CN112382166A - Use method of multifunctional wireless laser pen - Google Patents

Use method of multifunctional wireless laser pen Download PDF

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Publication number
CN112382166A
CN112382166A CN202011284896.2A CN202011284896A CN112382166A CN 112382166 A CN112382166 A CN 112382166A CN 202011284896 A CN202011284896 A CN 202011284896A CN 112382166 A CN112382166 A CN 112382166A
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CN
China
Prior art keywords
button
laser
shell
pen
switch
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202011284896.2A
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Chinese (zh)
Inventor
张荣刚
陈小华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujian Fuqing Longhua Secondary Vocational School
Fujian Normal University
Original Assignee
Fujian Fuqing Longhua Secondary Vocational School
Fujian Normal University
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.)
Filing date
Publication date
Application filed by Fujian Fuqing Longhua Secondary Vocational School, Fujian Normal University filed Critical Fujian Fuqing Longhua Secondary Vocational School
Priority to CN202011284896.2A priority Critical patent/CN112382166A/en
Publication of CN112382166A publication Critical patent/CN112382166A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B17/00—Teaching reading
    • G09B17/02—Line indicators or other guides or masks
    • 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
    • G06F3/03545—Pens or stylus
    • 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
    • G06F3/0386—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry for light pen

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Position Input By Displaying (AREA)

Abstract

The invention belongs to the field of teaching appliance equipment, and particularly relates to a using method of a multifunctional wireless laser pen, which comprises a first shell and a computer end, the first shell is provided with a first button, a second button, a third button, a first switch and a laser lamp, a control chip, a power supply device and a wireless device are arranged in the first shell, one end of each of the first button, the second button, the third button and the laser lamp is connected with one end of the control chip, the first button, the second button and the third button are arranged on the surface of the first shell, the first button and the second button are arranged on two sides of the third button, the height of the first button and the height of the second button are lower than that of the whole first shell and the third button, so that the condition that the page of the document is turned around in a messy way due to mistaken touch can be avoided, the screw hole that matches through setting up control chip, power supply unit, wireless device and whiteboard pen in first casing is favorable to improving the functionality of laser pen.

Description

Use method of multifunctional wireless laser pen
Technical Field
The invention belongs to the field of teaching aid equipment, and particularly relates to a using method of a multifunctional wireless laser pen.
Background
With the popularization of multimedia equipment, more and more people choose to use the wireless laser pen for explanation in various training, meeting and teaching processes; however, the existing laser pen is still not good enough, for example, the keys are too many, and a user needs to frequently check the position of a function key to be pressed when using the keys, which causes inconvenience in operation; some laser pens have too simple functions, only have functions of page turning up and down, laser and the like, and cannot meet the requirements of users; the keys of the laser pen are distributed together, so that a user can not touch the screen keys at times when using the laser pen, the played page is changed, and the screen projection effect is influenced.
Disclosure of Invention
Technical problem to be solved
In order to solve the problems in the prior art, the invention provides a multifunctional wireless laser pen using method with multiple functions and good using effect.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
a using method of a multifunctional wireless laser pen comprises a first shell and a computer end, wherein a first button, a second button, a third button, a first switch and a laser lamp are arranged on the first shell, a control chip, a power supply device and a wireless device are arranged in the first shell, one ends of the first button, the second button, the third button and the laser lamp are all connected with one end of the control chip, the power supply device and the wireless device are all connected with the other end of the control chip, one end of the first switch is connected with the wireless device, the other end of the first switch is connected with the laser lamp, the third button is connected with a first switch, the wireless device is connected with the computer end through a wireless signal, the first button, the second button and the third button are arranged on the same surface of the first shell, the first button and the second button are arranged on two sides of the third button, the heights of the first button and the second button are lower than that of the surface of the whole first shell and the third button, a threaded hole is formed in the bottom of the first shell, a screw with a rubber joint is arranged in the threaded hole, the screw with the rubber joint is matched with the threaded hole, and the first switch is arranged on the side face of the first shell;
the laser can be emitted by pressing the third button; then the up-down turning buttons are arranged at the left side and the right side of the third button, the left button turns the page backwards, the right button turns the page forwards,
the screw is screwed into the laser pen, the rubber is pressed into the bottom of the white board pen, and the two pens can be well combined together; a wave band switch is additionally arranged on the right side edge of the laser pen; when the switch is pushed to the open position by a finger, the laser pen has the function of marking; moving the laser point to a place needing key marking, and then pressing a laser emission button for a long time to move back and forth to mark key information; if the scribing function is not needed, the wave band switch is switched to a closed state, and the laser pen returns to the normal movement but does not display the scribing function; the control chip receives and feeds back signals through the wireless device in the first shell and the computer end, and the signals are convenient to process in time.
In the use method of the multifunctional wireless laser pen, the heights of the first button and the second button are lower than the height of the surface of the first shell.
In the use method of the multifunctional wireless laser pen, the control chip adopts an MCU chip.
In the use method of the multifunctional wireless laser pen, the surface of the first shell is provided with anti-skid grains.
In the use method of the multifunctional wireless laser pen, the first shell is provided with a sucker on the bottom surface opposite to the first button, the second button and the third button.
In the use method of the multifunctional wireless laser pen, the first switch adopts a band switch structure.
In the use method of the multifunctional wireless laser pen, the first button is an upturning button, the second button is a downturning button, and the third button is a laser emitting button.
The using method of the multifunctional wireless laser pen further comprises a white board pen, and the other end of the white board pen is matched with a screw with a rubber joint.
(III) advantageous effects
The invention has the beneficial effects that: through set up first button, second button and third button on the surface at first casing, first button and second button set up in the both sides of third button, and the surface and the third button that highly are less than whole laser pen of first button and second button are favorable to avoiding the mistake to touch and cause the document to turn over the page in disorder around, through the screw hole that sets up control chip, power supply unit, wireless device and whiteboard pen in first casing and match, are favorable to improving the functionality of laser pen.
Drawings
FIG. 1 is a front view of a method of using the multifunctional wireless laser pen of the present invention;
FIG. 2 is a side view of the method of using the multifunctional wireless laser pen of the present invention;
FIG. 3 is a schematic structural diagram of a method for using the multifunctional wireless laser pen according to the present invention;
FIG. 4 is a bottom view of the method of using the multifunctional wireless laser pen of the present invention;
FIG. 5 is a schematic view of the internal structure of the multifunctional wireless laser pen according to the present invention.
[ description of reference ]
1: a first housing;
2: a computer terminal;
3: a first button;
4: a second button;
5: a third button;
6: a first switch;
7: a laser light;
8: a control chip;
9: a power supply device;
10: a wireless device;
11: a threaded hole;
12: a screw with a rubber joint;
13: anti-skid lines;
14: a suction cup;
15: a white board pen.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
The most key concept of the invention is as follows: the first button, the second button and the third button are arranged on the surface of the first shell, the first button and the second button are arranged on two sides of the third button, the height of the first button and the height of the second button are lower than that of the third button, and the first shell is internally provided with a control chip, a power supply device and a wireless device, and a screw hole matched with the whiteboard pen.
Referring to fig. 1 to 5, a method for using a multifunctional wireless laser pen,
the multifunctional wireless laser pen comprises a first shell and a computer end, wherein a first button, a second button, a third button, a first switch and a laser lamp are arranged on the first shell, a control chip, a power supply device and a wireless device are arranged in the first shell, one ends of the first button, the second button, the third button and the laser lamp are all connected with one end of the control chip, the power supply device and the wireless device are all connected with the other end of the control chip, one end of the first switch is connected with the wireless device, the other end of the first switch is connected with the laser lamp, the third button is connected with the first switch, the wireless device is connected with the computer end through a wireless signal, the first button, the second button and the third button are arranged on the same surface of the first shell, and the first button and the second button are arranged on two sides of the third button, the heights of the first button and the second button are lower than that of the surface of the whole first shell and the third button, a threaded hole is formed in the bottom of the first shell, a screw with a rubber joint is arranged in the threaded hole, the screw with the rubber joint is matched with the threaded hole, and the first switch is arranged on the side face of the first shell;
the laser can be emitted by pressing the third button; then the up-down turning buttons are arranged at the left side and the right side of the third button, the left button turns the page backwards, the right button turns the page forwards,
the screw is screwed into the laser pen, the rubber is pressed into the bottom of the white board pen, and the two pens can be well combined together; a wave band switch is additionally arranged on the right side edge of the laser pen; when the switch is pushed to the open position by a finger, the laser pen has the function of marking; moving the laser point to a place needing key marking, and then pressing a laser emission button for a long time to move back and forth to mark key information; if the scribing function is not needed, the wave band switch is switched to a closed state, and the laser pen returns to the normal movement but does not display the scribing function; the control chip receives and feeds back signals through the wireless device in the first shell and the computer end, and the signals are convenient to process in time.
From the above description, the beneficial effects of the present invention are: through set up first button, second button and third button on the surface at first casing, first button and second button set up in the both sides of third button, and the surface and the third button that highly are less than whole laser pen of first button and second button are favorable to avoiding the mistake to touch and cause the document to turn over the page in disorder around, through the screw hole that sets up control chip, power supply unit, wireless device and whiteboard pen in first casing and match, are favorable to improving the functionality of laser pen.
Drawings
Referring to fig. 1 to 5, a first embodiment of the present invention is:
a using method of a multifunctional wireless laser pen comprises a first shell 1 and a computer end 2, wherein a first button 3, a second button 4, a third button 5, a first switch 6 and a laser lamp 7 are arranged on the first shell 1, a control chip 8, a power supply device 9 and a wireless device 10 are arranged in the first shell 1, one ends of the first button 3, the second button 4, the third button 5 and the laser lamp 7 are all connected with one end of the control chip 8, the power supply device 9 and the wireless device 10 are all connected with the other end of the control chip 8, one end of the first switch 6 is connected with the wireless device 10, the other end of the first switch 6 is connected with the laser lamp 7, the third button 5 is connected with the first switch 6, the wireless device 10 is connected with the computer end 2 through a wireless signal, the first button 3, the second button 4 and the third button 5 are arranged on the same surface of the first shell 1, first button 3 and second button 4 set up in the both sides of third button 5, and first button 3 and second button 4 highly be less than whole first casing 1 and third button 5, the bottom of first casing 1 is equipped with screw hole 11, be equipped with the screw 12 that has rubber joint in the screw hole 11, screw 12 and the screw hole 11 looks adaptation that has rubber joint, first switch 6 sets up in the side of first casing 1.
The first button 3 and the second button 4 have a height lower than the height of the surface of the first housing 1.
The height of the first button 3 and the second button 4 can be lower than that of the surface of the first shell 1, so that the situation that the document is randomly turned back and forth due to mistaken touch can be further avoided.
The control chip 8 adopts an MCU chip.
The MCU chip is adopted as the control chip 8, so that the signal receiving and feedback efficiency is improved.
The surface of the first shell 1 is provided with anti-skid grains 13.
The anti-slip lines 13 are arranged on the surface of the first shell 1, so that the phenomenon of hand release is avoided.
And a sucker 14 is arranged on the bottom surface of the first shell 1 opposite to the first button 3, the second button 4 and the third button 5.
Through be equipped with sucking disc 14 on the surface that first casing 1 and first button 3, second button 4 and third button 5 set up relatively, be favorable to placing multi-functional laser pen.
The first switch 6 adopts a wave band switch structure, a power switch and function switching.
The first switch 6 is in a band switch structure, so that the starting, starting or closing of the marking function is facilitated.
The first button 3 is an upturning button, the second button 4 is a downturning button, and the third button 5 is a laser emission button.
Through being the button of turning up at first button 3, second button 4 is the button of turning down, third button 5 is the laser emission button, is favorable to improving the functionality of device.
The whiteboard pen 15 is further included, and the other end of the whiteboard pen 15 is matched with the screw 12 with a rubber joint.
Through still including whiteboard pen 15, whiteboard pen 15's the other end and rubber screw 12 looks adaptation are favorable to improving the suitability of multi-functional laser pen.
Firstly, the laser emission button is arranged to be in the same plane with the first shell 1 on the laser pen, and when the laser pen is used, the laser can be emitted by only holding the laser pen by hand and pressing the third button 5; then the up-down turning buttons are arranged at the left side and the right side of the third button 5, the left side button is used for turning pages backwards, the right side button is used for turning pages forwards, the two buttons are arranged at positions lower than the plane of the upper first shell 1 of the laser pen and slightly sink, when the multifunctional wireless laser pen is used, a user needs to turn pages forwards and backwards, only the thumb or the forefinger of the user needs to be moved to the sinking positions at the two sides of the using method of the multifunctional wireless laser pen, if the moved positions have no sense of concavity, the button to be pressed is definitely not the front-back turning button, the user can correspondingly move the finger outwards to a point, after the sense of concavity, the user can accurately judge whether the button is to be pressed for turning pages backwards or forwards, and the control over the demonstration document can be accurately realized by pressing the corresponding button according to the actual needs; if a user uses the device and during explanation, if the fingers, particularly the thumbs, move by mistake and touch the keys, the device is only the keys emitted by the laser, and only forwards laser is emitted at most, so that the current page of the demonstration document is not changed, and the problem that the page of the document is turned around by mistake is well solved.
Some lecturers need to explain with the help of a white board besides using a screen, but the current laser pen cannot write on the white board and needs to take a white board pen 15 independently, at this time, a user needs to change the laser pen to the other hand first and then takes the white board pen 15 to write on the white board, the user is inconvenient to operate because the user may have a microphone on the hand and takes three articles, even if the user does not take the microphone, takes the laser pen with one hand and takes the white board pen with the other hand, because the user has only one dominant hand, two hands need to be changed frequently and are inconvenient to use, the use method of the multifunctional wireless laser pen can be realized by only taking one pen, in order to increase the use method universality of the multifunctional wireless laser pen, the threaded hole 11 with the diameter of M2 and the rubber screw 12 matched with the threaded hole are additionally arranged at the bottom of the laser pen, the diameter of the rubber is matched with the bottom groove of the whiteboard pen 15; when in use, the two pens can be well combined together only by screwing the screw into the laser pen and pressing the rubber glue into the bottom of the whiteboard pen 15; when the laser pen is needed, the laser pen can be held by hand, when the whiteboard pen 15 is used, the pen only needs to be turned over, and because only one hand is needed, the operation of a presenter during explanation is more convenient and more leisurely; in order to facilitate a user to mark a key position, a band switch is additionally arranged on the right side edge of a laser pen; when a user dials the switch to the on position by using a finger, the laser pen has a line drawing function; the user moves the laser point to a place needing key marking, then presses the laser emission button for a long time, and the key information can be marked by moving back and forth. If the user does not turn off the band switch, the laser point is always in the scribing function; if the user does not need the scribing function, the band switch can be switched to the off state, and the laser pen returns to the normal movement but does not display the scribing function; the control chip 8 can receive and feed back signals through the wireless device 10 and the computer terminal 2 in the first housing 1, so as to process the signals in time.
In summary, according to the using method of the multifunctional wireless laser pen provided by the invention, the first button, the second button and the third button are arranged on the surface of the first shell, the first button and the second button are arranged on two sides of the third button, the first button and the second button are lower than the third button in height, so that the situation that the page of the document is randomly turned back and forth due to mistaken touch is avoided, and the control chip, the power supply device and the wireless device are arranged in the first shell, so that the functionality of the laser pen is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.

Claims (8)

1. A using method of a multifunctional wireless laser pen is characterized in that the multifunctional wireless laser pen comprises a first shell and a computer end, a first button, a second button, a third button, a first switch and a laser lamp are arranged on the first shell, a control chip, a power supply device and a wireless device are arranged in the first shell, one ends of the first button, the second button, the third button and the laser lamp are all connected with one end of the control chip, the power supply device and the wireless device are all connected with the other end of the control chip, one end of the first switch is connected with the wireless device, the other end of the first switch is connected with the laser lamp, the third button is connected with the first switch, the wireless device is connected with the computer end through a wireless signal, the first button, the second button and the third button are arranged on the same surface of the first shell, the first button and the second button are arranged on two sides of the third button, the heights of the first button and the second button are lower than that of the surface of the whole first shell and the third button, a threaded hole is formed in the bottom of the first shell, a screw with a rubber joint is arranged in the threaded hole, the screw with the rubber joint is matched with the threaded hole, and the first switch is arranged on the side face of the first shell;
the laser can be emitted by pressing the third button; then, the up-down turning buttons are arranged on the left side and the right side of the third button, the left button turns pages backwards, and the right button turns pages forwards;
the screw is screwed into the laser pen, the rubber is pressed into the bottom of the white board pen, and the two pens can be well combined together; a wave band switch is additionally arranged on the right side edge of the laser pen; when the switch is pushed to the open position by a finger, the laser pen has the function of marking; moving the laser point to a place needing key marking, and then pressing a laser emission button for a long time to move back and forth to mark key information; if the scribing function is not needed, the wave band switch is switched to a closed state, and the laser pen returns to the normal movement but does not display the scribing function; the control chip receives and feeds back signals through the wireless device in the first shell and the computer end, and the signals are convenient to process in time.
2. The method of using a multifunctional wireless laser pointer as claimed in claim 1, wherein the first button and the second button have a height lower than a height of the first housing surface.
3. The method for using the multifunctional wireless laser pen as claimed in claim 1, wherein the control chip is an MCU chip.
4. The method for using the multifunctional wireless laser pen as claimed in claim 1, wherein the surface of the first shell is provided with anti-slip lines.
5. The method for using a multifunctional wireless laser pen as claimed in claim 1, wherein a suction cup is disposed on a bottom surface of the first housing disposed opposite to the first button, the second button and the third button.
6. The method of claim 1, wherein the first switch is a band switch structure.
7. The method of claim 1, wherein the first button is a flip-up button, the second button is a flip-down button, and the third button is a laser firing button.
8. The method for using the multifunctional wireless laser pen as claimed in claim 1, further comprising a white board pen, wherein the other end of the white board pen is matched with a screw with a rubber joint.
CN202011284896.2A 2020-11-17 2020-11-17 Use method of multifunctional wireless laser pen Pending CN112382166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011284896.2A CN112382166A (en) 2020-11-17 2020-11-17 Use method of multifunctional wireless laser pen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011284896.2A CN112382166A (en) 2020-11-17 2020-11-17 Use method of multifunctional wireless laser pen

Publications (1)

Publication Number Publication Date
CN112382166A true CN112382166A (en) 2021-02-19

Family

ID=74584887

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011284896.2A Pending CN112382166A (en) 2020-11-17 2020-11-17 Use method of multifunctional wireless laser pen

Country Status (1)

Country Link
CN (1) CN112382166A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201936473U (en) * 2010-12-15 2011-08-17 大连职业技术学院 Laser pen with Bluetooth transmitting and white board writing functions
CN202235135U (en) * 2011-09-22 2012-05-30 苏州路之遥科技股份有限公司 Anti-misoperation toilet lid
CN202904933U (en) * 2012-09-08 2013-04-24 浙江师范大学 Markable laser pointer
CN103853353A (en) * 2012-12-06 2014-06-11 鸿富锦精密工业（深圳）有限公司 Image projection system
CN204155441U (en) * 2014-06-20 2015-02-11 上海电机学院 Multifunctional projector remote controller
CN104732841A (en) * 2013-12-21 2015-06-24 杨素娥 Multi-functional pen for teacher
CN205983985U (en) * 2016-06-08 2017-02-22 张银虎 Multi -functional laser turns over page or leaf pen
CN208706091U (en) * 2018-01-16 2019-04-05 温州市文泰笔业有限公司 Multifunction electronic Pen for turning page
CN209290017U (en) * 2018-11-05 2019-08-23 绥化学院 Combined pen
CN110362215A (en) * 2018-04-01 2019-10-22 西北农林科技大学 A kind of lantern slide remote control pen crossed
CN210607018U (en) * 2019-11-19 2020-05-22 北京中航万通机电工程股份有限公司 Emergency power-off controller for mistaken touch

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201936473U (en) * 2010-12-15 2011-08-17 大连职业技术学院 Laser pen with Bluetooth transmitting and white board writing functions
CN202235135U (en) * 2011-09-22 2012-05-30 苏州路之遥科技股份有限公司 Anti-misoperation toilet lid
CN202904933U (en) * 2012-09-08 2013-04-24 浙江师范大学 Markable laser pointer
CN103853353A (en) * 2012-12-06 2014-06-11 鸿富锦精密工业（深圳）有限公司 Image projection system
US20140160018A1 (en) * 2012-12-06 2014-06-12 Hon Hai Precision Industry Co., Ltd. Projector system
CN104732841A (en) * 2013-12-21 2015-06-24 杨素娥 Multi-functional pen for teacher
CN204155441U (en) * 2014-06-20 2015-02-11 上海电机学院 Multifunctional projector remote controller
CN205983985U (en) * 2016-06-08 2017-02-22 张银虎 Multi -functional laser turns over page or leaf pen
CN208706091U (en) * 2018-01-16 2019-04-05 温州市文泰笔业有限公司 Multifunction electronic Pen for turning page
CN110362215A (en) * 2018-04-01 2019-10-22 西北农林科技大学 A kind of lantern slide remote control pen crossed
CN209290017U (en) * 2018-11-05 2019-08-23 绥化学院 Combined pen
CN210607018U (en) * 2019-11-19 2020-05-22 北京中航万通机电工程股份有限公司 Emergency power-off controller for mistaken touch

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Application publication date: 20210219