A quick release structure of a pen accessory

Abstract

The application discloses a quick-release structure of a pen accessory, which is used for detachably connecting a pen body and a tail accessory. A reset spring is arranged in the pen body, and the elastic force of the reset spring directly or indirectly acts on the tail accessory, so that the tail accessory has a tendency of continuously moving away from the pen body. The structure comprises a locking mechanism, an unlocking side slope and / or an unlocking channel, and an anti-rotation boss. The locking mechanism keeps the pen body and the tail accessory fixed through the clamping of a first matching part and a second matching part. The anti-rotation boss is configured to limit the rotation of the second matching part in a non-pressing state to prevent accidental falling, and when the tail accessory is pressed, the second matching part is out of the rotation limiting range to allow rotation unlocking. After unlocking, the tail accessory is pushed out under the elastic force of the reset spring to realize separation. Through the three-step unlocking logic of "pressing-rotating-popping", the application effectively prevents the accessory from falling due to accidental rotation, is convenient to operate, and is reliable in connection.

Description

Technical Field

[0001] This invention relates to the field of writing instrument accessories technology, specifically a quick-release structure for detachably connecting the pen body and the tail accessory, suitable for the expansion and replacement of various functional accessories. Background Technology

[0002] Traditional pens typically have a fixed structure with a single function at the end, making it impossible to flexibly replace the end accessories according to user needs. Even when detachable structures exist, they often use threaded connections or clips for fixation, resulting in inconvenient assembly and disassembly, easy loosening, and cumbersome operation. In addition, removing the end of some pens can affect the extension of the pen refill, leading to inconvenience in use.

[0003] The applicant's earlier Chinese patent application (application number CN201811604421.X) disclosed an external rotating pull-out pen, which, by setting a locking and fixing groove and a fixing slot on the pen barrel, and cooperating with a buckle inside the pen barrel, enables the direct rotation to remove the tail accessory. This solution is convenient to operate, but because it can be directly rotated and removed in the locked state, the tail accessory may unexpectedly fall off due to accidental rotation during daily carrying or use.

[0004] Therefore, how to effectively prevent the accidental detachment of tail parts while maintaining ease of disassembly and assembly has become a technical problem that needs to be solved in this field. Summary of the Invention

[0005] The present invention aims to solve the problem in the prior art that the tail accessory of the pen is easily detached due to accidental rotation or pulling after being connected to the pen body. At the same time, it provides a quick-release accessory structure that is easy to operate, reliable in connection and can effectively prevent accidental touch.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A quick-release structure for pen accessories is disclosed for detachably connecting the pen body and the tail accessory (A). The pen body has an independent lead-out mechanism and an internal return spring. The return spring is housed within the pen body, and its elastic force acts directly or indirectly on the tail accessory (A), causing the tail accessory (A) to have a continuous tendency to move away from the pen body.

[0007] The quick-release structure includes a locking mechanism, a rotation unlocking assembly, and an anti-rotation boss (11A). The locking mechanism and the rotation unlocking assembly are respectively disposed on the pen body or the tail accessory (A).

[0008] The locking mechanism is used to keep the pen body and the tail accessory (A) relatively fixed, and includes a first engaging part (11) and a second engaging part (21) that engage mechanically. One of the first engaging part (11) and the second engaging part (21) is disposed on the pen body, and the other is disposed on the tail accessory (A). The rotation unlocking assembly includes an unlocking ramp (B) and / or an unlocking channel (B1).

[0009] The anti-rotation boss (11A) is correspondingly disposed on the component where the locking mechanism is located, and is configured to: restrict the rotation of the second mating part (21) in the non-pressed state; when the tail accessory (A) is pressed toward the pen body, the second mating part (21) moves axially to disengage from the rotation restriction range of the anti-rotation boss (11A), thereby allowing rotational unlocking. After unlocking, the tail accessory (A) is pushed out by the elastic force of the return spring to achieve separation.

[0010] The aforementioned three-step unlocking logic of "press-rotate-spring" is the core difference between this invention and existing technologies. Because the anti-rotation boss (11A) physically limits the second mating part (21) when not pressed, even if the tail accessory (A) is subjected to an unexpected rotational force, it cannot rotate, thus effectively preventing unintended detachment. Unlocking can only be completed when the user consciously presses first and then rotates. Simultaneously, the existing reset spring within the pen body provides an outward pushing force, allowing the tail accessory (A) to automatically pop out after the engagement is released, eliminating the need for manual retraction and further enhancing ease of operation.

[0011] The mounting and fitting methods of the tail accessory (A) and the pen body are at least divided into the following two types: 1. The first fitting part (11) is a fitting boss or a fitting groove, and the second fitting part (21) is an elastic claw that can engage with the first fitting part (11); 2. The first fitting part (11) is a mounting boss, and the second fitting part (21) is an engaging boss that can engage with the first fitting part (11).

[0012] Preferably, the component containing the first mating part (11) may also be provided with a mating guide wall (C) to assist in guiding during assembly. The first mating part (11) and / or the second mating part (21) may be provided with a mating ramp (C1) to make the engagement process smoother.

[0013] Preferably, the locking mechanism, the rotating unlocking component, and the pressing and extending mechanism of the pen body are independent of each other, so that the disassembly and assembly of the tail accessory (A) does not affect the extension or retraction of the pen tip.

[0014] Preferably, a magnetic locking mechanism may also be included, which uses magnetic force to assist docking and axial retention by means of magnetic parts (H) provided on the pen body and the tail accessory (A), making the connection more secure.

[0015] Preferably, the unlocking ramp (B) can be provided on the second mating part (21) and / or the first mating part (11), and the unlocking channel (B1) is provided next to the first mating part (11).

[0016] Preferably, a reinforced protective boss (Q) can be provided at the upper or lower end of the first mating part (11), forming an anti-detachment narrow opening (K) between it and the anti-rotation boss (11A). The outer diameter of the second mating part (21) is larger than the inner diameter of the anti-detachment narrow opening (K), so that in the locked state, the second mating part (21) is restricted within the anti-detachment narrow opening (K) and cannot be directly detached. Furthermore, an anti-detachment strong detachment slope (K1) can also be provided at the anti-detachment narrow opening (K) to guide the second mating part (21) to deform and cross the anti-detachment narrow opening (K) when subjected to a separation force exceeding a set threshold, thereby achieving forced separation.

[0017] Preferably, the pen body and / or tail accessory (A) may be provided with a switching boss (D) or a switching ramp (D1) to guide the first mating part (11) and the second mating part (21) to disengage during relative rotation.

[0018] Preferably, the tail accessory (A) may also be provided with a top core (A1) to hold the pen refill in place during installation, thereby achieving indirect reset using the reset spring inside the pen body. The anti-rotation boss (11A) may be a separate accessory or directly formed on the pen body and / or the tail accessory (A).

[0019] Preferably, the tail accessory (A) is at least one of an eraser, stylus, laser pointer, light, stamp, pen clip, and extension grip.

[0020] The present invention also provides a two-stage quick-release system including a conversion element (Z): the conversion element (Z) is detachably mounted to the tail of the pen body via a first quick-release structure; the tail accessory (A) is detachably mounted to the tail of the conversion element (Z) via a second quick-release structure. The first quick-release structure and / or the second quick-release structure are either of the aforementioned accessory quick-release structures. By introducing the conversion element (Z), modular two-stage expansion functionality is achieved. Beneficial effects

[0021] Compared with the prior art, the present invention has the following beneficial effects: 1. Effectively prevents accidental detachment. By physically limiting the anti-rotation boss (11A), the rotational freedom of the second mating part (21) is locked when not pressed, which fundamentally eliminates the possibility of the tail accessory (A) falling off due to accidental contact or rotation, and greatly improves reliability.

[0022] II. Convenient operation and clear feedback. The three-step operation of "press-rotate-release" has a clear action logic and conforms to the user's intuition. The pressing action releases the anti-rotation limit, the rotation action completes the unlocking, and the reset spring automatically pushes out the tail accessory (A). The whole process is completed in one go and there is no need to manually pull it back.

[0023] Third, independent functionality. The quick-release structure is independent of the pen's lead ejection mechanism, and the removal and installation of parts will not change the state of the pen lead, resulting in a good user experience.

[0024] IV. Secure Connection. Mechanical locking and optional magnetic assisted connection ensure a stable connection that will not loosen due to writing vibrations.

[0025] Fifth, the structure is simple and the cost is controllable. The automatic pop-out function is provided by the existing return spring in the pen body, eliminating the need for a separate spring for the quick-release structure, reducing the number of parts and lowering manufacturing costs.

[0026] VI. Modularity and High Scalability. By introducing conversion parts (Z) and a variety of tail accessories (A), an open functional platform is built to meet users' personalized and functional needs. Attached Figure Description

[0027] Figure 1 This is a partial cross-sectional view of the quick-release structure in the locked state in Embodiment 1 of the present invention.

[0028] Figure 2 This is a partial cross-sectional view of the quick-release structure in Embodiment 1 of the present invention during the unlocking process.

[0029] Figure 3 This is a partial cross-sectional view of the quick-release structure in the locked state in Embodiment 2 of the present invention.

[0030] Figure 4 This is a partial cross-sectional view of the quick-release structure in the locked state in Embodiment 3 of the present invention.

[0031] Figure 5 This is a partial cross-sectional view of the quick-release structure in Embodiment 3 of the present invention during the unlocking process.

[0032] Figure label: A. Tail-end accessories; A1. Top core; 11. First mating part; 11A. Anti-rotation boss; 21. Second mating part; B. Unlocking side slope; B1. Unlocking channel; C. Mating guide wall; C1. Mating jump slope; D. Switching boss; D1. Switching slope; K. Anti-detachment narrow opening; K1. Anti-detachment strong detachment slope; Q. Reinforced protective boss; H. Magnetic suction part; Z. Conversion part. Detailed Implementation

[0033] The present invention will now be further described with reference to the accompanying drawings. Example

[0034] like Figures 1 to 2 As shown, a quick-release structure for a pen accessory is provided for detachably connecting the pen body and the tail accessory (A). The pen body and / or the tail accessory have a complete lead extension / retraction mechanism, and a return spring is provided inside the pen body. The elastic force of the return spring acts directly or indirectly on the tail accessory (A), causing the tail accessory (A) to have a continuous tendency to move away from the pen body.

[0035] The quick-release structure includes a locking mechanism, a rotation unlocking assembly, and an anti-rotation boss (11A). The locking mechanism and the rotation unlocking assembly are respectively disposed on the pen body or the tail accessory (A).

[0036] The locking mechanism is used to keep the pen body and the tail accessory (A) relatively fixed, and includes a first mating part (11) and a second mating part (21) that cooperate with each other. In this embodiment, the first mating part (11) is a mating boss with elasticity and is provided on the pen body; the second mating part (21) is a locking boss that can engage with the first mating part (11) and is provided on the tail accessory (A). The first mating part (11) and / or the second mating part (21) are provided with a mating ramp (C1) to make the engagement process smoother.

[0037] The rotary unlocking assembly includes an unlocking ramp (B) and / or an unlocking channel (B1). The unlocking ramp (B) is located on the second mating part (21) and / or the first mating part (11), and the unlocking channel (B1) is located next to the first mating part (11).

[0038] The anti-rotation boss (11A) is correspondingly disposed on the component where the locking mechanism is located, and is configured to: restrict the rotation of the second mating part (21) in the non-pressed state; when the tail accessory (A) is pressed toward the pen body, the second mating part (21) moves axially to disengage from the rotation restriction range of the anti-rotation boss (11A), thereby allowing rotational unlocking. After unlocking, the tail accessory (A) is pushed out by the elastic force of the return spring to achieve separation.

[0039] The locking mechanism, the rotating unlocking component, and the pen body's press-to-extract mechanism are independent of each other, so that the disassembly and assembly of the tail accessories do not affect the extension or retraction of the pen refill.

[0040] During installation, the tail accessory (A) is vertically inserted into the tail of the pen body. With the assistance of the mating ramp (C1), the engaging boss of the second mating part (21) forces the elastic first mating part (11) to deform until the engaging boss jumps over the mating boss. The first mating part (11) then returns to its original shape, and the two engage with each other to complete the installation.

[0041] To unlock, first press the tail accessory (A) towards the pen body to compress the return spring. The second mating part (21) then moves axially, disengaging from the rotation restriction range of the anti-rotation boss (11A). Next, rotate the tail accessory (A), and the second mating part (21) slides along the unlocking side slope (B), gradually releasing its engagement with the first mating part (11). Finally, release the tail accessory (A), and under the elastic force of the return spring, the tail accessory (A) is pushed out to achieve separation.

[0042] The tail accessory (A) is at least one of an eraser, stylus, laser pointer, light, stamp, pen clip, and extension grip. Example

[0043] like Figure 3 As shown, a quick-release structure for a pen accessory is provided for detachably connecting the pen body and the tail accessory (A). The pen body and / or the tail accessory have a complete lead extension / retraction mechanism, and a return spring is provided inside the pen body. The elastic force of the return spring acts directly or indirectly on the tail accessory (A), causing the tail accessory (A) to have a continuous tendency to move away from the pen body.

[0044] The quick-release structure includes a locking mechanism, a rotation unlocking assembly, and an anti-rotation boss (11A). The locking mechanism and the rotation unlocking assembly are respectively disposed on the pen body or the tail accessory (A).

[0045] The locking mechanism is used to keep the pen body and the tail accessory (A) relatively fixed, and includes a first mating part (11) and a second mating part (21) that cooperate with each other. In this embodiment, the first mating part (11) is a mating boss provided on the pen body; the second mating part (21) is an elastic claw that can engage with the first mating part (11) and is provided on the tail accessory (A). The component where the first mating part (11) is located is also provided with a mating guide wall (C) to assist in guiding during assembly. The first mating part (11) and / or the second mating part (21) are provided with a mating ramp (C1) to make the engagement process smoother.

[0046] The rotary unlocking assembly includes an unlocking ramp (B) and / or an unlocking channel (B1). The unlocking ramp (B) is located on the second mating part (21) and / or the first mating part (11), and the unlocking channel (B1) is located next to the first mating part (11).

[0047] The anti-rotation boss (11A) is correspondingly disposed on the component where the locking mechanism is located, and is configured to: restrict the rotation of the second mating part (21) in the non-pressed state; when the tail accessory (A) is pressed toward the pen body, the second mating part (21) moves axially to disengage from the rotation restriction range of the anti-rotation boss (11A), thereby allowing rotational unlocking. After unlocking, the tail accessory (A) is pushed out by the elastic force of the return spring to achieve separation.

[0048] The first mating part (11) is further provided with a reinforced protective boss (Q) at its upper or lower end, and an anti-detachment narrow opening (K) is formed between the reinforced protective boss (Q) and the anti-rotation boss (11A). The outer diameter of the second mating part (21) is larger than the inner diameter of the anti-detachment narrow opening (K). In the locked state, the second mating part (21) is restricted within the anti-detachment narrow opening (K) and cannot be directly axially disengaged.

[0049] The anti-detachment narrow opening (K) is also provided with an anti-detachment strong detachment slope (K1), which is used to guide the second mating part (21) to deform and cross the anti-detachment narrow opening (K) when subjected to a separation force exceeding a set threshold, thereby achieving forced separation.

[0050] The locking mechanism, the rotating unlocking component, and the pen body's press-to-extract mechanism are independent of each other, so that the disassembly and assembly of the tail accessories do not affect the extension or retraction of the pen refill.

[0051] During installation, the tail accessory (A) is vertically inserted into the tail of the pen body, with the guide wall (C) assisting in the assembly guidance. The elastic claw of the second mating part (21), aided by the mating ramp (C1), springs outward and over the mating boss of the first mating part (11), then returns to its original shape and engages with the first mating part (11). Simultaneously, the second mating part (21) enters the limiting area of ​​the anti-rotation boss (11A) and the anti-disengagement narrow opening (K), completing the installation.

[0052] To unlock, first press the tail accessory (A) towards the pen body to compress the return spring. The second mating part (21) then moves axially, disengaging from the rotation restriction range of the anti-rotation boss (11A). Next, rotate the tail accessory (A), and the second mating part (21) slides along the unlocking side slope (B), gradually releasing its engagement with the first mating part (11). Finally, release the tail accessory (A), and under the elastic force of the return spring, the tail accessory (A) is pushed out to achieve separation.

[0053] When the tail accessory (A) is subjected to an axial tensile force exceeding the set threshold, the anti-detachment strong slope (K1) guides the second mating part (21) to deform and cross the anti-detachment narrow opening (K) to achieve forced separation, ensuring that disassembly can be completed even in an emergency.

[0054] The tail accessory (A) is at least one of an eraser, stylus, laser pointer, light, stamp, pen clip, and extension grip. Example

[0055] like Figures 4 to 5 As shown, a quick-release structure for a pen accessory is provided for detachably connecting the pen body and the tail accessory (A). The pen body and / or the tail accessory have a complete lead extension / retraction mechanism, and a return spring is provided inside the pen body. The elastic force of the return spring acts directly or indirectly on the tail accessory (A), causing the tail accessory (A) to have a continuous tendency to move away from the pen body.

[0056] This embodiment includes a conversion element (Z) for connecting the pen body and the tail accessory (A). The conversion element (Z) is detachably mounted to the tail of the pen body via a first quick-release structure; the tail accessory (A) is detachably mounted to the tail of the conversion element (Z) via a second quick-release structure.

[0057] The quick-release structure includes a locking mechanism, a rotation unlocking assembly, and an anti-rotation boss (11A). The locking mechanism and the rotation unlocking assembly are respectively disposed on the pen body or the tail accessory (A).

[0058] The locking mechanism is used to keep the pen body and the tail accessory (A) relatively fixed, and includes a first mating part (11) and a second mating part (21) that cooperate with each other. The second mating part (21) is disposed on the tail end of the pen body and the conversion part (Z), and the first mating part (11) is disposed on the front end of the tail accessory (A) and the conversion part (Z). In this embodiment, the first mating part (11) is a mating groove, and the second mating part (21) is an elastic claw that can engage with the first mating part (11). The component where the first mating part (11) is located is also provided with a mating guide wall (C) to assist in guiding during assembly. The first mating part (11) and / or the second mating part (21) are provided with a mating ramp (C1) to make the engagement process smoother.

[0059] The rotary unlocking assembly includes an unlocking ramp (B) and / or an unlocking channel (B1). The unlocking ramp (B) is located on the second mating part (21) and / or the first mating part (11), and the unlocking channel (B1) is located next to the first mating part (11).

[0060] The anti-rotation boss (11A) is correspondingly disposed on the component where the locking mechanism is located, and is configured to: restrict the rotation of the second mating part (21) in the non-pressed state; when the tail accessory (A) is pressed toward the pen body, the second mating part (21) moves axially to disengage from the rotation restriction range of the anti-rotation boss (11A), thereby allowing rotational unlocking. After unlocking, the tail accessory (A) is pushed out by the elastic force of the return spring to achieve separation.

[0061] This embodiment also includes a magnetic locking mechanism, which includes magnetic parts (H) respectively disposed on the pen body and the tail accessory (A), and achieves docking assistance and axial retention through magnetic force.

[0062] The locking mechanism, the rotating unlocking component, and the pen body's press-to-extract mechanism are independent of each other, so that the disassembly and assembly of the tail accessories do not affect the extension or retraction of the pen refill.

[0063] During installation, for the connection between the pen body and the adapter (Z): align the front end of the adapter (Z) with the tail end of the pen body, and insert it vertically with the assistance of the guide wall (C). The elastic claw of the second mating part (21), aided by the mating ramp (C1), springs outward and engages in the mating groove of the first mating part (11), then returns to its original shape and engages with the first mating part (11). Simultaneously, the second mating part (21) enters the limiting area of ​​the anti-rotation boss (11A), completing the locking of the adapter (Z) and the pen body.

[0064] For the installation between the adapter (Z) and the tail accessory (A): Align the front end of the tail accessory (A) with the tail end of the adapter (Z), and insert it vertically with the assistance of the guide wall (C). The elastic claw of the second mating part (21), with the assistance of the mating ramp (C1), springs outward and engages in the mating groove of the first mating part (11), and after restoring its deformation, it engages with the first mating part (11). At the same time, the second mating part (21) enters the limiting area of ​​the anti-rotation boss (11A), completing the locking of the tail accessory (A) and the adapter (Z). The magnetic suction part (H) achieves automatic adsorption and alignment through magnetic force during installation, assisting in installation and enhancing axial holding force.

[0065] During unlocking, the disassembly between the tail accessory (A) and the adapter (Z) is performed as follows: First, press the tail accessory (A) towards the adapter (Z) to compress the return spring. The second mating part (21) then moves axially, disengaging from the rotation restriction range of the anti-rotation boss (11A). Next, rotate the tail accessory (A), and the second mating part (21) slides along the unlocking side slope (B), gradually releasing its engagement with the first mating part (11). Finally, release the tail accessory (A), and under the elastic force of the return spring, the tail accessory (A) is pushed out to achieve separation.

[0066] For disassembling the adapter (Z) from the pen body: First, press the adapter (Z) towards the pen body to compress the return spring. The second mating part (21) then moves axially, disengaging from the rotation restriction range of the anti-rotation boss (11A). Next, rotate the adapter (Z). The second mating part (21) slides along the unlocking ramp (B), gradually releasing its engagement with the first mating part (11). Finally, release the adapter (Z). Under the elastic force of the return spring, the adapter (Z) is pushed out to achieve separation.

[0067] By introducing the adapter (Z), this invention achieves modular, two-tiered expansion functionality. Users can permanently install the adapter (Z) on the pen body and then quickly replace it with different end accessories (A) as needed. Since the adapter (Z) itself is also detachable, users can also replace it with different types, further expanding the flexibility of functional combinations.

[0068] The tail accessory (A) is at least one of an eraser, stylus, laser pointer, light, stamp, pen clip, and extension grip.

[0069] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural modifications made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A quick-release structure for a pen accessory, used to detachably connect a pen body and a tail accessory (A), wherein the pen body and / or the tail accessory has a complete lead extension / retraction mechanism, and a return spring is internally housed within the pen body, the elastic force of which acts directly or indirectly on the tail accessory (A), causing the tail accessory (A) to have a continuous tendency to move away from the pen body, characterized in that: Includes a locking mechanism, a rotary unlocking assembly, and an anti-rotation boss (11A); The locking mechanism and the rotary unlocking assembly are respectively disposed on the pen body or the tail accessory (A); The locking mechanism is used to keep the pen body and the tail accessory (A) relatively fixed, including a first mating part (11) and a second mating part (21) that cooperate with each other. One of the first mating part (11) and the second mating part (21) is disposed on the pen body, and the other is disposed on the tail accessory (A). The rotary unlocking assembly includes an unlocking side ramp (B) and / or an unlocking channel (B1); The anti-rotation boss (11A) is correspondingly disposed on the component where the locking mechanism is located, and is configured to: restrict the rotation of the second mating part (21) in the non-pressed state; when the tail accessory (A) is pressed toward the pen body, the second mating part (21) moves axially to disengage from the rotation restriction range of the anti-rotation boss (11A), thereby allowing rotation to unlock; After unlocking, the tail accessory (A) is pushed out by the elastic force of the return spring to achieve separation.

2. The quick-release structure for pen accessories according to claim 1, characterized in that: The mounting and fitting methods of the tail accessory and the pen body are at least divided into the following two types:

1. The first mating part (11) is a mating boss or a mating groove, and the second mating part (21) is an elastic claw that can engage with the first mating part (11); 2. The first mating part (11) is a mating boss or mating groove with elasticity, and the second mating part (21) is a locking boss that can engage with the first mating part (11).

3. The quick-release structure for pen accessories according to claim 2, characterized in that: The component where the first mating part (11) is located is also provided with a mating guide wall (C) to assist in guiding during assembly; the first mating part (11) and / or the second mating part (21) are provided with a mating ramp (C1).

4. The quick-release structure for pen accessories according to claim 2, characterized in that: The locking mechanism, the rotating unlocking component, and the pen body's press-to-extract mechanism are independent of each other, so that the disassembly and assembly of the tail accessories do not affect the extension or retraction of the pen refill.

5. The quick-release structure for pen accessories according to claim 2, characterized in that: It also includes a magnetic locking mechanism; the magnetic locking mechanism includes magnetic parts (H) respectively disposed on the pen body and the tail accessory (A), which realize docking assistance and axial retention through magnetic force.

6. The quick-release structure for pen accessories according to claim 2, characterized in that: The upper or lower end of the first mating part (11) is also provided with a reinforced protective boss (Q); a narrow anti-detachment opening (K) is formed between the reinforced protective boss (Q) and the anti-rotation boss (11A); the outer diameter of the second mating part (21) is larger than the inner diameter of the narrow anti-detachment opening (K).

7. The quick-release structure for pen accessories according to claim 6, characterized in that: The anti-detachment narrow opening (K) is also provided with an anti-detachment strong detachment slope (K1), which is used to guide the second mating part (21) to deform and cross the anti-detachment narrow opening (K) when subjected to a separation force exceeding a set threshold, thereby achieving forced separation.

8. The quick-release structure for pen accessories according to claim 2, characterized in that: The unlocking ramp (B) is located on the second mating part (21) and / or the first mating part (11); the unlocking channel (B1) is located next to the first mating part (11).

9. A quick-release structure for pen accessories according to claim 2, characterized in that: The tail accessory (A) is at least one of an eraser, stylus, laser pointer, light, stamp, pen clip, and extension grip.

10. A quick-release structure for pen accessories, characterized in that: It also includes a converter (Z) for connecting the pen body to the tail accessory (A): The conversion component (Z) is detachably mounted to the tail of the pen body via a first quick-release structure; The tail accessory (A) is detachably mounted to the tail of the adapter (Z) via a second quick-release structure; Wherein, the first quick-release structure and / or the second quick-release structure are accessory quick-release structures as described in any one of claims 1 to 9.

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