CN210836022U - Capacitance pen - Google Patents

Abstract

The utility model provides an electric capacity pen, electric capacity pen includes nib and electrically conductive pen container, the nib sets up the front end of electrically conductive pen container, the inside circuit module that is provided with of electrically conductive pen container, electrically conductive pen container and nib all with the circuit module electricity is connected. The utility model discloses to be connected through the connecting portion of detachable connection between conductive nib and the conduction portion, when conductive nib wearing and tearing are comparatively serious or damage, can break away from the nib with conductive nib intercommunication connecting portion together, then the conductive nib and the connecting portion of renewal can. Therefore, the user can only replace the conductive pen point and the connecting part without replacing the whole capacitance pen, the consumption cost of the user is saved, and the use experience of the user is improved.

Description

Capacitance pen

Technical Field

The application relates to the field of intelligent equipment, in particular to a capacitance pen.

Background

With the improvement of the technological level and the quality of life, more and more intelligent devices appear in the daily work and life of people, and the touch device is one of the intelligent devices. People can directly operate on the display screen through the touch equipment without a mouse or other equipment for wired or wireless operation, and the operation is convenient and fast. Meanwhile, writing devices capable of writing on touch devices have also come into play. People can write on the touch device at will like using a pen by using the writing device.

Capacitive touch screens are touch devices that are currently also widely used for some time in the future. The capacitive touch screen only needs to be touched, does not need pressure to generate signals, and has the advantages of wear resistance, long service life, low use and maintenance cost and the like. The capacitive pen is capable of writing on a capacitive touch screen. The basic principle is that coordinate positioning is realized by generating capacitance change between a capacitance pen and a capacitance touch screen. The advent of the capacitive stylus provides increased convenience to the user. However, the pen point structure of the existing capacitance pen is complex, and the pen point part of the pen point cannot be detached due to the complex pen point structure. Like this, in case nib position wearing and tearing are excessive or the damage, can only return the factory maintenance or directly change a new electric capacity pen, improved user's consumption cost undoubtedly, reduced user's use and experienced. And the user also lacks the interactivity when using the electric capacity pen for the electric capacity pen is whole function comparatively single, can't satisfy other demands of user.

SUMMERY OF THE UTILITY MODEL

In order to solve one of the above technical problems, the utility model provides an electric capacity pen.

The embodiment of the utility model provides a capacitance pen, the capacitance pen includes nib and conductive pen container, the nib sets up the front end in the conductive pen container, the inside circuit module that is provided with of conductive pen container, conductive pen container and nib all with the circuit module electricity is connected;

the nib includes conductive nib, connecting portion, conductive part, conduction portion, transmission portion and pressure portion, conductive nib with pass through between the conductive part connecting portion fixed connection, the first half of connecting portion deepens extremely in the conductive part, and with the detachable connection of conductive part, the lower half of connecting portion deepens extremely in the conductive nib, and with conductive nib fixed connection, the conductive part with circuit module electricity is connected, the lateral wall cover of conductive part is equipped with the conduction portion, the cover is equipped with the transmission portion on the lateral wall of conduction portion, the top of conduction portion is provided with the pressure portion, conductive nib drives under the exogenic action or self action of gravity conductive part, conduction portion and transmission portion are to being close to the direction of pressure portion or keeping away from the direction motion of pressure portion.

Preferably, the bottom of the conductive part is provided with an accommodating groove capable of accommodating the upper half part of the connecting part, the inner wall of the accommodating groove and the outer wall of the upper half part of the connecting part are provided with matched threads, and the connecting part is connected with the conductive part through the threads.

Preferably, the inner wall of the emission part and the outer wall of the conduction part are provided with matching threads, and the emission part is connected with the conduction part through the threads.

Preferably, the pressure sensing part comprises a pressure sensor and a fixed part, the fixed part is a cylindrical structure with a closed top, the top of the conduction part extends into the inside of the fixed part, the conduction part can move up and down in the fixed part under the action of external force, the pressure sensor is arranged in the fixed part and located above the conduction part, the fixed surface of the pressure sensor is fixedly connected with the top of the fixed part, and the detection surface of the pressure sensor faces the top of the conduction part.

Preferably, a clamping through hole is formed in the side wall of the fixing portion, a protruding portion is arranged on the side wall of the top of the conducting portion and located in the clamping through hole, and the aperture of the clamping through hole is larger than the height of the protruding portion.

Preferably, a steel sheet is arranged on the top of the conduction part, and the top surface of the steel sheet faces the detection surface of the pressure sensor.

Preferably, a buffer portion is provided between the fixing surface of the pressure sensor and the top of the fixing portion.

Preferably, the capacitance pen further comprises a key, a key through hole is formed in the conductive pen container, the key is located in the key through hole, and the key is electrically connected with the circuit module.

Preferably, the button sets up the top of electrically conductive pen container, the button includes button body and button cap, the button body is located in the electrically conductive pen container, just the button body with the circuit module electricity is connected, button cap protrusion or parallel and level with the surface of electrically conductive pen container, the button cap is the printing opacity material, the below of button cap is provided with the light source, the light source with the circuit module electricity is connected.

Preferably, the circuit module is further provided with a charging contact, the charging contact is used for being connected with an external power supply so that the circuit module is powered by the external power supply, the side wall of the conductive pen container is provided with a charging through hole, and the external power supply is inserted into the through hole and is electrically connected with the charging contact.

The utility model has the advantages as follows: the utility model discloses to be connected through the connecting portion of detachable connection between conductive nib and the conduction portion, when conductive nib wearing and tearing are comparatively serious or damage, can break away from the nib with conductive nib intercommunication connecting portion together, then the conductive nib and the connecting portion of renewal can. Therefore, the user can only replace the conductive pen point and the connecting part without replacing the whole capacitance pen, the consumption cost of the user is saved, and the use experience of the user is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a capacitance pen according to an embodiment of the present invention;

fig. 2 is an expanded view of a capacitance pen according to an embodiment of the present invention;

fig. 3 is a schematic diagram of the position of the on-off key and the light source according to the embodiment of the present invention;

FIG. 4 is a schematic structural view of a pen head according to an embodiment of the present invention;

FIG. 5 is a sectional view taken along line A-A of FIG. 4;

fig. 6 is a schematic diagram of the position where the conductive part contacts the pressure sensor.

Reference numerals:

1. the pen point comprises a pen point body, 2, a conductive pen container, 3, a circuit module, 4, an inner frame, 5, a charging contact, 6, a magnet, 7, an upper page key, 8, a lower page key, 9, a pointer key, 10, a rubber key, 11, an on-off key, 12, a light source, 13 and a flexible flat cable;

1-1 parts of conductive pen points, 1-2 parts of connecting parts, 1-3 parts of conductive parts, 1-4 parts of conductive parts, 1-5 parts of transmitting parts, 1-6 parts of pressure sensing parts;

1-6-1 parts of pressure sensor, 1-6-2 parts of fixing part, 1-6-3 parts of steel sheet, 1-6-4 parts of buffer part;

2-1, a first part of the conductive pen holder, 2-2, a second part of the conductive pen holder, 2-3, and a third part of the conductive pen holder.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. Moreover, in order to provide a clearer description and easier understanding of the present application, the parts in the drawings are not drawn according to their relative dimensions, some dimensions have been exaggerated compared to other relevant dimensions; irrelevant details are not fully drawn for the sake of brevity.

Example 1

The embodiment provides a capacitive pen, as shown in fig. 1, the capacitive pen includes a pen point 1 and a conductive pen container 2, the pen point 1 is disposed at a front end of the conductive pen container 2, a circuit module 3 is disposed inside the conductive pen container 2, and the conductive pen container 2 and the pen point 1 are both electrically connected to the circuit module 3.

Specifically, the capacitive pen provided in this embodiment is an active capacitive pen, which can communicate with a capacitive screen, thereby implementing various on-screen or remote operations. As shown in fig. 2, in the present embodiment, the circuit module 3 can be generally divided into two parts according to its function, the first part is a basic circuit, and the second part is a capacitor circuit. The basic circuit is a circuit structure which can be applied to any or most electronic pens. Such as an infrared pen or optical pen, etc. The power consumption of the electronic components in the basic circuit is relatively low. The capacitive circuit can be applied only to the capacitive pen, and can realize the functions of receiving, transmitting and processing signals. The capacitor circuit generally includes electronic elements such as an amplifier, a transistor, a resistor, and a capacitor. The circuit module 3 may be divided into a plurality of circuit boards to be arranged according to the properties of the circuit structure included therein and the relationship of cooperation with other devices. The capacitance pen provided by the embodiment is mainly divided into a capacitance circuit board, a main control board, an antenna board, a lamp board, a key board, a grounding board and a power supply board. Of course, the number and the position relation of the circuit boards can be adjusted adaptively according to different structures and different functions of the capacitance pen. The whole circuit module 3 is fixed in the conductive pen container 2 through the inner frame 4. The outline of the inner frame 4 can be matched with the inner wall of the conductive pen container 2, so that the accommodating volume of the inner frame 4 is increased, and the space utilization rate of the conductive pen container 2 is increased. The side wall of the inner frame 4 can be attached to the inner wall of the conductive pen container 2 to limit the movement in the horizontal direction. The bottom of the inner frame 4 can be fixedly connected with the pen point 1, and the top of the inner frame 4 can be closed by a key or the conductive pen container 2 to limit the movement in the vertical direction. In order to fix the circuit module 3 in the inner frame 4 more firmly, the connection between the inner frame 4 and each circuit board may be formed by, but not limited to, dispensing, clamping, and screwing to fix the circuit board firmly in the inner frame 4. In addition, the inner frame 4 may be divided into left and right portions, and a cavity may be formed between the left and right portions. Then, the circuit module 3 is placed in the cavity, and then the circuit module 3 is pressed in the inner frame 4 by the pressing force of the left and right portions of the inner frame 4.

In addition, the present embodiment further provides a charging contact 5 on the power panel, and the charging contact 5 can be connected to an external power source, so that the circuit module 3 is powered by the external power source. In order to facilitate the connection between the external power supply and the charging contact 5, a charging through hole can be formed on the side wall of the conductive pen container 2. The charging through hole allows the charging contact 5 to communicate with the outside, and further allows an external power source to penetrate into the charging through hole and be electrically connected with the charging contact 5. After receiving the electric energy sent by the external power supply, the charging contact 5 can supply power for electronic elements on other circuit boards through the power panel so as to ensure the normal work of the capacitance pen.

In addition to providing the charging contact 5 on the capacitance pen to ensure the capacitance pen is normally powered by an external power supply, the present embodiment also provides a magnet 6 around the charging contact 5. Specifically, the purpose one of this magnet 6 can be connected with the magnetism of the charger magnetism of inhaling of outside, and another purpose also can be through magnet 6 with the whole absorption of electric capacity pen on having magnetic electric capacity screen equipment to realize electric capacity screen and electric capacity pen's integration.

In this embodiment, in order to ensure the reliability of the battery in the capacitive pen, a charging and discharging protection circuit is provided, and the charging and discharging protection circuit can monitor the charging and discharging state of the battery. When the battery has abnormal charging and discharging conditions, the abnormal conditions are reported to the processor. The processor may control the operation state of the entire circuit module 3, such as turning off the circuit module 3 or cutting off the battery, according to the abnormal situation.

The capacitive pen provided by the embodiment is further provided with a motion sensor inside, and the motion sensor can identify the current attitude information of the capacitive pen. The processor can be practically applied in many scenes according to the attitude information of the capacitance pen. For example, the attitude information of the capacitance pen can be used to realize the function of an air mouse. Namely, a user can remotely control the mouse in the capacitive screen at a remote place, and simultaneously, the functions of clicking, double clicking, dragging and the like can be realized by combining keys. In addition, if the capacitance pen has more functions, the key cannot satisfy the display of all the functions. The gesture information of the capacitive pen can be matched, so that a user can operate corresponding keys in different gestures of the capacitive pen, and corresponding functions are presented or switched.

In addition, in general, if a user does not actively turn off or set the performance of the device during charging, the device still keeps in a normal working state and consumes normal power. However, the capacitive stylus consumes relatively much power and, if it is kept in a normal operating state even during charging, it will take a long time to be fully charged. In addition, the capacitive pen provided by the embodiment is different from other portable electronic devices in that the capacitive pen provided by the embodiment is mainly suitable for a large-sized capacitive screen. Therefore, when a user needs to charge the capacitive pen, the capacitive pen does not need to be used while charging. In this case, the optimal state is to automatically shut down the capacitive pen when it is charged or to set the capacitive pen in an operating state with the lowest power consumption. Or another scenario exists, and after the capacitive pen is stored by the user, the capacitive pen can be automatically turned off or set in the working state with the lowest power consumption. Therefore, the electric quantity is saved, the operation steps of the user are simplified, and the user experience is improved.

In order to achieve the above object, the capacitance pen proposed in the present embodiment may further provide a proximity switch, such as a hall switch, on the charging contact 5, and then connect the hall switch to the processor. The Hall switch can change the working state of the Hall switch under the influence of a magnetic field, and the processor can control the whole circuit structure according to the change of the working state of the Hall switch. Accordingly, the magnet 6 may be provided on the charging device or the storage device. When the charging equipment is inserted into the capacitance pen or the capacitance pen is placed in the containing equipment, the Hall switch in the capacitance pen senses the magnetic field generated by the magnet 6 in the charging equipment or the containing equipment, so that the working state of the Hall switch is switched according to the change of the magnetic field. For example, when the charging device is inserted into the capacitive pen or the capacitive pen is placed in the storage apparatus, the hall switch is turned off by the influence of the magnetic field of the magnet 6. And after receiving the signal of closing the Hall switch, the processor controls all or part of other electronic elements to be in a dormant or standby state and operates in a mode with lower power consumption.

In addition, the capacitance pen provided by the embodiment is also provided with a detection circuit for detecting the excitation signal of the capacitance screen. Before the detection circuit is specifically described, a simple description of the operation principle of the capacitive stylus proposed in this embodiment is first required. At present, capacitive screens in the market are mainly divided into a surface capacitive screen and a projection capacitive screen, wherein the projection capacitive screen is divided into a self-capacitive screen and a mutual capacitive screen. The surface capacitive screen and the self capacitive screen are difficult to realize real multi-point touch due to the limitations of the structure and the working principle of the surface capacitive screen and the self capacitive screen. Therefore, the mutual capacitive screen becomes a capacitive screen which is more inclined to be used by a wide range of users. The mutual capacitance screen is characterized in that transverse electrodes and longitudinal electrodes are made of ITO on the surface of glass, and the mutual capacitance screen is different from a self-capacitance screen in that a capacitor is formed at the position where two groups of electrodes are crossed, namely the two groups of electrodes respectively form two poles of the capacitor. When a finger touches the capacitive screen, the coupling between the two electrodes near the touch point is affected, thereby changing the capacitance between the two electrodes. When the mutual capacitance is detected, the transverse electrodes sequentially send out excitation signals, and the longitudinal electrodes simultaneously receive signals, so that the capacitance value of the intersection point of the transverse electrodes and the longitudinal electrodes, namely the capacitance value of the two-dimensional plane of the whole touch screen can be obtained. And calculating the coordinate of each touch point according to the two-dimensional capacitance variation data of the touch screen. Therefore, even if there are a plurality of touch points on the screen, the real coordinates of each touch point can be calculated.

Based on the above principle, the capacitive stylus proposed in this embodiment first receives the excitation signal from the capacitive screen before performing normal operation. Meanwhile, the receiving of the excitation signal indicates that the user has an incentive to use the capacitive pen. Therefore, the present embodiment addresses this feature by providing a detection circuit in the capacitive stylus for detecting the excitation signal emitted by the capacitive screen. The detection circuit can be realized by electronic elements with amplification function such as a triode. The detection circuit is connected with the processor, and the processor processes the detection signal according to the received detection signal sent by the detection circuit. Specifically, after the detection circuit detects the excitation signal sent by the capacitive screen, a detection signal capable of indicating that the excitation signal is detected is sent to the processor. The processor controls the capacitor circuit to enter a normal working state according to the detection signal. After the capacitor circuit enters a normal working state, the normal work of the capacitor pen can be ensured. If the excitation signal sent by the capacitive screen is not detected by the detection circuit, the processor cannot acquire a detection signal indicating that the excitation signal is detected by the detection circuit. At this time, the processor can separate the capacitor circuit from the whole circuit structure or control the capacitor circuit to enter a sleep or standby state so as to reduce the loss of the capacitor circuit part to the electric quantity.

In addition, when the user is in practical application, in some specific scenes, the user often frequently makes an action that the capacitive pen approaches or leaves the capacitive screen in the process of using the capacitive pen. This action of moving closer or further away from the pair is very short for most of the time interval. If the capacitor circuit is frequently switched between the normal working state and the dormant or standby state in a short time, the normal function of the capacitor pen may be affected, and the energy-saving effect is not ideal. Therefore, the time interval can be preset during the action of the user from approaching the capacitive screen to moving away from the capacitive screen. When a user moves the capacitive pen from a position close to the capacitive screen to a position far away from the capacitive screen, the capacitive pen is maintained in a normal working state. If the capacitive pen cannot acquire the excitation signal of the capacitive screen again within the preset time interval, the capacitive circuit is switched to a sleep or standby state from the normal working state, or is directly cut off from the circuit structure, and the capacitive circuit is not restored to the normal working state until the detection circuit acquires the excitation signal of the capacitive screen again. On the contrary, if the excitation signal of the capacitive screen is acquired again within the preset time interval, the capacitive pen is maintained in the normal working state. Therefore, fluency of a user when using the capacitance pen can be guaranteed, and loss caused by frequent turn-off and turn-on of electronic elements can be reduced. Of course, in this judgment logic, the motion information of the capacitance pen can also be added as the basis for switching the working state of the capacitance pen, so as to ensure the reasonability and the accuracy.

In this embodiment, a plurality of keys may be set according to different functions of the capacitive pen, for example, a page turning key for facilitating office courseware demonstration, a play key for facilitating video playing, a pointer key 9 for facilitating remote pointer control, an on-off key 11 for facilitating on-off of the capacitive pen, and the like. Generally, a key includes a key body and a key cap. The key body is an electronic part which is directly fixed on the key board and is connected with the main control board. The key cap is a mechanical part arranged on the top of the key body. The user can click the key body by acting on the key cap. Correspondingly, the side wall of the conductive pen container 2 is provided with a key through hole which can provide a channel for the relative movement between the key cap and the key body.

In this embodiment, the capacitive pen is provided with an upper page key 7, a lower page key 8, a pointer key 9, an eraser key 10, and an on-off key 11, respectively. The rubber key 10 is arranged at a position close to the pen point 1, and handwriting on the capacitive screen can be erased by pressing the rubber key 10. The positions of the upper page key 7, the lower page key 8 and the pointer key 9 are suitable for conforming to the use habit of the user. The upper page key 7 and the lower page key 8 can be used as page turning keys of office software or progress bar adjusting keys of a video player and the like. The top of the capacitive pen is provided with an on-off key 11, and the capacitive pen can be in a power-on or power-off state by pressing the on-off key 11 and can also be used as a key for calling out a built-in sketch board of a windows system or an android system. The material of the on-off switch 11 is a light-permeable material. A light source 12 is disposed below the switch key 11, and light emitted from the light source 12 can be displayed through the switch key 11, as shown in fig. 3 and 4. The light source 12 may be implemented by a three-color lamp, and different operating states are respectively represented by different colors of light, for example, red indicates power exhaustion, green indicates a power-on or normal state, and yellow indicates a standby or charging state. Since the light source 12 is disposed at a position far from the circuit board than other electronic devices, connection with the circuit board is difficult. The present embodiment is connected by means of a flexible flat cable 13. Specifically, a lamp panel is provided on the flexible flat cable 13, and the light source 12 is provided on the lamp panel. And then connected to the main control board through the flexible flat cable 13. In order to better and more reasonably utilize the space on the flexible flat cable 13. In this embodiment, the flexible flat cable 13 can be routed through the keys, and the key bodies of the keys are disposed on the flexible flat cable 13 through the key board. Not only utilizes the space of the flexible flat cable 13, but also saves the installation space of the keys.

In this embodiment, the conductive pen container 2 may be made of metal. However, the conductive pen container 2 made of metal can be short-circuited under special conditions. For example, if the conductive pen holder 2 is made of metal at a position close to the charging contact 5, the conductive pen holder 2 may be easily contacted with the charging contact 5, thereby causing a short circuit. Therefore, in order to avoid the situation, the parts which are easy to generate short circuit can be made of plastic materials, and only the parts of the conductive pen container 2 which are frequently contacted with the human body are made of metal materials. More specifically, the present embodiment integrally divides the conductive pen barrel 2 into three parts. As shown in fig. 1, the first portion 2-1 is a metal portion located at the front end of the capacitance pen. The metal part can ensure that a user keeps in contact with a human body when using the capacitance pen. The second part 2-2 is a plastic part located at the rear end of the capacitance pen. The plastic part mainly serves to prevent the problem of short-circuiting in contact with the charging contact 5. The third part 2-3 is a plastic part for coating the pen point 1. The plastic part can prevent the contact short circuit with the conductive device of the pen point 1 and is more convenient for the mould processing of the plastic part of the conductive pen container 2. Through the distribution arrangement of the metal part and the plastic part of the conductive pen container 2, the quality of the conductive pen container 2 can be integrally reduced, and meanwhile, the streamline aesthetic design of the conductive pen container 2 is brought.

In the present embodiment, as shown in fig. 4 and 5, the pen tip 1 specifically includes a conductive pen tip 1-1, a connection portion 1-2, a conductive portion 1-3, a conductive portion 1-4, an emitting portion 1-5, and a pressure sensing portion 1-6, the conductive pen tip 1-1 is fixedly connected to the conductive portion 1-3 through the connection portion 1-2, an upper half of the connection portion 1-2 extends into the conductive portion 1-3 and is detachably connected to the conductive portion 1-3, a lower half of the connection portion 1-2 extends into the conductive pen tip 1-1 and is fixedly connected to the conductive pen tip 1-1, the conductive portion 1-4 is sleeved on a sidewall of the conductive portion 1-3, the emitting portion 1-5 is sleeved on an outer sidewall of the conductive portion 1-4, the pressure sensing portion 1-6 is disposed on a top of the conductive portion 1-4, the conductive pen point 1-1 drives the conductive part 1-3, the conductive part 1-4 and the transmitting part 1-5 to move towards the direction close to the pressure sensing part 1-6 or away from the pressure sensing part 1-6 under the action of external force or self gravity.

Specifically, the conductive tip 1-1 of the pen head 1 is made of a conductive material, such as a conductive POM material. The conductive pen point 1-1 can receive an excitation signal sent by an existing mutual capacitance type capacitive screen on the market at present, and then sends the excitation signal to the circuit module 3 for processing.

On top of the conductive pen tip 1-1, a conductive part 1-3 is arranged, which conductive part 1-3 can be in electrical contact with the conductive pen tip 1-1. That is, the conductive pen tip 1-1 can transmit the acquired excitation signal to a subsequent processor or circuit through the conductive part 1-3 for processing. Accordingly, a solder joint may be provided on the conductive portions 1-3, such that a wire connects the conductive portions 1-3 and a pin of a processor or circuit through the solder joint. In the present embodiment, in order to allow the conductive pen tip 1-1 to be freely detachable from the conductive part 1-3, a connection part 1-2 is provided between the conductive pen tip 1-1 and the conductive part 1-3. The bottom of the conductive part 1-3 is provided with a holding groove for holding the upper half part of the connecting part 1-2, and the lower half part of the connecting part 1-2 extends into the conductive pen point 1-1. The height of the receiving groove may be slightly larger than the upper half of the connecting portion 1-2, i.e. a small amount of space may be left between the top of the connecting portion 1-2 and the top of the receiving groove to prevent the connecting portion 1-2 from being inserted too deeply and damaging the conductive portion 1-3. The lower half part of the connecting part 1-2 is connected with the conductive pen point 1-1 in a non-detachable mode, and the upper half part of the connecting part 1-2 is connected with the conductive part 1-3 in a detachable mode. Specifically, the connection manner of the detachable connection can be, but is not limited to, the following manners:

(1) interference fit: this approach relies primarily on the squeezing force between the outer wall of the connection part 1-2 and the inner wall of the conductive part 1-3, so that the user needs to apply a certain force to pull the conductive nib 1-1 and the connection part 1-2 out of the conductive part 1-3. In this manner, the connection part 1-2 may be a substance having a certain elasticity so as to increase friction between the outer wall of the connection part 1-2 and the inner wall of the conductive part 1-3. In addition, the outer wall of the connecting part 1-2 may be provided with ribs protruding from the connecting part 1-2. Interference fit is achieved by pressing the edges against the inner walls of the conductive parts 1-3.

(2) Thread matching: this method relies mainly on the screw threads machined on the outer wall of the connecting portion 1-2 and the inner wall of the conductive portion 1-3 to make the connection. Specifically, a thread may be formed on the outer wall of the upper half of the connecting portion 1-2, and correspondingly, a thread corresponding to the connecting portion 1-2 may be formed on the inner wall of the receiving groove of the conductive portion 1-3, so that the user can screw the upper half of the connecting portion 1-2 into the receiving groove of the conductive portion 1-3. When the conductive pen point 1-1 needs to be replaced, the connecting part 1-2 is screwed out. In a simpler manner, a screw or a bolt can be used as the connecting part 1-2, and the head of the screw or the bolt is fixed in the conductive pen point 1-1, so that the screw or the bolt is in an inverted state.

The above connection manners are only some of the detachable connection manners, and all possible detachable connection manners should be included in the scope of the present embodiment. In addition, in the present embodiment, the electrical contact between the conductive pen tip 1-1 and the conductive part 1-3 can be achieved directly through the contact between the conductive pen tip 1-1 and the conductive part 1-3, or can be achieved through the connection part 1-2 as the conduction, and in this case, the connection part 1-2 needs to be made of a conductive material.

In this embodiment, the conductive nib 1-1 is a cone structure with a diameter gradually decreasing from top to bottom, and may be made of conductive POM or metal material. The tip part of the conductive pen point 1-1 is in smooth transition so as to prevent the conductive pen point 1-1 from scratching the capacitive screen and increase the wear resistance of the conductive pen point 1-1. Since the conductive tip 1-1 is the most frequently rubbed part in actual use, a conductive and wear-resistant film layer may be coated on the surface of the conductive tip 1-1. In addition, substances with a silencing effect can be doped in the conductive pen point 1-1 on the premise of not influencing the conductive performance of the conductive pen point 1-1, so that noise generated when the conductive pen point 1-1 is contacted with a capacitive screen is reduced.

The side wall of the conductive part 1-3 is sleeved with a conductive part 1-4, the outer side wall of the conductive part 1-4 is sleeved with an emitting part 1-5, and the conductive part 1-3 and the emitting part 1-5 are coaxial. The conducting parts 1-4 can be realized by adopting materials with lighter weight. Wherein, the emitting parts 1-5 are also conductive materials. The conductive part 1-3 and the conductive part 1-4 are connected in a close fit manner, the conductive part 1-4 and the transmitting part 1-5 can be connected in a close fit manner, and in order to facilitate assembly, threaded connection can also be adopted. That is, the outer side wall of the conduction part 1-4 and the inner side wall of the emission part 1-5 are provided with matching threads to realize the connection between the conduction part 1-4 and the emission part 1-5. Meanwhile, a limiting part for limiting the installation position of the transmitting part 1-5 on the conducting part 1-4 can be arranged on the conducting part 1-4, so that the transmitting part 1-5 can transmit part 1-5 or all the conducting parts 1-3 at the optimal position.

Further, in the present embodiment, the pressure sensing portions 1-6 are disposed above the conductive portions 1-4. The conductive pen point 1-1 can drive the conductive part 1-3, the conductive part 1-4 and the transmitting part 1-5 to move towards the direction close to the pressure sensing part 1-6 or away from the pressure sensing part 1-6 under the action of external force or self gravity. That is, when the conductive pen point 1-1 acts on a capacitive screen, a desktop or other objects, the conductive pen point 1-1 is pressed, so that the conductive part 1-3, the conductive part 1-4 and the transmitting part 1-5 are pushed to move together in the direction close to the pressure sensing part 1-6 by the force of the conductive pen point 1-1. When the conductive pen point 1-1 is suspended or not extruded by external force, the conductive part 1-3, the conductive part 1-4 and the transmitting part 1-5 are driven to move together towards the direction far away from the pressure sensing part 1-6 due to the gravity of the conductive pen point. In this embodiment, the pressure sensing portion 1-6 is used for collecting a pressure signal of the conductive pen tip 1-1 under an external force, so as to serve as a basis for the operation of the capacitive pen and other functions, such as thickness of handwriting and smooth track.

Specifically, the pressure-sensitive part 1-6 includes a pressure sensor 1-6-1 and a fixing part 1-6-2. The fixed part 1-6-2 is a cylindrical structure with a closed top. The top of the conducting part 1-4 goes deep into the inside of the fixing part 1-6-2. The conduction part 1-4 can move up and down in the fixing part 1-6-2 under the action of external force. Wherein, the pressure sensor 1-6-1 is arranged inside the fixed part 1-6-2 and above the conducting part 1-4. The fixed surface of the pressure sensor 1-6-1 is fixedly connected with the top of the fixed part 1-6-2, and the detection surface of the pressure sensor 1-6-1 faces the top of the conduction part 1-4.

In this embodiment, the pressure sensor 1-6-1 is divided into a fixing surface and a detection surface. The fixing surface is used for fixing the pressure sensor 1-6-1 on other objects, and the pressure sensor 1-6-1 is fixed in the fixing part 1-6-2 in the embodiment. The fixing part 1-6-2 is a cylindrical structure with a sealed top, the fixing surface of the pressure sensor 1-6-1 can be fixedly connected with the top of the fixing part 1-6-2, and the fixing mode can be dispensing, welding and the like. The detection surface is provided with a detection point, the detection point can be extruded by the conduction part 1-4 in the process that the conduction part 1-4 moves upwards, extrusion force is acquired through extrusion, and pressure information is finally generated through correction in the pressure sensor 1-6-1, as shown in fig. 6. Since the pressure sensor 1-6-1 has a certain detection threshold, if the pressure is too high, the pressure sensor 1-6-1 is easily damaged, and therefore, a certain means is needed to ensure that the pressure sensor 1-6-1 is not subjected to too high pressure on the premise of keeping normal operation. For this, in this embodiment, the side wall of the fixing portion 1-6-2 is provided with a through hole for clipping, and the top side wall of the conducting portion 1-4 is provided with a protrusion. The top of the conduction part 1-4 can penetrate into the fixing part 1-6-2 and clamp the bulge in the clamping through hole. It should be noted that the aperture of the snap-fit through hole is larger than the height of the protrusion of the conducting part 1-4, so as to ensure that the conducting part 1-4 can move up and down in the fixing part 1-6-2, and to limit the position of the conducting part 1-4 moving in the fixing part 1-6-2, so as to prevent the pressure sensor 1-6-1 from being damaged due to the excessive pressure of the conducting part 1-4.

In order to enable the conduction part 1-4 to smoothly go deep into and be clamped in the fixing part 1-6-2, through holes which run in the longitudinal direction and are communicated with the bottom of the fixing part 1-6-2 can be arranged on the opposite positions of the side wall of the fixing part 1-6-2. The through hole can lead the fixed part 1-6-2 to be deformed by the extrusion of the conducting part 1-4 when the conducting part 1-4 is inserted into the fixed part 1-6-2, thereby leading the conducting part 1-4 to be inserted into the fixed part 1-6-2 more smoothly.

In this embodiment, since the detection surface of the pressure sensor 1-6-1 has a high sensitivity, if the position or angle of contact of the conducting portion 1-4 with the detection surface of the pressure sensor 1-6-1 is not in an optimum contact state, the detection deviation of the pressure sensor 1-6-1 is easily caused. Therefore, in order to minimize or avoid the occurrence of errors, the embodiment is provided with the steel sheets 1-6-3 on the top of the conducting parts 1-4, and the top surfaces of the steel sheets 1-6-3 face the detection surface of the pressure sensor 1-6-1.

Specifically, the steel sheet 1-6-3 is arranged on the top of the conducting part 1-4, and the center of the conducting pen point 1-1, the center of the connecting part 1-2, the center of the conducting part 1-3, the center of the conducting part 1-4, the center of the steel sheet 1-6-3, a detection point on a detection surface of the pressure sensor 1-6-1 and the center of the fixing part 1-6-2 are kept on the same straight line. Thus, when the user uses the capacitive pen, the force between the conductive pen point 1-1 and the capacitive screen is transmitted to the detection point on the detection surface of the pressure sensor 1-6-1 along the straight line formed by the centers of the various components, so as to ensure that the pressure is detected by the pressure sensor 1-6-1 at the most proper position and angle. The strength of the steel sheet 1-6-3 can well ensure that the steel sheet 1-6-3 does not deform the steel sheet 1-6-3 when the steel sheet 1-6-3 is in contact with the pressure sensor 1-6-1, and the error of pressure acquisition is avoided or reduced. Further, in order to protect the pressure sensor 1-6-1 more, a buffer portion 1-6-4 may be provided between the fixing surface of the pressure sensor 1-6-1 and the top of the fixing portion 1-6-2. The buffer part 1-6-4 can ensure that the pressure sensor 1-6-1 plays a role of buffer protection when being stressed so as to prevent the pressure sensor 1-6-1 from being damaged due to overlarge stress.

In this embodiment, one of the functions of the conducting part 1-4 is to transmit the pressure received at the conducting pen tip 1-1 to the pressure sensor 1-6-1 by moving up and down in the fixing part 1-6-2 in the above process, so that the pressure sensor 1-6-1 detects the pressure signal. Further, the conductive parts 1-4 also function to shield the conductive parts 1-3 from the transmitting parts 1-5. The conductive part 1-3 receives an excitation signal sent by the capacitive screen, then the excitation signal is sent to a subsequent processor or circuit for processing and then sent to the transmitting part 1-5, and the transmitting part 1-5 transmits the processed signal to the capacitive screen, so that communication between the capacitive pen and the capacitive screen is realized. Based on this, when the conductive part 1-3 and the transmitting part 1-5 are in normal operation, mutual interference may occur due to the close spatial position. Therefore, the embodiment can insulate the conductive part 1-3 and the transmitting part 1-5 through the conductive part 1-4 with the insulation property, so that the conductive part 1-3 and the transmitting part 1-5 cannot interfere with each other during operation, and the accuracy and the anti-interference performance of signal transmission and reception are ensured.

In addition, although the conductive pen tip 1-1 used in the present embodiment is made of a conductive material, the conductive pen tip 1-1 may be made of a non-conductive material, such as plastic. The material adopted by the capacitive touch screen mainly depends on the strength of the conductive parts 1-3 for receiving the excitation signal sent by the capacitive touch screen. In essence, when the conductive pen tip 1-1 is implemented by using a conductive material, the conductive part 1-3 and the conductive pen tip 1-1 may be integrated. In other words, the conductive nib 1-1 may act as an extension of the conductive portion 1-3 in order to bring the conductive portion 1-3 closer to the capacitive screen. In this way, the excitation signal of the capacitive screen can be received with better effect. If the conductive pen point 1-1 is made of non-conductive material, the conductive part 1-3 is relatively far away from the capacitive screen. In this case, if the conductive tip 1-1 is not conductive and the effect of the conductive part 1-3 receiving the excitation signal has no effect, the conductive tip 1-1 may be made of a non-conductive material. On the contrary, if the effect of receiving the excitation signal is reduced, it is still necessary to replace the conductive tip 1-1 with a conductive material.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (10)

1. A capacitive pen is characterized by comprising a pen point and a conductive pen container, wherein the pen point is arranged at the front end of the conductive pen container, a circuit module is arranged in the conductive pen container, and the conductive pen container and the pen point are electrically connected with the circuit module;

the nib includes conductive nib, connecting portion, conductive part, conduction portion, transmission portion and pressure portion, conductive nib with pass through between the conductive part connecting portion fixed connection, the first half of connecting portion deepens extremely in the conductive part, and with the detachable connection of conductive part, the lower half of connecting portion deepens extremely in the conductive nib, and with conductive nib fixed connection, the conductive part with circuit module electricity is connected, the lateral wall cover of conductive part is equipped with the conduction portion, the cover is equipped with the transmission portion on the lateral wall of conduction portion, the top of conduction portion is provided with the pressure portion, conductive nib drives under the exogenic action or self action of gravity conductive part, conduction portion and transmission portion are to being close to the direction of pressure portion or keeping away from the direction motion of pressure portion.

2. The capacitance pen according to claim 1, wherein the bottom of the conductive portion is formed with a receiving groove for receiving the upper half portion of the connecting portion, the inner wall of the receiving groove and the outer wall of the upper half portion of the connecting portion are formed with matching threads, and the connecting portion is connected to the conductive portion by the threads.

3. The stylus of claim 1, wherein the inner wall of the emitting portion and the outer wall of the conducting portion are formed with mating threads, and the emitting portion and the conducting portion are connected by the threads.

4. The capacitance pen according to claim 1, wherein the pressure sensing portion comprises a pressure sensor and a fixing portion, the fixing portion is a cylindrical structure with a closed top, the top of the conducting portion extends into the fixing portion, the conducting portion can move up and down in the fixing portion under the action of external force, the pressure sensor is arranged in the fixing portion and above the conducting portion, a fixing surface of the pressure sensor is fixedly connected with the top of the fixing portion, and a detection surface of the pressure sensor faces the top of the conducting portion.

5. The capacitance pen according to claim 4, wherein a clamping through hole is formed in a side wall of the fixing portion, a protruding portion is arranged on a side wall of the top of the conducting portion, the protruding portion is located in the clamping through hole, and the aperture of the clamping through hole is larger than the height of the protruding portion.

6. The stylus of claim 4, wherein a top of the conductive portion is provided with a steel sheet, and a top surface of the steel sheet faces a detection surface of the pressure sensor.

7. The stylus according to claim 4, wherein a buffer portion is provided between the fixing surface of the pressure sensor and the top of the fixing portion.

8. The capacitive pen according to claim 1, further comprising a key, wherein the conductive pen container is provided with a key through hole, the key is located in the key through hole, and the key is electrically connected with the circuit module.

9. The capacitive pen according to claim 8, wherein the key is arranged at the top of the conductive pen container, the key comprises a key body and a key cap, the key body is arranged in the conductive pen container and electrically connected with the circuit module, the key cap protrudes or is flush with the outer surface of the conductive pen container, the key cap is made of a light-transmitting material, a light source is arranged below the key cap, and the light source is electrically connected with the circuit module.

10. The capacitive pen according to claim 1, wherein the circuit module is further provided with a charging contact, the charging contact is used for connecting an external power supply, so that the circuit module is powered by the external power supply, the side wall of the conductive pen container is provided with a charging through hole, and the external power supply is inserted into the through hole and is electrically connected with the charging contact.

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