A stylus

Abstract

This invention provides a stylus, relating to the field of touch technology. In this invention, the housing is axially continuous and has a limiting portion on its inner wall. A touch head is mounted at the end of the housing and at least partially protrudes from it. A pressure sensor is located above and connected to the touch head. One end of a guide rod is connected to the touch head, and the other end is connected to the pressure sensor. A counterweight is installed inside the housing and located above the pressure sensor. One end of an elastic element abuts against the limiting portion, and the other end abuts against the counterweight. The elastic element is configured to be in a first compressed state when the touch head is not compressed. The touch head is configured to move upward under force when pressed against the touch screen, causing the pressure sensor and the counterweight to move upward, thereby switching the elastic element from the first compressed state to a second compressed state. This embodiment, through the balance of the elastic element and the counterweight, reduces the influence of friction generated by the movement of the guide rod on force measurement, improving the accuracy and sensitivity of the stylus.

Description

Technical Field

[0001] This utility model relates to the field of touch technology, and in particular to a stylus. Background Technology

[0002] In screen touch and swipe detection, precise force is typically required to be applied to the touchscreen. Existing styluses, when swiping with relatively low pressure, suffer from force feedback values ​​affected by friction, leading to large and unstable deviations in force measurement results. In other words, existing styluses suffer from low precision and insufficient sensitivity, resulting in inaccurate applied force and affecting touchscreen quality and detection results. Therefore, a stylus capable of precisely controlling the applied force is needed. Utility Model Content

[0003] One objective of this invention is to provide a stylus that solves the technical problem of inaccurate force applied to the touchscreen due to the low precision of existing styluses.

[0004] Specifically, this utility model provides a stylus, comprising:

[0005] A housing that extends axially through the interior, the inner wall of which has a limiting portion;

[0006] A touch head is mounted at the end of the housing and at least partially protrudes from the housing;

[0007] A pressure sensor is installed inside the housing, located above and connected to the touch head, and is used to detect the force applied by the touch head to the touch screen.

[0008] A guide rod is installed vertically inside the housing, with one end connected to the touch head and the other end connected to the pressure sensor;

[0009] A counterweight is installed inside the housing and located above the pressure sensor;

[0010] An elastic element has one end abutting against the limiting part and the other end abutting against the counterweight. The elastic element is configured to be in a first compressed state when the touch head is not pressed. When the elastic element is in the first compressed state, the value of the pressure sensor is zero.

[0011] The touch head is configured to move upward under force when pressed against the touch screen, causing the pressure sensor and the counterweight to move upward, thereby causing the elastic element to switch from the first compression state to the second compression state. The length of the elastic element in the second compression state is greater than the length in the first compression state.

[0012] Optionally, the housing has a first receiving cavity and a second receiving cavity arranged from bottom to top and communicating with each other, the pressure sensor is configured to move within the first receiving cavity, and the counterweight is configured to move within the second receiving cavity.

[0013] Optionally, the counterweight includes a first part and a second part connected to each other, the first part being located within the second receiving cavity, and the second part being arranged vertically and having its end connected to the pressure sensor.

[0014] Optionally, the limiting part is in the shape of a groove, the bottom of the first part is provided with a mounting groove, and the two ends of the elastic member are respectively located in the limiting part and in the mounting groove.

[0015] Optionally, the elastic element is annular and sleeved on the outside of the second part.

[0016] Optionally, the guide rod is T-shaped and has a horizontal part and a vertical part, the horizontal part being connected to the pressure sensor and the end of the vertical part being connected to the touch head.

[0017] Optionally, the housing further includes a third receiving cavity located below the first receiving cavity, and the stylus further includes:

[0018] The first guide bearing is installed in the third receiving cavity and sleeved on the vertical part.

[0019] Optionally, the top of the housing is provided with a fourth receiving cavity communicating with the second receiving cavity, and the counterweight further includes a third part, which is connected to the side of the first part away from the second part and is at least partially located in the fourth receiving cavity.

[0020] Optionally, it also includes:

[0021] The second guide bearing is installed in the fourth receiving cavity and sleeved on the third part.

[0022] Optionally, it also includes:

[0023] A mounting block, located between the guide rod and the pressure sensor, is used to mount the pressure sensor.

[0024] In this invention, the housing is axially continuous and has a limiting part on its inner wall. The touch head is installed at the end of the housing and at least partially protrudes from the housing. The pressure sensor is located above the touch head and connected to it. One end of the guide rod is connected to the touch head, and the other end is connected to the pressure sensor. A counterweight is installed inside the housing and located above the pressure sensor. One end of the elastic element abuts against the limiting part, and the other end abuts against the counterweight. The elastic element is configured to be in a first compressed state when the touch head is not compressed. When the elastic element is in the first compressed state, the value of the pressure sensor is zero. The touch head is configured to move upward under force when pressed against the touch screen, causing the pressure sensor and the counterweight to move upward, thereby switching the elastic element from the first compressed state to the second compressed state. This can be understood as the compression of the elastic element decreasing to counteract the decrease in the force of the counterweight. The force that cannot be counteracted then acts on the pressure sensor. The value measured by the pressure sensor at this time is the force applied to the touch screen by the stylus. This embodiment reduces the impact of friction generated by the movement of the guide rod on force measurement by balancing the elastic element and the counterweight, thereby improving the accuracy and sensitivity of the stylus and thus improving the precision of the force applied by the stylus to the touch screen.

[0025] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0026] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0027] Figure 1 This is a schematic structural diagram of a stylus according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic exploded view of a stylus according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic cross-sectional view of a stylus in an unpressed state according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic cross-sectional view of a stylus in a compressed state according to an embodiment of the present invention.

[0031] Figure label:

[0032] 100-Stylus pen, 10-House, 20-Touch head, 30-Pressure sensor, 40-Counterweight, 50-Elastic element, 60-Guide rod, 70-First guide bearing, 80-Second guide bearing, 90-Mounting block, 11-First mounting sleeve, 12-Second mounting sleeve, 13-Third mounting sleeve, 41-First part, 42-Second part, 43-Third part, 61-Vertical part, 62-Horizontal part, 111-First receiving cavity, 112-Second receiving cavity, 113-Third receiving cavity, 114-Fourth receiving cavity, 411-Mounting groove, 31-Signal line, 121-Limiting part. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0036] Unless otherwise expressly specified and limited, the terms "connection," "installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Unless otherwise specified, all terms (including technical and scientific terms) used in the description of this embodiment have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0038] Figure 1 This is a schematic structural diagram of a stylus 100 according to an embodiment of the present invention. Figure 2 This is a schematic exploded view of a stylus 100 according to an embodiment of the present invention. Figure 3 This is a schematic cross-sectional view of the stylus 100 in an unpressed state according to an embodiment of the present invention. Figure 4 This is a schematic cross-sectional view of a stylus 100 in a pressurized state according to an embodiment of the present invention. Figures 1 to 4 As shown, in one specific embodiment, the stylus 100 includes a housing 10, a touch head 20, a pressure sensor 30, a guide rod 60, a counterweight 40, and an elastic element 50. The housing 10 is axially continuous, and its inner wall has a limiting portion 121. The touch head 20 is mounted at one end of the housing 10 and at least partially protrudes from it. The pressure sensor 30 is mounted inside the housing 10, located above and connected to the touch head 20, and is used to detect the force applied by the touch head 20 to the touch screen. The guide rod 60 is vertically mounted inside the housing 10, with one end connected to the touch head 20 and the other end connected to the pressure sensor 30. The counterweight 40 is mounted inside the housing 10 and located above the pressure sensor 30. One end of the elastic element 50 abuts against the limiting part 121, and the other end abuts against the counterweight 40. The elastic element 50 is configured to be in a first compressed state when the touch head 20 is not compressed. When the elastic element 50 is in the first compressed state, the value of the pressure sensor 30 is zero. The touch head 20 is configured to move upward under force when pressed against the touch screen, causing the pressure sensor 30 and the counterweight 40 to move upward, thereby switching the elastic element 50 from the first compressed state to a second compressed state. The length of the elastic element 50 in the second compressed state is greater than its length in the first compressed state. Here, the touch head 20 is used to directly contact the touch screen and slide on the touch screen. The guide rod 60 is used to position and guide the touch head 20. The elastic element 50 is used to provide a rebound force and, together with the counterweight 40, achieves force balance.

[0039] In this embodiment, when the counterweight 40 moves upward, the compression of the elastic element 50 decreases, which counteracts the decrease in the force of the counterweight 40. The force that cannot be counteracted then acts on the pressure sensor 30. The value measured by the pressure sensor 30 at this time is the force applied by the stylus 100 to the touchscreen. This embodiment reduces the influence of the friction force generated by the movement of the guide rod 60 on the force measurement through the balance between the elastic element 50 and the counterweight 40, and also reduces the influence of the self-weight of the stylus 100, improving the accuracy and sensitivity of the stylus 100, thereby improving the accuracy of the force applied by the stylus 100 to the touchscreen. In addition, the stylus 100 in this embodiment has a simple structure and is easy to manufacture and maintain.

[0040] See Figure 3 When the stylus 100 is in an unpressed state, the elastic element 50 is in a first compressed state. See also Figure 4 When the stylus 100 is under pressure, the elastic element 50 is in a second compression state. Here, when the stylus 100 is not under pressure, the counterweight 40 has a preset weight, which is borne jointly by the pressure sensor 30 and the elastic element 50. At this time, the value of the pressure sensor 30 is adjusted to zero. When the stylus 100 is under pressure, the preset weight of the counterweight 40 remains unchanged, and the counterweight 40 moves upward. The compression of the elastic element 50 decreases, and the force it bears decreases, switching from the first compression state to the second compression state. The force that cannot be offset then acts on the pressure sensor 30, increasing the force on the pressure sensor 30, which changes from zero to a preset value. This preset value is the force applied by the stylus 100 to the touchscreen.

[0041] In this embodiment, the force applied to the touch head 20 of the stylus 100 can be adjusted between 0-300g to suit different application needs. Here, the greater the applied force, the more the counterweight 40 moves upward, and the greater the value fed back by the pressure sensor 30.

[0042] In some embodiments, the elastic element 50 is a spring. In other embodiments, the elastic element 50 may also be a component having the same properties as a spring.

[0043] In some embodiments, the pressure sensor 30 has a signal line 31, which is connected to a display instrument or a data acquisition system.

[0044] In some embodiments, the housing 10 has a first receiving cavity 111 and a second receiving cavity 112 arranged from bottom to top and communicating with each other. The pressure sensor 30 is configured to move within the first receiving cavity 111, and the counterweight 40 is configured to move within the second receiving cavity 112. Here, the height of the first receiving cavity 111 can limit the travel of the pressure sensor 30, and the height of the counterweight 40 can limit the travel of the counterweight 40.

[0045] In some embodiments, the counterweight 40 includes a first portion 41 and a second portion 42 connected to each other. The first portion 41 is located within a second receiving cavity 112, and the second portion 42 is arranged vertically and its end is connected to the pressure sensor 30. Here, the second receiving cavity 112 is cylindrical, both the first portion 41 and the second portion 42 are cylindrical, and the diameter of the second portion 42 is smaller than the diameter of the first portion 41. When the counterweight 40 moves up and down, the upper end of the second portion 42 moves up and down within the second receiving cavity 112, and the lower end of the second portion 42 moves up and down within the first receiving cavity 111.

[0046] In some embodiments, the limiting portion 121 is groove-shaped, and the bottom of the first portion 41 is provided with a mounting groove 411. The two ends of the elastic member 50 are respectively located in the limiting portion 121 and the mounting groove 411. This embodiment can limit the elastic member 50 through the cooperation of the limiting portion 121 and the mounting groove 411.

[0047] In some embodiments, the elastic element 50 is annular and sleeved on the outside of the second portion 42. This embodiment, by configuring the elastic element 50 as an annular shape, achieves uniform force distribution.

[0048] In some embodiments, the guide rod 60 is T-shaped and has a horizontal portion 62 and a vertical portion 61. The horizontal portion 62 is connected to the pressure sensor 30, and the end of the vertical portion 61 is connected to the touch head 20.

[0049] In some embodiments, the housing 10 further includes a third receiving cavity 113 located below the first receiving cavity 111. The stylus 100 also includes a first guide bearing 70, which is mounted within the third receiving cavity 113 and sleeved on the vertical portion 61. This embodiment uses the first guide bearing 70 to guide and position the guide rod 60, resulting in less friction and more precise positioning of the touch head 20 during tapping or sliding. In other words, the first guide bearing 70 reduces the friction generated when the guide rod 60 moves.

[0050] In some embodiments, the top of the housing 10 is provided with a fourth receiving cavity 114 communicating with the second receiving cavity 112, and the counterweight 40 further includes a third part 43, which is connected to the side of the first part 41 away from the second part 42 and is at least partially located in the fourth receiving cavity 114.

[0051] In some embodiments, the stylus 100 further includes a second guide bearing 80, which is installed within the fourth receiving cavity 114 and sleeved on the third portion 43. This embodiment uses the second guide bearing 80 to guide and position the counterweight 40, and to reduce the frictional force generated when the counterweight 40 moves.

[0052] In some embodiments, the stylus 100 further includes a mounting block 90 located between the guide rod 60 and the pressure sensor 30 for mounting the pressure sensor 30. It can be understood that the mounting block 90 is also located within the housing 10. In some embodiments, the housing 10 includes a first mounting sleeve 11, a second mounting sleeve 12, and a third mounting sleeve 13 arranged sequentially from bottom to top. The first mounting sleeve 11 is connected to the second mounting sleeve 12, and the second mounting sleeve 12 is connected to the third mounting sleeve 13. The first mounting sleeve 11 has a third receiving cavity 113, the second mounting sleeve 12 has a first receiving cavity 111 and a limiting portion 121 at its top, and the third mounting sleeve 13 has a second receiving cavity 112 and a fourth receiving cavity 114.

[0053] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A stylus, characterized by include: A housing that extends axially through the interior, the inner wall of which has a limiting portion; A touch head is mounted at the end of the housing and at least partially protrudes from the housing; A pressure sensor is installed inside the housing, located above and connected to the touch head, and is used to detect the force applied by the touch head to the touch screen. A guide rod is installed vertically inside the housing, with one end connected to the touch head and the other end connected to the pressure sensor; A counterweight is installed inside the housing and located above the pressure sensor; An elastic element has one end abutting against the limiting part and the other end abutting against the counterweight. The elastic element is configured to be in a first compressed state when the touch head is not pressed. When the elastic element is in the first compressed state, the value of the pressure sensor is zero. The touch head is configured to move upward under force when pressed against the touch screen, causing the pressure sensor and the counterweight to move upward, thereby causing the elastic element to switch from the first compression state to the second compression state. The length of the elastic element in the second compression state is greater than the length in the first compression state.

2. The stylus according to claim 1, characterized in that, The housing has a first receiving cavity and a second receiving cavity arranged from bottom to top and connected to each other. The pressure sensor is configured to move within the first receiving cavity, and the counterweight is configured to move within the second receiving cavity.

3. The stylus according to claim 2, characterized in that, The counterweight includes a first part and a second part that are connected to each other. The first part is located in the second receiving cavity, and the second part is arranged vertically and its end is connected to the pressure sensor.

4. The stylus according to claim 3, characterized in that, The limiting part is in the shape of a groove, and the bottom of the first part is provided with a mounting groove. The two ends of the elastic member are located in the limiting part and the mounting groove, respectively.

5. The stylus according to claim 4, characterized in that, The elastic element is ring-shaped and is sleeved on the outside of the second part.

6. The stylus according to any one of claims 2-5, characterized in that, The guide rod is T-shaped and has a horizontal part and a vertical part. The horizontal part is connected to the pressure sensor, and the end of the vertical part is connected to the touch head.

7. The stylus of claim 6, wherein, The housing also has a third receiving cavity located below the first receiving cavity, and the stylus further includes: The first guide bearing is installed in the third receiving cavity and sleeved on the vertical part.

8. The stylus according to any one of claims 3-5, characterized in that, The top of the housing is provided with a fourth receiving cavity that communicates with the second receiving cavity. The counterweight also includes a third part, which is connected to the side of the first part away from the second part and is at least partially located in the fourth receiving cavity.

9. The stylus of claim 8, wherein, Also includes: The second guide bearing is installed in the fourth receiving cavity and sleeved on the third part.

10. The stylus of any one of claims 1-5, wherein, Also includes: A mounting block is located between the guide rod and the pressure sensor for mounting the pressure sensor.

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