Pressure-sensitive pen

Abstract

The utility model provides a pressure sensing pen which comprises a pen container, a pen point, a pressure sensor and a circuit board, the pen container comprises a clamping piece arranged on the side, facing the pen point, of the circuit board. The clamping piece comprises a first end and a second end in the extending direction of the first plane. In the length direction of the pen container, the pressure sensor is clamped in the clamping piece and is limited at the first end part of the clamping piece; the pen point comprises a main body and a lug boss; the lug boss penetrates through a limiting hole in the second end part of the clamping piece and is in contact with the pressure sensor; a first interval is formed between the main body and the clamping piece, and a second interval is formed between the part, corresponding to the second end part, of the pressure sensor and the clamping piece in the length direction of the pen container; the pen point is stressed to move relative to the pen container to drive the pressure sensor to deform in the second end part; the pressure sensor generates pressure sensing electric signals based on deformation and transmits the pressure sensing electric signals to the circuit board, and the pressure sensing pen is simple in structure, does not need to adopt a complex circuit, and is better in pressure detection effect.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic pens, in particular to a pressure-sensitive pen. Background Art

[0002] In the prior art, in the structure of an active electronic pen, a pressing plate is provided between the pressure sensor and the pen tip. The pressing plate acts as a lever to first transmit the pressure on the pen tip to the pressing plate, and then amplifies the pressure on the pen tip through the pressing plate and transmits it to the pressure sensor. The pressure sensor is used to detect the pressure amplified and transmitted through the pressing plate. However, in the prior art, the contact area between the tail of the pen tip and the pressing plate, and between the pressing plate and the pressure sensor are both large. When the pen tip is subjected to force, it pushes the entire pressing plate and the entire pressure sensor to move toward the tail end of the electronic pen. This makes the external force uniformly transmitted from the tail of the pen tip to the pressure sensor through the pressing plate relatively small. Combined with the limitation of the sensing accuracy of the pressure sensor used in the active electronic pen in the prior art, the active electronic pen has the problem of low pressure detection sensitivity.

[0003] In the prior art, most people choose to use pressure-sensitive elements with more complex detection circuits or more expensive pressure-sensitive elements to improve the pressure detection sensitivity of active electronic pens. However, there are problems such as complex circuit structures and high costs, which is not conducive to the production cost of active electronic pens. Utility Model Content

[0004] Based on this, it is necessary to provide a pressure-sensitive pen with a simple circuit structure, low cost and high detection sensitivity to address the problems of complex circuit structure and high cost of pressure-sensitive pens.

[0005] A pressure-sensitive pen comprises a pen barrel, and a pen tip, a pressure sensor and a circuit board which are sequentially arranged inside the pen barrel along the length direction of the pen barrel; the pressure sensor is electrically connected to the circuit board;

[0006] The pen holder includes a holder arranged on the side of the circuit board facing the pen tip, and the holder includes a first end and a second end; the first end and the second end are connected along the extension direction of the first plane; the extension direction of the first plane is perpendicular to the length direction of the pen holder;

[0007] Along the length direction of the pen barrel, the pressure sensor is clamped in the clamping member, and the pressure sensor is limited at the first end; the second end includes a limiting hole, and the limiting hole passes through the second end along the length direction of the pen barrel;

[0008] The pen tip comprises a main body and a raised portion which are connected along the length direction of the pen barrel, the raised portion is located on the side of the main body facing the pressure sensor, and the raised portion contacts the pressure sensor through the limiting hole; a first interval is provided between the main body and the holder, and a second interval is provided between a portion of the pressure sensor corresponding to the second end and the holder along the length direction of the pen barrel;

[0009] The pen tip is displaced relative to the pen barrel by force, driving the pressure sensor to deform in the second end; wherein the pressure sensor generates a pressure-sensitive electrical signal based on the deformation and transmits it to the circuit board.

[0010] In one embodiment, along the length direction of the pen holder, the clamping member includes a first clamping plate and a second clamping plate that are relatively spaced apart, the first clamping plate is located on a side of the second clamping plate facing the circuit board; the pressure sensor is clamped between the first clamping plate and the second clamping plate;

[0011] The first holding plate includes a hollow portion penetrating the pen barrel along the length direction thereof, and the limiting hole penetrating the second holding plate along the length direction of the pen barrel;

[0012] The circuit board is in electrical contact with the pressure sensor via the hollow portion.

[0013] In one of the embodiments, along the length direction of the pen holder, the orthographic projection area of ​​the hollow portion on the first plane is larger than the orthographic projection area of ​​the limiting hole on the first plane.

[0014] In one of the embodiments, an elastic filling piece is included between at least the pressure sensor located in the second end and the first holding plate.

[0015] In one embodiment, the elastic filling member is a spring or rubber.

[0016] In one of the embodiments, a side surface of the circuit board facing the pressure sensor includes a first terminal and a second terminal, and the first terminal and the second terminal are respectively electrically connected to the surface of the pressure sensor through the hollow portion; wherein the first terminal and the second terminal are spaced apart along the extension direction of the first plane.

[0017] In one of the embodiments, along the extension direction of the first plane, a third gap is included between the protruding portion and the inner side wall of the second holding plate.

[0018] In one of the embodiments, along the length direction of the pen holder, the orthographic projection of the protrusion on the first plane is located within the orthographic projection of the main body on the first plane.

[0019] In one embodiment, the orthographic projection area of ​​the protrusion on the first plane is S1, the orthographic projection area of ​​the main body on the first plane is S2, and S1≤(S2 / 2).

[0020] In one embodiment, the pen holder further includes a limiting member located on a side of the holding member away from the circuit board, and the limiting member surrounds the main body in an extension direction of the first plane; and a fourth space is included between the main body and the side wall of the limiting member.

[0021] The pressure-sensitive pen provided by the utility model is provided with a pen tip, a pressure sensor and a circuit board in sequence along the length direction of the pen barrel. The pen barrel also includes a holder arranged on the side of the circuit board facing the pen tip, and the holder includes a first end and a second end connected along the extension direction of the first plane; the pressure sensor is limited at the first end, and the second end includes a limiting hole penetrating it along the length direction of the pen barrel; the pen tip includes a main body and a raised portion arranged in sequence along the length direction of the pen barrel, and the raised portion contacts the pressure sensor through the limiting hole; only the raised portion of the pen tip is arranged to contact the pressure sensor through the limiting hole, so that the contact area between the tail end of the pen tip and the pressure sensor is relatively small, and the small contact area is conducive to increasing the pressure transmitted by the pen tip received by the pressure sensor, so that when the pressure-sensitive pen is used, the pressure of the pen tip can be directly transmitted to the pressure sensor through the tail end of the pen tip, and the pressure is amplified as much as possible while being transmitted. At the same time, a first interval is provided between the pressure-sensitive pen body and the holder, and a second interval is provided between the portion of the pressure sensor corresponding to the second end and the holder along the length direction of the pen barrel; the pen tip is displaced relative to the pen barrel by force, driving the pressure sensor to deform in the second end; wherein the pressure sensor generates a pressure-sensitive electrical signal based on the deformation and transmits it to the circuit board; that is, the pressure sensor is provided in the holder, and only a movable space of the second interval along the length direction of the pen barrel is reserved at the second end, and the side of the pressure sensor that is not in contact with the raised portion at the tail end of the pen tip is fixedly held at the first end, and after the pen tip is displaced relative to the pen barrel after being subjected to force, it is beneficial to further enhance the pressure transmitted from the pen tip sensed by the pressure sensor, and is beneficial to enhance the accuracy and sensitivity of the pressure-sensitive pen in detecting the pressure exerted on the pen tip; that is, the pressure sensor provided in the utility model directly acts as a lever, and amplifies the pressure exerted on the pen tip when the pressure-sensitive pen is in use, that is, the utility model provides a pressure-sensitive pen with a simple structure, no need to adopt a complex circuit structure, but better pressure detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of a pressure-sensitive pen in an embodiment of the utility model is shown;

[0023] Figure 2The utility model is shown Figure 1 A schematic diagram of the structure of the pressure-sensitive pen in the illustrated embodiment;

[0024] Figure 3 The utility model is shown Figure 1 A schematic cross-sectional view of AA' in the illustrated embodiment.

[0025] Description of reference numerals:

[0026] 100. Pressure-sensitive pen, 10. Pen holder, 11. Holding member, 12. First holding plate, 121. First sub-holding member, 122. Second sub-holding member, 13. Second holding plate, 111. First end portion, 112. Second end portion, 14. Hollow portion, 15. Limiting hole, 16. Limiting member, 20. Pen tip, 21. Raised portion, 22. Tip, 23. Main body, 30. Pressure sensor, 40. Circuit board, 41. First terminal, 42. Second terminal, D1. First interval, D2. Second interval. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0028] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly defined and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this utility model are only for illustrative purposes and do not represent the only implementation method.

[0033] In the prior art, the contact area between the tail of the pen tip and the pressure plate, and between the pressure plate and the pressure sensor is very large. When the pen tip is subjected to force, it will push the entire pressure plate and the entire pressure sensor to move toward the tail end of the electronic pen. This will make the external force uniformly transmitted from the tail of the pen tip to the pressure sensor through the pressure plate relatively small. Combined with the limitations of the sensing accuracy of the pressure sensor used in the active electronic pen in the prior art, the active electronic pen will have the problem of low pressure detection sensitivity.

[0034] In the prior art, most people choose to use pressure-sensitive elements with more complex detection circuits or more expensive pressure-sensitive elements to improve the pressure detection sensitivity of active electronic pens. However, this method will make the internal structure of the electronic pen more complex, and will also make its manufacturing process more cumbersome and the manufacturing cost higher. Therefore, there is an urgent need to provide a pressure-sensitive pen with a simple structure, no need for complex circuit structure, low manufacturing cost and high detection sensitivity.

[0035] Figure 1 A schematic diagram of a pressure-sensitive pen in an embodiment of the utility model is shown. Figure 2 The utility model is shown Figure 1 A schematic diagram of the structure of the pressure-sensitive pen in the embodiment shown, Figure 3 The utility model is shown Figure 1 A schematic cross-sectional view of AA' in the embodiment shown, Figure 2 and Figure 3 These are schematic diagrams of the pressure-sensitive pen when not in use. Please refer to Figure 1-Figure 3 , a pressure-sensitive pen 100 provided by an embodiment of the utility model comprises a pen barrel 10 and a pen tip 20, a pressure sensor 30 and a circuit board 40 sequentially arranged inside the pen barrel 10 along the length direction X of the pen barrel 10; the pressure sensor 30 and the circuit board 40 are electrically connected;

[0036] The pen holder 10 includes a holder 11 disposed on a side of the circuit board 40 facing the pen tip 20, and the holder 11 includes a first end 111 and a second end 112; the first end 111 and the second end 112 are connected along an extension direction of a first plane; the extension direction of the first plane is perpendicular to the length direction of the pen holder 10;

[0037] Along the length direction X of the pen barrel 10 , the pressure sensor 30 is clamped in the clamping member 11 , and the pressure sensor 30 is limited at the first end 111 ; the second end 112 includes a limiting hole 15 , and the limiting hole 15 passes through the second end 112 along the length direction of the pen barrel 10 ;

[0038] The pen tip 20 includes a main body 23 and a protrusion 21 which are connected along the length direction X of the pen barrel 10. The protrusion 21 is located on the side of the main body 23 facing the pressure sensor 30, and the protrusion 21 contacts the pressure sensor 30 through the limiting hole 15. A first interval D1 is included between the main body 23 and the holder 11. A second interval D2 is included between the portion of the pressure sensor 30 corresponding to the second end 112 and the holder 11 along the length direction X of the pen barrel 10.

[0039] The pen tip 20 is displaced relative to the pen barrel 10 by force, driving the pressure sensor 30 to deform in the second end portion 112 ; wherein the pressure sensor 30 generates a pressure-sensitive electrical signal based on the deformation and transmits it to the circuit board 40 .

[0040] Specifically, the utility model provides a pressure-sensitive pen 100, which has a writing function. The pressure-sensitive pen 100 includes a pen barrel 10 for a user to hold in hand. Along the length direction X of the pen barrel 10, a pen tip 20, a pressure sensor 30 and a circuit board 40 are sequentially arranged inside the pen barrel 10. The pen barrel 10 is used to carry the pen tip 20, the pressure sensor 30 and the circuit board 40, wherein the pressure sensor 30 and the circuit board 40 are directly electrically connected, the pressure sensor 30 is used to transmit a signal (pressure-sensitive electrical signal) through deformation, and the circuit board 40 is used to receive the signal emitted by the pressure sensor 30, analyze and identify and issue instructions; most of the structure of the pen tip 20 is located inside the pen barrel 10, and a small part of the structure leaks out of the pen barrel 10, so as to facilitate the interaction between the pen tip 20 and the device that can be used by the pressure-sensitive pen 100.

[0041] Among them, the pen barrel 10 of the pressure-sensitive pen 100 provided by the utility model includes a clamping member 11 arranged on the side of the circuit board 40 facing the pen tip 20. The clamping member 11 can be formed by the inner wall of the pen barrel 10 protruding toward the inner side of the pen barrel 10, and is used to clamp the pressure sensor 30; the clamping member 11 can also be fixedly connected to the inner wall of the pen barrel 10, as long as it can achieve stable clamping of the pressure sensor 30; that is, the clamping member 11 can be selected to be fixed to the inner wall of the pen barrel 10 after being manufactured separately, or the clamping member 11 and the inner wall of the pen barrel 10 can be manufactured using an integrated molding process. Specifically, in order to clearly explain the specific structure of the pressure-sensitive pen 100 in the present application, the holding piece 11 is divided into a first end 111 and a second end 112 along the extension direction of the first plane, and the first end 111 and the second end 112 are connected, and no other area is included in the middle; specifically, it can be set that the first end 111 and the second end 112 are connected along the extension direction of the first plane (not shown), and the extension direction of the first plane is perpendicular to the length direction of the pen barrel 10. The first plane is a plane structure used to illustrate the setting position of some structures in the pressure-sensitive pen 100, and is not a real structure belonging to the pressure-sensitive pen 100.

[0042] Based on this, along the length direction X of the pen barrel 10, the pressure sensor 30 is clamped in the clamping member 11, and the pressure sensor 30 is limited to the first end 111 of the clamping member 11, that is, the pressure sensor 30 contacts both inner side surfaces of the clamping member 11 in the length direction X in the first end 111, so that the pressure sensor 30 is stably fixed to the first end 111 of the clamping member 11, so as to achieve the fixation of the pressure sensor 30 in the internal position of the pen barrel 10, which is conducive to ensuring the stability of the internal structural parts of the pressure-sensitive pen 100. A limiting hole 15 is provided in the second end 122 of the clamping member 11, and the limiting hole 15 can be specifically a hole structure formed by penetrating the second end 112 along the length direction X of the pen barrel 10.

[0043] Along the length direction X of the pen barrel 10, the pen tip 20 includes a main body 23 and a raised portion 21 which are connected in sequence, and the raised portion 21 is located on the side of the main body 23 facing the pressure sensor 30, wherein the main body 23 includes a tip 22 that protrudes from the outside of the pen barrel, and the tip 22 is the end of the pressure-sensitive pen 100 that contacts the corresponding interactive terminal surface when being used, for example, the end that contacts the screen of an interactive smart tablet. Therefore, the tip 22 is equivalent to at least a portion of the structure of the main body 23 that protrudes from the outside of the pen barrel 10, so as to facilitate interactive use with the terminal surface; and another portion of the structure of the main body 23 connected to the tip 22, and the raised portion 21 can be optionally arranged to be both placed inside the pen barrel 10, and are used to surround at least part of the main body 23 and the raised portion 21 through the pen barrel 10, so as to ensure the position stability of the pen tip 20 inside the pen barrel 10, avoid the problem of angle deviation of the pen tip 20 during use, and help to ensure the use effect of the pressure-sensitive pen 100. Along the length direction X of the pen barrel 10, the raised portion 21 of the pen tip 20 is arranged to pass through the second end portion 112 of the holding member 11 facing the pen tip 20, so that the side surface of the raised portion 21 away from the tip 22 can contact the side surface of the pressure sensor 30 facing the pen tip 20 after passing through the limiting hole 15 of the second end portion 112; it should be supplemented that forming the limiting hole 15 only at the second end portion 122 is an optional embodiment provided by the present application, but the present application is not limited thereto, that is, setting the raised portion 21 to pass through the second end portion 112 of the holding member 11 is only an optional embodiment provided by the present application. In an optional implementation, it is also possible to select that most of the protrusion 21 penetrates the second end 112 of the holder 11, but a small part penetrates the first end 111 adjacent to the second end 112 of the holder 11 and then contacts the surface of the pressure sensor 30 on the side facing the pen tip 20. As long as it is ensured that most of the protrusion 21 penetrates the second end 112 of the holder 11 and contacts the pressure sensor 30, when the pressure-sensitive pen 100 is in use, more pressure will be applied to the surface of the pressure sensor 30 corresponding to the second end 112 after the pen tip 20 is pressed down. Among them, the position (limiting hole 15) of the holder 11 penetrated by the protrusion 21 will further improve the stability of the protrusion 21 in the pen barrel 10.

[0044] When the pressure-sensitive pen 100 is in use, the tip 22 of the pen tip 20 will contact the screen of the terminal, and pressure will be applied to the tip 22. Therefore, the pressure-sensitive pen 100 will have different presentation states when in use and when not in use. Specifically, the pressure-sensitive pen 100 provided in the embodiment of the utility model, when in a non-use state, along the length direction X of the pen barrel 10, a first gap D1 may be included between the main body 23 and the side surface of the holder 11 away from the circuit board. The first gap D1 can meet the activity space required for the pen tip 20 to move toward the side of the circuit board 40 after being subjected to force. At the same time, along the length direction X of the pen barrel 10, the pressure sensor 23 may be provided at the same time. The portion of the pressure sensor 30 corresponding to the second end 112 and the holding member 11 include a second interval D2, wherein, when the pen tip 20 is not under pressure, the second interval D2 is located between the side surface of the pressure sensor 30 facing the circuit board 40 and the holding member 11, and the second interval D2 can meet the activity space required for the pressure sensor 30 that is pushed to move toward the side of the circuit board 40 in the second end 112 after the pen tip 20 is subjected to force. Combined with the fact that the pressure sensor 30 is limited at the first end 111, the pressure transmitted from the pen tip 20 received by the pressure sensor 30 can be amplified, which is beneficial to improving the pressure sensing monitoring effect of the pressure sensor 30.

[0045] The pressure-sensitive pen 100 provided by the embodiment of the utility model, when in use, the pen tip 20 will be displaced relative to the pen barrel 10 due to the force, specifically, the pen tip 20 will move toward the side of the circuit board 40, at this time, the first interval D1 is compressed along the length direction X of the pen barrel 10, and even the main body 23 of the pen tip 20 and the side surface of the holder 11 away from the circuit board 40 will be in contact, and at the same time, the specific position of the second interval D2 along the length direction X of the pen barrel 10 will also change, for example, the second interval D2 will be changed from being located between the side surface of the pressure sensor 30 facing the circuit board 40 and the holder 11 to being located between the side surface of the pressure sensor 30 away from the circuit board 40 and the holder 11; that is, the pressure sensor 30 is displaced toward the side of the circuit board 40 in the area where the second end 112 is located due to the thrust transmitted by the pen tip 20, so as to drive the pressure sensor 30 to deform in the area where the second end 112 is located.

[0046] Since the pressure sensor 30 is an integral part, when the pressure sensor 30 is subjected to the pressure transmitted from the pen tip 20, so that the pressure sensor 30 moves from the pen tip 20 to the side of the circuit board 40, the side of the pressure sensor 30 fixed by the clamping member 11 of the first end 111 will be subjected to greater pressure, that is, the pressure-sensitive pen 100 provided by the utility model directly acts as a lever through the pressure sensor 30, and the pressure received by the pen tip 20 when the pressure-sensitive pen 100 is in use is amplified after being transmitted to the pressure sensor 30. In addition, the utility model does not set the entire area of ​​the rear end of the pen tip 20 to contact the surface of the side of the pressure sensor 30 away from the circuit board 40, that is, the corresponding cross-sectional area of ​​the main body 23 is not set to contact the pressure sensor 30, but only the protrusion 21 in the rear end of the pen tip 20 is set to contact the surface of the side of the pressure sensor 30 away from the circuit board 40, which makes the contact area between the rear end of the pen tip 20 and the pressure sensor 30 relatively small, and the small contact area is conducive to increasing the pressure transmitted by the pen tip 20 received by the pressure sensor 30, so that the pressure-sensitive pen 100 can be used to control the pressure sensor 30. When the pen tip 20 is in use, the pressure of the pen tip 20 can be directly transmitted to the pressure sensor 30 through the raised portion 21 at the rear end of the pen tip 20, and the lever structure composed of the pressure sensor 30 and the clamping member 11 can amplify the pressure as much as possible while transmitting. Therefore, the pressure-sensitive pen 100 provided by the utility model has a simple structure, does not increase the complexity of the circuit structure in the pressure-sensitive pen 100, and does not use a high-precision and high-priced pressure sensor 30, thereby improving the accuracy and sensitivity of the pressure-sensitive pen 100 in detecting the pressure applied to the pen tip 20.

[0047] That is, the structure of the pressure-sensitive pen 100 provided by the utility model fixes the pressure sensor 30 in the holder 11, one end of the pressure sensor 30 is tightly fixed to the first end 111 in the holder 11 without a gap, and a gap is left at the other end (the second end 112), that is, the above-mentioned second interval D2. By designing the pen tip 20 with a special-shaped tail end (protrusion 21), the force is directly applied to the movable end of the pressure sensor 30, that is, the force is applied to the surface of the pressure sensor 30 in the area corresponding to the second end 112. Since the other end (the first end 111) is firmly fixed, the lever principle can be used to increase the force and deformation of the pressure sensor 30 on the side of the first end 111 to increase the signal transmission strength, thereby obtaining a pressure-sensitive pen 100 with better pressure detection effect.

[0048] Please continue to refer to Figure 2 and Figure 3In an exemplary embodiment, along the length direction X of the pen holder 10, the clamping member 11 includes a first clamping plate 12 and a second clamping plate 13 that are relatively spaced apart, and the first clamping plate 12 is located on the side of the second clamping plate 13 facing the circuit board 40; the pressure sensor 30 is clamped between the first clamping plate 12 and the second clamping plate 13;

[0049] The first holding plate 12 includes a hollow portion 14 penetrating the pen barrel 10 along the length direction X, and the limiting hole 15 penetrates the second holding plate 13 along the length direction X of the pen barrel 10;

[0050] The circuit board 40 is in electrical contact with the pressure sensor 30 via the hollow portion 14 .

[0051] Specifically, the utility model also provides an optional implementation scheme, in which a clamping member 11 includes a first clamping plate 12 and a second clamping plate 13, and the first clamping plate 12 and the second clamping plate 13 are arranged relatively spaced apart along the length direction X of the pen holder 10, so as to reserve a space for placing the pressure sensor 30 between the first clamping plate 12 and the second clamping plate 13, thereby fixing the pressure sensor 30 inside the pen holder 10 of the pressure sensitive pen 100.

[0052] Furthermore, along the length direction X of the pen barrel 10, the utility model provides an optional implementation mode, in which the first holding plate 12 is provided to include a hollow portion 14 extending through the thickness thereof, and the second holding plate 13 is provided to include a limiting hole 15 extending through the thickness thereof, so that the pressure sensor 30 can expose a surface for contacting the circuit board 40 through the hollow portion 14, so that the circuit board 40 can be electrically connected to a surface of the pressure sensor 30 on a side away from the pen tip 20 through the hollow portion 14, so that the sensing signal (pressure-sensitive electrical signal) of the pressure sensor 30 can be transmitted to the circuit board 40; at the same time, the surface for contacting the pen tip 20 is exposed through the limiting hole 15, so that the raised portion 21 of the pen tip 20 can contact a surface of the pressure sensor 30 on a side away from the circuit board 40 through the limiting hole 15, so that the pressure exerted on the pen tip 20 when the pressure-sensitive pen 100 is in use can be transmitted to the pressure sensor 30.

[0053] It should also be added that, since the first holding plate 12 includes a hollow portion 14 that penetrates the thickness of the pen holder 10 along the length direction X, based on this, the utility model provides an optional implementation mode, that is, along the extension direction of the first plane, the first holding plate 12 can be specifically configured to include a first sub-holding member 121 and a second sub-holding member 122 that are relatively arranged; that is, the first sub-holding member 121 and the second sub-holding member 122 are used to form the overall structure of the first holding plate 12, and the utility model does not specifically limit whether the first sub-holding member 121 and the second sub-holding member 122 are connected. The first sub-holding member 121 and the second sub-holding member 122 can be connected according to the needs, or the first sub-holding member 121 and the second sub-holding member 122 can be configured to have a gap space in the extension direction of the first plane, that is, they are not in contact. For example, the first sub-holding member 121 can be configured to be located only at the first end 111 mentioned above, and the second sub-holding member 122 can be configured to be located only at the second end 112 mentioned above.

[0054] When the pressure-sensitive pen 100 is in use, the tip 22 of the pen tip 20 will contact the screen of the terminal, and pressure will be applied to the tip 22. Therefore, the pressure-sensitive pen 100 will have different presentation states when in use and when not in use. Therefore, in the pressure-sensitive pen 100 provided in the embodiment of the utility model, when it is in a non-use state, the side surface of the pressure sensor 30 away from the pen tip 20 can be specifically presented as being in contact with the first sub-clamping component 121 and not in contact with the second sub-clamping component 122, that is, there is a gap space (second interval D2) between the side surface of the pressure sensor 30 away from the pen tip 20 and the second sub-clamping component 122, and the side surface of the pressure sensor 30 close to the pen tip 20 is completely in contact with the second clamping plate 13, so that the pressure sensor 30 is clamped between the second clamping plate 13 and the first sub-clamping component 121 of the first clamping plate 12, and the pressure sensor 30 has a movable space (second interval D2) between the second clamping plate 13 and the second sub-clamping component 122 of the first clamping plate 12; at the same time, the side of the main body 23 of the pen tip 20 close to the clamping component 11 is set to be not in contact with the second clamping plate 13, so that there is also a movable space (first interval D1) between the main body of the pen tip 20 and the second clamping plate 13.

[0055] Furthermore, in the pressure-sensitive pen 100 of the present invention, when the pressure-sensitive pen 100 is in use, when the pen tip 20 contacts the terminal device using the pressure-sensitive pen 100, contact pressure is generated between the pen tip 20 and the terminal device using the pressure-sensitive pen 100, and the pressure forces the pen tip 20 to move toward the circuit board 40, so that the main body 23 and the raised portion 21 of the pen tip 20 also move toward the second holding plate 13, and further the pressure sensor 30 contacting the raised portion 21 of the pen tip 20 moves from the second holding plate 13 to the second sub-holding member 122. side movement; that is, one side of the pressure sensor 30 is fixed by the second holding plate 13 and the first sub-holding piece 121, and the other side of the pressure sensor 30 is subjected to the pressure transmitted by the pen tip 20, so that the pressure sensor 30 moves from the second holding plate 13 to the second sub-holding piece 122, so that the first interval D1 is compressed, and the spatial position of the second interval D2 is transferred from between the pressure sensor 30 and the first holding plate 12 to between the pressure sensor 30 and the second holding plate 13, so that the pressure sensor 30 can sense the pressure exerted on the pen tip 20 of the pressure sensitive pen 100 during use.

[0056] Please continue to refer to Figure 2 and Figure 3 In an exemplary embodiment, along the length direction X of the pen holder 10 , the orthographic projection area of ​​the hollow portion 14 on the first plane is larger than the orthographic projection area of ​​the limiting hole 15 on the first plane.

[0057] Specifically, on the basis of setting the first holding plate 12 to include a hollow portion 14 passing through the pen barrel 10 in the length direction X, and the second holding plate 13 to include a limiting hole 15 passing through the pen barrel 10 in the length direction X, the utility model provides an optional setting method, that is, the hollow area of ​​the hollow portion 14 is set to be larger than the hollow area of ​​the limiting hole 15, that is, the orthographic projection area of ​​the hollow portion 14 on the first plane is larger than the orthographic projection area of ​​the limiting hole 15 on the first plane; in this way, the area of ​​the limiting hole 15 is set to be smaller, so that the raised portion 21 of the pen tip 20 set through the limiting hole 15 can be stabilized in the limiting hole 15 during the use of the pressure-sensitive pen 100, so as to improve the use stability of the pen tip 20, and it is also beneficial to ensure the pressure sensing stability of the pressure sensor 30 in contact with the pen tip 20.

[0058] At the same time, such a configuration can also make the contact area between the protrusion 21 and the pressure sensor 30 as small as possible. The small contact area is conducive to increasing the pressure transmitted from the pen tip 20 received by the pressure sensor 30. That is, the smaller the contact area, the more obvious the force on the pen tip 20 sensed by the pressure sensor 30, which is conducive to further improving the detection accuracy and sensitivity of the pressure sensor 30, so as to increase the transmission strength of the relevant electrical signals in the circuit board 40 of the pressure-sensitive pen 100.

[0059] Please continue to refer to Figure 2 and Figure 3 In an exemplary embodiment, along the extension direction of the first plane, a third gap is included between the protrusion 21 and the inner side wall of the second holding plate 13 .

[0060] Specifically, in order to ensure the smooth movement of the protrusion 21 in the limiting hole 15, a third interval can be optionally provided between the protrusion 21 and the second holding plate 13 where the limiting hole 15 is located, so as to avoid excessive friction between the protrusion 21 of the pen tip 20 and the second holding plate 13, which causes the pen tip 20 to move poorly toward the side of the pressure sensor 30 when under pressure. A small amount of gap space (the third interval) is provided to the protrusion 21 to achieve a good movement effect relative to the inner wall of the second holding plate 13, so as to ensure the smoothness of the use of the pressure-sensitive pen 100, and also to ensure that the pressure sensor 30 can sense the corresponding stable pressure during the use of the pressure-sensitive pen 100.

[0061] Please continue to refer to Figure 2 and Figure 3 It should also be emphasized that the pen tip 20 in the pressure-sensitive pen 100 provided in the present application can be configured such that the projection of the protrusion 21 of the pen tip 20 on the first plane is located within the projection of the main body 23 on the first plane, that is, along the extension direction of the first plane, the outer edge of the protrusion 21 will not exceed the outer edge of the main body 23, for example Figure 3 As shown, it can be specifically set to overlap the outer edge of the raised portion 21, where the second end 112 is away from the first end 111, and the corresponding side edge of the main body 23, where the second end 112 is away from the first end 111, to facilitate the production of the overall structure of the pen tip 20, and also to facilitate the production of the pen barrel 10 surrounding the pen tip 20, thereby reducing the complexity of producing the pen tip 20 and the pen barrel 10, and facilitating the production efficiency of the pressure-sensitive pen 100.

[0062] Please continue to refer to Figure 2 and Figure 3 In an exemplary embodiment, the orthographic projection area of ​​the protrusion 21 on the first plane is S1, the orthographic projection area of ​​the main body 23 on the first plane is S2, and S1≤(S2 / 2).

[0063] Specifically, the utility model also provides an optional implementation method, that is, on the basis of setting a small-area raised portion in the pen tip 20 to contact the pressure sensor 30 to increase the pressure transmitted from the pen tip 20 and received by the pressure sensor 30, it is possible to further set the raised portion 21 of the pen tip 20 to have an orthographic projection area on the first plane equal to half of the orthographic projection area of ​​the main body 23 on the first plane, so that the contact area between the raised portion 21 and the pressure sensor 30 can be as equal as possible to the contact area between the main body 23 and the second holding plate 13, so that after the pen tip 20 is subjected to force during use, the force dispersed between the contact surface of the raised portion 21 and the pressure sensor 30 and the force between the contact area of ​​the main body 23 and the second holding plate 13 can be equal, thereby avoiding the situation where the pen tip 20 cannot maintain a vertical state during use due to uneven force, and avoiding the problem of poor use effect caused by the bending of the pen tip 20, which is beneficial to improving the use effect of the pressure sensitive pen 100.

[0064] In addition, it is also possible to set the orthographic projection area of ​​the raised portion 21 of the pen tip 20 on the first plane to be slightly smaller than half of the orthographic projection area of ​​the main body 23 on the first plane. In this way, the contact area between the raised portion 21 and the pressure sensor 30 can be as small as possible, so as to further make the raised portion 21 of a small area in the pen tip 20 contact with the pressure sensor 30, thereby increasing the pressure transmitted from the pen tip 20 received by the pressure sensor 30, which is beneficial to further improve the use effect of the pressure-sensitive pen 100.

[0065] Please continue to refer to Figure 2 and Figure 3 In an exemplary embodiment, the pen holder 10 further includes a limiting member 16 located on the side of the holding member 11 away from the circuit board 40, and the limiting member 16 surrounds the main body 23 in the extension direction of the first plane; and a fourth gap is included between the side wall of the main body 23 and the limiting member 11.

[0066] Specifically, the utility model also provides an optional implementation mode, in which the pen barrel 10 is provided with a limit member 16 arranged on the inner wall of the pen barrel 10, and the limit member 16 is located on the side of the holding member 11 away from the circuit board 40. Along the extension direction of the first plane, the limit member 16 is arranged around the pen tip 20. Specifically, the limit member 16 can be arranged at least around the main body 23 in the pen tip 20, so as to limit the position of the main body 23 of the pen tip 20 in the pen barrel 10 through the limit member 16, so as to avoid the situation that the pen tip 20 cannot maintain a vertical state after being subjected to force during use, and avoid the problem of poor use effect caused by the bending problem of the pen tip 20, which is conducive to improving the use effect of the pressure sensitive pen 100. However, in order to avoid excessive friction between the pen tip 20 and the pen barrel 10, which may cause the pen tip 20 to move poorly toward the side of the pressure sensor 30 when under pressure, the utility model also provides an optional setting method, namely, a fourth gap is provided between the side wall of the main body 23 and the limiter 16, so as to provide the pen tip 20 with a good movement effect relative to the side wall of the pen barrel 10 with a small amount of gap space, so as to ensure the smoothness of use of the pressure-sensitive pen 100, and also to ensure that the pressure sensor 30 can sense the corresponding stable pressure during the use of the pressure-sensitive pen 100.

[0067] Therefore, when the stopper 16 surrounds at least the main body 23 of the pen tip 20, the orthographic projection area of ​​the part of the main body 23 that can contact the clamping member 11 on the plane where the pressure sensor 30 is located can be larger than the orthographic projection area of ​​the protrusion 21 on the plane where the pressure sensor 30 is located; wherein the plane where the pressure sensor 30 is located is parallel to the first plane. Such a configuration can not only ensure the use effect of the pen tip 20, but also enable the pressure-sensitive pen 100 to have a good pressure detection effect.

[0068] Please continue to refer to Figure 2 and Figure 3 In an exemplary embodiment, a side surface of the circuit board 40 facing the pressure sensor 30 includes a first terminal 41 and a second terminal 42, and the first terminal 41 and the second terminal 42 are respectively electrically connected to the pressure sensor 30 through the hollow portion 14; wherein the first terminal 41 and the second terminal 42 are spaced apart along the extension direction of the first plane.

[0069] Specifically, the utility model also provides an optional implementation mode, in which a first terminal 41 and a second terminal 42 are provided on the circuit board 40, and the first terminal 41 and the second terminal 42 are electrically connected to the surface of the side of the pressure sensor 30 away from the pen tip 20 through the hollow portion 14 of the first clamping plate 12. The first terminal 41 and the second terminal 42 can be specifically arranged to be spaced apart in the direction from the first sub-clamping component 121 to the second sub-clamping component 122, so that the first terminal 41 and the second terminal 42 can be used as positive and negative electrodes to transmit an electrical signal related to the pressure size transmitted from the pen tip 20 detected by the pressure sensor 30.

[0070] Please continue to refer to Figure 2 and Figure 3 In an exemplary embodiment, the first sub-holder 121 and the second sub-holder 122 are connected.

[0071] Specifically, for the first sub-holder 121 and the second sub-holder 122 included in the first holding plate 12, the present invention does not specifically limit whether the two are connected in the extension direction of the first plane. The first sub-holder 121 and the second sub-holder 122 can be connected according to needs. However, it is necessary to ensure that when the pressure-sensitive pen 100 is not in use, the side surface of the pressure sensor 30 away from the pen tip 20 is in contact with the first sub-holder 121 and not in contact with the second sub-holder 122; the second sub-holder 121 and the second sub-holder 122 are connected. The clamping member 122 can be optionally configured such that, along the length direction X of the pen barrel 10, the height of the second sub-clamping member 122 is smaller than the height of the first sub-clamping member 121 at every turn, but the surfaces of the first sub-clamping member 121 and the second sub-clamping member 122 on the side away from the pen tip 20 are coplanar, so as to ensure that when the pressure sensitive pen 100 is in a non-use state, there is a gap space (activity space) between the pressure sensor 30 and the second sub-clamping member 122, so as to ensure that the pressure sensor 30 can move within the activity space when it is subjected to the pressure transmitted from the pen tip 20.

[0072] It should also be added that the first sub-clip 121 and the second sub-clip 122 are connected, and only the edge portions of the first clamping plate 12 are connected, and the hollow portion 14 is still guaranteed to exist in the middle. If the first sub-clip 121 and the second sub-clip 122 are connected, the first sub-clip 121 and the second sub-clip 122 can be manufactured by the same process, and in the case where the first clamping plate 12 and the inner wall of the pen barrel 10 are manufactured separately, the first clamping plate 12 and the inner wall of the pen barrel 10 can be fixed by a single process, without first fixing the first sub-clip 121 to the inner wall of the pen barrel 10, and then fixing the second sub-clip 122 to the inner wall of the pen barrel 10.

[0073] Please continue to refer to Figure 2 and Figure 3In an exemplary embodiment, at least an elastic filling member (not shown) is included between the pressure sensor 30 located in the second end portion 112 and the first holding plate 12 .

[0074] Specifically, the utility model also provides an optional implementation mode, in which an elastic filling piece can be optionally arranged between the pressure sensor 30 and the first holding plate 12, for example, the elastic filling piece is specifically arranged between the second sub-holding piece 122, that is, the elastic filling piece is arranged between the pressure sensor 30 located in the second end portion 112 and the first holding plate 12, so that after the pen tip 20 is used and subjected to force, the pressure sensor 30 will not be suddenly pressed to contact the surface of the first holding plate 12. The setting of the elastic filling piece can make the pressure sensor 30 move slowly toward the side of the first holding plate 12, which is beneficial to ensure the service life of the pressure sensor 30, and at the same time can also slow down the speed of the pen tip 20 moving toward the side of the circuit board 40, which is beneficial to improving the user experience of the pressure sensitive pen 100.

[0075] The elastic filler can be a spring or a rubber. Of course, the present invention is not limited thereto, and other materials with good shock absorbing effect and good deformation effect can also be selected as the elastic filler.

[0076] Please continue to refer to Figure 2 and Figure 3 In an exemplary embodiment, the orthographic projections of the tip 20 portion of the body 23 and the portion of the body 23 other than the tip 20 on the first plane are concentric circles.

[0077] Specifically, in the pen tip 20 of the pressure-sensitive pen 100 provided by the utility model, the tip 22 of the main body 23 of the pen tip 20 and the part of the main body 23 other than the tip 20 can be set to be circular in the orthographic projection on the first plane, and the two circles are specifically concentric circles. The circular tip 22 is conducive to ensuring the smoothness of the contact between the pressure-sensitive pen 100 and the device using it, which is conducive to ensuring the use effect of the pressure-sensitive pen 100 and can avoid the problem of causing damage to the device using the pressure-sensitive pen 100. In addition, setting the tip 22 of the main body 23 of the pen tip 20 and the part of the main body 23 other than the tip 20 to be concentric circles in the orthographic projection on the first plane can further ensure that the pen tip 20 remains in a vertical state as much as possible after being subjected to force during use, avoid the problem of poor use effect caused by the bending problem of the pen tip 20, and is conducive to improving the use effect of the pressure-sensitive pen 100.

[0078] However, the present invention is not limited to this. The orthographic projection of the part of the main body 23 except the tip 20 on the first plane may be set to be a square or other shapes, so as to ensure that the center of the orthographic projection of the part of the main body 23 except the tip 20 on the first plane can be reused as the center of the orthographic projection of the tip 22 of the main body 23 on the first plane, so as to ensure that the pen tip 20 can remain in a vertical state as much as possible after being subjected to force during use.

[0079] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A pressure-sensitive pen, characterized in that: It comprises a pen barrel, and a pen tip, a pressure sensor and a circuit board which are sequentially arranged inside the pen barrel along the length direction of the pen barrel; the pressure sensor is electrically connected to the circuit board; The pen holder includes a holder arranged on the side of the circuit board facing the pen tip, and the holder includes a first end and a second end; the first end and the second end are connected along the extension direction of the first plane; the extension direction of the first plane is perpendicular to the length direction of the pen holder; Along the length direction of the pen barrel, the pressure sensor is clamped in the clamping member, and the pressure sensor is limited at the first end; the second end includes a limiting hole, and the limiting hole passes through the second end along the length direction of the pen barrel; The pen tip comprises a main body and a raised portion which are connected along the length direction of the pen barrel, the raised portion is located on the side of the main body facing the pressure sensor, and the raised portion contacts the pressure sensor through the limiting hole; a first interval is provided between the main body and the holder, and a second interval is provided between a portion of the pressure sensor corresponding to the second end and the holder along the length direction of the pen barrel; The pen tip is displaced relative to the pen barrel by force, driving the pressure sensor to deform in the second end; wherein the pressure sensor generates a pressure-sensitive electrical signal based on the deformation and transmits it to the circuit board.

2. The pressure-sensitive pen according to claim 1, characterized in that: Along the length direction of the pen holder, the clamping member includes a first clamping plate and a second clamping plate which are arranged relatively spaced apart, the first clamping plate is located on the side of the second clamping plate facing the circuit board; the pressure sensor is clamped between the first clamping plate and the second clamping plate; The first holding plate includes a hollow portion penetrating the pen barrel along the length direction thereof, and the limiting hole penetrating the second holding plate along the length direction of the pen barrel; The circuit board is in electrical contact with the pressure sensor via the hollow portion.

3. The pressure-sensitive pen according to claim 2, characterized in that: Along the length direction of the pen holder, the orthographic projection area of ​​the hollow portion on the first plane is larger than the orthographic projection area of ​​the limiting hole on the first plane.

4. The pressure-sensitive pen according to claim 2, characterized in that: An elastic filling piece is included between at least the pressure sensor located in the second end portion and the first holding plate.

5. The pressure-sensitive pen according to claim 4, characterized in that: The elastic filling piece is a spring or rubber.

6. The pressure-sensitive pen according to claim 2, characterized in that: A surface of the circuit board facing the pressure sensor includes a first terminal and a second terminal, and the first terminal and the second terminal are respectively electrically connected to the pressure sensor through the hollow portion; wherein the first terminal and the second terminal are spaced apart along the extension direction of the first plane.

7. The pressure-sensitive pen according to claim 2, characterized in that: Along the extension direction of the first plane, a third gap is provided between the protruding portion and the inner side wall of the second holding plate.

8. The pressure-sensitive pen according to claim 1, characterized in that: Along the length direction of the pen holder, the orthographic projection of the protrusion on the first plane is located within the orthographic projection of the main body on the first plane.

9. The pressure-sensitive pen according to claim 8, characterized in that: The orthographic projection area of ​​the protrusion on the first plane is S1, the orthographic projection area of ​​the main body on the first plane is S2, and S1≤(S2 / 2).

10. The pressure-sensitive pen according to claim 1, characterized in that: The pen holder further comprises a limiting member located at a side of the holding member away from the circuit board, and the limiting member surrounds the main body in the extension direction of the first plane; and a fourth space is included between the main body and the side wall of the limiting member.

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