Pressure sensing pen

Abstract

The utility model provides a pressure-sensitive pen. The pressure-sensitive pen comprises a pen shell, a sensor and a refill. A mounting channel is formed in the pen shell, a mounting opening communicated with the mounting channel is formed in one end of the pen shell, and a limiting structure is further arranged in the mounting channel. The sensor is arranged at the end, away from the mounting opening, of the mounting channel, and the sensor and the limiting structure are arranged at intervals in the length direction of the mounting channel. The refill is partially mounted in the mounting channel, and at least part of the refill is in clearance fit with the mounting channel; the end, away from the sensor, of the refill is located outside the pen shell, the end, close to the sensor, of the refill is provided with a clamping head, and the limiting structure and the sensor clamp the clamping head in the length direction of the mounting channel. The pressure-sensitive pen can solve the technical problem that an existing pressure-sensitive pen is low in sensitivity.

Description

Technical Field

[0001] The present application relates to the technical field of pressure-sensitive pens, and in particular to a pressure-sensitive pen. Background Art

[0002] A pressure-sensitive pen is a digital pressure-sensitive pen used for writing and drawing. It is usually used together with a digital tablet. The pressure-sensitive pen mainly includes a pen shell, a pen core (or pen tip) installed in the pen shell, and a pressure-sensitive sensor abutting the back of the pen core. When the pressure-sensitive pen is writing, the pen core will be pressed and move slightly backward, and then press the pressure-sensitive sensor. When the pressure-sensitive sensor is pressed, a corresponding electrical signal is generated and transmitted to electronic devices such as touchpads and tablets. Electronic devices such as touchpads and tablets simulate and display the corresponding handwriting lines according to the pressure-sensitive electrical signal.

[0003] In the prior art, the pen refill is fixedly installed by the friction between the pen refill and the pen case or the mounting bracket inside the pen case. However, when the pen refill is under pressure, the friction between the pen refill and the pen case or the mounting bracket will hinder the movement of the pen refill, thereby weakening the signal strength generated by the pressure sensor, resulting in lower sensitivity of the pressure sensitive pen. Utility Model Content

[0004] The embodiment of the present application provides a pressure-sensitive pen to solve the technical problem of low sensitivity of existing pressure-sensitive pens.

[0005] To achieve the above-mentioned purpose, the pressure-sensitive pen proposed in the present application includes a pen shell, a sensor and a pen core. An installation channel is provided in the pen shell, and an installation opening connected to the installation channel is provided at one end of the pen shell, and a limiting structure is also provided in the installation channel. The sensor is provided at one end of the installation channel away from the installation opening, and the sensor and the limiting structure are spaced apart along the length direction of the installation channel. The pen core is partially installed in the installation channel, and the pen core at least partially fits with the installation channel; the end of the pen core away from the sensor is located outside the pen shell, and the end of the pen core close to the sensor is provided with a clamp, and the limiting structure and the sensor clamp the clamp along the length direction of the installation channel.

[0006] Optionally, in one embodiment, the installation channel includes a limiting section and a spacing section connected along its length direction, the inner diameter of the limiting section is smaller than the inner diameter of the spacing section, the inner wall of the limiting section is used to abut against the outer wall of the pen core, and the inner wall of the spacing section is spaced apart from the outer wall of the pen core.

[0007] Optionally, in one embodiment, in the length direction of the installation channel, the extension length of the spacing section is greater than the extension length of the limiting section; and / or the installation opening is connected to the limiting section of the installation channel.

[0008] Optionally, in one embodiment, the pen core includes a contact and a mounting rod, the contact is located outside the pen housing, one end of the mounting rod is connected to the contact, and the other end is provided with the clamp; the maximum outer diameter of the mounting rod is smaller than the inner diameter of the mounting opening and the mounting channel, and the clamp is configured to be able to compress the limiting structure to deform and be clamped between the limiting structure and the sensor, so that the pen core can be installed from the mounting opening into the mounting channel.

[0009] Optionally, in one embodiment, the limiting structure includes a plurality of limiting buckles, the limiting buckles are fixed on the inner wall of the installation channel, and the limiting buckles abut against a side of the clamping head facing away from the sensor.

[0010] Optionally, in one embodiment, a plurality of the limiting buckles are provided, and the plurality of limiting buckles are arranged along the circumferential direction of the installation channel.

[0011] Optionally, in one embodiment, a guide slope is provided on a side of the limiting buckle facing the mounting opening, and the guide slope extends in a direction away from the mounting opening while also inclining in a direction close to the central axis of the mounting channel.

[0012] Optionally, in one embodiment, the mounting channel includes a spacing section between the mounting opening and the limiting structure, an inner wall of the spacing section is spaced apart from an outer wall of the mounting rod, and an inner diameter of the spacing section gradually decreases in a direction away from the mounting opening.

[0013] Optionally, in one embodiment, a protruding height of the limiting buckle relative to the inner wall of the installation channel is greater than or equal to 0.2 mm and less than or equal to 0.3 mm.

[0014] Optionally, in one embodiment, the pressure-sensitive pen further includes a mounting bracket, the mounting bracket is fixed in the pen housing, the mounting channel is formed on the mounting bracket, and the limiting structure and the sensor are both fixed on the mounting bracket.

[0015] The pressure-sensitive pen of the present application has at least the following beneficial effects:

[0016] The pressure-sensitive pen of the present application is provided with an installation channel for installing the pen core in the pen shell, a limiting structure is provided in the installation channel, the limiting structure and the sensor are arranged at intervals along the length direction of the installation channel, and a clamping head is provided at one end of the pen core extending into the installation channel. During assembly, the pen core is installed in the installation channel, and at least part of the pen core is gap-matched with the installation channel. The limiting structure and the sensor clamp the clamping head along the length direction of the installation channel (i.e., the direction in which the pen core moves when pressurized), thereby achieving fixed installation of the pen core and making the friction between the pen core and the inner wall of the installation channel small or even frictionless, avoiding the friction between the pen core and the inner wall of the installation channel to hinder the movement of the pen core, thereby improving the sensitivity of the pressure-sensitive pen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 This is a structural cross-sectional view of an embodiment of the pressure-sensitive pen of the present application;

[0019] Figure 2 This is a structural explosion diagram of an embodiment of the pressure-sensitive pen of the present application;

[0020] Figure 3 A partial structural cross-sectional view of an embodiment of a pressure-sensitive pen of the present application;

[0021] Figure 4 A partial structural cross-sectional view of another embodiment of the pressure-sensitive pen of the present application;

[0022] Figure 5 This is a schematic structural diagram of an embodiment of a pen core in the pressure-sensitive pen of the present application.

[0023] Description of Figure Numbers:

[0024] Label name Label name Label name 100 Pressure-sensitive pen 13 Central axis 32 Mounting rod 10 Pen case 14 Pen case 321 Connection segment 11 Installation channel 15 written 322 Give way segment 111 Limit section 151 Mounting opening 323 Head 112 Interval 16 Pen cavity 40 Mounting Bracket 12 Limiting structure 20 sensor 41 First bracket 121 Limit buckle 30 Refills 42 Second bracket 1211 Guide slope 31 Contact 50 Circuit Board

[0025] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0027] A pressure-sensitive pen is a digital pressure-sensitive pen used for writing and drawing. It is usually used together with a digital tablet. The pressure-sensitive pen mainly includes a pen shell, a pen core (or pen tip) installed in the pen shell, and a pressure-sensitive sensor abutting the back of the pen core. When the pressure-sensitive pen is writing, the pen core will be pressed and move slightly backward, and then press the pressure-sensitive sensor. When the pressure-sensitive sensor is pressed, a corresponding electrical signal is generated and transmitted to electronic devices such as touchpads and tablets. Electronic devices such as touchpads and tablets simulate and display the corresponding handwriting lines according to the pressure-sensitive electrical signal.

[0028] In the prior art, the pen refill is fixedly installed by the friction between the pen refill and the pen case or the mounting bracket inside the pen case. However, when the pen refill is under pressure, the friction between the pen refill and the pen case or the mounting bracket will hinder the movement of the pen refill, thereby weakening the signal strength generated by the pressure sensor, resulting in lower sensitivity of the pressure sensitive pen.

[0029] Therefore, in order to solve the above technical problems, the pressure-sensitive pen of the present application is provided with a limiting structure, and the limiting structure and the sensor clamp one end of the pen core along the moving direction of the pen core, so that the fixed installation of the pen core is achieved, and the friction between the pen core and the pen shell or the mounting bracket is small or even frictionless, thereby avoiding the friction between the pen core and the pen shell or the mounting bracket from hindering the movement of the pen core, thereby improving the sensitivity of the pressure-sensitive pen.

[0030] The pressure-sensitive pen provided in the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0031] like Figure 1 As shown, the pressure-sensitive pen 100 proposed in the present application mainly includes a pen housing 10 , a sensor 20 and a pen core 30 .

[0032] Among them, Figure 2 or Figure 3 As shown, a mounting channel 11 is provided in the pen housing 10 , a mounting opening 151 communicating with the mounting channel 11 is provided at one end of the pen housing 10 , and a limiting structure 12 is further provided in the mounting channel 11 .

[0033] Specifically, in this embodiment, the pen housing 10 includes a pen cover 14 and a pen head 15. The pen head 15 is connected to one end of the pen cover 14, and the pen head 15 and the pen cover 14 can be detachably connected or integrally formed. The pen cover 14 and the pen head 15 together enclose a pen cavity 16, and the pen cavity 16 is used to install other components of the pressure-sensitive pen 100 (such as the mounting bracket 40, the circuit board 50, the battery, the sensor 20, etc.).

[0034] Can be combined Figure 1 The installation channel 11 is used to install the pen core 30, which can be formed by a part of the pen cavity 16 (that is, directly enclosed by the pen shell 10), or it can be enclosed by other components in the pen shell 10, for example, Figure 2 In the structural scheme shown, a mounting bracket 40 is further provided in the pen cavity 16, and the mounting bracket 40 is used to install and fix components such as a circuit board 50, a battery, and a sensor 20, and the mounting bracket 40 is provided with a mounting channel 11 at a position corresponding to the pen tip 15, and the mounting channel 11 extends along the length direction of the pen shell 10. The pen tip 15 is provided with a mounting opening 151 connected to the mounting channel 11, and the mounting opening 151 is used for allowing one end of the pen core 30 to extend out of the pen shell 10 so that the pen core 30 can contact the display screen.

[0035] like Figure 1 or Figure 2 As shown, a limiting structure 12 is further provided in the mounting channel 11. Specifically, the limiting structure 12 is fixed on the inner wall of the mounting channel 11. That is to say, when the mounting channel 11 is directly enclosed by the pen case 10, the limiting structure 12 can be fixed on the pen case 10; when the mounting channel 11 is enclosed by the mounting bracket 40, the limiting structure 12 can be fixed on the bracket.

[0036] You can refer to Figure 1 The limiting structure 12 is mainly used to limit the refill 30 from being separated from the pen housing 10 from the installation opening 151. Therefore, the shape and size of the limiting structure 12 can be flexibly designed according to needs. For example, the shape of the limiting structure 12 can be block-shaped, strip-shaped, plate-shaped, etc., as long as it can limit the refill 30 from being separated from the pen housing 10 from the installation opening 151.

[0037] In addition, the limiting structure 12 can be an independent component, which is fixed in the installation channel 11 during assembly; or, the limiting structure 12 can be integrally formed with the pen housing 10 or the installation bracket 40, and the specific structural form can be flexibly selected according to actual conditions.

[0038] like Figure 2As shown, the sensor 20 is arranged at one end of the installation channel 11 away from the installation opening 151, that is, the sensor 20 is spaced opposite to the installation opening 151, and the sensor 20 and the limiting structure 12 are spaced along the length direction of the installation channel 11. Specifically, in this embodiment, the sensor 20 is used to abut against one end of the pen core 30 located in the pen housing 10, so as to generate a corresponding electrical signal when pressed by the pen core 30. The sensor 20 is also electrically connected to the circuit board 50 installed in the pen housing 10 to transmit the electrical signal generated when pressed to the circuit board 50. The circuit board 50 further processes and analyzes the electrical signal, and the analyzed data will be transmitted to the display device (such as a tablet computer, a digital screen, etc.). The display device judges the user's pressure level based on these data and displays the writing handwriting or pattern accordingly.

[0039] It should be noted here that the specific structure, type, fixing method of the sensor 20 in the pen housing 10, etc. can be flexibly selected according to needs. For example, the sensor 20 can be a resistive pressure sensor 20 or a capacitive pressure sensor 20, as long as it can accurately sense the pressure.

[0040] Crucially, in this embodiment, the sensor 20 and the limiting structure 12 are arranged at intervals along the length direction of the installation channel 11, such as Figure 2 As shown, the length direction of the installation channel 11 is also the length direction of the pen housing 10 and the pen core 30. When the pressure-sensitive pen 100 is writing, the pen core 30 generally moves slightly along its length direction.

[0041] like Figure 1 As shown, the space separated by the sensor 20 and the limiting structure 12 is used to install the clamping head 323 of the pen core 30. Therefore, the spacing between the sensor 20 and the limiting structure 12 in the length direction of the installation channel 11 needs to be designed to match the length of the clamping head 323 of the pen core 30, and the spacing between the sensor 20 and the limiting structure 12 is less than or equal to the length of the clamping head 323 so that the clamping head 323 can be clamped during assembly.

[0042] like Figure 1 As shown, during assembly, the pen core 30 (also called the pen tip) is installed in the installation channel 11, the pen core 30 extends along the length direction of the installation channel 11, and the pen core 30 is at least partially fitted with the installation channel 11 in a clearance to reduce the friction between the pen core 30 and the pen housing 10 or the installation bracket 40.

[0043] It should be noted that when the user uses the pressure-sensitive pen 100 to write, the pressure-sensitive pen 100 is generally tilted, so the pen core 30 will not remain coaxial with the pen housing 10 after being subjected to force, but will be tilted at a certain angle relative to the central axis 13 of the pen housing 10. Therefore, in order to avoid the pen core 30 from tilting too much relative to the pen housing 10, when the pen core 30 is gap-matched with the installation channel 11, the minimum gap between the outer wall of the pen core 30 and the inner wall of the installation channel 11 can be controlled within a certain range, such as within 0.1 mm, or within 0.05 mm.

[0044] Of course, if the process allows, the minimum gap between the outer wall of the refill 30 and the inner wall of the installation channel 11 is as small as possible, so that the refill 30 and the installation channel 11 do not need to be fixed by friction, and the inclination angle of the refill 30 is prevented from being too large when writing.

[0045] like Figure 1 As shown, after the assembly is completed, one end of the pen core 30 away from the sensor 20 is located outside the pen housing 10, and the other end is provided with a clamp 323, and the limiting structure 12 and the sensor 20 clamp the clamp 323 along the length direction of the installation channel 11. Figure 5 In the structural scheme shown, a contact 31 is provided at one end of the pen core 30 extending out of the pen housing 10. The contact 31 is used to contact the display screen. In order to avoid scratching the display screen, the position on the contact 31 for contacting the display screen is spherical, so that it can contact the display screen smoothly and avoid scratching the display screen.

[0046] A clamping head 323 is provided at one end of the pen core 30 located in the pen housing 10, and the clamping head 323 is clamped and fixed directly to the limiting structure 12 and the sensor 20, so that the pen core 30 can be fixed and the pen core 30 and the sensor 20 can be kept in contact. Moreover, because the limiting structure 12 and the sensor 20 clamp the clamping head 323 along the length direction of the installation channel 11, and the length direction of the installation channel 11 is the direction of the small movement generated when the pen core 30 is pressurized, the limiting structure 12 and the sensor 20 used to fix the pen core 30 will not hinder the small movement of the pen core 30, and will not weaken the signal strength generated by the sensor 20, that is, it will not reduce the sensitivity of the pressure-sensitive pen 100, thereby ensuring the sensitivity of the pressure-sensitive pen 100.

[0047] Optionally, in one embodiment, as Figure 4 As shown, the installation channel 11 includes a limiting section 111 and a spacing section 112 connected along its length direction. The inner diameter of the limiting section 111 is smaller than the inner diameter of the spacing section 112. The inner wall of the limiting section 111 is used to abut against the outer wall of the pen core 30, and the inner wall of the spacing section 112 is spaced apart from the outer wall of the pen core 30.

[0048] For details, please combine Figure 1It is understood that in this embodiment, as described above, during the writing process of the pressure-sensitive pen 100, the pen core 30 will be pressed and produce a certain tilt angle. When the pen core 30 is tilted, the inner wall of the limiting section 111 can be used to abut against the pen core 30, thereby limiting the tilt angle of the pen core 30 to be too large, and avoiding the situation where the pen core 30 is too large and causes unclear handwriting or broken handwriting. The inner wall of the spacing section 112 is configured to maintain a gap with the outer wall of the pen core 30, that is, even if the pen core 30 is tilted, the pen core 30 is not easy to contact the inner wall of the spacing section 112, which can reduce the contact with the pen core 30, and then reduce the friction, that is, reduce the obstruction to the movement of the pen core 30 under pressure, and ensure the signal strength generated by the sensor 20.

[0049] It should be noted that the limiting section 111 and the spacing section 112 may each be provided with a Figure 4 As shown), there may also be multiple limit segments 111 and spacing segments 112, respectively. When there are multiple limit segments 111 and spacing segments 112, respectively, in the length direction of the installation channel 11, there may be a spacing segment 112 connected between two adjacent limit segments 111, and there may be a limit segment 111 connected between two adjacent spacing segments 112.

[0050] Further, such as Figure 4 As shown, in the length direction of the installation channel 11, the extension length of the spacing section 112 is greater than the extension length of the limiting section 111, that is, most of the inner wall of the installation channel 11 is spaced apart from the outer wall of the pen core 30, and only a small part of the inner wall is used to abut against the pen core 30 when the pen core 30 is tilted, which can better reduce the friction between the pen housing 10 or the installation bracket 40 and the pen core 30, and further ensure the sensitivity of the pressure-sensitive pen 100.

[0051] Optionally, in one embodiment, as Figure 4 As shown, the limiting section 111 and the spacing section 112 are respectively provided with one, and the mounting opening 151 is connected to the limiting section 111, that is, the limiting section 111 is closer to the mounting opening 151 than the spacing section 112, so that when the pen core 30 is tilted, the tilt angle of the pen core 30 can be better limited, and the contact point of the limiting section 111 on the pen core 30 can be closer to the contact 31, thereby reducing the torque applied to the pen core 30 and avoiding the situation where the pen core 30 is bent or broken due to a large torque.

[0052] Optionally, in one embodiment, as Figure 5 As shown, the refill 30 includes a contact 31 and a mounting rod 32. Figure 1The contact 31 is located outside the pen housing 10, and the contact 31 is used to contact the display screen. One end of the mounting rod 32 is connected to the contact 31, and the other end is provided with a clamping head 323; the maximum outer diameter of the mounting rod 32 is smaller than the inner diameter of the mounting opening 151 and the mounting channel 11, and the clamping head 323 is configured to be able to compress the limiting structure 12 to deform and be clamped between the limiting structure 12 and the sensor 20, so that the pen core 30 can be installed from the mounting opening 151 into the mounting channel 11.

[0053] Specifically, Figure 5 As shown, the mounting rod 32 includes a connecting section 321, a giving section 322 and a clamping head 323 connected in sequence, one end of the connecting section 321 is connected to the contact 31, the other end is connected to the giving section 322, the other end of the giving section 322 is connected to the clamping head 323, and the outer diameter of the connecting section 321 and the outer diameter of the clamping head 323 are set to be the same, and the outer diameter of the giving section 322 is smaller than the outer diameter of the connecting section 321 and the outer diameter of the clamping head 323, as shown in FIG. Figure 1 As shown, when the assembly is completed, the limiting structure 12 is arranged corresponding to the making way section 322 , that is, the making way section 322 is used to make way for the limiting structure 12 .

[0054] That is to say, the outer diameter of the connecting section 321 and the outer diameter of the clamping head 323 are the maximum outer diameters of the mounting rod 32. In the present embodiment, by making the maximum outer diameter of the mounting rod 32 smaller than the inner diameter of the mounting opening 151 and the inner diameter of the mounting channel 11, and the clamping head 323 can compress the limiting structure 12 to deform and be inserted between the limiting structure 12 and the sensor 20, the pen core 30 can be installed from the mounting opening 151 into the mounting channel 11, making the installation of the pen core 30 more convenient.

[0055] Optionally, in one embodiment, as Figure 3 As shown, the limiting structure 12 includes a plurality of limiting buckles 121, which are fixed on the inner wall of the installation channel 11, and the plurality of limiting buckles 121 are arranged along the circumferential direction of the installation channel 11. Specifically, in this embodiment, the limiting buckles 121 may be provided with two, three, four, five or other numbers, and the plurality of limiting buckles 121 are arranged along the circumferential direction of the installation channel 11, that is, after the assembly is completed, the plurality of limiting buckles 121 surround the outside of the yielding section 322 and abut against the clamping head 323, so as to clamp the clamping head 323 together with the sensor 20.

[0056] It can be understood that by making the limiting structure 12 specifically a limiting buckle 121, not only the structure is simple, but also it is convenient for the clamping head 323 to compress and deform the limiting structure 12, thereby facilitating the installation of the pen core 30.

[0057] Further, such as Figure 3As shown, a guiding slope 1211 is provided on the side of the limiting buckle 121 facing the mounting opening 151. The guiding slope 1211 extends in a direction away from the mounting opening 151 and is also inclined in a direction close to the central axis 13 of the mounting channel 11. In this way, when the refill 30 is inserted from the mounting opening 151, the guiding slope 1211 can guide the clamping head 323, so that the clamping head 323 can better compress the limiting buckle 121 to deform and clamp between the limiting buckle 121 and the sensor 20, thereby improving the assembly efficiency.

[0058] Optionally, in one embodiment, please combine Figure 1 and Figure 4 The installation channel 11 includes a spacing section 112 between the installation opening 151 and the limiting structure 12. The inner wall of the spacing section 112 is spaced from the outer wall of the installation rod 32, and the inner diameter of the spacing section 112 gradually decreases in the direction away from the installation opening 151. It can be understood that because the inner diameter of the spacing section 112 gradually decreases in the direction away from the installation opening 151, when the pen core 30 is inserted at an inclined angle and abuts against the inner wall of the spacing section 112, the inclined inner wall of the spacing section 112 can guide the pen core 30, so that the clamping head 323 of the pen core 30 can gradually move between the plurality of limiting buckles 121, and then the clamping head 323 can be more smoothly clamped between the limiting buckle 121 and the sensor 20.

[0059] Optionally, in one embodiment, in the radial direction of the installation channel 11, the protruding height of the limit buckle 121 relative to the inner wall of the installation channel 11 is greater than or equal to 0.2 mm and less than or equal to 0.3 mm. The specific protruding height can be 0.2 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, 0.26 mm, 0.27 mm, 0.28 mm, 0.29 mm, 0.3 mm, etc.

[0060] It can be understood that if the protruding height of the limiting buckle 121 relative to the inner wall of the installation channel 11 is less than 0.2 mm, the limiting buckle 121 may not be able to effectively restrict the pen core 30 from being separated from the pen housing 10, and if the protruding height of the limiting buckle 121 relative to the inner wall of the installation channel 11 is greater than 0.3 mm, it will be more difficult for the user to pull the pen core 30 out of the installation opening 151 when the user needs to replace the pen core 30.

[0061] Therefore, in this embodiment, by making the protruding height of the limiting buckle 121 relative to the inner wall of the installation channel 11 greater than or equal to 0.2 mm and less than or equal to 0.3 mm, it can not only ensure the stable limitation of the pen refill 30, but also make it convenient for the user to pull the pen refill 30 out of the installation port, thereby facilitating the replacement of the pen refill 30.

[0062] Optionally, in one embodiment, as Figure 1As shown, the pressure-sensitive pen 100 further includes a mounting bracket 40 , which is fixed in the pen housing 10 . A mounting channel 11 is formed on the mounting bracket 40 , and the limiting structure 12 and the sensor 20 are both fixed on the mounting bracket 40 .

[0063] Specifically, in this embodiment, the mounting bracket 40 includes a first bracket 41 and a second bracket 42, the first bracket 41 is fixed in the pen housing 10, the sensor 20 is fixed on the circuit board 50, and the circuit board 50 is fixed on the first bracket 41; alternatively, the sensor 20 can be directly fixed on the first bracket 41, and then the sensor 20 is electrically connected to the circuit board 50 through a conductor such as a wire or a conductive sheet. The second bracket 42 is fixed on the first bracket 41, and together with the first bracket 41, the mounting channel 11 is enclosed, and the first bracket 41 and the second bracket 42 are respectively provided with a limiting structure 12, and the limiting structure 12 is integrally formed with the first bracket 41 or the second bracket 42.

[0064] It can be understood that by setting up the mounting bracket 40 and fixing the limiting structure 12 and the sensor 20 on the mounting bracket 40, not only can the distance between the limiting structure 12 and the sensor 20 be better controlled to avoid the situation where the distance between the limiting structure 12 and the sensor 20 is too large or too small due to assembly error, but also the distance between the limiting structure 12 and the sensor 20 can be kept stable, thereby keeping the clamping head 323 tight and improving the installation stability of the pen core 30.

[0065] In the above embodiments, the description of each embodiment has its own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. In the description of this application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0066] The pressure-sensitive pen provided in the embodiment of the present application is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A pressure-sensitive pen, characterized in that: include: A pen case, wherein a mounting channel is provided in the pen case, a mounting opening communicating with the mounting channel is provided at one end of the pen case, and a limiting structure is also provided in the mounting channel; A sensor, wherein the sensor is disposed at one end of the installation channel away from the installation opening, and the sensor and the limiting structure are spaced apart along the length direction of the installation channel; as well as, A pen core, wherein the pen core is partially installed in the installation channel, and at least part of the pen core is gap-matched with the installation channel; an end of the pen core away from the sensor is located outside the pen housing, and an end of the pen core close to the sensor is provided with a clamping head, and the limiting structure and the sensor clamp the clamping head along the length direction of the installation channel.

2. The pressure-sensitive pen according to claim 1, characterized in that: The installation channel includes a limiting section and a spacing section connected along its length direction, the inner diameter of the limiting section is smaller than the inner diameter of the spacing section, the inner wall of the limiting section is used to abut against the outer wall of the pen core, and the inner wall of the spacing section is spaced apart from the outer wall of the pen core.

3. The pressure-sensitive pen according to claim 2, characterized in that: In the length direction of the installation channel, the extension length of the spacing section is greater than the extension length of the limiting section; And / or, the installation opening is communicated with the limiting section of the installation channel.

4. The pressure-sensitive pen according to any one of claims 1 to 3, characterized in that: The pen core comprises a contact and a mounting rod, wherein the contact is located outside the pen housing, one end of the mounting rod is connected to the contact, and the other end is provided with the clamp; The maximum outer diameter of the mounting rod is smaller than the inner diameters of the mounting opening and the mounting channel, and the clamping head is configured to compress the limiting structure to deform and clamp between the limiting structure and the sensor, so that the pen core can be installed from the mounting opening into the mounting channel.

5. The pressure-sensitive pen according to claim 4, characterized in that: The limiting structure includes a limiting buckle, which is fixed on the inner wall of the installation channel, and the limiting buckle abuts against a side of the clamping head away from the sensor.

6. The pressure-sensitive pen according to claim 5, characterized in that: There are multiple limit buckles, and the multiple limit buckles are arranged along the circumferential direction of the installation channel.

7. The pressure-sensitive pen according to claim 5, characterized in that: A guide slope is provided on one side of the limiting buckle facing the installation opening. The guide slope extends in a direction away from the installation opening and is inclined in a direction close to the central axis of the installation channel.

8. The pressure-sensitive pen according to claim 7, wherein: The installation channel includes a spacing section between the installation opening and the limiting structure, the inner wall of the spacing section is spaced apart from the outer wall of the installation rod, and the inner diameter of the spacing section gradually decreases in the direction away from the installation opening.

9. The pressure-sensitive pen according to claim 6, characterized in that: The protruding height of the limiting buckle relative to the inner wall of the installation channel is greater than or equal to 0.2 mm and less than or equal to 0.3 mm.

10. The pressure-sensitive pen according to any one of claims 1 to 3, characterized in that: The pressure-sensitive pen further comprises a mounting bracket, the mounting bracket is fixed in the pen housing, the mounting channel is formed on the mounting bracket, and the limiting structure and the sensor are both fixed on the mounting bracket.

Images