Magnetic adsorption type pressure-sensitive intelligent pen

Abstract

The utility model discloses a magnetic adsorption type pressure sensing intelligent pen which comprises a supporting pen rack used for fixing a first magnet and a pressure sensing element, a pen refill is installed in the supporting pen rack in an embedded mode, and a connecting rack used for fixing a second magnet is connected to the tail of the pen refill in a clamped mode. In a static state, the first magnet and the second magnet are magnetically attracted to each other and enable the connecting frame to abut against the pressure sensing element so that an initial pressure signal can be obtained. During writing, the refill can stretch out and draw back up and down in the supporting penholder so as to trigger the pressure sensing element to obtain a pressure change signal. The two magnets are magnetically attracted to each other, so that the connecting frame abuts against the pressure sensing element all the time, no sand collision sound is generated, and writing is quieter; the pressure change corresponding to each stroke can be more accurately captured, and the writing experience and the digital recording precision are effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of intelligent writing pens, in particular to a magnetic adsorption type pressure sensitive intelligent pen. Background Art

[0002] An intelligent pen can immediately digitize the contents such as notes and drawings on paper and synchronize them to digital devices such as mobile phones, tablet computers or computers.

[0003] For the existing pressure sensitive intelligent pen, two magnets with the same poles facing each other are adopted to cooperate with a pressure sensor to obtain the pressure value. During normal writing, the pen tip is pressed inward to squeeze the sensor. When stopping writing and pressing, the pen tip is reset due to the repulsive force between the magnets. In this design, when writing or shaking the pen, a rustling sound will be generated due to the impact, which greatly affects the user experience. At the same time, since the magnets are arranged with the same poles, the pressure sensor usually will not be triggered in the initial state. Therefore, there is no linear relationship between the pressure value in the initial non-contact section and the pressing stroke, which further affects the accuracy of pressure recognition during writing. Summary of the Utility Model

[0004] Aiming at the above problems, the utility model aims to provide a magnetic adsorption type pressure sensitive intelligent pen with higher recognition accuracy.

[0005] To achieve the technical purpose, the solution of the utility model is: a magnetic adsorption type pressure sensitive intelligent pen, including a support pen holder for fixing a first magnet and a pressure sensing element. A pen tip is nested and installed in the support pen holder, and a connecting frame for fixing a second magnet is clamped at the tail of the pen tip;

[0006] The end faces of the first magnet and the second magnet corresponding to each other have opposite polarities. When at rest, the first magnet and the second magnet are magnetically adsorbed to each other and can make the connecting frame press against the pressure sensing element to obtain an initial pressure signal; when writing, the pen tip can move up and down in the support pen holder to trigger the pressure sensing element to obtain a pressure change signal.

[0007] Preferably, one end of the connecting frame is two or more elastic clamping arms, the top of the other end of the connecting frame is a hemispherical triggering part, and a second accommodating cavity for accommodating the second magnet is further arranged on the upper part of the connecting frame.

[0008] Preferably, a battery, a circuit board, a camera module and a touch control element are further arranged on the support pen holder. A fixing bin for accommodating the touch control element, a first accommodating cavity for accommodating the first magnet, a connecting cavity for accommodating the pressure sensing element and the elastic clamping arms, and a long tube cavity for accommodating the pen tip are sequentially arranged on one side of the support pen holder; a clamping bin for fixing the circuit board, a battery bin for placing the battery, and an accommodating bin for fixedly installing the camera are sequentially arranged on the other side of the support pen holder;

[0009] The pressure sensing element, the battery, the camera module and the touch control element are all electrically connected to the MCU on the circuit board.

[0010] Preferably, a tail cover is further arranged at the tail end of the support pen holder, and charging contacts are arranged on the surface of the tail cover, and the charging contacts are electrically connected to the circuit board.

[0011] Preferably, the first accommodating cavity is adjacent to one side of the connecting cavity where the pressure sensing element is installed, and the first magnet in the first accommodating cavity is magnetically adsorbed to the second magnet in the second accommodating cavity, so that the spherical triggering part on the elastic clamping arm keeps abutting against the pressure sensing element.

[0012] The beneficial effects of the present utility model: The end faces of the first magnet and the second magnet of the intelligent pen of the present application are opposite in polarity and magnetically adsorb each other. This magnetically adsorbed design enables the connecting frame to always abut against the pressure sensing element, and will not make a rustling collision sound due to repeated detachment and abutment, making it quieter when writing; at the same time, since the connecting frame and the pressure sensing element always keep abutting against each other, the pressure changes corresponding to each stroke can be captured more accurately, effectively improving the writing experience and the digital recording accuracy; at the same time, the structure of the present application is more compact and stable, facilitating maintenance. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic structural diagram of the support pen holder in the present utility model;

[0015] Figure 3 is a schematic structural diagram of the connecting frame in the present utility model;

[0016] Figure 4 is a schematic diagram of a partial structure of the present utility model.

[0017] In the figure: 1. Support pen holder; 2. Pen core; 3. Connecting frame; 301. Elastic clamping arm; 302. Hemispherical triggering part; 303. Second accommodating cavity; 4. First magnet; 5. Second magnet; 6. Pressure sensing element; 7. Battery; 8. Circuit board; 9. Camera module; 10. Touch control element; 11. Fixed bin; 12. Connecting cavity; 13. Long barrel cavity; 14. First accommodating cavity; 15. Battery bin; 16. Accommodating bin; 17. Tail cover; 18. Charging contact. Detailed Embodiments

[0018] The following further elaborates on the utility model of the present application in conjunction with the accompanying drawings and specific embodiments. For a clear and complete description of the technical solution, the following embodiments are selected for illustration; based on the content recorded in the present application, other embodiments obtained without creative labor fall within the protection scope of the present utility model.

[0019] In the following embodiments, it should be noted that the orientation or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", "top / bottom", etc. in the terms are all based on the orientation or positional relationships shown in the accompanying drawings. It is only for the convenience of clearly describing this embodiment, rather than indicating or implying that the device or element referred to must have a specific orientation, so it cannot be construed as a limitation to the present application.

[0020] As Figures 1-4 shown, a specific embodiment of the present utility model is a magnetic adsorption type pressure-sensitive smart pen, which includes a support pen holder 1 for fixing a first magnet 4 and a pressure sensing element 6. A refill 2 is nested and installed in the support pen holder 1, and a connecting frame 3 for fixing a second magnet 5 is clamped at the tail of the refill 2;

[0021] Among them, the N pole of the first magnet 4 is arranged opposite to the S pole of the second magnet 5 (or the S pole of the first magnet 4 is arranged opposite to the N pole of the second magnet 5). In the static state, the first magnet 4 attracts the second magnet 5 by magnetic force, so that the connecting frame 3 presses tightly against the pressure sensing element 6, thereby obtaining an initial pressure signal (the distance between the first magnet and the second magnet is about 1-5 mm; select neodymium iron boron magnets with appropriate adsorption force and thickness, and the initial pressure usually does not exceed 20% of the maximum threshold of the pressure sensing element).

[0022] Traditional smart pens need to overcome the repulsive force between the magnets and travel a certain distance before they can trigger the pressure sensing element, and there is an obvious rustling sound generated by the impact when writing; when the writing stroke has a state with less force, since the requirement of overcoming the repulsive force is not met and the pressure sensing element cannot be triggered, some data will be lost. When the smart pen of the present application is writing, even if a student writes lightly, the pressure sensing element can sense the pressure change. Especially when there are connecting strokes or lifting actions during writing, it can also record the pressure change in real time and can achieve no data loss; at the same time, when writing, the stroke of the refill can stretch and move very little, and there will be no rustling sound, and the writing is more fluent.

[0023] When a student writes more forcefully, the refill 2 will further extend upward to squeeze and trigger the pressure sensing element 6 to obtain a greater pressure signal. As the refill 2 writes on the paper, the writing force is also different. The refill will drive the connecting frame 3 to move up and down telescopically, and then trigger the pressure sensing element 6 to record these pressure change signals.

[0024] One end of the connecting frame 3 has two or more elastic clamping arms 301, which are used to fix the pen core 2. The top of the other end of the connecting frame 3 is a hemispherical triggering part 302. The hemispherical design helps to evenly distribute pressure, improving the accuracy and sensitivity of pressure sensing. The upper part of the connecting frame 3 is also provided with a second accommodating cavity 303 for accommodating the second magnet 5 to ensure the stable installation of the second magnet 5. As the pen core 2 moves up and down on the paper, the connecting frame 3 and the hemispherical triggering part 302 thereon will also move accordingly. This movement will change the extrusion force of the hemispherical triggering part 302 on the pressure sensing element 6, thereby triggering the pressure sensing element 6 to record the pressure change signal during the writing process. After being processed, these signals can reflect parameters such as the pressure and speed during handwriting, providing rich handwriting input data for intelligent devices.

[0025] The support pen holder 1 is also provided with a battery 7, a circuit board 8, a camera module 9 and a touch control element 10. Among them, the camera module 9 is used to capture and record image information such as handwriting during the writing or drawing process, providing raw data for subsequent digital processing and analysis; users can operate through the touch control element 10 to control the functions of the intelligent pen. One side of the support pen holder 1 is successively provided with a fixed bin 11 for accommodating the touch control element 10, a first accommodating cavity 14 for accommodating the first magnet 4, a connecting cavity 12 for accommodating the pressure sensing element 6 and the elastic clamping arm 301, and a long tube cavity 13 for accommodating the pen core 2. The other side of the support pen holder 1 is successively provided with a clamping bin for fixing the circuit board 8, a battery bin 15 for placing the battery 7 and an accommodating bin 16 for fixedly installing the camera; providing a stable installation space and protection for the components inside the intelligent pen to ensure that each component can work properly and avoid mutual interference.

[0026] The pressure sensing element 6, the battery 7, the camera module 9 and the touch control element 10 are all electrically connected to the MCU on the circuit board 8. Using the MCU on the circuit board 8 as the control core, signal transmission and data processing between components are realized.

[0027] The tail end of the support pen holder 1 is also provided with a tail cover 17. The surface of the tail cover 17 is provided with charging contacts 18, and the charging contacts 18 are electrically connected to the circuit board 8, facilitating the power transmission between the intelligent pen and external charging devices.

[0028] The first accommodating chamber 14 is adjacent to one side of the connecting chamber 12 where the pressure sensing element 6 is installed. The first magnet 4 in the first accommodating chamber 14 is magnetically attracted to the second magnet 5 in the second accommodating chamber 303 and keeps the spherical trigger part on the elastic clamp arm 301 in contact with the pressure sensing element 6. Different from the previous principle of repelling each other between the first magnet 4 and the second magnet 5, magnetic attraction can provide a more stable connection and support. The magnetic attraction force can ensure that the connecting frame 3, the spherical trigger part and the pressure sensing element 6 remain in contact with each other, thereby reducing position deviation or shaking caused by external force or vibration, making the response more sensitive, and improving the stability and accuracy of writing.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any minor modifications, equivalent substitutions and improvements made to the above embodiments based on the technical essence of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. A magnetic adsorption type pressure-sensitive intelligent pen, characterized in that: It includes a support pen holder for fixing the first magnet and the pressure sensing element. A refill is nested and installed in the support pen holder, and a connecting frame for fixing the second magnet is clamped at the tail of the refill. The end faces of the first magnet and the second magnet corresponding to each other have opposite polarities. When at rest, the first magnet and the second magnet are magnetically adsorbed to each other, and the connecting frame can be pressed against the pressure sensing element to obtain an initial pressure signal. When writing, the refill can move up and down in the support pen holder, thereby triggering the pressure sensing element to obtain a pressure change signal.

2. The magnetic adsorption type pressure sensing intelligent pen according to claim 1, wherein: One end of the connecting frame is two or more elastic clamping arms, the top of the other end of the connecting frame is a hemispherical triggering part, and a second accommodating cavity for accommodating the second magnet is also provided on the upper part of the connecting frame.

3. The magnetic adsorption type pressure-sensitive smart pen according to claim 2, characterized in that: A battery, a circuit board, a camera module and a touch control element are also provided on the support pen holder. On one side of the support pen holder, there are successively arranged a fixing bin for accommodating the touch control element, a first accommodating cavity for accommodating the first magnet, a connecting cavity for accommodating the pressure sensing element and the elastic clamping arms, and a long barrel cavity for accommodating the refill. On the other side of the support pen holder, there are successively arranged a clamping bin for fixing the circuit board, a battery bin for placing the battery, and an accommodating bin for fixedly installing the camera. The pressure sensing element, the battery, the camera module and the touch control element are all electrically connected to the MCU on the circuit board.

4. The magnetic adsorption type pressure sensing smart pen according to claim 3, characterized in that: A tail cover is also provided at the tail end of the support pen holder, and charging contacts are arranged on the surface of the tail cover. The charging contacts are electrically connected to the circuit board.

5. The magnetic adsorption type pressure-sensitive smart pen according to claim 3, wherein: The first accommodating cavity is adjacent to the side of the connecting cavity where the pressure sensing element is installed. The first magnet in the first accommodating cavity is magnetically adsorbed to the second magnet in the second accommodating cavity, and the spherical triggering part on the elastic clamping arm is kept in contact with the pressure sensing element.

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