Rotary fixing structure for tail cover of pen

Abstract

The utility model is applicable to the technical field of cosmetic pencils, and provides a rotary fixing structure for a tail cover of a pen, which comprises a pen body component, a fixing part is sleeved at one end of the pen body component, tail cover components are sleeved at the end part of the pen body component and the outer part of the fixing part, and the pen body component comprises a rotary rod. The device solves the problems that a clamping fixing structure of an existing pen body and the pen body are integrally formed, the clamping fixing structure and the tail cover are prone to abrasion after multiple times of insertion and extraction, the tail cover is prone to falling off from the end of the pen body, the pen body or the tail cover needs to be integrally replaced, and therefore cost is greatly increased. According to the device, the ring body with the opening is arranged outside the rotary telescopic structure in a sleeving mode, and when the tail cover is connected, the ring body is clamped into an annular groove in the tail cover to connect the pen body and the tail cover. The inner diameter of the ring body can be enlarged through the opening, the ring body can be conveniently detached and replaced from the rotary telescopic structure, overall replacement is not needed when abrasion is serious, and cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic pen technology, and more specifically, it relates to a rotating and fixing structure for a pen end cap. Background Technology

[0002] A makeup pen is a tool used for makeup. It comes in various types and uses. A makeup pen is mainly composed of a pen tip, a pen core, a pen body, a cap, and functional components. The pen body is usually a cylindrical rod made of materials such as plastic or metal. It integrates a rotating and telescopic mechanism to push the pen core out or retract. The cap also serves to protect the rotating and telescopic mechanism and prevent the pen core from being overextended due to accidental contact by the user.

[0003] When connecting the body and end cap of an existing makeup pen, a snap-fit ​​fixing structure needs to be set at the end of the pen body. That is, while the rotating telescopic structure is fitted onto the end cap, the snap-fit ​​fixing structure is used to complete the interference fit with the pen body to prevent the end cap from falling off.

[0004] However, the existing snap-fit ​​fixing structure is integrally molded with the pen body. After repeated insertion and removal, the snap-fit ​​fixing structure and the tail cap will wear out. After wear, the tail cap and snap-fit ​​fixing structure can no longer be used, and the tail cap is also easy to fall off from the end of the pen body. At this time, the entire pen body or tail cap needs to be replaced to continue to be used, which greatly increases the cost. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a rotating and fixing structure for pen end caps.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pen end cap rotation fixing structure, including a pen body assembly, a fixing member sleeved at one end of the pen body assembly, and an end cap assembly sleeved at both the end of the pen body assembly and the outside of the fixing member.

[0007] The pen body assembly includes a rotating rod, and the fixing member and the end cap assembly are both sleeved on the outside of the rotating rod.

[0008] The fixing member includes a ring sleeved on the outside of the rotating rod. The outer side wall of the ring has an opening, and the inner side wall of the ring has a groove at a position opposite to the opening.

[0009] The tail cap assembly includes a cover body sleeved on the outside of the rotating rod, and an annular groove is formed on the inner wall of the cover body near the insertion port, the annular groove being adapted to the annular body.

[0010] The present invention is further configured such that: the end of the rotating rod away from the cover is connected to the pen body, and the diameter of the pen body is the same as the diameter of the cover.

[0011] The present invention is further configured such that: two mounting platforms are symmetrically provided on the outer side wall of the rotating rod, and the surfaces of the two mounting platforms are integrally formed with anti-slip strips; the diameter of the rotating rod and the mounting platforms combined is smaller than the inner diameter of the ring.

[0012] The present invention is further configured such that: a limiting groove is provided on the outer side wall of the rotating rod, and the width of the limiting groove is adapted to the width of the ring body.

[0013] By adopting the above technical solution, the ring body has an opening and is fitted onto the outside of the rotating telescopic structure. When the end cap is connected, the ring body is stuck in the annular groove inside the end cap, thereby achieving the purpose of connecting the end cap and the pen body. Furthermore, the ring body can expand its internal diameter through the opening, making it easy to disassemble and replace from the rotating telescopic structure. When the wear is severe, there is no need to replace the entire pen body or end cap, which greatly reduces costs.

[0014] A groove is provided on the inner wall of the ring opposite the opening. When the diameter of the ring is increased, the groove reduces the width of the inner wall of the ring relative to the opening, so that the diameter can be easily increased while maintaining the overall shape of the ring. Moreover, because there is a gap at the opening, the diameter of the ring can be increased outward and decreased inward based on the original shape. When the tail cap is installed, the ring is first squeezed inward by the adapter platform. When the ring reaches the annular groove, it recovers its shape in the annular groove due to its own elasticity, thereby achieving the purpose of snapping the tail cap.

[0015] The present invention is further configured such that: an arc-shaped portion is provided on the outer side wall of the ring body, and the shape of the arc-shaped portion is adapted to the internal shape of the annular groove.

[0016] The present invention is further configured such that: an adapter platform is provided on the inner wall of the cover, the adapter platform is arranged adjacent to the annular groove, and the adapter platform is located between the annular groove and the insertion port of the cover.

[0017] The present invention is further configured such that: an adapter ring is integrally formed at one end of the pen body near the rotating rod, and the outer diameter of the adapter ring is adapted to the inner diameter of the adapter platform.

[0018] By adopting the above technical solution, an arc-shaped part is provided on the outer wall of the ring, and the inner cross-sectional shape of the annular groove is set to a semi-circle. When the tail cap squeezes the ring, it first contacts the arc-shaped part, making it easy for the ring to enter the fitting platform position of the tail cap. As the ring continues to go deeper, the arc-shaped part on the outer wall of the ring fits and conforms to the inner wall of the annular groove. When the tail cap is pulled out, the ring can be quickly slid out by the shape of the arc-shaped part and the inner wall of the annular groove, which greatly improves the ease of use.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] (1) By setting an open ring body, the ring body is fitted onto the outside of the rotating telescopic structure. When the end cap is connected, the ring body is stuck in the annular groove inside the end cap, thereby achieving the purpose of connecting the end cap and the pen body. Furthermore, the ring body can expand its internal diameter through the opening, making it easy to disassemble and replace from the rotating telescopic structure. When the wear is severe, there is no need to replace the entire pen body or end cap, which greatly reduces the cost.

[0021] (2) A groove is set on the inner wall of the ring opposite to the opening. When the ring expands its diameter, the groove reduces the width of the inner wall of the ring relative to the opening, so that the ring can expand its diameter while maintaining its overall shape. Moreover, because there is a gap at the opening, the ring can expand its diameter outward and shrink its diameter inward based on its original shape. When the tail cap is installed, the ring is first squeezed inward by the adapter platform. When the ring reaches the annular groove, it recovers its shape in the annular groove due to its own elasticity, thereby achieving the purpose of snapping the tail cap. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a pen end cap rotation fixing structure according to the present invention.

[0023] Figure 2 for Figure 1 A schematic diagram of a localized explosion structure.

[0024] Figure 3 This is a schematic diagram of the fixing component structure in this utility model.

[0025] Figure 4 This is a schematic diagram of the tail cap assembly structure in this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. Pen body assembly; 11. Pen body; 12. Rotating rod; 13. Anti-slip strip; 14. Mounting platform; 15. Limiting groove; 16. Adapter ring;

[0027] 2. Fastener; 21. Ring body; 22. Arc-shaped part; 23. Opening; 24. Groove;

[0028] 3. Tail cap assembly; 31. Cap body; 32. Annular groove; 33. Adapter platform. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] Please see Figures 1-4 The present invention provides the following technical solution:

[0032] Example 1, see Figure 1 A pen cap rotation fixing structure includes a pen body assembly 1, a fixing member 2 is fitted at one end of the pen body assembly 1, and a cap assembly 3 is fitted at the end of the pen body assembly 1 and outside the fixing member 2. Since the pen body assembly 1 needs to have a built-in rotation telescopic mechanism that extends to the outside, the pen body assembly 1 and the cap assembly 3 need to be plugged into each other in the idle state. The cap assembly 3 is used to protect the extended rotation telescopic mechanism, while the fixing member 2 is used to restrict the pen body assembly 1 and the cap assembly 3 to avoid the risk of the cap assembly 3 falling off the pen body assembly 1.

[0033] The specific structure of pen body component 1 is as follows:

[0034] The pen body assembly 1 includes a rotating rod 12, a fixing member 2 and a tail cap assembly 3, all of which are sleeved on the outside of the rotating rod 12. The end of the rotating rod 12 away from the tail cap assembly 3 is connected to the pen body 11. This rotating rod 12 is part of the built-in rotating telescopic mechanism of the pen body 11, that is, the user needs to grasp the rotating rod 12 with his hand and rotate it to adjust the pen refill inside the pen body 11.

[0035] Two mounting platforms 14 are symmetrically provided on the outer side wall of the rotating rod 12. The surfaces of the two mounting platforms 14 are integrally formed with anti-slip strips 13. The outer side wall of the rotating rod 12 is provided with a limiting groove 15. The anti-slip strips 13 on the mounting platforms 14 are used to increase the friction between the user's hand and the device when gripping. If the surface is smooth, the user will slip when gripping. The limiting groove 15 is used to limit the fixing part 2, so that when the fixing part 2 is installed on the rotating rod 12, it can be locked inside the limiting groove 15, preventing the fixing part 2 from falling off together with the end cap assembly 3 when it is separated from the pen body 11.

[0036] The tail cap assembly 3 includes a cap 31 that is fitted onto the outside of the rotating rod 12. An annular groove 32 is formed on the inner wall of the cap 31 near the insertion port. An adapter platform 33 is formed on the inner wall of the cap 31. The adapter platform 33 is adjacent to the annular groove 32 and is located between the annular groove 32 and the insertion port of the cap 31. An adapter ring 16 is integrally formed on one end of the pen body 11 near the rotating rod 12. The outer diameter of the adapter ring 16 is matched with the inner diameter of the adapter platform 33. The cap 31 is used to protect the outside of the rotating rod 12. During the fitting process, the adapter platform 33 is fitted onto the outside of the adapter ring 16, and the diameter of the pen body 11 is the same as the diameter of the cap 31. Therefore, after the fitting is completed, the pen body 11 and the cap 31 can be wedged together, and the fixing member 2 slides into the inside of the annular groove 32 to engage, thus achieving the purpose of fitting.

[0037] The fixing component 2 includes a ring 21 sleeved on the outside of the rotating rod 12. The annular groove 32 is adapted to the ring 21. The width of the limiting groove 15 is adapted to the width of the ring 21. The diameter of the rotating rod 12 and the mounting platform 14 combined is smaller than the inner diameter of the ring 21. This operation facilitates the sleeve of the ring 21 without interference. The outer wall of the ring 21 has an opening 23. By setting the ring with the opening, the ring is sleeved on the outside of the rotating telescopic structure. When the tail cap is connected, the ring is stuck in the annular groove inside the tail cap, thereby achieving the purpose of connecting the tail cap and the pen body. Furthermore, the ring can expand its inner diameter through the opening, making it easy to disassemble and replace from the rotating telescopic structure. When the wear is severe, there is no need to replace the entire pen body or tail cap, which greatly reduces costs.

[0038] A groove 24 is provided on the inner wall of the ring 21, opposite to the opening 23. When the ring expands in diameter, the groove reduces the width of the inner wall relative to the opening, allowing the ring to expand in diameter while maintaining its overall shape. Furthermore, because there is a gap at the opening, the ring can expand in diameter outwards and shrink inwards while maintaining its original shape. When the tail cap is installed, the ring is first squeezed inwards by the adapter platform. When the ring reaches the annular groove, it recovers its shape within the groove due to its own elasticity, thus achieving the purpose of snapping the tail cap in place.

[0039] An arc-shaped portion 22 is provided on the outer wall of the ring body 21. The shape of the arc-shaped portion 22 is adapted to the internal shape of the annular groove 32. By providing an arc-shaped portion on the outer wall of the ring body and setting the internal cross-sectional shape of the annular groove to be semi-circular, the ring body first contacts the arc-shaped portion when the tail cap squeezes the ring body, making it easy for the ring body to enter the fitting platform position of the tail cap. When the ring body continues to go deeper, the arc-shaped portion on the outer wall of the ring body adapts and fits with the inner wall of the annular groove. When the tail cap is pulled out, the ring body can be quickly slid out through the cooperation of the arc-shaped portion and the inner wall shape of the annular groove, which greatly improves the ease of use.

[0040] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

Claims

1. A rotating and fixing structure for a pen cap, characterized in that: The pen body assembly (1) is provided with a fixing member (2) at one end of the pen body assembly (1), and a tail cap assembly (3) is provided on the end of the pen body assembly (1) and the outside of the fixing member (2). The pen body assembly (1) includes a rotating rod (12), and the fixing member (2) and the tail cap assembly (3) are both sleeved on the outside of the rotating rod (12); The fixing member (2) includes a ring (21) sleeved on the outside of the rotating rod (12). The outer side wall of the ring (21) has an opening (23), and the inner side wall of the ring (21) has a groove (24) located opposite to the opening (23). The tail cap assembly (3) includes a cover (31) sleeved on the outside of the rotating rod (12). An annular groove (32) is provided on the inner wall of the cover (31) near the insertion port. The annular groove (32) and the ring (21) are adapted to each other.

2. The pen end cap rotation fixing structure according to claim 1, characterized in that: The end of the rotating rod (12) away from the cover (31) is connected to the pen body (11), and the diameter of the pen body (11) is the same as the diameter of the cover (31).

3. The pen end cap rotation fixing structure according to claim 2, characterized in that: Two mounting platforms (14) are symmetrically provided on the outer side wall of the rotating rod (12). The surfaces of the two mounting platforms (14) are integrally formed with anti-slip strips (13). The diameter of the rotating rod (12) and the mounting platforms (14) combined is smaller than the inner diameter of the ring (21).

4. The pen end cap rotation fixing structure according to claim 3, characterized in that: The outer wall of the rotating rod (12) is provided with a limiting groove (15), and the width of the limiting groove (15) is adapted to the width of the ring (21).

5. The pen end cap rotation fixing structure according to claim 1, characterized in that: An arc-shaped portion (22) is provided on the outer wall of the ring (21), and the shape of the arc-shaped portion (22) is adapted to the internal shape of the annular groove (32).

6. The pen end cap rotation fixing structure according to claim 5, characterized in that: The inner wall of the cover (31) is provided with an adapter platform (33), which is adjacent to the annular groove (32) and is located between the annular groove (32) and the insertion port of the cover (31).

7. The pen end cap rotation fixing structure according to claim 6, characterized in that: The pen body (11) has an integrally formed adapter ring (16) at one end near the rotating rod (12), and the outer diameter of the adapter ring (16) is adapted to the inner diameter of the adapter platform (33).

Images