Touch pen
By employing a combination of annular and axial positioning parts in the stylus, the problems of pen tip loosening and low assembly efficiency are solved, achieving stable pen tip positioning and improving the stylus's accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-21
AI Technical Summary
Existing styluses suffer from problems such as looseness, wobbling, detachment, and low assembly efficiency in the connection between the pen tip and the pen barrel, making it difficult to meet the needs of high-precision operation.
The pen tip is positioned by a first annular positioning part on the outer wall of the pen tip and a second annular positioning part on the inner wall of the pen holder. The first axial positioning part of the pen tip and the second axial positioning part of the pen holder are combined to form a cross-shaped constraint structure, which ensures the stability and accuracy of the pen tip inside the pen holder.
It achieves full freedom of movement of the pen tip within the pen holder, preventing loosening and detachment, improving the accuracy and smoothness of writing and drawing, meeting users' needs for high-precision operation, and extending the product's lifespan.
Smart Images
Figure CN224152951U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of input device technology and relates to a stylus. Background Technology
[0002] With the widespread use of smart terminal devices such as tablets, smartphones, and digital drawing tablets, styluses, as important input tools, are receiving increasing attention for their performance and user experience. In the design and manufacturing process of styluses, the stability of the connection between the pen tip and the pen barrel is one of the key factors affecting the overall product quality and user experience.
[0003] Currently, most existing styluses use simple plug-in or threaded connections between the pen tip and the pen holder. While plug-in connections are convenient, the lack of an effective positioning structure during use makes the pen tip prone to loosening, wobbling, or even detachment, severely affecting the accuracy and smoothness of writing and drawing. Threaded connections, while improving stability to some extent, suffer from low assembly efficiency, are prone to thread misalignment during assembly, and their complex structure increases production costs and manufacturing complexity. Furthermore, neither of these traditional connection methods can achieve precise positioning of the pen tip within the pen holder, failing to meet users' demands for high-precision stylus operation.
[0004] Therefore, there is an urgent need in this field for a stylus to solve the above-mentioned technical problems. Utility Model Content
[0005] In view of this, the purpose of this utility model is to solve the above problems and provide a stylus, comprising:
[0006] The pen tip has a first annular positioning part and a first axial positioning part on its outer wall;
[0007] A pen holder, wherein the end of the pen holder is provided with a mounting cylinder, and the inner wall of the mounting cylinder is provided with a second annular positioning part and a second axial positioning part, wherein the first annular positioning part and the second annular positioning part cooperate, and the first axial positioning part and the second axial positioning part cooperate, so that the pen tip is positioned inside the mounting cylinder.
[0008] As a further improvement of this utility model, the first axial positioning part includes a plurality of waist-shaped grooves spaced apart, and the second axial positioning part includes a plurality of waist-shaped protrusions spaced apart, with the plurality of waist-shaped grooves and the plurality of waist-shaped protrusions corresponding to each other.
[0009] As a further improvement of this utility model, the waist-shaped groove includes a first groove bottom surface and a first groove wall surface connected to the first groove bottom surface, and the included angle between the first groove bottom surface and the first groove wall surface is a right angle.
[0010] As a further improvement of this utility model, the number of waist-shaped grooves is 3, and the number of waist-shaped protrusions is equal to the number of waist-shaped grooves.
[0011] As a further improvement of this utility model, the first annular positioning part includes an annular groove, and the second annular positioning part includes an annular protrusion.
[0012] As a further improvement of this utility model, the annular groove includes a second groove bottom surface and a second groove wall surface connected to the second groove bottom surface, and the included angle between the second groove bottom surface and the second groove wall surface is an obtuse angle.
[0013] As a further improvement of this utility model, the waist-shaped groove and the annular groove have an intersection point.
[0014] As a further improvement of this utility model, the depth of the waist-shaped groove is greater than the depth of the annular groove.
[0015] As a further improvement of this utility model, the end of the pen tip is provided with a connecting part, which extends out of the mounting cylinder.
[0016] As a further improvement of this utility model, the pen tip has a shaft hole that passes through the central axis of the pen tip.
[0017] The technical advantages of this invention are as follows: Compared with the prior art, the stylus provided by this invention, by setting a first annular positioning part on the outer wall of the pen tip to cooperate with a second annular positioning part on the inner wall of the pen holder's mounting cylinder, restricts the radial displacement of the pen tip within the mounting cylinder, ensuring the concentricity of the pen tip and the pen holder. By setting a first axial positioning part on the pen tip to cooperate with a second axial positioning part on the inner wall of the pen holder's mounting cylinder, constraint is provided along the pen tip's axial direction, preventing axial slippage or detachment of the pen tip during use, and also avoiding rotation of the pen tip within the mounting cylinder under external force. The combination of the annular positioning part and the axial positioning part forms a cross constraint, achieving full degree of freedom restriction. The annular positioning part counteracts rotation and radial offset, while the axial positioning part counteracts longitudinal displacement and pen tip rotation, ensuring high-precision positioning. Constraining the pen tip in both circumferential and axial dimensions ensures that the pen tip is positioned inside the mounting cylinder, guaranteeing the accuracy and stability of the pen tip's position within the pen holder. Compared to the problems of traditional plug-in connections being prone to loosening and falling off, and threaded connections being prone to misalignment, the stylus provided by this utility model has precise circumferential and axial positioning, ensuring the accuracy of the pen tip's position during use, meeting users' needs for high-precision operation, and improving the user experience. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model, not all embodiments. For those skilled in the art, other drawings obtained from these drawings without creative effort are all within the protection scope of this utility model.
[0019] Figure 1 This is a perspective view of a stylus provided in an embodiment of the present utility model;
[0020] Figure 2 This is a schematic diagram of the pen tip structure provided in an embodiment of the present invention;
[0021] Figure 3 This is a schematic diagram of the structure of the pen holder provided in this embodiment of the utility model.
[0022] Figure 4 This is a front view of a stylus provided in an embodiment of the present invention;
[0023] Figure 5 yes Figure 4 Cross-sectional view at BB.
[0024] Wherein, 10 is the pen tip, 11 is the first annular positioning part, 111 is the annular groove, 1111 is the bottom surface of the second groove, 1112 is the wall surface of the second groove, 12 is the first axial positioning part, 121 is the waist-shaped groove, 1211 is the bottom surface of the first groove, 1212 is the wall surface of the first groove, 13 is the connecting part, and 14 is the shaft hole.
[0025] 20 is a pen holder, 21 is a mounting cylinder, 211 is a second annular positioning part, 2111 is an annular protrusion, 212 is a second axial positioning part, and 2121 is a waist-shaped protrusion. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.
[0027] To make the description of this disclosure more detailed and complete, illustrative descriptions of the embodiments and specific examples of this utility model are provided below; however, this is not the only form of implementing or using the specific embodiments of this utility model. The embodiments cover the features of multiple specific embodiments and the methods, steps, and sequences for constructing and operating these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and sequence of steps. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0029] It should be understood that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in sequences other than those illustrated or described herein.
[0030] In the description of this utility model, the terms "front", "rear", "top", "inner", "outer", etc., 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.
[0031] Please refer to Figures 1-5 One embodiment of this utility model provides a stylus to solve the problems of existing styluses, such as easy loosening and detachment of plug-in connections and easy misalignment of threaded connections.
[0032] Specifically, please refer to Figure 1 This is a perspective view of a stylus provided in an embodiment of the present invention. The stylus includes a pen tip 10 and a pen holder 20. Please refer to the following: Figure 2 The outer wall of the pen tip 10 is provided with a first annular positioning part 11 and a first axial positioning part 12; please refer to Figure 3The pen holder 20 has a mounting cylinder 21 at its end. The inner wall of the mounting cylinder 21 has a second annular positioning part 211 and a second axial positioning part 212. The first annular positioning part 11 on the outer wall of the pen tip 10 cooperates with the second annular positioning part 211 on the inner wall of the mounting cylinder 21 of the pen holder 20. Through the fit of the annular structure, the radial displacement of the pen tip 10 in the mounting cylinder 21 is restricted, such as rotation or lateral shaking, to ensure the concentricity of the pen tip 10 and the pen holder 20. The first axial positioning part 12 of the pen tip 10 cooperates with the second axial positioning part 212 on the inner wall of the mounting cylinder 21 of the pen holder 20 to provide constraint along the axial direction of the pen tip 10, preventing the pen tip 10 from axially slipping or falling off during use, and also avoiding the rotation of the pen tip 10 in the mounting cylinder 21 under the action of external force. The combination of the annular positioning part and the axial positioning part forms a cross constraint, realizing full degree of freedom restriction. The annular positioning part cancels rotation and radial offset, and the axial positioning part cancels longitudinal displacement and pen tip 10 rotation, ensuring high-precision positioning. The pen tip 10 is constrained from both circumferential and axial dimensions to ensure that the pen tip 10 is positioned inside the mounting cylinder 21, ensuring the accuracy and stability of the pen tip 10's position in the pen holder 20.
[0033] Compared to traditional plug-in connections that are prone to loosening and detachment, and threaded connections that are prone to misalignment, the stylus provided by this utility model features a dual positioning structure that reliably secures the pen tip 10. Even under external impact or frequent operation, the pen tip 10 will not easily loosen or detach, greatly improving the overall stability of the stylus and extending its lifespan. Precise circumferential and axial positioning ensures the accurate placement of the pen tip 10 during use. This allows the pen tip 10 to accurately respond to operation commands during writing and drawing, improving the precision and smoothness of writing and drawing, meeting users' needs for high-precision operation, and enhancing the user experience.
[0034] As a further improvement of this utility model, the first axial positioning part 12 includes a plurality of spaced-apart waist-shaped grooves 121, and the second axial positioning part 212 includes a plurality of spaced-apart waist-shaped protrusions 2121. The plurality of waist-shaped grooves 121 and the plurality of waist-shaped protrusions 2121 are correspondingly arranged. The spaced-apart arrangement of the plurality of waist-shaped grooves 121 and the plurality of protrusions forms a circumferentially distributed constraint force, which can disperse the stress generated during assembly and use to a certain extent, avoid local stress concentration, and avoid skew caused by unilateral force. Even if a certain waist-shaped groove 121 or waist-shaped protrusion 2121 fails due to wear or tolerance, the remaining waist-shaped grooves 121 and waist-shaped protrusions 2121 can still maintain the overall positioning function, thereby improving the positioning reliability of the stylus. The specific arrangement of the plurality of waist-shaped grooves 121 and the plurality of waist-shaped protrusions 2121 can be a symmetrical arrangement of 3 groups at 120° or a symmetrical arrangement of 4 groups at 90°.
[0035] As a further improvement of this utility model, the waist-shaped groove 121 includes a first groove bottom surface 1211 and a first groove wall surface 1212 connected to the first groove bottom surface 1211, wherein the angle between the first groove bottom surface 1211 and the first groove wall surface 1212 is a right angle. By setting the first groove bottom surface 1211 and the first groove wall surface 1212 of the waist-shaped groove 121 to be at a right angle, the clear and regular limiting boundary of the right angle structure ensures that the waist-shaped protrusion 2121 and the waist-shaped groove 121 are strongly blocked by the right angle surface formed by the first groove wall surface 1212 and the first groove bottom surface 1211 in directions perpendicular to the axial and circumferential directions. This ensures that the waist-shaped protrusion 2121 and the waist-shaped groove 121 cannot shift in any direction, thereby achieving precise and stable axial positioning. At the same time, the positioning cooperation between the first annular positioning part 11 and the second annular positioning part 211 in the circumferential direction ensures that the pen tip 10 is firmly fixed inside the first mounting cylinder 21. No matter the pressing, friction or other external forces during use, it is difficult to change the position of the pen tip 10.
[0036] The right-angle structure between the bottom surface 1211 and the wall surface 1212 of the first groove can evenly distribute the stress generated during assembly and use, avoiding stress concentration at a certain point or in a certain area. When the stylus is subjected to external force, the right-angle surface formed by the bottom surface 1211 and the wall surface 1212 of the waist-shaped groove 121 can evenly transmit the force to the entire connection structure, reducing the risk of local deformation and damage, effectively enhancing the structural strength of the connection part 13 between the pen tip 10 and the pen holder 20, and extending the service life of the stylus. Compared with a non-right-angle structure, it can more effectively restrict the movement of the waist-shaped protrusion 2121, greatly reducing the wobbling of the pen tip 10 in the axial and other directions, ensuring that the pen tip 10 always maintains a precise position during use, improving the accuracy of writing and drawing, and bringing a smoother user experience. At the same time, the right-angle shape is easier to achieve during processing. Compared with complex curved surfaces or bevels, the waist-shaped groove 121 can be processed using conventional processing techniques and tools, reducing processing difficulty and cost.
[0037] As a further improvement of this utility model, the number of waist-shaped grooves 121 is three, and the number of waist-shaped protrusions 2121 is equal to the number of waist-shaped grooves 121. The three waist-shaped grooves 121 and the three waist-shaped protrusions 2121 are symmetrically distributed at 120° around the pen tip 10 to form a uniform triangular support structure, eliminating the risk of skewing caused by unilateral force. The three positioning points can completely restrict the axial displacement and circumferential rotation of the pen tip 10, effectively preventing the pen tip 10 from becoming loose or shifting within the pen holder 20, and also avoid over-constraints that may occur due to tolerances at four or more points, such as jamming or assembly difficulties.
[0038] As a further improvement of this utility model, the first annular positioning part 11 includes an annular groove 111, and the second annular positioning part 211 includes an annular protrusion 2111. The annular groove 111 of the first annular positioning part 11 and the annular protrusion 2111 of the second annular positioning part 211 form a circumferential positioning structure, eliminating the radial wobbling of the pen tip 10 in the pen holder 20. Together with the axial positioning of the waist-shaped groove 121 and the waist-shaped protrusion 2121, they jointly achieve a stable installation of the pen tip 10. The annular protrusion 2111 on the inner wall of the first mounting cylinder 21 of the pen holder 20 is embedded in the annular groove 111 on the outer wall of the pen tip 10. The circumferential arrangement of the annular groove 111 and the annular protrusion 2111 forms a 360° constraint, eliminating the blind spot wobbling of traditional multi-point snap-fit devices. The positioning force between the annular groove 111 and the annular protrusion 2111 is evenly distributed across the entire circumference. Regardless of the angle at which the user holds and uses the stylus while writing or drawing, the annular positioning structure can always maintain a stable constraint on the pen tip 10. This achieves all-round restriction of the movement of the pen tip 10. The embedding of the annular protrusion 2111 into the annular groove 111 also increases the contact area between the pen tip 10 and the pen holder 20, dispersing the external force generated during use and reducing the possibility of excessive local force.
[0039] As a further improvement of this utility model, the annular groove 111 includes a second groove bottom surface 1111 and a second groove wall surface 1112 connected to the second groove bottom surface 1111. The included angle between the second groove bottom surface 1111 and the second groove wall surface 1112 is an obtuse angle. The obtuse angle slope between the second groove bottom surface 1111 and the second groove wall surface 1112 forms a funnel-shaped progressive guide surface. When the annular protrusion 2111 is embedded in the annular groove 111, the slope guides the annular guide protrusion to automatically slide into the bottom of the annular groove 111, reducing assembly resistance. The obtuse angle transition between the second groove bottom surface 1111 and the second groove wall surface 1112 replaces the traditional right angle or acute angle, eliminating stress concentration at the connection between the second groove bottom surface 1111 and the second groove wall surface 1112 of the annular groove 111. This disperses the contact pressure between the annular protrusion 2111 and the annular groove 111 along the normal direction of the slope, significantly reducing the risk of fatigue cracking at the connection between the second groove bottom surface 1111 and the second groove wall surface 1112. This makes the connection of the pen tip 10 more stable in the circumferential direction, effectively improving the impact resistance of the overall structure of the stylus, reducing the risk of the pen tip 10 becoming loose or rotating due to external force, and extending the product's service life.
[0040] As a further improvement of this utility model, the waist-shaped groove and the annular groove 111 intersect at a point. The waist-shaped groove and the annular groove 111 form a spatial intersection node at the intersection, creating a three-dimensional constraint, so that the two positioning structures are no longer independent but form an organic whole. In the axial direction, the waist-shaped protrusion 2121 cooperates with the waist-shaped groove to achieve axial positioning of the pen tip 10; in the circumferential direction, the annular protrusion 2111 cooperates with the annular groove 111 to achieve circumferential positioning. At the intersection, when the pen tip 10 is subjected to external force, the force can be dispersed to the axial and radial structures, and transmitted between the axial positioning structure and the circumferential positioning structure, avoiding overload of a single groove. For example, when the pen tip 10 is subjected to an oblique external force, this force can be partially resisted axially by the waist-shaped groove and waist-shaped protrusion 2121 at the intersection, and partially dispersed circumferentially by the annular groove 111 and annular protrusion 2111, thereby achieving a more stable positioning of the pen tip 10 and further enhancing the stability of the overall structure. Compared to structures without intersections, this structure can more effectively limit the displacement of the pen tip 10 in all directions when subjected to complex external forces, greatly improving the positioning accuracy and stability of the pen tip 10, ensuring that the pen tip 10 always maintains an accurate position when the user is writing, drawing, or performing other operations, thus optimizing the user experience.
[0041] As a further improvement of this utility model, the depth of the waist-shaped groove is greater than the depth of the annular groove 111. The deeper waist-shaped groove design allows for a larger and tighter contact area between the waist-shaped protrusion 2121 and the groove wall after embedding, which can more effectively restrict the axial movement of the pen tip 10 and form a stronger constraint effect in the axial direction, resulting in a more significant restriction on the axial movement of the pen tip 10. The relatively shallow design of the annular groove 111, to a certain extent, helps to enhance the stability of the overall connection. When the pen tip 10 is subjected to external force, the deeper waist-shaped groove can better resist the axial force, distributing most of the axial force to the connection part 13 between the pen tip 10 and the pen holder 20, while the shallower annular groove 111 focuses on restricting circumferential rotation. Whether it is the frequent pressing during daily writing or the application of greater pressure during drawing, the pen tip 10 can maintain a fixed axial position, avoiding axial loosening, sinking, etc., significantly improving the stability and reliability of the stylus during use. At the same time, when subjected to complex external forces, the two work together to evenly distribute the force to the entire connection part 13, reducing the risk of local stress concentration.
[0042] As a further improvement to this utility model, please refer to Figure 4The pen tip 10 has a connecting portion 13 at its end, which extends out of the mounting cylinder 21. The connecting portion 13, as an axial extension of the pen tip 10, breaks through the end face limitation of the mounting cylinder 21 and is directly exposed to the outside of the pen cylinder 20, forming a physical interface for quick insertion of third-party pen tips, sensors, and other modules. In some embodiments, the outer wall of the connecting portion 13 is provided with a reinforcing structure, such as protrusions or a special texture, to improve the mechanical strength and durability of the connecting portion 13.
[0043] As a further improvement to this utility model, please refer to Figure 5 The pen tip 10 has a shaft hole 14 extending through its central axis. The shaft hole 14 can accommodate internal components, such as sensor cables or other electronic components. This facilitates the access of internal components to the connection portion 13 via the pen tip 10, ensuring stable signal transmission. Simultaneously, the shaft hole 14, instead of a traditional solid pen tip 10, reduces the weight of the pen tip 10, improves balance, and enhances the user experience during extended use.
[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.
[0045] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A stylus, characterized by include: The pen tip has a first annular positioning part and a first axial positioning part on its outer wall; A pen holder, wherein the end of the pen holder is provided with a mounting cylinder, and the inner wall of the mounting cylinder is provided with a second annular positioning part and a second axial positioning part, wherein the first annular positioning part and the second annular positioning part cooperate, and the first axial positioning part and the second axial positioning part cooperate, so that the pen tip is positioned inside the mounting cylinder.
2. The stylus of claim 1, wherein: The first axial positioning part includes a plurality of waist-shaped grooves spaced apart, and the second axial positioning part includes a plurality of waist-shaped protrusions spaced apart, with the plurality of waist-shaped grooves corresponding to the plurality of waist-shaped protrusions.
3. The stylus of claim 2, wherein: The waist-shaped groove includes a first groove bottom surface and a first groove wall surface connected to the first groove bottom surface, and the included angle between the first groove bottom surface and the first groove wall surface is a right angle.
4. The stylus of claim 2, wherein: The number of waist-shaped grooves is 3, and the number of waist-shaped protrusions is equal to the number of waist-shaped grooves.
5. The stylus of claim 2, wherein: The first annular positioning part includes an annular groove, and the second annular positioning part includes an annular protrusion.
6. The stylus of claim 5, wherein: The annular groove includes a second groove bottom surface and a second groove wall surface connected to the second groove bottom surface, and the included angle between the second groove bottom surface and the second groove wall surface is an obtuse angle.
7. The stylus of claim 5, wherein: The waist-shaped groove and the annular groove intersect at a point.
8. The stylus according to claim 5, characterized in that: The depth of the waist-shaped groove is greater than the depth of the annular groove.
9. The stylus of claim 8, wherein: The pen tip has a connecting part at its end, which extends out of the mounting cylinder.
10. The stylus of claim 1, wherein: The pen tip has a shaft hole that passes through the central axis of the pen tip.