A cap for preventing a marker pen from loosening

Abstract

The utility model relates to stationery technical field, concretely relates to a marker of cap anti -loosening, including pen holder, pen head, cap and anti -loosening structure. The utility model overcomes the deficiency of prior art, through the mechanical interlock of the clamping hook and annular clamping edge, has formed reliable connection, effectively avoided the accidental loosening of cap due to vibration, collision or slight pulling, protects the pen head from drying, and the anti -loosening structure is mainly realized through the simple buckle structure designed on the cap and pen holder, does not need to increase additional parts, is easy to production and manufacture, will not significantly increase cost, has clear'click'feeling when buckling and pulling off the cap, and the user can clearly perceive whether the cap has been installed in place, and the required force is moderate when opening, which ensures the anti -loosening effect and does not cause opening difficulty.

Description

Technical Field

[0001] This utility model relates to the field of stationery technology, specifically to a marker pen with a cap that prevents it from coming loose. Background Technology

[0002] A marker pen is a common writing or drawing tool, which usually consists of three parts: the pen body, the nib, and the cap. The main function of the cap is to protect the nib from drying out and being damaged, and also to prevent the ink from the nib from staining other items. Currently, most marker pens on the market connect the cap and the pen body through a simple interference fit (plug-in) method.

[0003] This connection method has obvious drawbacks: First, after repeated insertion and removal, the interface of the pen cap or pen barrel is prone to wear, resulting in a reduction in the interference fit, which makes the pen cap loose and easy to fall off on its own; Second, during transportation or carrying, if subjected to external pressure or vibration, the pen cap is also prone to loosening. Once the pen cap falls off, the pen tip will be exposed to the air, and the ink will evaporate and dry quickly, rendering the marker ineffective and causing waste; At the same time, the leaked ink will also contaminate the pencil case, books or other items. Therefore, providing a marker pen with a simple structure, reliable durability, and effective prevention of cap loosening when not in use is an urgent problem to be solved in this field. To this end, a marker pen with an anti-loosening cap is proposed. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a marker pen with a cap that prevents it from coming loose, which overcomes the shortcomings of the prior art and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a marker pen with an anti-loosening cap, comprising a pen barrel, a pen tip disposed at the front end of the pen barrel, and a pen cap for covering the pen tip, wherein the connection between the pen barrel and the pen cap is provided with an anti-loosening structure; The anti-loosening structure includes: The engaging part is located on the outer peripheral wall of the pen barrel, and it is a raised annular locking ridge; An elastic buckle is provided at the top of the inner cavity of the pen cap. It includes a pair of symmetrically arranged elastic buckle arms, and the inner side of the free end of the buckle arm is provided with a buckle hook that is adapted to the annular buckle edge. A guide ramp is provided at the inner opening of the pen cap; When the pen cap is fastened, the open end of the pen cap is inserted along the axial direction of the pen barrel. The guide ramp guides the end of the pen barrel into the inner cavity of the pen cap, and the annular locking ridge squeezes and opens the pair of locking arms. After the annular locking ridge passes the hook, the locking arms return to their elasticity, so that the hook is tightly engaged below the annular locking ridge, thereby locking the pen cap. When it is necessary to open the pen cap, the user applies an axial pulling force, and the locking arms are opened again, separating the hook from the annular locking ridge, so that the pen cap can be removed.

[0006] As a preferred technical solution of this utility model, the clip arm is integrally formed from elastic plastic into the inner top wall of the pen cap.

[0007] As a preferred embodiment of this utility model, the cross-section of the annular rib is semi-circular or trapezoidal, and the shape of the hook matches it.

[0008] As a preferred technical solution of this utility model, the inner cavity of the pen cap is also provided with a limiting ring platform, which is used to abut against the end of the pen barrel when the pen cap is fastened in place, to prevent the pen cap from being over-fitted.

[0009] As a preferred embodiment of this utility model, the outer wall of the pen cap is provided with anti-slip texture.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. The mechanical interlocking of the hook and the ring-shaped ridge forms a reliable connection, effectively preventing the pen cap from accidentally coming loose due to vibration, collision or slight pulling, and protecting the pen tip from drying out.

[0011] 2. The anti-loosening structure is mainly achieved by designing a simple snap-fit ​​structure on the pen cap and pen barrel. No additional parts are needed, making it easy to manufacture and not significantly increasing costs.

[0012] 3. The pen cap has a clear "click" feel when it is fastened and unfastened, allowing users to clearly perceive whether the cap is properly installed. The force required to open it is moderate, ensuring both the anti-slip effect and the ease of opening. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a cross-sectional view of the pen cap and a schematic diagram of the pen barrel assembly of this utility model; Figure 3 This is a three-dimensional cross-sectional view of the pen cap of this utility model; Figure 4 For the present utility model Figure 2 A magnified view of a portion of point A in the middle.

[0014] In the diagram: 1. Pen barrel; 101. Circular retaining edge; 2. Pen tip; 3. Pen cap; 301. Retaining arm; 302. Retaining hook; 303. Guide slope; 304. Limiting ring platform; 305. Anti-slip texture. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 A marker pen with a cap designed to prevent it from coming loose, mainly composed of a pen barrel 1, a pen tip 2, and a pen cap 3.

[0017] The pen barrel 1 is usually hollow and used to store ink. The pen tip 2 is fixed to the front end of the pen barrel 1. On the outer peripheral wall of the pen barrel 1 near the pen tip 2, there is a raised annular retaining ridge 101. The cross-section of the annular retaining ridge 101 is preferably semi-circular to facilitate engagement and disengagement.

[0018] The pen cap 3 is used to cover the pen tip 2. It is hollow inside. The top of the inner cavity of the pen cap 3 is integrally formed with a pair of symmetrically arranged elastic buckles. The elastic buckles are made of elastic plastic material and include two downwardly extending buckle arms 301. The free ends of the buckle arms 301 protrude inward to form hooks 302. The inner surface of the hooks 302 is preferably an arc surface that matches the annular buckle 101. At the opening of the inner cavity of the pen cap 3, an inwardly inclined guide slope 303 is processed to guide the pen barrel 1 to be inserted smoothly when the pen cap 3 is fastened. In addition, the inner cavity of the pen cap 3 is also provided with an annular limiting ring platform 304 to limit the insertion depth of the pen cap 3 and prevent the pen tip 2 from touching the top. The outer wall of the pen cap 3 is also processed with anti-slip texture 305 to facilitate the user's grip and application of force.

[0019] Working principle: When fastening the pen cap 3, align the opening of the pen cap 3 with the front end of the pen barrel 1 and slide it in axially. The end of the pen barrel 1 first contacts the guide slope 303 and is guided to the center of the pen cap 3. Continue to press down, and the annular locking ridge 101 on the pen barrel 1 will contact the hooks 302 of a pair of locking arms 301. The slope of the annular locking ridge 101 will squeeze the two locking arms 301, causing them to elastically open outward. When the annular locking ridge 101 completely passes the hooks 302, the squeezing force applied to the locking arms 301 will disappear. The locking arms 301 will quickly rebound due to their own elasticity, so that the hooks 302 are tightly fastened below the annular locking ridge 101. At the same time, the end of the pen barrel 1 abuts against the limiting ring platform 304. At this time, a clear "click" sound will be heard, indicating that the pen cap 3 has been locked in place.

[0020] When it is necessary to remove the pen cap 3, the user holds the anti-slip texture 305 on the pen cap 3 and applies a pulling force along the axis. This pulling force will cause the hook 302 to be squeezed by the annular locking ridge 101 again, forcing the locking arm 301 to elastically open outward, thereby separating the hook 302 from the annular locking ridge 101, and the pen cap 3 can be removed smoothly.

[0021] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," 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.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A marker pen with an anti-loosening cap, comprising a pen barrel (1), a pen tip (2) disposed at the front end of the pen barrel (1), and a pen cap (3) for covering the pen tip (2), characterized in that: The connection between the pen barrel (1) and the pen cap (3) is provided with an anti-loosening structure; The anti-loosening structure includes a locking part disposed on the outer peripheral wall of the pen barrel (1) and an elastic buckle disposed on the top of the inner cavity of the pen cap (3); The engaging part is a raised annular ridge (101). The elastic buckle includes a pair of symmetrically arranged elastic buckle arms (301), and the inner side of the free end of the buckle arm (301) is provided with a buckle hook (302) that is adapted to the annular buckle edge (101). When the pen cap is fastened, the annular locking ridge (101) can squeeze and open the locking arm (301) and, after passing the locking hook (302), the elastic recovery of the locking arm (301) causes the locking hook (302) to be tightly fastened below the annular locking ridge (101).

2. A marker with an anti-loosening cap as described in claim 1, characterized in that: The card arm (301) is integrally formed from elastic plastic material and the inner top wall of the pen cap (3).

3. A marker pen with an anti-loosening cap as described in claim 1, characterized in that: The cross-section of the annular rib (101) is semi-circular or trapezoidal, and the shape of the hook (302) matches it.

4. A marker with an anti-loosening cap as described in claim 1, characterized in that: The inner cavity opening of the pen cap (3) is provided with a guide slope (303) to guide the end of the pen barrel (1) smoothly into the inner cavity of the pen cap (3).

5. A marker pen with an anti-loosening cap as described in claim 1, characterized in that: The inner cavity of the pen cap (3) is also provided with a limiting ring (304) for abutting against the end of the pen barrel (1) when the pen cap (3) is fastened in place.

6. A marker pen with an anti-loosening cap as described in claim 1, characterized in that: The outer wall of the pen cap (3) is provided with anti-slip texture (305).

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