Handwriting erasing device of electromagnetic induction stylus
Through dual magnetic core linkage adjustment of the inductance value and frequency of the LC resonant circuit, combined with the upper computer software, the problem of the lack of handwriting erasing function of the electromagnetic induction touch stylus is solved, achieving convenient electronic handwriting erasing and user experience improvement.
Patent Information
- Application Number
- CN202421497865.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The existing electromagnetic induction touch stylus lacks handwriting erasing function, which leads to inconvenience in use.
The inductance value in the LC resonant circuit is changed through dual magnetic core linkage, the resonant frequency is adjusted, and the handwriting erasing function is realized in combination with the upper computer terminal software such as tablet computers.
It provides hardware support to easily erase electronic handwriting, improve user experience, and separate it from the electronic pen through an independent port, making it easy to disassemble and assemble.
Smart Images
Figure CN222690143U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of touch-controlled stylus pens, in particular to a handwriting erasing device for an electromagnetic induction touch-controlled pen. Background Art
[0002] Among consumer electronic products, many existing products are equipped with electromagnetic induction (EMR) touch stylus. However, such stylus only has writing function, and there is no hardware support for electronic erasing function, which makes it inconvenient to use. Based on the above problems, the utility model proposes a handwriting erasing device for electromagnetic induction stylus. Summary of the invention
[0003] The purpose of the utility model is to provide a handwriting erasing device for an electromagnetic induction stylus pen, which changes the inductance value in the LC resonant circuit through the linkage of dual magnetic cores, and changes the resonant frequency in the LC resonant circuit by changing the inductance value. By cooperating with upper computer terminal software such as tablet computer erasing software, the function of erasing the handwriting of the stylus pen is realized, thereby making the product more convenient to use and improving the user experience value, and solving the problem of inconvenience caused by the lack of handwriting erasing function of the touch stylus in the prior art.
[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a handwriting erasing device for an electromagnetic induction touch pen, characterized in that: it includes a push rod, the push rod has an erasing head part and a rod part, and the end of the rod part close to the erasing head part is sleeved with a pressure-sensitive magnetic core; it also includes a coil magnetic core with a through hole and a bracket, the coil magnetic core is sleeved in the bracket, and the push rod passes through the coil magnetic core and is sleeved in the bracket; an adjusting fastener is provided between the pressure-sensitive magnetic core and the coil magnetic core, and an elastic part is provided between the adjusting fastener and the coil magnetic core; the end of the coil magnetic core away from the pressure-sensitive magnetic core is connected to the PCBA.
[0005] Furthermore, the adjusting fastener comprises a nut, and the surface of the push rod is provided with a thread matching the nut.
[0006] Furthermore, the end face distance between the pressure-sensitive magnetic core and the coil magnetic core is adjusted to 0.25 mm by the adjusting fastener.
[0007] Furthermore, a magnetic core mounting seat and a PCBA mounting seat are provided in the bracket.
[0008] Furthermore, it also includes a sleeve, the push rod portion is sleeved in the sleeve, and the wiping head portion is exposed outside the sleeve.
[0009] Furthermore, a sleeve is provided at one end of the sleeve away from the wiping head portion, and the sleeve is snap-connected with the sleeve.
[0010] Preferably, the elastic member is a spring.
[0011] Furthermore, the handwriting erasing device provides a port for connecting to an electromagnetic induction stylus pen.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0013] 1. The utility model provides hardware support for the upper computer terminal software such as the tablet computer erasing software, which can more conveniently erase electronic handwriting and improve the user experience.
[0014] 2. The handwriting erasing device of the utility model provides a port connected to the tail of the electromagnetic induction touch pen, so that the electronic erasing functional component of the utility model is separated from the writing part of the electronic pen, which is easy to disassemble and assemble and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a structural exploded view of the utility model.
[0017] In the figure: 1. push rod; 11. wiper head; 12. rod; 2. pressure-sensitive magnetic core; 3. nut; 4. elastic member; 5. magnetic core; 6. coil; 7. PCBA; 8. bracket; 81. magnetic core mounting seat; 82. PCBA mounting seat; 9. sleeve; 10. sleeve. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] Example 1
[0020] like Figure 1-2As shown, a handwriting erasing device for an electromagnetic induction touch pen of this embodiment includes a push rod 1, wherein the push rod 1 has an erasing head portion 11 and a rod portion 12, wherein one end of the rod portion 12 close to the erasing head portion 11 is sleeved with a pressure-sensitive magnetic core 2; further comprising a magnetic core 5 having a through hole, and a coil 6 wound around the outside of the magnetic core 5, wherein the magnetic core 5 and the coil 6 constitute a coil magnetic core; further comprising a bracket 8, wherein a magnetic core mounting seat 81 and a PCBA mounting seat 82 are provided in the bracket 8, wherein the coil magnetic core is sleeved in the magnetic core mounting seat 81 of the bracket 8, and the push rod 1 passes through the coil magnetic core and is sleeved on the magnetic core Inside the mounting seat 81; an adjusting fastener is provided between the pressure-sensitive magnetic core 2 and the coil magnetic core, and the adjusting fastener includes a nut 3 and a thread 13 provided on the surface of the push rod 1, and the nut 3 cooperates with the thread 13 to adjust the end face distance between the pressure-sensitive magnetic core 2 and the coil magnetic core to 0.25mm; an elastic member 4 is provided between the adjusting fastener and the coil magnetic core, and the elastic member of this embodiment is a spring; the end of the coil magnetic core away from the pressure-sensitive magnetic core 2 is connected to PCBA7, and the coil magnetic core has welding points A and B, and contacts A1 and B1 are provided on the PCBA7.
[0021] The utility model also includes a sleeve 9 made of plastic material, the push rod 12 is sleeved in the sleeve 9, the wiping head 11 is exposed outside the sleeve, and a metal sleeve 10 is provided at one end of the sleeve 9 away from the wiping head 11, and the sleeve 9 is connected with the sleeve 10 by snapping.
[0022] Preferably, the push rod 1 and the bracket 8 of the present invention are made of plastic.
[0023] The assembly process of the utility model is as follows:
[0024] 1. Use a winding machine to wind a coil 6 of a certain specification onto a magnetic core 5 having a through hole to form a coil magnetic core, and then install the coil magnetic core into a magnetic core mounting seat 81 of a bracket 8.
[0025] 2. Assemble the pressure-sensitive magnetic core 2 with a through hole onto the push rod 1. The middle section of the push rod 1 is provided with a thread 13. Push the push rod 1 assembled with the pressure-sensitive magnetic core 2 into the coil core and pass through the through-hole of the coil core to be installed in the core mounting seat 81 of the bracket 8. Then screw the nut 3 onto the thread 13 of the push rod 1. Through a special clamp, adjust the end face distance between the pressure-sensitive magnetic core 2 on the push rod 1 and the coil core to 0.2 mm. Install the elastic member 4 into the assembly consisting of the push rod 1 and the bracket 8.
[0026] 3. Install the PCBA into the PCBA mounting seat 82 located at the rear end of the magnetic core mounting seat 81, and solder the welding points A and B of the coil 6 to the A1 and B1 contacts on the PCBA 7 respectively.
[0027] The working principle of the utility model is as follows:
[0028] The coil core is welded to the pads A1 and B1 of PCBA7, and LC frequency oscillation can be completed with the electronic component-capacitor on PCBA7. During erasing, when the erasing head 11 contacts the display screen, the push rod 7 is pushed with force, and the erasing head 11 drives the pressure rod core 6 to be close to the coil core through the push rod 7, the inductance value increases, and the oscillation frequency changes to the erasing frequency set by the upper computer terminal software such as the tablet computer software, thereby completing the electronic erasing function set at the end of the pen.
[0029] The handwriting erasing device of the utility model provides a port connected to the tail of the electromagnetic induction stylus, so that the electronic erasing function component of the utility model is separated from the writing part of the electronic pen, and the component is conveniently installed in the tail of the stylus to realize the erasing function.
[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A handwriting erasing device for an electromagnetic induction stylus pen, characterized in that: It includes a push rod, the push rod has a wiping head and a rod, and the end of the rod close to the wiping head is sleeved with a pressure-sensitive magnetic core; it also includes a coil core with a through hole and a bracket, the coil core is sleeved in the bracket, and the push rod passes through the coil core and is sleeved in the bracket; an adjusting fastener is provided between the pressure-sensitive magnetic core and the coil core, and an elastic member is provided between the adjusting fastener and the coil core; the end of the coil core away from the pressure-sensitive magnetic core is connected to the PCBA.
2. The handwriting erasing device of an electromagnetic induction stylus pen as claimed in claim 1, characterized in that: The adjusting fastener comprises a nut, and a thread matching the nut is provided on the surface of the push rod.
3. The handwriting erasing device of an electromagnetic induction stylus pen as claimed in claim 1, characterized in that: The end face distance between the pressure-sensitive magnetic core and the coil magnetic core is adjusted to 0.25 mm by the adjusting fastener.
4. The handwriting erasing device of an electromagnetic induction stylus pen as claimed in claim 1, characterized in that: A magnetic core mounting seat and a PCBA mounting seat are arranged in the bracket.
5. The handwriting erasing device of an electromagnetic induction stylus pen as claimed in claim 1, characterized in that: It also includes a sleeve, the push rod portion is sleeved in the sleeve, and the wiping head portion is exposed outside the sleeve.
6. The handwriting erasing device of an electromagnetic induction touch pen as claimed in claim 5, characterized in that: A sleeve is provided at one end of the sleeve away from the wiping head portion, and the sleeve is clamped and connected with the sleeve.
7. The handwriting erasing device of an electromagnetic induction stylus pen as claimed in claim 1, characterized in that: The elastic member is a spring.
8. The handwriting erasing device of an electromagnetic induction touch pen according to any one of claims 1 to 7, characterized in that: The handwriting erasing device provides a port for connecting with the electromagnetic induction stylus.