Pen cap
By designing smooth transitions in the sidewalls and protrusions on the pen cap, the problems of eraser usage time and assembly difficulties are solved, resulting in extended eraser usage time and improved assembly efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-03-03
AI Technical Summary
The existing pen cap design results in shorter eraser lifespan and makes assembly difficult, affecting user experience and assembly pass rate.
Design a pen cap with a smoothly transitioned sidewall connecting two ports of different sizes, and a protrusion on the sidewall to support it, so that the center line of the pen cap is parallel to the plane, ensuring that the assembly paths of the pencil and eraser do not intersect.
It increases the lifespan of erasers, simplifies the manufacturing process, and improves the smoothness and pass rate of pencil and eraser assembly.
Smart Images
Figure CN223961933U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of writing instrument technology, and in particular to a pen cap. Background Technology
[0002] To improve user convenience, designers can incorporate an eraser at the end of the pencil. The eraser and pencil are typically connected by a cap, with one end of the cap attached to the pencil and the other to the eraser. However, because the cross-sectional area of a pencil is relatively small, the eraser at the other end of the cap is also relatively small. This significantly reduces the eraser's lifespan, negatively impacting the user experience.
[0003] To achieve a larger eraser and extend its lifespan, the pen cap can be designed with different opening sizes at both ends. However, an irregularly shaped pen cap is difficult to manufacture. Furthermore, when assembling the pen cap with the pencil and eraser, the different opening sizes at both ends cause the centerline of the pen cap to form an angle with the plane when placed on a surface. This results in the assembly path intersecting the centerline of the pen cap when the pencil and eraser are attached to the cap along the plane, making assembly difficult and reducing the assembly success rate. Utility Model Content
[0004] The main objective of this application is to provide a pen cap with a regular shape, simple processing, and the ability to avoid difficulties in assembling pencils and erasers, thereby improving the assembly qualification rate.
[0005] To achieve the above objectives, this application adopts the following technical solution:
[0006] According to one aspect of this application, a pen cap is provided, including a body and a protrusion. The body is cylindrical and includes a first port, a second port, and a sidewall. The sidewall connects the first port and the second port and is a smooth transition surface from the first port to the second port. The cross-sectional area of the first port is smaller than that of the second port. The first port has a first center point, and the second port has a second center point. The line connecting the first center point and the second center point is defined as the centerline of the pen cap. The protrusion is disposed on the sidewall and serves to support the sidewall, such that when the pen cap is placed on a plane, the centerline of the pen cap is parallel to the plane.
[0007] According to one embodiment of this application, the protrusion includes a plurality of protruding strips, which are spaced apart on the sidewall. Each of the protruding strips extends from the first port to the second port. The distance between the side of the protruding strip away from the sidewall and the sidewall is defined as the thickness of the protruding strip. The thickness of the protruding strip gradually decreases from the first port to the second port.
[0008] According to one embodiment of this application, each of the protruding strips has a first distance from the first port, the first distance being the same, and / or; each of the protruding strips has a second distance from the second port, the second distance being the same.
[0009] According to one embodiment of this application, the distances between adjacent protruding strips are not equal.
[0010] According to one embodiment of this application, the protrusion includes a plurality of protruding blocks, which are spaced apart on the sidewall. The distance between the side of the protruding block away from the sidewall and the sidewall is defined as the thickness of the protruding block. Then, the thickness of the protruding block near the first port is greater than the thickness of the protruding block near the second port.
[0011] According to one embodiment of this application, the protrusion has a third distance from the first port, and the protrusions having the same third distance have the same thickness.
[0012] According to one embodiment of this application, the line connecting the side of the protrusion away from the sidewall and the second port is defined as the pen cap placement line; when the pen cap is placed on the plane, the pen cap placement line is located in the plane.
[0013] According to one embodiment of this application, the first port is circular, the second port is an arcuate triangle, the second port has an external circle, and the second center point is the center of the external circle.
[0014] According to one embodiment of this application, the diameter of the circumscribed circle of the second port is larger than the diameter of the first port.
[0015] According to one embodiment of this application, the first port is used for pen insertion, and the second port is used for setting an eraser.
[0016] As can be seen from the above technical solution, the advantages and positive effects of the pen cap proposed in this application are as follows:
[0017] The pen cap proposed in this application connects two ports of different sizes through a smoothly transitioning sidewall, which allows the second port for installing the eraser to be larger, thereby increasing the eraser's lifespan. Furthermore, the overall shape of the pen cap is regular and smooth, making it easy to manufacture.
[0018] The pen cap proposed in this application has a protrusion on the side wall that supports the side wall, so that when the pen cap is placed on a plane, the center line of the pen cap is parallel to the plane. This ensures that when the pencil and eraser are assembled onto the pen cap along the plane, the assembly path is parallel to the center line of the pen cap and does not intersect, making the assembly of the pencil and eraser with the pen cap smooth and improving the assembly qualification rate. Attached Figure Description
[0019] The various objectives, features, and advantages of this application will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of this application and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:
[0020] Figure 1 This is a schematic diagram of the pen cap of this application.
[0021] Figure 2 yes Figure 1 The main view.
[0022] Figure 3 yes Figure 2 The left view.
[0023] Figure 4 yes Figure 3 A bottom view.
[0024] Figure 5 This is a schematic diagram of the second embodiment of the pen cap of this application.
[0025] The annotations in the attached figures are explained as follows:
[0026] 1-Pen cap;
[0027] 10-Ontology;
[0028] 20 - Protrusion;
[0029] 101 - First Port;
[0030] 102 - Second Port;
[0031] 103-Sidewall;
[0032] 104 - First center point;
[0033] 105 - Second center point;
[0034] 106 - Center line of the pen cap;
[0035] 107 - Circumscribed circle;
[0036] 201-Prominent strip;
[0037] 202 - Protruding Block;
[0038] 203 - Pen cap placement line. Detailed Implementation
[0039] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.
[0040] In the following description of various exemplary embodiments of the present invention, reference is made to the accompanying drawings, which form part of the present invention, and which illustrate by way of example different exemplary structures, systems, and steps that can implement various aspects of the present invention. It should be understood that other specific solutions to components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of the present invention. Furthermore, although the terms “above,” “between,” “within,” etc., may be used in this specification to describe different exemplary features and elements of the present invention, these terms are used herein only for convenience, such as the orientation according to the examples shown in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of the present invention.
[0041] It is understood that the terms "comprising" and "having," and any variations thereof, in the embodiments of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to such processes, methods, products, or devices.
[0042] Relative terms such as “down” or “bottom” and “up” or “top” may be used herein to describe the relationship of one element to another, as illustrated in the figures. It should be understood that relative terms are intended to include different orientations of the device beyond those shown in the figures. For example, if a device in one of the figures is flipped, an element described as “down” or “bottom” of another element will be oriented “up” or “top” of that element. Thus, the exemplary term “down” can include both “down” and “up” orientations, and the term “bottom” can include both “bottom” and “top” orientations, depending on the specific orientation of the figure. Similarly, if a device in one of the figures is flipped, an element described as “down” or “bottom” of another element will be oriented “up” or “top” of that element. Thus, the exemplary term “bottom” or “below” can include both “up” and “down” orientations.
[0043] See Figure 1The pen cap 1 of this application includes a body 10 and a protrusion 20. The body 10 is cylindrical and includes a first port 101, a second port 102, and a sidewall 103. The sidewall 103 connects the first port 101 and the second port 102. The first port 101 is mainly used for pen insertion, and the second port 102 is used for attaching an eraser. The sidewall 103 is a smooth transition surface from the first port 101 to the second port 102, and the sidewall 103 can be a surface similar to a cone. The cross-sectional area of the first port 101 is smaller than that of the second port 102. The first port 101, used for pen insertion, is smaller in size, and the second port 102, used for attaching an eraser, is larger in size. The first port 101 has a first center point 104, and the second port 102 has a second center point 105. The line connecting the first center point 104 and the second center point 105 is defined as the centerline 106 of the pen cap 1. The cross-section of the first port 101 refers to the surface of the first port 101 that is perpendicular to the center line 106 of the pen cap 1, and the cross-section of the second port 102 refers to the surface of the second port 102 that is perpendicular to the center line 106 of the pen cap 1. The protrusion 20 is provided on the side wall 103 and is used to support the side wall 103, so that when the pen cap 1 is placed on a plane, the center line 106 of the pen cap 1 is parallel to the plane.
[0044] The pen cap 1 of this application connects two ports of different sizes via a smoothly transitioning sidewall 103. This allows for a larger second port 102 for attaching the eraser, increasing the eraser's lifespan. Furthermore, the overall shape of the pen cap 1 is regular and smooth, simplifying manufacturing. By providing a protrusion 20 on the sidewall 103, which supports the sidewall 103, the centerline 106 of the pen cap 1 is parallel to the plane when placed on it. This ensures that when the pencil and eraser are assembled onto the pen cap 1 along the plane, the assembly path is parallel to the centerline 106 of the pen cap 1, without intersection, resulting in smooth assembly of the pencil and eraser to the pen cap 1 and improving assembly efficiency.
[0045] In this embodiment, the protrusion 20 includes a plurality of protruding strips 201, which are spaced apart on the sidewall 103. Each protruding strip 201 extends from the first port 101 to the second port 102. The distance between the side of the protruding strip 201 away from the sidewall 103 and the sidewall 103 is defined as the thickness of the protruding strip 201. The thickness of the protruding strip 201 gradually decreases from the first port 101 to the second port 102. The protruding strips 201 on the sidewall 103, with their thickness gradually decreasing from the first port 101 to the second port 102, provide a simple structure. This allows the centerline 106 of the pen cap 1 to be parallel to the plane when the pen cap 1 is placed on it. When the pencil and eraser are assembled onto the pen cap 1 along the plane, the assembly path is parallel to the centerline 106 of the pen cap 1 without intersecting, ensuring smooth assembly of the pencil and eraser with the pen cap 1. The protrusions 20 with strip-shaped structures, and the protruding strips 201 distributed at intervals on the side wall 103, can provide more comprehensive support for the side wall 103, ensuring that when the pen cap 1 is placed on a plane, the center line 106 of the pen cap 1 is parallel to the plane, so that the assembly path is parallel to the center line 106 of the pen cap 1, and the assembly of the pencil and eraser with the pen cap 1 is smooth and unobstructed, which can improve assembly efficiency and assembly accuracy.
[0046] In this embodiment, each protruding strip 201 has a first distance from the first port 101, and the first distances are the same. Each protruding strip 201 also has a second distance from the second port 102, and the second distances are the same. The first and second distances may be equal or unequal. In other embodiments, each protruding strip 201 has a first distance from the first port 101, and the first distances are the same; or each protruding strip 201 has a second distance from the second port 102, and the second distances are the same.
[0047] In this embodiment, the distances between adjacent protruding strips 201 are not equal. This design reduces the number of protruding strips 201 while providing good support. In this embodiment, the protruding strips 201 can be arranged in pairs.
[0048] In this embodiment, as Figure 2As shown, the line connecting the side of the protrusion 20 furthest from the sidewall 103 and the second port 102 is defined as the placement line 203 of the pen cap 1; when the pen cap 1 is placed on a plane, the placement line 203 of the pen cap 1 lies within the plane. That is, by providing the protrusion 20, it is possible to support the smaller first port 101 relative to the plane. This ensures that the centerline 106 of the pen cap 1 is parallel to the plane. When the pen and eraser are assembled onto the pen cap 1 along the plane, it ensures that the centerline 106 of the pen cap 1 does not intersect with the installation path of the pen and eraser, preventing interference between the pen cap 1 and the pen or eraser. This facilitates smooth assembly, improves assembly efficiency and accuracy, and reduces the difficulty of assembly operations.
[0049] In this embodiment, as Figure 3 As shown, the first port 101 is circular, and the second port 102 is an arc-shaped triangle. The circular first port 101 facilitates the easy installation of a pen, while the arc-shaped second port 102 facilitates the easy installation of an eraser. All three corners of the arc-shaped triangle of the second port 102 are rounded. A total of six protruding strips 201 are provided, arranged in pairs on the three sides of the arc-shaped triangle. In some other embodiments, the number of protruding strips 201 can also be 3, 4, 5, or 8, etc. See also... Figure 4 At this point, the sidewall 103 has a smooth surface resembling an arc triangle at the connection to the second port 102, and a smooth surface resembling a circle at the connection to the first port 101. Therefore, the sidewall 103 is a planar transition surface connecting the first port 101 and the second port 102. The protruding strips 201 are arranged in pairs on the sidewall 103. The second port 102 has a circumscribed circle 107, with the second center point 105 being the center of the circumscribed circle 107. In this embodiment, the diameter of the circumscribed circle 107 of the second port 102 is larger than the diameter of the first port 101.
[0050] The pen cap 1 of this application also has a second embodiment, wherein the pen cap 1 of the second embodiment is related to... Figures 1 to 4 Compared to the pen cap 1 of the second embodiment, it has a substantially the same structure in its basic construction. Therefore, in the following description of the pen cap 1 of this second embodiment, the description will not be repeated. Figures 1 to 4 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 4 The structures with the same structure as the pen cap 1 described in the embodiment are labeled with the same reference numerals. Therefore, in the following description of this embodiment, the structure with the same structure as the pen cap 1 will be mainly described. Figures 1 to 4 The differences between the pen cap 1 and the embodiment described herein will be explained. The main difference in the pen cap 1 of this second embodiment lies in the specific structure of the protrusion 20. Figures 1 to 4In one embodiment, the protrusion 20 is specifically structured as a protruding strip 201. In this second embodiment, see [link to embodiment]. Figure 5 The protrusion 20 includes a plurality of protruding blocks 202, which are spaced apart on the sidewall 103. The distance between the side of the protruding block 202 away from the sidewall 103 and the sidewall 103 is defined as the thickness of the protruding block 202. Then the thickness of the protruding block 202 near the first port 101 is greater than the thickness of the protruding block 202 near the second port 102.
[0051] In this embodiment, the protrusion 202 has a third distance from the first port 101, and the protrusions 202 with the same third distance have the same thickness.
[0052] The pen cap 1 of this application also has a third embodiment, wherein the pen cap 1 of the third embodiment is related to... Figures 1 to 4 Compared to the pen cap 1 of the third embodiment, it has a substantially the same structure in its basic construction. Therefore, in the following description of the pen cap 1 of this third embodiment, the description will not be repeated. Figures 1 to 4 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 4 The structures with the same structure as the pen cap 1 described in the embodiment are labeled with the same reference numerals. Therefore, in the following description of this embodiment, the structure with the same structure as the pen cap 1 will be mainly described. Figures 1 to 4 The differences between the pen cap 1 and the embodiments described will be explained. The main difference in the pen cap 1 of this third embodiment lies in the specific structure of the protrusion 20. Figures 1 to 4 In one embodiment, the protrusion 20 is specifically structured as a protruding strip 201. In this third embodiment, the protrusion 20 can be an annular protruding ring protruding from the sidewall 103. Only one protruding ring is provided, located near the first port 101, wherein the line connecting the side of the protruding ring away from the sidewall 103 and the second port 102 forms the placement line 203 of the pen cap 1.
[0053] The pen cap 1 of this application also has a fourth embodiment, wherein the pen cap 1 of the fourth embodiment is related to... Figures 1 to 4 Compared to the pen cap 1 of the previous embodiment, it has a substantially the same structure in its basic construction. Therefore, in the following description of the pen cap 1 of this fourth embodiment, the description will not be repeated. Figures 1 to 4 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 4 The structures with the same structure as the pen cap 1 described in the embodiment are labeled with the same reference numerals. Therefore, in the following description of this embodiment, the structure with the same structure as the pen cap 1 will be mainly described. Figures 1 to 4 The differences between the pen cap 1 and the embodiments described will be explained. The main difference in the pen cap 1 of this fourth embodiment lies in the specific structure of the protrusion 20. Figures 1 to 4In this embodiment, the protrusion 20 is specifically structured as a protruding strip 201. In this fourth embodiment, the protrusion 20 can be an annular protruding ring protruding from the sidewall 103. There can be multiple protruding rings, spaced apart from the first port 101 to the second port 102. The distance between the side of the protruding ring away from the sidewall 103 and the sidewall 103 is the thickness of the protruding ring. Therefore, the thickness of the protruding ring closer to the first port 101 is greater than the thickness of the protruding ring closer to the second port 102.
[0054] The pen cap 1 of this application also has a fifth embodiment, wherein the pen cap 1 of the fifth embodiment is related to... Figures 1 to 4 Compared to the pen cap 1 of the previous embodiment, it has a substantially the same structure in its basic construction. Therefore, in the following description of the pen cap 1 of this fifth embodiment, the description will not be repeated. Figures 1 to 4 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 4 The structures with the same structure as the pen cap 1 described in the embodiment are labeled with the same reference numerals. Therefore, in the following description of this embodiment, the structure with the same structure as the pen cap 1 will be mainly described. Figures 1 to 4 The differences between the pen cap 1 and the embodiments described will be explained. The main difference in the pen cap 1 of this fifth embodiment lies in the specific structure of the protrusion 20. Figures 1 to 4 In one embodiment, the protrusion 20 is specifically structured as a protruding strip 201. In this fifth embodiment, the protrusion 20 can be a protruding ring block protruding from the sidewall 103. The protruding ring blocks are spaced apart and distributed in a ring shape on the sidewall 103, similar to the third embodiment where a portion of the protruding ring is removed after being cut along the circumference, leaving the remaining protruding ring blocks spaced apart. The ring structure formed by the protruding ring blocks is close to the first port 101, wherein the line connecting the side of the protruding ring block away from the sidewall 103 and the second port 102 forms the placement line 203 of the pen cap 1.
[0055] The pen cap 1 of this application also has a sixth embodiment, wherein the pen cap 1 of the sixth embodiment is related to... Figures 1 to 4 Compared to the pen cap 1 of the previous embodiment, it has a substantially the same structure in its basic construction. Therefore, in the following description of the pen cap 1 of this sixth embodiment, the description will not be repeated. Figures 1 to 4 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 4 The structures with the same structure as the pen cap 1 described in the embodiment are labeled with the same reference numerals. Therefore, in the following description of this embodiment, the structure with the same structure as the pen cap 1 will be mainly described. Figures 1 to 4 The differences between the pen cap 1 and the embodiments described will be explained. The main difference in the pen cap 1 of this sixth embodiment lies in the specific structure of the protrusion 20. Figures 1 to 4In this embodiment, the protrusion 20 is specifically structured as a protruding strip 201. In this sixth embodiment, the protrusion 20 can be a protruding ring block protruding from the sidewall 103. The protruding ring blocks are spaced apart and distributed in a ring shape on the sidewall 103, similar to the protruding ring in the fourth embodiment, where a portion is removed after being cut along the circumference, leaving the remaining protruding ring blocks spaced apart. Furthermore, there are multiple ring-shaped structures formed by the protruding ring blocks, spaced apart from the first port 101 to the second port 102. The distance between the side of the protruding ring block away from the sidewall 103 and the sidewall 103 is the thickness of the protruding ring block. Therefore, the thickness of the protruding ring block closer to the first port 101 is greater than the thickness of the protruding ring block closer to the second port 102.
[0056] The pen cap 1 of this application also has a seventh embodiment, wherein the pen cap 1 of the seventh embodiment is related to... Figures 1 to 4 Compared to the pen cap 1 of the previous embodiment, it has a substantially the same structure in its basic construction. Therefore, in the following description of the pen cap 1 of this seventh embodiment, the description will not be repeated. Figures 1 to 4 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 4 The structures with the same structure as the pen cap 1 described in the embodiment are labeled with the same reference numerals. Therefore, in the following description of this embodiment, the structure with the same structure as the pen cap 1 will be mainly described. Figures 1 to 4 The differences between the pen cap 1 and the embodiments described will be explained. The main difference in the pen cap 1 of this seventh embodiment lies in the specific structure of the protrusion 20. Figures 1 to 4 In this embodiment, the protrusion 20 is entirely composed of protruding strips 201. In this seventh embodiment, the protrusion 20 includes protruding strips 201 and protruding blocks 202 (see [reference needed]). Figure 5 ), that is to Figures 1 to 4 In the embodiments, some protruding strips 201 are retained, while others are transformed into Figure 5 The structural form of the protruding block 202 is shown. For detailed dimensions and layout of the protruding strip 201 and protruding block 202, please refer to the first and second embodiments. The protruding strip 201 and protruding block 202 near the first port 101 have the same thickness.
[0057] In summary, the pen cap proposed in this application includes a body and a protrusion. The body is cylindrical and includes a first port, a second port, and a sidewall. The sidewall connects the first port and the second port and is a smooth transition surface from the first port to the second port. By connecting two ports of different sizes through a smooth transition sidewall, the second port for attaching the eraser can be larger, increasing the eraser's lifespan. Furthermore, the overall shape of the pen cap is regular and smooth, simplifying manufacturing. The cross-sectional area of the first port is smaller than that of the second port. The first port has a first center point, and the second port has a second center point. The line connecting the first and second center points is defined as the centerline of the pen cap. The protrusion is located on the sidewall and supports it, ensuring that when the pen cap is placed on a plane, its centerline is parallel to the plane. By providing the protrusion on the sidewall, which supports the sidewall, and ensuring that the centerline of the pen cap is parallel to the plane when the pen cap is placed on it, the assembly path of the pencil and eraser is parallel to the centerline of the pen cap without intersecting, allowing for smooth assembly of the pencil and eraser with the pen cap.
[0058] It is understood that the various embodiments / implementations provided by this utility model can be combined with each other without creating contradictions, and will not be described one by one here.
[0059] In the above exemplary embodiments, the pen cap proposed by this utility model is described using an application to a writing instrument as an example. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments to apply the relevant designs of this utility model to other types of devices, and these changes are still within the scope of the principle of the pen cap proposed by this utility model.
[0060] It should be noted that the pen caps shown in the accompanying drawings and described in this specification are merely a few examples among many pen caps from which the principles of this invention can be employed. It should be clearly understood that the principles of this invention are by no means limited to any detail or component of the pen caps shown in the accompanying drawings or described in this specification.
[0061] In the embodiments of the utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the utility model according to the specific circumstances.
[0062] In the description of the utility model embodiments, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the utility model embodiments and simplifying the description, and do not indicate or imply that the device or unit 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 the utility model embodiments.
[0063] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the utility model. When introducing elements / components / etc. described and / or illustrated herein, the terms "a," "a," and "the above" are used to indicate the presence of one or more elements / components / etc. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0064] The above are merely preferred embodiments of the utility model and are not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the protection scope of the utility model.
Claims
1. A pen cap, characterized in that, include: The body is cylindrical and includes a first port, a second port, and a sidewall. The sidewall connects the first port and the second port and is a smooth transition surface from the first port to the second port. The cross-sectional area of the first port is smaller than that of the second port. The first port has a first center point, and the second port has a second center point. The line connecting the first center point and the second center point is defined as the center line of the pen cap. A protrusion is provided on the side wall and is used to support the side wall such that when the pen cap is placed on a plane, the center line of the pen cap is parallel to the plane.
2. The pen cap as described in claim 1, characterized in that, The protrusion includes a plurality of protruding strips, which are spaced apart on the sidewall. Each protruding strip extends from the first port to the second port. The distance between the side of the protruding strip away from the sidewall and the sidewall is defined as the thickness of the protruding strip. The thickness of the protruding strip gradually decreases from the first port to the second port.
3. The pen cap as described in claim 2, characterized in that, Each of the protruding strips has a first distance from the first port, the first distance being the same, and / or; Each of the protruding strips has a second distance from the second port, and the second distance is the same.
4. The pen cap as described in claim 3, characterized in that, The distances between adjacent protruding strips are not equal.
5. The pen cap as described in claim 1, characterized in that, The protrusion includes a plurality of protruding blocks, which are spaced apart on the sidewall. The distance between the side of the protruding block away from the sidewall and the sidewall is defined as the thickness of the protruding block. The thickness of the protruding block near the first port is greater than the thickness of the protruding block near the second port.
6. The pen cap as described in claim 5, characterized in that, The protruding block has a third distance from the first port, and the protruding blocks having the same third distance have the same thickness.
7. The pen cap as described in any one of claims 1 to 6, characterized in that, The line connecting the side of the protrusion away from the sidewall and the second port is defined as the placement line of the pen cap; when the pen cap is placed on the plane, the placement line of the pen cap is located in the plane.
8. The pen cap as described in any one of claims 1 to 6, characterized in that, The first port is circular, the second port is an arc triangle, the second port has an external circle, and the second center point is the center of the external circle.
9. The pen cap as described in claim 8, characterized in that, The diameter of the circumscribed circle of the second port is larger than the diameter of the first port.
10. The pen cap as described in any one of claims 1 to 6, characterized in that, The first port is used for pen insertion, and the second port is used for setting the eraser.