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WO2022000648A1 - 基于线性马达的触觉反馈结构 - Google Patents

基于线性马达的触觉反馈结构 Download PDF

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Publication number
WO2022000648A1
WO2022000648A1 PCT/CN2020/104639 CN2020104639W WO2022000648A1 WO 2022000648 A1 WO2022000648 A1 WO 2022000648A1 CN 2020104639 W CN2020104639 W CN 2020104639W WO 2022000648 A1 WO2022000648 A1 WO 2022000648A1
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WO
WIPO (PCT)
Prior art keywords
linear motor
bracket
elastic sheet
feedback structure
touch panel
Prior art date
Application number
PCT/CN2020/104639
Other languages
English (en)
French (fr)
Inventor
陈勇勇
丁祥
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)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.)
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Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022000648A1 publication Critical patent/WO2022000648A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • 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
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines

Definitions

  • the invention relates to the technical field of haptic feedback, in particular to a haptic feedback structure based on a linear motor.
  • the haptic feedback structure based on linear motor is more and more widely used in the interactive experience of consumer electronic products, and has obtained good user experience feedback.
  • linear motors In the application of linear motors in interactive devices, users feel the vibration of the touchpad through their fingers, so as to obtain a real tactile experience. Therefore, it is necessary to design the suspension structure of the touchpad in the interactive device.
  • the quality of the suspension structure directly affects the noise level of the system structure and the design of the short motor effect in the later stage.
  • the haptic feedback structure in the related art has the problem that the noise reduction effect and the vibration amount of the motor short effect caused by the anisotropic vibration of the touch panel are not ideal.
  • the purpose of the present invention is to provide a haptic feedback structure based on a linear motor, which can effectively reduce the anisotropic vibration of the touch panel, thereby reducing the structure radiation noise, and enhancing the vibration amount of the motor short effect, thereby improving the user experience.
  • a tactile feedback structure based on a linear motor comprising: a touch panel; a bracket, which is assembled with the touch panel to form an accommodation space; a linear motor, located in the accommodation space and fixed to the bracket, and the linear motor can at least Vibration is generated along a first direction, the first direction is parallel to the touchpad; a base is spaced from the bracket and is located on the side of the bracket away from the touchpad; The first direction is vertical, one end of the elastic piece is fixed to the bracket, and the other end of the elastic piece is fixed to the base; wherein, the stiffness of the elastic piece along the direction from the base to the bracket is greater than that of the elastic piece along the first stiffness in the direction.
  • the elastic sheet is provided with a through hole, and the through hole penetrates the elastic sheet along the first direction.
  • the elastic sheet is integrally formed with the bracket.
  • one end of the elastic sheet is embedded in the bracket.
  • a side of the bracket away from the touchpad protrudes to form a fixing block, and one end of the elastic sheet is fixed to a surface of the fixing block on one side along the first direction.
  • one end of the elastic sheet away from the base extends along the first direction to form a bent portion, and the bent portion is fixed on the bracket.
  • the bracket includes a bottom wall parallel to the touch panel and spaced apart, and a side wall bent from the periphery of the bottom wall to the touch panel, and the linear motor is fixed on the bottom wall , the side wall is fixed with the touch panel, and one end of the elastic sheet is connected to the bottom wall.
  • At least two elastic pieces are provided, and at least two of the elastic pieces are arranged at intervals along the first direction.
  • the beneficial effect of the linear motor-based haptic feedback structure is that the bracket and the base are connected by arranging the elastic sheet perpendicular to the first direction, and the elastic sheet is arranged along the The stiffness in the direction from the base to the bracket is greater than the stiffness of the elastic sheet along the first direction, so that under the action of the linear motor (the linear motor vibrates when the linear motor is powered on), the elastic sheet will appear along all directions.
  • the first direction swings back and forth in a small range to drive the touch panel to reciprocate in the first direction. In this way, the vibration of the touch panel in other directions other than the first direction can be effectively reduced, thereby reducing structural radiation noise, enhancing the vibration amount of the motor short effect, and improving user experience.
  • FIG. 1 is a schematic structural diagram of a linear motor-based haptic feedback structure provided by the present invention.
  • FIG. 2 is a schematic diagram of the principle of the reciprocating motion of the elastic piece shown in FIG. 1 .
  • FIG. 3 is a schematic structural diagram of an embodiment of the elastic sheet shown in FIG. 1 .
  • FIG. 4 is a schematic structural diagram of another embodiment of the elastic sheet shown in FIG. 1 .
  • FIG. 5 is a schematic structural diagram of the first embodiment of the connection between the elastic sheet shown in FIG. 1 and the bracket.
  • FIG. 6 is a schematic structural diagram of the second embodiment of the connection between the elastic sheet and the bracket shown in FIG. 1 .
  • FIG. 7 is a schematic structural diagram of a third embodiment of the connection between the elastic sheet and the bracket shown in FIG. 1 .
  • FIG. 8 is a schematic structural diagram of the fourth embodiment of the connection between the elastic piece shown in FIG. 1 and the bracket.
  • the haptic feedback structure based on linear motors can be applied to complex interactive devices such as automobiles (such as large central control screens, steering wheel buttons, etc.).
  • the linear motor-based haptic feedback structure includes a touch panel 1, a bracket 3, a linear motor 5, a base 7 and a sheet-like elastic piece 8, the bracket 3 and the touch panel 1 are assembled to form a receiving space 10,
  • the linear motor 5 is located in the receiving space 10 and is fixed to the bracket 3 .
  • the linear motor 5 can at least generate vibration along a first direction X, and the first direction X is parallel to the touch panel 1 ,
  • the base 7 is spaced from the bracket 3 and is located on the side of the bracket 3 away from the touch panel 1 , the elastic piece 8 is perpendicular to the first direction X, and one end of the elastic piece 8 is fixed to the The other end of the bracket 3 is fixed to the base 7 .
  • the stiffness of the elastic piece 8 along the direction from the base 7 to the bracket 3 is greater than the stiffness of the elastic piece 8 along the first direction X. Since the stiffness of the elastic piece 8 along the direction from the base 7 to the bracket 3 is greater than the stiffness of the elastic piece 8 along the first direction X, the Under the action of the motor 5 vibrating when powered on), there will be a small reciprocating swing in the first direction X (as shown in FIG. 2 ), so as to drive the touch panel 1 to reciprocate in the first direction X.
  • the modal frequency of the haptic feedback structure based on the linear motor can be adjusted by adjusting the thickness, height and material of the elastic sheet 8 according to actual needs, and further, the structural strength of the elastic sheet can also be adjusted by optimizing the structure of the elastic sheet 8.
  • Structural modal frequencies for linear motor-based haptic feedback For example, a through hole 81 penetrating the elastic piece 8 along the first direction X may be provided on the elastic piece 8 to adjust the structural strength of the elastic piece and the modal frequency of the tactile feedback structure based on the linear motor, the through hole 81 .
  • the elastic piece 8 is provided with a through hole 81 , and the through hole 81 is rectangular; as shown in FIG.
  • the elastic piece 8 is provided with two through holes 81 .
  • the hole 81 has a rectangular shape. It can be understood that the number of the through holes 81 is not limited to one or two, and can also be set to three or four; the shape of the through holes 81 is not limited to a rectangle, but also a circle , triangle, trapezoid, etc.
  • the linear motor 5 only vibrates along the first direction X when the linear motor 5 is energized.
  • the two elastic pieces 8 are arranged along the first direction X at intervals. It can be understood that the number of the elastic pieces 8 is not limited to this, for example, the number of the elastic pieces 8 can also be set to three, four and so on.
  • the bracket 3 includes a bottom wall 31 parallel to the touch panel 1 and spaced apart, and a side wall 33 bent and extended from the periphery of the bottom wall 31 to the touch panel 1 .
  • the linear motor 5 is fixed on the bottom wall 31
  • the side wall 33 is fixed with the touch panel 1
  • one end of the elastic sheet 8 is connected to the bottom wall 31 .
  • the elastic piece 8 is integrally formed with the bracket 3 .
  • the elastic piece 8 and the bracket 3 can be integrally processed using the same material, and the processing method can be 3D printing or the like.
  • one end of the elastic sheet 8 is embedded in the bracket 3 .
  • the elastic piece 8 can be embedded in the bottom wall 31 of the bracket 3 by means of a riveting process and a snap connection.
  • a side of the bracket 3 away from the touch panel 1 protrudes to form a fixing block 35 , and one end of the elastic sheet 8 is fixed to the surface of the fixing block 35 along the first direction X side .
  • the elastic sheet 8 and the fixing block 35 may be fixedly connected by means of fasteners (screws or bolts) or gluing.
  • one end of the elastic piece 8 away from the base 7 extends along the first direction X to form a bent portion 9 , and the bent portion 9 is fixed on the bracket 3 .
  • the bending portion 9 can be fixedly connected to the bracket 3 by means of fasteners (screws or bolts) or gluing, so as to realize the fixing of the elastic sheet 8 to the bracket 3 .
  • the bending portions 9 are formed on opposite sides of the elastic sheet 8 along the first direction X to extend.
  • the beneficial effect of the linear motor-based haptic feedback structure provided by the present invention is that the bracket 3 and the base 7 are connected by arranging the elastic piece 8 perpendicular to the first direction X, and the elastic piece 8 is arranged along the The stiffness in the direction from the base 7 to the bracket 3 is greater than the stiffness of the elastic sheet 8 along the first direction X, so that the elastic sheet 8 acts on the linear motor 5 (the linear motor 5 vibrates when the linear motor 5 is powered on). Then, there will be a small reciprocating swing along the first direction X, so as to drive the touch panel 1 to reciprocate in the first direction X. In this way, the vibration of the touch panel 1 in other directions other than the first direction X can be effectively reduced, thereby reducing the structural radiation noise, enhancing the vibration amount of the motor short effect, and improving the user experience.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • User Interface Of Digital Computer (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

一种基于线性马达的触觉反馈结构。基于线性马达的触觉反馈结构包括触摸板(1)、与触摸板组配形成收容空间(10)的支架(3)、位于收容空间内并固定于支架(3)的线性马达(5)、底座(7)及片状的弹片(8)，线性马达至少可产生沿第一方向的振动，第一方向平行于触摸板，底座与支架间隔设置并位于支架远离触摸板的一侧，弹片与第一方向垂直，弹片一端固定于支架，其另一端固定于底座，其中，弹片沿底座至支架方向上的刚度大于弹片沿第一方向上的刚度。

Description

基于线性马达的触觉反馈结构 技术领域
本发明涉及触觉反馈技术领域，具体涉及一种基于线性马达的触觉反馈结构。
 背景技术
基于线性马达的触觉反馈结构在消费电子产品的交互体验中的应用越来越广泛，获得了很好的用户体验反馈。对于线性马达在交互设备中的应用，用户是通过手指去感受触摸板的振动，从而获得真实的触觉体验。因此需要对交互设备中的触摸板进行悬浮结构设计，悬浮结构的好坏直接影响到后期系统结构噪声大小和马达短效果设计。然而相关技术中的触觉反馈结构存在因触摸板异向振动导致的降噪效果及马达短效果的振动量不理想的问题。
因此，有必要对现有的基于线性马达的触觉反馈结构进行改进以避免上述缺陷。
 技术问题
本发明的目的在于提供一种基于线性马达的触觉反馈结构，该基于线性马达的触觉反馈结构可有效降低触摸板的异向振动，进而降低结构辐射噪声，增强马达短效果的振动量，从而提升用户体验。
 技术解决方案
本发明的技术方案如下。
一种基于线性马达的触觉反馈结构，包括:触摸板; 支架，与所述触摸板组配形成收容空间; 线性马达，位于所述收容空间内并固定于所述支架，所述线性马达至少可产生沿第一方向的振动，所述第一方向平行于所述触摸板; 底座，与所述支架间隔设置并位于所述支架远离所述触摸板的一侧;片状的弹片，与所述第一方向垂直，所述弹片一端固定于所述支架，其另一端固定于所述底座;其中，所述弹片沿所述底座至所述支架方向上的刚度大于所述弹片沿所述第一方向上的刚度。
优选地，所述弹片上设有通孔，所述通孔沿所述第一方向贯穿所述弹片。
优选地，所述弹片与所述支架一体成型。
优选地，所述弹片的一端嵌入所述支架中。
优选地，所述支架远离所述触摸板的一侧凸起形成固定块，所述弹片的一端固定于所述固定块沿所述第一方向一侧的表面。
优选地，所述弹片远离所述底座的一端沿所述第一方向延伸形成折弯部，所述折弯部固定在所述支架上。
优选地，所述支架包括与所述触摸板平行且间隔设置的底壁及自所述底壁的周缘弯折延伸至所述触摸板的侧壁，所述线性马达固定于所述底壁上，所述侧壁与所述触摸板固定，所述弹片的一端连接于所述底壁。
优选地，所述弹片设有至少两个，且至少两个所述弹片沿所述第一方向间隔设置。
 有益效果
与相关技术相比，本发明提供的基于线性马达的触觉反馈结构的有益效果在于：通过设置与所述第一方向垂直的所述弹片连接所述支架和所述底座，且所述弹片沿所述底座至所述支架方向上的刚度大于所述弹片沿所述第一方向上的刚度，从而使得所述弹片在所述线性马达（所述线性马达通电时振动）作用下，会出现沿所述第一方向小幅度往复摆动，以带动所述触摸板在所述第一方向实现往复运动。这样可以有效降低所述触摸板沿除所述第一方向外的其他方向的振动，进而降低结构辐射噪声，增强马达短效果的振动量，提升用户体验。
 附图说明
图1为本发明提供的基于线性马达的触觉反馈结构的结构示意图。
图2为图1所示弹片往复运动原理示意图。
图3为图1所示弹片一实施方式的结构示意图。
图4为图1所示弹片另一实施方式的结构示意图。
图5为图1所示弹片与支架连接的第一种实施方式结构示意图。
图6为图1所示弹片与支架连接的第二种实施方式结构示意图。
图7为图1所示弹片与支架连接的第三种实施方式结构示意图。
图8为图1所示弹片与支架连接的第四种实施方式结构示意图。
 本发明的最佳实施方式
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份实施例，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。
基于线性马达的触觉反馈结构可以应用于汽车（如汽车中控大屏、方向盘按键等）等复杂交互设备中。
请参阅图1，基于线性马达的触觉反馈结构包括触摸板1、支架3、线性马达5、底座7及片状的弹片8，所述支架3与所述触摸板1组配形成收容空间10，所述线性马达5位于所述收容空间10内并固定于所述支架3，所述线性马达5至少可产生沿第一方向X的振动，所述第一方向X平行于所述触摸板1，所述底座7与所述支架3间隔设置并位于所述支架3远离所述触摸板1的一侧，所述弹片8与所述第一方向X垂直，且所述弹片8一端固定于所述支架3，其另一端固定于所述底座7。其中，所述弹片8沿所述底座7至所述支架3方向上的刚度大于所述弹片8沿所述第一方向X上的刚度。由于所述弹片8沿所述底座7至所述支架3方向上的刚度大于所述弹片8沿所述第一方向X上的刚度，使得所述弹片8在所述线性马达5（所述线性马达5通电时振动）作用下，会出现沿所述第一方向X小幅度往复摆动（如图2所示），以带动所述触摸板1在所述第一方向X实现往复运动。
其中，可以根据实际需求通过调整所述弹片8的厚度、高度及材料来调整基于线性马达的触觉反馈结构的模态频率，进一步也可通过优化所述弹片8的结构来调整弹片的结构强度和基于线性马达的触觉反馈结构模态频率。例如，可以在所述弹片8上设置沿所述第一方向X贯穿所述弹片8的通孔81来调整弹片的结构强度和基于线性马达的触觉反馈结构模态频率，所述通孔81。如图3所示，所述弹片8上设有一个通孔81，所述通孔81呈矩形；如图4所示，所述弹片8上设有两个所述通孔81，所述通孔81呈矩形。可以理解的是，所述通孔81的数量并不局限于一个或两个，也可以设置三个、四个等；所述通孔81的形状并不局限于呈矩形，也可以呈圆形、三角形、梯形等。
在本实施例中，优选地，所述线性马达5在通电时，仅发生沿所述第一方向X的振动。
如图1所示，所述弹片8设有两个，且两个所述弹片8沿所述第一方向X间隔设置。可以理解的是，所述弹片8的数量并不局限于此，例如，所述弹片8的数量还可以设置为三个、四个等。
如图1所示，所述支架3包括与所述触摸板1平行且间隔设置的底壁31及自所述底壁31的周缘弯折延伸至所述触摸板1的侧壁33，所述线性马达5固定于所述底壁31上，所述侧壁33与所述触摸板1固定，所述弹片8的一端连接于所述底壁31。
如图5所示，所述弹片8与所述支架3一体成型。具体地，可以将所述弹片8和所述支架3使用同一种材料进行整体式加工，加工方式可以采用3D打印等。
如图6所示，所述弹片8的一端嵌入所述支架3中。具体地，所述弹片8可以通过压铆工艺、卡扣连接的方式嵌入所述支架3的所述底壁31。
如图7所示，所述支架3远离所述触摸板1的一侧凸起形成固定块35，所述弹片8的一端固定于所述固定块35沿所述第一方向X一侧的表面。具体地，可以通过紧固件（螺钉或螺栓）或胶粘等方式将所述弹片8与所述固定块35进行固定连接。
如图8所示，所述弹片8远离所述底座7的一端沿所述第一方向X延伸形成折弯部9，所述折弯部9固定在所述支架3上。具体地，可以通过紧固件（螺钉或螺栓）或胶粘等方式将所述折弯部9与所述支架3进行固定连接，从而实现将所述弹片8固定于所述支架3。在本实施方式中，所述弹片8沿所述第一方向X的相对两侧均延伸形成有所述折弯部9。
本发明提供的基于线性马达的触觉反馈结构的有益效果在于：通过设置与所述第一方向X垂直的所述弹片8连接所述支架3和所述底座7，且所述弹片8沿所述底座7至所述支架3方向上的刚度大于所述弹片8沿所述第一方向X上的刚度，从而使得所述弹片8在所述线性马达5（所述线性马达5通电时振动）作用下，会出现沿所述第一方向X小幅度往复摆动，以带动所述触摸板1在所述第一方向X实现往复运动。这样可以有效降低所述触摸板1沿除所述第一方向X外的其他方向的振动，进而降低结构辐射噪声，增强马达短效果的振动量，提升用户体验。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (8)

  1. 一种基于线性马达的触觉反馈结构，其特征在于，包括：
    触摸板；
    支架，与所述触摸板组配形成收容空间；
    线性马达，位于所述收容空间内并固定于所述支架，所述线性马达至少可产生沿第一方向的振动，所述第一方向平行于所述触摸板；
    底座，与所述支架间隔设置并位于所述支架远离所述触摸板的一侧；
    片状的弹片，与所述第一方向垂直，所述弹片一端固定于所述支架，其另一端固定于所述底座；
    其中，所述弹片沿所述底座至所述支架方向上的刚度大于所述弹片沿所述第一方向上的刚度。
  2. 根据权利要求1所述的基于线性马达的触觉反馈结构，其特征在于，所述弹片上设有通孔，所述通孔沿所述第一方向贯穿所述弹片。
  3. 根据权利要求1所述的基于线性马达的触觉反馈结构，其特征在于，所述弹片与所述支架一体成型。
  4. 根据权利要求1所述的基于线性马达的触觉反馈结构，其特征在于，所述弹片的一端嵌入所述支架中。
  5. 根据权利要求1所述的基于线性马达的触觉反馈结构，其特征在于，所述支架远离所述触摸板的一侧凸起形成固定块，所述弹片的一端固定于所述固定块沿所述第一方向一侧的表面。
  6. 根据权利要求1所述的基于线性马达的触觉反馈结构，其特征在于，所述弹片远离所述底座的一端沿所述第一方向弯延伸形成折弯部，所述折弯部固定在所述支架上。
  7. 根据权利要求3-6中任一项所述的基于线性马达的触觉反馈结构，其特征在于，所述支架包括与所述触摸板平行且间隔设置的底壁及自所述底壁的周缘弯折延伸至所述触摸板的侧壁，所述线性马达固定于所述底壁上，所述侧壁与所述触摸板固定，所述弹片的一端连接于所述底壁。
  8. 根据权利要求1所述的基于线性马达的触觉反馈结构，所述弹片设有至少两个，且至少两个所述弹片沿所述第一方向间隔设置。
PCT/CN2020/104639 2020-06-30 2020-07-24 基于线性马达的触觉反馈结构 WO2022000648A1 (zh)

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CN114879837A (zh) * 2022-04-15 2022-08-09 深圳市航盛电子股份有限公司 一种曲面触摸屏振动反馈屏结构
CN119065487A (zh) * 2023-05-31 2024-12-03 京东方科技集团股份有限公司 一种触觉反馈面板及其驱动方法、触觉反馈装置
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