壳(1)的内壁平行。
  6. 根据权利要求1至5中任一权利要求所述的一种具有S型弹簧片的线性振动马达，其特征在于，所述动子组件(3)包括质量块(31)，所述质量块(31)上设置有三个以上沿X方向排列的永磁体(32)，所述永磁体(32)沿Z方向充磁且相邻的所述永磁体(32)的充磁方向相反，所述定子组件(4)包括两个以上沿X方向排列的线圈(41)，相邻的所述线圈(41)的电流方向相反，所述线圈(41)的数量比所述永磁体(32)的数量少一个，外侧的所述线圈(41)远 离相邻的所述线圈(41)的一端对应一个所述永磁体(32)，相邻的所述线圈(41)相互靠近的一端对应同一个所述永磁体(32)，所述线圈(41)通过固定在所述下机壳(2)上的柔性电路板(42)能够与外部电路连接。
  7. 根据权利要求6所述的一种具有S型弹簧片的线性振动马达，其特征在于，两个所述S型弹簧片(5)将所述质量块(31)悬置在所述上机壳(1)内，所述质量块(31)沿X方向的两端中部分别设置有与所述固定部(52)连接的定位部(311)。
  8. 根据权利要求6所述的一种具有S型弹簧片的线性振动马达，其特征在于，所述质量块(31)上设置有若干与所述永磁体(32)相配合的第一通孔(312)。
  9. 根据权利要求8所述的一种具有S型弹簧片的线性振动马达，其特征在于，所述质量块(31)的底部设置有与所述线圈(41)相配合的避让槽(313)，所述避让槽(313)与所述第一通孔(312)连通。
  10. 根据权利要求6所述的一种具有S型弹簧片的线性振动马达，其特征在于，所述质量块(31)沿X方向的两端分别设置有两个限位缓冲块(33)，两个所述限位缓冲块(33)分别与两个所述弹性臂(51)相对应配合。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113809896A (zh) * 2021-09-06 2021-12-17 汉得利（常州）电子股份有限公司 一种微型触觉执行器及其加工方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110086313A (zh) * 2019-05-20 2019-08-02 领先科技(东台)有限公司 一种具有s型弹簧片的线性振动马达
WO2020258265A1 (zh) * 2019-06-28 2020-12-30 瑞声声学科技(深圳)有限公司 一种振动电机
CN110957880B (zh) * 2019-12-26 2021-11-09 浙江省东阳市东磁诚基电子有限公司 一种小型线性马达结构及其实现方法
CN111725965B (zh) * 2020-07-01 2022-08-23 浙江省东阳市东磁诚基电子有限公司 一种非接触式振动阻尼的线性振动电机及其实现方法
TWI755077B (zh) * 2020-09-28 2022-02-11 台睿精工股份有限公司 線性震動馬達
CN112803697B (zh) * 2021-01-18 2022-03-25 深圳市泓之发机电有限公司 线性驱动组件
CN113972808B (zh) * 2021-10-27 2023-05-09 歌尔股份有限公司 一种线性振动马达

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102684445A (zh) * 2011-03-07 2012-09-19 德昌电机(深圳)有限公司 电动剪切工具及其驱动器
JP2015044177A (ja) * 2013-08-29 2015-03-12 日本電産コパル株式会社 振動アクチュエータ
CN206807249U (zh) * 2017-04-21 2017-12-26 深圳市信维通信股份有限公司 带有交叉型弹片的线性马达
CN207098908U (zh) * 2017-04-14 2018-03-13 瑞声科技(新加坡)有限公司 振动器件
CN110086313A (zh) * 2019-05-20 2019-08-02 领先科技(东台)有限公司 一种具有s型弹簧片的线性振动马达
CN209844807U (zh) * 2019-05-20 2019-12-24 领先科技(东台)有限公司 一种具有s型弹簧片的线性振动马达

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205583976U (zh) * 2016-03-25 2016-09-14 歌尔声学股份有限公司 线性振动马达
CN205792148U (zh) * 2016-06-06 2016-12-07 歌尔股份有限公司 一种线性振动马达
CN206041770U (zh) * 2016-08-12 2017-03-22 歌尔股份有限公司 一种设置有多振子的线性振动器
CN107370323B (zh) * 2017-04-14 2019-08-02 瑞声科技(新加坡)有限公司 振动器件和电子设备
CN207075080U (zh) * 2017-04-21 2018-03-06 瑞声科技(新加坡)有限公司 振动器件和电子设备

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102684445A (zh) * 2011-03-07 2012-09-19 德昌电机(深圳)有限公司 电动剪切工具及其驱动器
JP2015044177A (ja) * 2013-08-29 2015-03-12 日本電産コパル株式会社 振動アクチュエータ
CN207098908U (zh) * 2017-04-14 2018-03-13 瑞声科技(新加坡)有限公司 振动器件
CN206807249U (zh) * 2017-04-21 2017-12-26 深圳市信维通信股份有限公司 带有交叉型弹片的线性马达
CN110086313A (zh) * 2019-05-20 2019-08-02 领先科技(东台)有限公司 一种具有s型弹簧片的线性振动马达
CN209844807U (zh) * 2019-05-20 2019-12-24 领先科技(东台)有限公司 一种具有s型弹簧片的线性振动马达

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113809896A (zh) * 2021-09-06 2021-12-17 汉得利（常州）电子股份有限公司 一种微型触觉执行器及其加工方法

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