WO2021213169A1 - 一种光学编码器手感切换机构 - Google Patents

一种光学编码器手感切换机构 Download PDF

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Publication number
WO2021213169A1
WO2021213169A1 PCT/CN2021/084865 CN2021084865W WO2021213169A1 WO 2021213169 A1 WO2021213169 A1 WO 2021213169A1 CN 2021084865 W CN2021084865 W CN 2021084865W WO 2021213169 A1 WO2021213169 A1 WO 2021213169A1
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WO
WIPO (PCT)
Prior art keywords
toggle
hand
torsion spring
optical encoder
switching mechanism
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PCT/CN2021/084865
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English (en)
French (fr)
Inventor
吴福喜
吴宇
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东莞市凯华电子有限公司
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Publication of WO2021213169A1 publication Critical patent/WO2021213169A1/zh

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    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03543—Mice or pucks
    • 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
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
    • G06F3/0383—Signal control means within the pointing device

Definitions

  • the invention relates to an optical encoder, in particular to a hand feeling switching mechanism of the optical encoder.
  • the mouse encoder is a device that compiles and converts signals or data into signal forms that can be used for communication, transmission and storage.
  • the basic principle of the mouse encoder is to use the internal switch to turn on with the scroll wheel movement, so that the conduction waveforms between the pins are different. When the operator slides the scroll wheel, the hand feeling will directly affect the user experience.
  • the purpose of the present invention is to provide an optical encoder hand feeling switching mechanism, which can realize free switching between hand feeling and no hand feeling when sliding the mouse wheel, high stability and accuracy of internal structure action, and simple operation.
  • a hand feeling switching mechanism of an optical encoder which is characterized in that it comprises:
  • a hand-feel switching component includes a switching element and an elastic lever structure located between the grating disc and the switching element. One end of the elastic lever structure is connected with the switching element, and the other end extends to the outside of the tooth position.
  • the elastic lever structure is mainly composed of a fixed rotating shaft and a torsion spring sleeved on the periphery of the fixed rotating shaft, wherein the torsion spring is mainly composed of a torsion spring body and one end of the torsion spring body. It consists of a connecting rod and an acting rod connected to the other end of the torsion spring body.
  • the torsion spring body is sleeved on the periphery of the fixed rotating shaft, the connecting rod is connected with the switching element, and the acting rod extends to the outside of the tooth position.
  • the switching member is a toggle member
  • the toggle member is mainly composed of a toggle seat and a toggle portion arranged on the toggle seat, wherein, on the side of the toggle seat An inclined dial groove is formed on the side, and the end of the connecting rod is movably inserted into the inclined dial groove.
  • the hand feel switching assembly further includes a housing in which there is a movable cavity and a sliding cavity, wherein the torsion spring is arranged in the movable cavity, and the fixed shaft is fixed to the movable cavity.
  • the toggle seat On the inner wall of the cavity; the toggle seat is slidably arranged in the sliding cavity, and a toggle opening for the toggle portion to pass through is opened on the shell.
  • a metal shrapnel is provided on the inner wall of the sliding cavity, and the metal shrapnel has a bent protrusion; on the side of the toggle seat close to the metal shrapnel, there is a At least two dial grooves matched with the folding protrusions.
  • the connecting rod and the acting rod are both L-shaped.
  • the beneficial effects of the present invention are: by combining the hand-feel switching assembly with the switching element and the elastic lever structure, and the grating disc with the tooth position, and combining the principle of the lever, operating the switching element can drive the other end of the elastic lever structure to contact the tooth Switch between the two states of position and leaving the tooth position.
  • the scroll wheel on the mouse is artificially rolled, the grating disk 1 rotates, and the tooth position of the grating disk acts on the other end of the elastic lever structure, combining elasticity
  • the elastic characteristic of the lever structure allows the other end of the elastic lever structure to move between several tooth positions to obtain a hand feeling; on the contrary, when it is switched to separate from the tooth position, there is no hand feeling when scrolling the mouse.
  • the free switching between hand and no hand feeling when sliding the roller is realized, the internal structure has high stability and accuracy of action, and the operation is simple.
  • Fig. 1 is a schematic diagram of the structure of the present invention in a state with a hand feeling
  • Figure 2 is an exploded view of part of the structure of the present invention
  • Figure 3 is a schematic diagram of the external structure of the present invention.
  • FIG. 4 is a schematic diagram of the structure of the combination of the toggle seat and the metal shrapnel in the present invention.
  • Fig. 5 is a schematic diagram of the structure of the present invention in a state without hand feeling.
  • an embodiment of the present invention provides a hand feel switching mechanism for an optical encoder, which is particularly suitable for mouse encoders, and includes:
  • a grating disk 1 has a plurality of tooth positions 11 formed on its outer side. Specifically, the plurality of tooth positions 11 are evenly distributed on the periphery of the grating disk 1; when the wheel on the mouse is manually rolled, the grating disk 1 rotates;
  • a hand feel switch assembly 2 including a switch 21 and an elastic lever structure 22 located between the grating disc 1 and the switch 21.
  • One end of the elastic lever structure 22 is connected with the switch 21 and the other end extends to the tooth position 11 Outside.
  • the switching element 21 acts on one end of the elastic lever structure 22, thereby driving the other end of the elastic lever structure 22 to switch between the two states of contacting the tooth position 11 and leaving the tooth position 11.
  • the wheel on the mouse When the other end of the elastic lever structure 22 is in contact with the tooth position 11, the wheel on the mouse is artificially rolled, and the grating disk 1 coaxial with the wheel rotates, and the tooth position 11 of the grating disk 1 acts on the other end of the elastic lever structure 22 to combine
  • the elastic characteristics of the elastic lever structure 22 enable the other end of the elastic lever structure 22 to move between several tooth positions 11, thereby producing a hand feeling; on the contrary, when the other end of the elastic lever structure 22 is driven to separate from the tooth position 11, when the mouse is rolled No feel.
  • the elastic lever structure 22 is mainly composed of a fixed rotating shaft 221 and a torsion spring 222 sleeved on the periphery of the fixed rotating shaft 221, wherein the torsion spring 222 is mainly composed of a torsion spring body 2221.
  • the fixed rotating shaft 221 serves as the fulcrum of the elastic lever structure 22, so that the torsion spring body 2221 of the torsion spring 222 can rotate around the fixed rotating shaft 221, and accordingly, the connecting rod 2222 and the acting rod 2223 can swing up and down.
  • the switching member 21 acts on the connecting rod 2222 to swing the connecting rod 2222 downwards, correspondingly, the acting rod 2223 swings upwards, thereby approaching and contacting the teeth 11 on the periphery of the grating disc 1 to achieve the purpose of having a hand feeling;
  • the switching member 21 acts on the connecting rod 2222 to swing the connecting rod 2222 upward, correspondingly, the acting rod 2223 swings downward to leave the tooth position 11 on the periphery of the grating disk 1 to achieve the goal of no hand feeling.
  • the connecting rod 2222 and the acting rod 2223 in this embodiment are both L-shaped, so that the end of the connecting rod 2222 can be connected to the switching member 21, and the acting rod 2223 can contact the tooth position 11 when it swings upward.
  • the switching member 21 is a toggle member, and the toggle member mainly consists of a toggle seat 211 and a toggle seat 211 provided
  • the toggle portion 212 is composed of an inclined toggle groove 2111 formed on the side of the toggle seat 211, and the end of the connecting rod 2222 is movably inserted into the inclined toggle groove 2111.
  • the toggle portion 212 is moved to move the toggle base 211, under the guidance of the tilt toggle groove 2111, the end of the connecting rod 2222 can slide in the tilt toggle groove 2111.
  • the tilting toggle groove 2111 is arranged obliquely, when the toggle base 211 moves in one direction, the end of the connecting rod 2222 is prompted to slide to the lowest position of the tilting toggle groove 2111, as shown in FIGS. 1 and 2, the connection If the rod 2222 swings downward, correspondingly, the rod 2223 swings upward.
  • the toggle base 211 moves in the opposite direction, the end of the connecting rod 2222 is prompted to slide to the highest position of the inclined toggle groove 2111, as shown in FIG. Therefore, under the guiding action of the inclined dial groove 2111, the connecting rod 2222 can swing upward and downward.
  • the acting rod 2223 can swing in the opposite direction to the connecting rod 2222.
  • the acting rod 2223 can touch the tooth position 11 when it swings upwards, and it leaves the tooth position 11 when it swings downwards, so that the acting rod 2223 can switch between the two states of contacting the tooth position 11 and leaving the tooth position 11. Switch.
  • the hand-feel switching assembly 2 of this embodiment further includes a housing 23 in which there are a movable cavity 231 and a sliding cavity 232, wherein the torsion spring 222 is disposed in In the movable cavity 231, and the fixed rotating shaft 221 is fixed on the inner wall of the movable cavity 231; the toggle seat 211 is slidably arranged in the sliding cavity 232, and the housing 23 is provided with a hole for the toggle portion 212 to pass through Once the opening 233 is toggled, when the switching operation is performed, the toggle portion 212 can be toggled along the toggle opening 233 and left and right, as shown in FIG. 3.
  • the housing 23 with the movable cavity 231 and the sliding cavity 232 can provide space for the swing action of the torsion spring 222 and the sliding action of the toggle seat 211, and can limit their movements to prevent displacement and other phenomena. As a result, the stability and accuracy of the entire action process are improved.
  • this embodiment adopts a gear design structure to achieve. Specifically, as shown in FIG. 4, a metal elastic piece 3 is provided on the inner wall of the sliding cavity 232, and There is a bending protrusion 31 on the 3; at least two dial grooves 2112 matching the bending protrusion 31 are formed on the side of the toggle seat 211 close to the metal elastic sheet 3. This embodiment For example, there are two toggle grooves 2112.
  • the bending protrusion 31 on the metal dome 3 moves and switches between the two toggle grooves 2112 of the toggle base 211, so that not only can the toggle be better and more convenient
  • the action is controlled to prevent the toggle base 211 from moving randomly, and it has a more hand-feeling when toggled.
  • Two toggle gears are obtained, one is a hand-feeling gear and the other is a non-hand-feeling gear.
  • the hand feel switching mechanism provided in this embodiment is particularly suitable for optical encoders and also used in mice. By operating the hand-feel switching mechanism, when the scroll wheel on the mouse is manually scrolled, two experiences of hand-feeling and no-feeling can be obtained.
  • the specific structure and principle of the optical encoder are the same as those of conventional optical encoders in the field.
  • the grating disc 1 in this embodiment is a grating disc in a conventional optical encoder in the art.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

一种光学编码器手感切换机构，包括一光栅盘（1），在其外侧边上形成有数个齿位（11）；一手感切换组件（2），其包括一切换件（21）、及位于光栅盘（1）与切换件（21）之间的一弹性杠杆结构（22），弹性杠杆结构（22）一端与切换件（21）连接，另一端延伸至齿位（11）外侧。光学编码器手感切换机构，可实现滑动鼠标滚轮时，有手感与无手感的自由切换，内部结构动作稳定性与准确度高，操作简单。

Description

一种光学编码器手感切换机构 技术领域
本发明涉及一种光学编码器，尤其涉及一种光学编码器手感切换机构。
背景技术
鼠标编码器是将信号或数据进行编制、转换为可用以通讯、传输和存储的信号形式的设备。鼠标编码器的基本原理是利用内部随滚轮运动开关导通，使各引脚之间的导通波形不同。在操作者滑动滚轮时，有无手感将直接影响用户体验。
然而，不同的使用者，需求不一样，有些用户喜欢滑动滚轮时有手感，而有些用户不喜欢。而在现有鼠标中，同一个鼠标上使用的鼠标编码器要么是有手感发生结构的，要么是没有手感发生结构的。因此，在使用者滚动鼠标滚轮时，要么有手感，要么没有手感。当用户有不同的需求时，同一个鼠标无法满足，即无法进行有手感与无手感切换。
发明内容
针对上述不足，本发明的目的在于提供一种光学编码器手感切换机构，可实现滑动鼠标滚轮时，有手感与无手感的自由切换，内部结构动作稳定性与准确度高，操作简单。
本发明为达到上述目的所采用的技术方案是：
一种光学编码器手感切换机构，其特征在于，包括：
一光栅盘，在其外侧边上形成有数个齿位；
一手感切换组件，其包括一切换件、及位于光栅盘与切换件之间的一弹性杠杆结构，该弹性杠杆结构一端与切换件连接，另一端延伸至齿位外侧。
作为本发明的进一步改进，所述弹性杠杆结构主要由一固定转轴、及套设于固定转轴外围的一扭簧组成，其中，该扭簧主要由一扭簧本体、连接于扭簧本体一端的一连接杆、及连接于扭簧本体另一端的一作用杆组成，该扭 簧本体套设于固定转轴外围，该连接杆与切换件连接，该作用杆延伸至齿位外侧。
作为本发明的进一步改进，所述切换件为一拨动件，该拨动件主要由一拨动座、及设置于拨动座上的一拨动部组成，其中，在该拨动座侧边上形成有一倾斜拨动槽，所述连接杆端部活动插入倾斜拨动槽内。
作为本发明的进一步改进，所述手感切换组件还包括一外壳，在该外壳内具有一活动腔与一滑动腔，其中，所述扭簧设置于活动腔内，且所述固定转轴固定于活动腔的内壁上；所述拨动座滑动设置于滑动腔内，且在该外壳上开设有供拨动部穿出的一拨动开口。
作为本发明的进一步改进，在所述滑动腔内壁上设置有一金属弹片，在该金属弹片上具有一弯折凸出部；在所述拨动座靠近金属弹片的一侧边上形成有与弯折凸出部相匹配的至少两个拨动凹槽。
作为本发明的进一步改进，所述连接杆与作用杆均呈L形。
本发明的有益效果为：通过带切换件和弹性杠杆结构的手感切换组件、与带齿位的光栅盘相结合，并结合杠杆原理，操作切换件，即可带动弹性杠杆结构另一端在接触齿位与离开齿位两种状态之间切换，当切换至与齿位接触时，人为滚动鼠标上的滚轮，光栅盘1随着转动，光栅盘的齿位作用于弹性杠杆结构另一端，结合弹性杠杆结构具有的弹性特性，使得弹性杠杆结构另一端在数个齿位之间移动，即可获得手感；反之，当切换至与齿位分离时，滚动鼠标时无手感。由此，实现滑动滚轮时有手感与无手感的自由切换，内部结构动作稳定性与准确度高，操作简单。
上述是发明技术方案的概述，以下结合附图与具体实施方式，对本发明做进一步说明。
附图说明
图1为本发明处于有手感状态下的结构示意图；
图2为本发明的部分结构分解图；
图3为本发明的外部结构示意图；
图4为本发明中拨动座与金属弹片相结合的结构示意图；
图5为本发明处于无手感状态下的结构示意图。
具体实施方式
为更进一步阐述本发明为达到预定目的所采取的技术手段及功效，以下结合附图及较佳实施例，对本发明的具体实施方式详细说明。
请参照图1，本发明实施例提供一种光学编码器手感切换机构，特别适用于鼠标编码器，其包括：
一光栅盘1，在其外侧边上形成有数个齿位11，具体的，数个齿位11均匀分布于光栅盘1外围；在人为滚动鼠标上的滚轮时，光栅盘1随着转动；
一手感切换组件2，其包括一切换件21、及位于光栅盘1与切换件21之间的一弹性杠杆结构22，该弹性杠杆结构22一端与切换件21连接，另一端延伸至齿位11外侧。结合杠杆原理，由切换件21作用于弹性杠杆结构22一端，从而带动弹性杠杆结构22另一端在接触齿位11与离开齿位11两种状态之间切换。当弹性杠杆结构22另一端与齿位11接触时，人为滚动鼠标上的滚轮，与滚轮同轴的光栅盘1随着转动，光栅盘1的齿位11作用于弹性杠杆结构22另一端，结合弹性杠杆结构22具有的弹性特性，使得弹性杠杆结构22另一端在数个齿位11之间移动，从而产生手感；反之，当带动弹性杠杆结构22另一端与齿位11分离时，滚动鼠标时无手感。
具体的，如图2所示，所述弹性杠杆结构22主要由一固定转轴221、及套设于固定转轴221外围的一扭簧222组成，其中，该扭簧222主要由一扭簧本体2221、连接于扭簧本体2221一端的一连接杆2222、及连接于扭簧本体2221另一端的一作用杆2223组成，该扭簧本体2221套设于固定转轴221外围，该连接杆2222与切换件21连接，该作用杆2223延伸至齿位11外侧。固定转轴221作为弹性杠杆结构22的支点，使得扭簧222的扭簧本体2221能够以固定转轴221为中心发生转动，则相应的，连接杆2222与作用杆2223可发生上下摆动动作。具体的，当切换件21作用于连接杆2222使连接杆2222向下摆动时，相应的，作用杆2223即向上摆动，从而靠近并接触光栅盘1外围的齿位11，达到有手感的目的；而当切换件21作用于连接杆2222使连接杆2222向上摆动时，相应的，作用杆2223即向下摆动，从而离开光栅盘 1外围的齿位11，达到无手感的目的。
具体的，本实施例所述连接杆2222与作用杆2223均呈L形，以便于连接杆2222端部能够与切换件21连接，作用杆2223上摆时能够接触到齿位11。
对于切换件21的具体结构，如图1与图2所示，所述切换件21为一拨动件，该拨动件主要由一拨动座211、及设置于拨动座211上的一拨动部212组成，其中，在该拨动座211侧边上形成有一倾斜拨动槽2111，所述连接杆2222端部活动插入倾斜拨动槽2111内。在需要进行有手感与无手感之间切换时，只要拨动拨动部212即可。在拨动拨动部212，使拨动座211移动时，在倾斜拨动槽2111的导引作用下，连接杆2222端部即可在倾斜拨动槽2111内滑动。而由于倾斜拨动槽2111为倾斜设置，因此，当拨动座211往一个方向移动，促使连接杆2222端部滑动至倾斜拨动槽2111最低位置时，如图1与图2所示，连接杆2222下摆，则相应的，作用杆2223上摆。当拨动座211往相反方向移动，促使连接杆2222端部滑动至倾斜拨动槽2111最高位置时，如图5所示，连接杆2222上摆，则相应的，作用杆2223下摆。因此，在倾斜拨动槽2111的导引作用下，连接杆2222可发生上摆与下摆动动作，结合杠杆原理，作用杆2223发生与连接杆2222相反方向的摆动动作。作用杆2223上摆时可接触齿位11，下摆时离开齿位11，由此，实现作用杆2223在接触齿位11与离开齿位11两种状态之间切换，实现有手感与无手感的切换。
对于切换件21与弹性杠杆结构22的安装，本实施例手感切换组件2还包括一外壳23，在该外壳23内具有一活动腔231与一滑动腔232，其中，所述扭簧222设置于活动腔231内，且所述固定转轴221固定于活动腔231的内壁上；所述拨动座211滑动设置于滑动腔232内，且在该外壳23上开设有供拨动部212穿出的一拨动开口233，在进行切换操作时，沿着拨动开口233，左右拨动拨动部212即可，如图3所示。通过具有活动腔231与滑动腔232的外壳23，即可为扭簧222的摆动动作与拨动座211的滑动动作提供空间，又可以对它们的动作进行限位，防止出现移位等现象，由此，提高整个动作过程的稳定性与准确度。
为了更方便于对拨动座211的拨动，本实施例采用挡位设计结构实现，具体的，如图4所示，在所述滑动腔232内壁上设置有一金属弹片3，在该金属弹片3上具有一弯折凸出部31；在所述拨动座211靠近金属弹片3的一侧边上形成有与弯折凸出部31相匹配的至少两个拨动凹槽2112，本实施例拨动凹槽2112为两个。在拨动拨动部212时，金属弹片3上的弯折凸出部31在拨动座211的两个拨动凹槽2112之间移动切换，由此，不但可以更好更方便的对拨动动作进行控制，防止拨动座211乱移动，而且拨动时更有手感，获得两个拨动挡位，一个为有手感挡位，一个为无手感挡位。
本实施例提供的手感切换机构，特别适用于光学编码器中，且应用于鼠标中。通过操作手感切换机构，在人为滚动鼠标上的滚轮时，即可获得有手感与无手感两种体验。而对于光学编码器的具体结构与原理，与本领域常规光学编码器相同。本实施例中的光栅盘1即为本领域常规光学编码器中的光栅盘。
以上所述，仅是本发明的较佳实施例而已，并非对本发明的技术范围作任何限制，故采用与本发明上述实施例相同或近似的技术特征，而得到的其他结构，均在本发明的保护范围之内。

Claims (6)

  1. 一种光学编码器手感切换机构，其特征在于，包括：
    一光栅盘，在其外侧边上形成有数个齿位；
    一手感切换组件，其包括一切换件、及位于光栅盘与切换件之间的一弹性杠杆结构，该弹性杠杆结构一端与切换件连接，另一端延伸至齿位外侧。
  2. 根据权利要求1所述的光学编码器手感切换机构，其特征在于，所述弹性杠杆结构主要由一固定转轴、及套设于固定转轴外围的一扭簧组成，其中，该扭簧主要由一扭簧本体、连接于扭簧本体一端的一连接杆、及连接于扭簧本体另一端的一作用杆组成，该扭簧本体套设于固定转轴外围，该连接杆与切换件连接，该作用杆延伸至齿位外侧。
  3. 根据权利要求2所述的光学编码器手感切换机构，其特征在于，所述切换件为一拨动件，该拨动件主要由一拨动座、及设置于拨动座上的一拨动部组成，其中，在该拨动座侧边上形成有一倾斜拨动槽，所述连接杆端部活动插入倾斜拨动槽内。
  4. 根据权利要求3所述的光学编码器手感切换机构，其特征在于，所述手感切换组件还包括一外壳，在该外壳内具有一活动腔与一滑动腔，其中，所述扭簧设置于活动腔内，且所述固定转轴固定于活动腔的内壁上；所述拨动座滑动设置于滑动腔内，且在该外壳上开设有供拨动部穿出的一拨动开口。
  5. 根据权利要求4所述的光学编码器手感切换机构，其特征在于，在所述滑动腔内壁上设置有一金属弹片，在该金属弹片上具有一弯折凸出部；在所述拨动座靠近金属弹片的一侧边上形成有与弯折凸出部相匹配的至少两个拨动凹槽。
  6. 根据权利要求2所述的光学编码器手感切换机构，其特征在于，所述连接杆与作用杆均呈L形。
PCT/CN2021/084865 2020-04-23 2021-04-01 一种光学编码器手感切换机构 WO2021213169A1 (zh)

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DE202005013491U1 (de) * 2005-08-25 2005-11-24 Kye Systems Corp., San Chung Eingabegerät mit einem Neigungswinkel
CN209728688U (zh) * 2019-04-17 2019-12-03 苏州达方电子有限公司 鼠标设备
CN110597403A (zh) * 2018-09-20 2019-12-20 苏州达方电子有限公司 输入装置
CN111427465A (zh) * 2020-04-23 2020-07-17 东莞市凯华电子有限公司 一种光学编码器手感切换机构
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CN209728688U (zh) * 2019-04-17 2019-12-03 苏州达方电子有限公司 鼠标设备
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