CN116243807A - Light-sensitive electronic touch pen - Google Patents

Light-sensitive electronic touch pen Download PDF

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Publication number
CN116243807A
CN116243807A CN202211091325.6A CN202211091325A CN116243807A CN 116243807 A CN116243807 A CN 116243807A CN 202211091325 A CN202211091325 A CN 202211091325A CN 116243807 A CN116243807 A CN 116243807A
Authority
CN
China
Prior art keywords
lever
pressure
optical signal
signal receiving
pen
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
CN202211091325.6A
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Chinese (zh)
Inventor
黄启录
卢青
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.)
Shenzhen Zhicheng Lichuang Technology Co ltd
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Shenzhen Zhicheng Lichuang Technology Co ltd
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 Shenzhen Zhicheng Lichuang Technology Co ltd filed Critical Shenzhen Zhicheng Lichuang Technology Co ltd
Priority to CN202211091325.6A priority Critical patent/CN116243807A/en
Publication of CN116243807A publication Critical patent/CN116243807A/en
Pending legal-status Critical Current

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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
    • G06F3/03545—Pens or stylus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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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

The embodiment of the invention discloses a light-sensitive electronic touch pen, which comprises a pen holder, a pen core, a pen point cap and a main support, wherein a friction sleeve for sleeving the pen core is arranged in the pen holder; one end of the lever is correspondingly provided with an optical signal receiving and transmitting sensor, the optical signal receiving and transmitting sensor comprises an optical signal transmitting end and an optical signal receiving end, and the optical signal transmitting end and the optical signal receiving end are correspondingly arranged on two sides of one end of the lever; the other end of the lever contacts the friction sleeve when writing. The invention uses the friction sleeve to transfer the writing pressure of the pen core, uses the two optical signal receiving and transmitting sensors to detect and calculate the writing pressure, can adapt to pen cores with different lengths, is convenient for users to replace, and has simple structure, convenient assembly and low cost.

Description

Light-sensitive electronic touch pen
Technical Field
The invention relates to the technical field of electronic pens, in particular to a light-sensitive electronic touch pen.
Background
The existing electronic stylus is more and more intelligent, the existing electronic stylus can not only use a common ball-point pen to write normally on the code spreading paper, but also can use a camera in the pen to shoot the track of the pen point, so as to synchronously process the track into an electronic document, and meanwhile, the pressure contacted by the pen point is transferred to a pressure element in the electronic stylus. However, the existing electronic stylus generally collects the pressure of the nib contact in two ways:
1. the pressure element is correspondingly arranged at the tail part of the pen core so as to detect the writing pressure transmitted from the tail part of the pen core. However, this approach requires a length of the cartridge that cannot be detected if the user replaces a cartridge of a different length.
2. The pressure element is correspondingly arranged at the front end of the pen core so as to detect the writing pressure transmitted by the convex ring at the front end of the pen core. However, this way can lead to the front-end device of the electronic stylus increasing, the structure is complex, and then the electronic stylus is very bulky, unattractive and affects the writing of the user.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide the light-sensitive electronic touch pen, so that the structure is simplified, and the pen can be suitable for pen cores with different lengths.
In order to solve the technical problems, the embodiment of the invention provides a light-sensitive electronic touch pen, which comprises a pen holder, a pen core, a pen point cap and a main support arranged in the pen holder, wherein a friction sleeve used for being sleeved on the pen core is arranged in the pen holder, a salient point is arranged on the inner wall of the friction sleeve, a pre-pressing spring which applies pre-pressing force to the friction sleeve is correspondingly arranged at the tail end of the friction sleeve, and a lever which rotates around a rotating shaft is arranged on the main support; one end of the lever is correspondingly provided with an optical signal receiving and transmitting sensor, the optical signal receiving and transmitting sensor comprises an optical signal transmitting end and an optical signal receiving end, and the optical signal transmitting end and the optical signal receiving end are correspondingly arranged on two sides of one end of the lever; the other end of the lever contacts the friction sleeve when writing.
Further, the pressure exerted by the pre-pressing spring on the friction sleeve is less than the maximum static friction force between the pen core and the friction sleeve.
Further, a limiting table for limiting is arranged on the main support corresponding to the preset distance of the front end of the friction sleeve.
Further, the main support is provided with a pressure-bearing seat corresponding to the lever, the pressure-bearing seat is provided with a pressure-bearing rod in a penetrating way, the pressure-bearing rod is sleeved with a pressure-bearing spring, and the top of the pressure-bearing rod is propped against the lever when writing by the pressure-bearing spring, so that the lever is always clung to the friction sleeve when writing, and the shaking and the shifting of the lever are prevented.
Further, the tail end of the pressure-bearing rod is convexly provided with a limit buckle matched with the pressure-bearing seat.
Further, the stylus calculates a deflection stroke of the lever according to the reduced light signal receiving amount detected by the light signal receiving and transmitting sensor, and further calculates writing pressure; the deflection stroke calculation formula of the lever is as follows:
L=L wide width of *（Φ-Φ Measuring ）/Φ；
Wherein L is the deflection travel of the lever, L Wide width of A width of light emitted by the sensor for transmitting and receiving the optical signal; phi is the light signal receiving amount detected by the light signal receiving and transmitting sensor when the light emitted by the light signal receiving and transmitting sensor is not shielded by the lever; phi Measuring The optical signal receiving quantity detected by the optical signal receiving and transmitting sensor during writing;
the writing pressure f=l×k, k being a constant.
The beneficial effects of the invention are as follows: the invention uses the friction sleeve to transfer the writing pressure of the pen core, uses the two optical signal receiving and transmitting sensors to detect and calculate the writing pressure, can adapt to pen cores with different lengths, is convenient for users to replace, and has simple structure, convenient assembly and low cost.
Drawings
Fig. 1 is a front view of a light-sensing electronic stylus according to an embodiment of the invention.
Fig. 2 is a cross-sectional view at A-A in fig. 1.
Fig. 3 is a cross-sectional view at C-C in fig. 2.
Fig. 4 is a structural diagram of the light-sensing electronic stylus according to the embodiment of the present invention when the pen core is not loaded.
Fig. 5 is a cross-sectional view at B-B in fig. 4.
Fig. 6 is an internal structural diagram of a light-sensing electronic stylus according to an embodiment of the present invention.
Fig. 7 is a perspective view of a friction sleeve according to an embodiment of the present invention.
Fig. 8 is a bottom view of a friction sleeve according to an embodiment of the present invention.
Fig. 9 is a perspective view of a lever according to an embodiment of the present invention.
Description of the reference numerals
The pen comprises a pen holder 10, a friction sleeve 11, a convex point 12, a pre-pressing spring 13, a pressure-bearing seat 14, a pressure-bearing spring 15, a limit buckle 16, a sinking platform 17, a pressure-bearing rod 18, a pen core 20, a pen point cap 30, a main support 40, a rotating shaft 41, a lever 42, an optical signal receiving and transmitting sensor 43 and a limit platform 44.
Detailed Description
It should be noted that, without conflict, the embodiments and features of the embodiments in the present application may be combined with each other, and the present invention will be further described in detail with reference to the drawings and the specific embodiments.
In the embodiment of the present invention, if there is a directional indication (such as up, down, left, right, front, and rear … …) only for explaining the relative positional relationship, movement condition, etc. between the components in a specific posture (as shown in the drawings), if the specific posture is changed, the directional indication is correspondingly changed.
In addition, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implying an indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.
Referring to fig. 1 to 9, the light-sensing electronic stylus according to the embodiment of the invention includes a pen shaft, a pen core, a pen tip cap, and a main support disposed in the pen shaft.
The pen holder is internally provided with a friction sleeve which is sleeved on the pen core, and the inner wall of the friction sleeve is provided with protruding points. The inner diameter of the friction sleeve is larger than the outer diameter of the pen core, and the inner diameter of the salient point is smaller than the outer diameter of the pen core. The end of the friction sleeve is correspondingly provided with a pre-pressing spring which applies pre-pressing force to the friction sleeve. The main support is provided with a lever which rotates around a rotating shaft and is used for enlarging or reducing the movement stroke of the pen refill, two sides of one end of the lever are correspondingly provided with optical signal receiving and transmitting sensors, and the other end of the lever is contacted with the friction sleeve during writing. The optical signal transceiver sensor can adopt the existing infrared optical signal transceiver sensor and comprises an optical signal transmitting end and an optical signal receiving end. When the lever deflects, light emitted by the light signal emitting end can be shielded, and the light signal receiving quantity detected by the receiving end is influenced. The pen holder is internally integrated with a main board, and the main board is provided with an MCU (micro control unit) and the like (the part is of an existing structure), and the MCU is connected with an optical signal receiving and transmitting sensor.
As an embodiment, the pressure exerted by the pre-compression spring on the friction sleeve is less than the maximum static friction force between the pen core and the friction sleeve.
As one implementation mode, a limiting table for limiting is arranged on the main support corresponding to the preset distance of the front end of the friction sleeve.
As one implementation mode, the main support is provided with a pressure-bearing seat corresponding to the lever, the pressure-bearing seat is provided with a pressure-bearing rod in a penetrating way, the pressure-bearing rod is sleeved with a pressure-bearing spring, and the pressure-bearing spring enables the top of the pressure-bearing rod to be abutted against the lever when writing, so that the lever is always clung to the friction sleeve when writing, and the shaking and deflection of the lever are prevented. In the concrete implementation, the part of the structure can also be realized by adopting a torsion spring instead.
As one implementation mode, the tail end of the pressure-bearing rod is convexly provided with a limit buckle matched with the pressure-bearing seat.
As one embodiment, the stylus pen calculates a deflection stroke of the lever according to the light signal receiving amount reduced by the light signal receiving/transmitting sensor, and further calculates writing pressure. The deflection of the lever to the side can correspondingly shield the light emitted by the light signal emitting end of the side, so that the deflection stroke of the lever can be calculated according to the reduced light signal receiving quantity of the side light signal receiving end (the voltage at two ends of the light signal receiving end can change when the received light signal is reduced), and the detection of the light signal receiving quantity can be realized by detecting the voltage change, which belongs to the prior art).
The deflection stroke calculation formula of the lever is as follows:
L=L wide width of *（Φ-Φ Measuring ）/Φ；
Wherein L is the deflection travel of the lever, L Wide width of The width of the light emitted by the light signal emitting end; phi is the light signal receiving quantity detected by the light signal receiving end when the light emitted by the light signal emitting end is not shielded by the lever; phi Measuring Is the light signal receiving quantity detected by the light signal receiving end during writing.
The writing pressure f=l×k, k being a constant, k being experimentally measured.
The working principle of the invention is as follows:
when in assembly, the lever is assembled on the main bracket to form a revolute pair; and then the friction sleeve is filled and the spring is preloaded. The pre-pressing spring is used for propping against the friction sleeve, so that the friction sleeve is tightly attached to the main support (in the axial direction), and the lever contact is tightly attached to the friction sleeve. When the lever rotates, the amount of reception of the optical signal is affected. Under the action of the pre-pressing spring, the friction sleeve is tightly attached to the main support (in the axial direction), the pressure-bearing rod seals the pressure-bearing spring in the pressure-bearing seat through the buckling position of the limit buckle, and the pressure-bearing spring is in a free state and is not compressed. The bearing rod and the lever surface have a small gap A, and the gap between the bearing rod and the main bracket is B.
The ball-point pen refill is pressed in, the friction sleeve is provided with protruding points which are in interference with the periphery of the refill, when the refill is inserted into the friction sleeve, the maximum static friction force between the refill and the friction sleeve is set to be F1, the pressure of the friction sleeve to the lever is N, the pressure of the pressure-bearing spring is F2 before the lever is tightly attached to the main support, and F1 is set to be more than N, and N=F2 (L2/L1). When the refill is inserted into the friction sleeve, the displacement of the friction sleeve is S1, the displacement of the pressure-bearing rod is S2, s2=s1 (L2/L1), and the displacement of the pressure-bearing rod is amplified.
Therefore, in the process of inserting the pen core, the lever is tightly attached to the main support along with the increasing friction force between the pen core and the friction sleeve until the pen core is blocked by the sinking table (the existing structure) at the front end of the pen holder.
The refill is released, the pre-pressing spring bounces the friction sleeve, the pressure-bearing spring bounces the pressure-bearing rod, the lever is reset, no acting force is generated between the lever and the pressure-bearing rod, no acting force is generated between the lever and the friction sleeve, and in the process, the refill and the friction sleeve have no relative position change. The friction sleeve and the main support have no gap, and the pen core and the pen holder front end sinking table have gap.
The pen point cap is screwed on, and a clearance C is reserved between the pen point cap and the pen core so as to avoid resetting errors.
When the pen writes on paper, the pen refill is stressed and gradually contracts inwards. During this process, there is no relative change in the position of the friction sleeve and the cartridge.
The lever rotates, the shielding amount of the lever to the light signal also changes, and the signal change is processed by the MCU of the main board.
The writing pressure is increased until the refill step is tightly attached to the sinking table at the front end of the pen holder, and at the moment, the pressure-bearing rod is tightly attached to the main support. During this process, there is no relative change in the position of the friction sleeve and the cartridge.
And (3) lifting the pen, and not applying pressure to the pen point, so that the pre-pressing spring resets the pen core.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims (6)

1. The light-sensitive electronic touch pen comprises a pen holder, a pen core, a pen point cap and a main support arranged in the pen holder, and is characterized in that a friction sleeve used for being sleeved on the pen core is arranged in the pen holder, salient points are arranged on the inner wall of the friction sleeve, a pre-pressing spring which applies pre-pressing force to the friction sleeve is correspondingly arranged at the tail end of the friction sleeve, and a lever which rotates around a rotating shaft is arranged on the main support; one end of the lever is correspondingly provided with an optical signal receiving and transmitting sensor, the optical signal receiving and transmitting sensor comprises an optical signal transmitting end and an optical signal receiving end, and the optical signal transmitting end and the optical signal receiving end are correspondingly arranged on two sides of one end of the lever; the other end of the lever contacts the friction sleeve when writing.
2. The light-sensitive electronic stylus of claim 1, wherein the pre-compression spring applies a pressure to the friction sleeve < a maximum static friction force of the cartridge and the friction sleeve.
3. The light-sensitive electronic touch pen according to claim 1, wherein a limiting table for limiting is arranged on the main support corresponding to the preset distance of the front end of the friction sleeve.
4. The light-sensitive electronic touch pen according to claim 1, wherein the main support is provided with a pressure-bearing seat corresponding to the lever, the pressure-bearing seat is provided with a pressure-bearing rod in a penetrating way, the pressure-bearing rod is sleeved with a pressure-bearing spring, the pressure-bearing spring enables the top of the pressure-bearing rod to be abutted against the lever during writing, and the lever is further enabled to be always clung to the friction sleeve during writing, so that the shaking and deflection of the lever are prevented.
5. The light-sensitive electronic touch pen as claimed in claim 4, wherein the end of the pressure-bearing rod is convexly provided with a limit button matched with the pressure-bearing seat.
6. The light-sensitive electronic stylus according to claim 1, wherein the stylus calculates a deflection stroke of the lever according to the reduced light signal reception amount detected by the light signal receiving-transmitting sensor, thereby calculating writing pressure; the deflection stroke calculation formula of the lever is as follows:
L=L wide width of *（Φ-Φ Measuring ）/Φ；
Wherein L is the deflection travel of the lever, L Wide width of A width of light emitted by the sensor for transmitting and receiving the optical signal; phi is the light signal receiving amount detected by the light signal receiving and transmitting sensor when the light emitted by the light signal receiving and transmitting sensor is not shielded by the lever; phi Measuring The optical signal receiving quantity detected by the optical signal receiving and transmitting sensor during writing;
the writing pressure f=l×k, k being a constant.
CN202211091325.6A 2022-09-07 2022-09-07 Light-sensitive electronic touch pen Pending CN116243807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211091325.6A CN116243807A (en) 2022-09-07 2022-09-07 Light-sensitive electronic touch pen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211091325.6A CN116243807A (en) 2022-09-07 2022-09-07 Light-sensitive electronic touch pen

Publications (1)

Publication Number Publication Date
CN116243807A true CN116243807A (en) 2023-06-09

Family

ID=86628341

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211091325.6A Pending CN116243807A (en) 2022-09-07 2022-09-07 Light-sensitive electronic touch pen

Country Status (1)

Country Link
CN (1) CN116243807A (en)

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