Writing pen structure capable of discharging refill by side pressing

Abstract

The writing pen structure comprises a pen shell, a refill and a refill pushing assembly located in the pen shell, a pressing cap of the refill pushing assembly is located at an opening in the side face of the pen shell, and when the pressing cap is pressed, the refill pushing assembly pushes the refill to stretch out relative to a pen point and compresses a refill returning spring located in the pen shell. The refill return spring is used for pushing the refill to retract into the pen shell; according to the writing pen structure, the structure is further improved on the basis of the design concept of a telescopic pen in the prior art, when the writing pen structure is used for writing, the core can be pulled out through gripping force, the core pulling state is kept under the necessary gripping force during writing, the acting force between the pressure of the core returning spring and the button is small, and therefore the writing pen structure is convenient to use. When the pen is used, the refill can be kept out through slight gripping force, a user does not feel tired in the long-time writing process, the refill can be quickly and automatically returned and stored based on the elastic force of the spring at the moment when the pen is not used or slips out of the hand, use is convenient, and the refill can be better protected.

Description

Technical Field

[0001] This utility model relates to the field of stationery technology, specifically to a writing pen structure with a side-press lead ejection mechanism. Background Technology

[0002] Existing retractable writing pens typically consist of a pen shell, a pen refill, a clip, a telescopic locking mechanism, and a press cap. The telescopic locking mechanism generally consists of a locking element, a pressure rod, a guide rail, and a guide rail located inside the pen shell. By pressing the press cap at the rear of the pen, the front end of the pen refill can be driven to extend or retract outward from the pen shell, thereby achieving the switching between writing and storage states.

[0003] These retractable pens are quite common. Although they ensure the retraction function and prevent wear and tear on the tip, they require pressing to extend the lead during use and pressing to retract it after use. Users sometimes forget to retract the lead, especially when they need to retract it quickly. In addition, when writing, if the user gets tired and shakes their wrist, the pen may fly out, and the sharp tip could easily prick a classmate. Utility Model Content

[0004] The purpose of this invention is to provide a writing pen structure with a side-press lead-out mechanism, which allows the lead to be gripped during use and automatically retracts when released or not in use, making it convenient to use.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a writing pen structure with side-press lead extension, including a pen shell, a pen lead, and a lead-pushing assembly located inside the pen shell. The pressing cap of the lead-pushing assembly is located on the pen tip side or the user's writing grip area at the relative center of the pen shell. When the pressing cap is pressed, the lead-pushing assembly pushes the pen lead to extend relative to the pen tip and compresses the return spring located inside the pen shell. The return spring is used to push the pen lead back into the pen shell.

[0006] As a further feature of the above solution, the pen case includes a pen barrel and a pen tip that is threadedly connected to and fixed to the pen barrel. The pen tip has an opening at its front end and an inner cavity with a spring platform for a return spring.

[0007] As a further feature of the above solution, the press cap is provided with a limiting ring edge, and the pen shell is provided with a radial groove. The radial groove matches the press cap, and the limiting ring edge is used to restrict the press cap from coming out of the radial groove.

[0008] As a further provision of the above solution, the push core assembly includes a telescopic core with a driving slope, the pen refill is fixed in the inner cavity of the telescopic core, the pressing cap radially abuts against the telescopic core, and has a sloping driving surface relative to the driving slope.

[0009] Through the structure setting, the pressing cap and the telescopic core of the embodiment can be slightly deformed and installed based on the elastic characteristics of the material of the pressing cap, such as low-hardness nylon material, and form a bevel abutting state after being pressed in, and the deformed pressing cap with a little elasticity does not affect use and does not cause disengagement problem, and the material of the pressing cap is also more comfortable.

[0010] As a further arrangement of the above-mentioned scheme, the telescopic core is further provided with an axial sliding groove part, and the inner cavity of the pen shell is provided with an axial sliding block part corresponding to the axial sliding groove part.

[0011] As a further arrangement of the above-mentioned scheme, the outer side of the pressing cap is provided with an arc face matching the diameter of the outer circle of the pen barrel.

[0012] Beneficial effects: the writing pen structure of the utility model further improves the structure on the basis of the design concept of the prior art telescopic pen, so that the core can be taken out by gripping force during writing, and the core can be kept in the taken-out state under the necessary gripping force during writing, the pressure of the core return spring and the acting force between the buttons are small, the core can be kept in the taken-out state by slight gripping force, and the user will not feel tired during long-time writing, and the core can be quickly and automatically taken back and stored based on the spring elasticity in the instant of non-use or hand release, that is, the utility model is convenient to use and can better protect the core. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a writing pen core telescopic state structure schematic view of the utility model.

[0014] Figure 2 It is a writing pen assembly schematic view of the embodiment.

[0015] Figure 3 It is a writing pen cross section structure schematic view of the embodiment.

[0016] Figure 4 It is a pen barrel schematic view of the embodiment.

[0017] Figure 5 It is a core pushing assembly schematic view of the embodiment.

[0018] The drawing label: 1, pen shell; 11, pen barrel; 12, pen head; 13, opening; 14, spring table; 2, core; 3, core pushing assembly; 30, inclined driving face; 31, pressing cap; 32, core return spring; 33, telescopic core; 34, driving bevel; 35, axial sliding groove part; 36, axial sliding block part; 37, arc face; 38, radial groove; 39, limit ring edge. DETAILED DESCRIPTION

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other.

[0020] like Figures 1-5 The illustrated writing pen structure includes a pen shell 1, a pen refill 2, and a refill pusher assembly 3 located inside the pen shell 1. The pusher assembly 3 has a pressing cap 31 located on the pen shell 1 near the pen tip or at the user's writing grip. When the pressing cap 31 is pressed, the pusher assembly 3 pushes the pen refill 2 out relative to the pen tip and compresses a return spring 32 located inside the pen shell 1. The return spring 32 is used to push the pen refill 2 back into the pen shell 1.

[0021] As a further provision of the above solution, the pen casing 1 includes a pen barrel 11 and a pen tip 12 that is threadedly connected to and fixed to the pen barrel 11. The pen tip 12 has an opening 13 at its front end and an inner cavity provided with a spring platform 14 for the return spring 32. Figure 4 As shown, in this embodiment, one end of the return spring 32 abuts against the spring platform 14 of the pen tip 12, and the other end abuts against a step on the pen refill 2. At the same time, the end of the pen refill 2 abuts against the bottom of the inner cavity of the telescopic core 33. Thus, the elastic force of the return spring 32 will directly act on the telescopic core 33. That is, while the return spring 32 drives the pen refill 2 to retract the pen barrel 11, it will simultaneously drive the telescopic core 33 to move axially.

[0022] As a further feature of the above solution, the pressing cap 31 is provided with a limiting ring edge 39, and the pen shell 1 is provided with a radial groove 38. The radial groove 38 matches the pressing cap 31, and the limiting ring edge 39 is used to restrict the pressing cap 31 from coming out of the radial groove 38.

[0023] As a further provision of the above scheme, the push core assembly 3 includes a telescopic core 33 with a driving inclined surface 34, the pen refill 2 is fixed in the inner cavity of the telescopic core 33, the pressing cap 31 radially abuts against the telescopic core 33, and has an inclined driving surface 30 relative to the driving inclined surface 34.

[0024] As a further provision of the above scheme, the telescopic core 33 is provided with an axial sliding groove 35 on its outer side, and the inner cavity of the pen shell 1 is provided with an axial slider 36 corresponding to the axial sliding groove 35. The purpose of providing the axial slider 36 and the axial sliding groove 35 is to keep the circumferential movement of the inclined surface fit and avoid instability of the inclined surface fit.

[0025] As a further feature of the above solution, the outer side of the pressing cap 31 is provided with an arc surface 37 that matches the outer diameter of the pen barrel 11. Providing an arc surface 37 that matches the outer diameter of the pen barrel 11 makes the writing pen of this embodiment more comfortable to use.

[0026] Reference Figures 1-2 The writing pen structure of the present embodiment is shown, when in use, the user holds the pen barrel 11 of the pen shell 1 at a position close to the pen tip 12, and the position is just at the pressing cap 31 of the push core assembly 3, so that when holding the pen, the pressing cap 31 is also pressed into the radial slot 38 at the same time, as shown in the figure. Figure 4 And Figure 5 As shown, the pressing cap 31 is in a bevel cooperation with the telescopic core 33 arranged in the pen barrel 11, after the pressing cap 31 is pressed in, the radial pressure is converted into axial thrust by the bevel, and the telescopic core 33 and the pen core 2 abutting at the bottom of the inner cavity of the telescopic core 33 are pushed out of the pen tip 12 together, the writing part of the front end of the pen core 2 is stretched out from the opening 13 of the pen tip 12, and the user also holds the pen barrel 11 to keep the pressing cap 31 pressed in during the writing process, so that the pen core 2 is also kept continuously stretched out.

[0027] Further, when the writing is completed, the user releases the holding of the writing pen, and the radial pressing of the pressing cap 31 is released, at this time, the back core spring 32 compressed and deformed while the pen core 2 is stretched out, restores the deformation after the axial pressure is removed, and pushes the pen core 2 abutting at the end to the inside of the pen barrel 11 to move axially, the pen core 2 is successfully stored in the pen barrel 11 of the pen shell 1, and based on the bevel cooperation driving, the pressing cap 31 is pushed by the telescopic core 33 to move radially and exposed outside the radial slot 38 of the pen barrel 11.

[0028] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the present application and equivalent technology, the present application also intends to include these modifications and variations.

Claims

1. A structure of a side-pressing core-extruding writing pen, comprising a pen shell (1), a pen core (2) and a core pushing assembly (3) located in the pen shell (1), characterized in that: The pressing cap (31) of the push core assembly (3) is arranged at the relative middle part of the pen shell (1) near the pen tip side or the user's writing grip, the push core assembly (3) pushes the refill (2) to extend relative to the pen tip when the pressing cap (31) is pressed, and the return spring (32) arranged in the pen shell (1) is compressed, the return spring (32) is used to push the refill (2) to retract into the pen shell (1).

2. A side-pressing core-extruding ballpoint pen structure according to claim 1, wherein: The pen shell (1) comprises a pen barrel (11) and a pen head (12) threadedly connected with the pen barrel (11), the pen head (12) is provided with a hole (13) at the front end, and the inner cavity is provided with a spring table (14) for the return spring (32).

3. A side core-ejecting writing instrument according to claim 1, wherein: The pressing cap (31) is provided with a limiting ring edge (39), the pen shell (1) is provided with a radial slot (38), the radial slot (38) is matched with the pressing cap (31), and the limiting ring edge (39) is used to limit the pressing cap (31) from being taken out of the radial slot (38).

4. The side-pressing core-extruding ballpoint pen structure according to claim 1, wherein: The push core assembly (3) comprises a telescopic core (33) with a driving slope (34), the refill (2) is fixed in the inner cavity of the telescopic core (33), the pressing cap (31) radially abuts against the telescopic core (33), and the relative driving slope (34) is provided with a slope driving surface (30).

5. A side-pressing core-ejecting ballpoint pen structure according to claim 4, wherein: The telescopic core (33) is further provided with an axial sliding groove part (35) on the outer side, and the inner cavity of the pen shell (1) is provided with an axial sliding block part (36) corresponding to the axial sliding groove part (35).

6. A side-pressing core-extruding ballpoint pen structure according to claim 2, wherein: The outer side surface of the pressing cap (31) is provided with an arc surface (37) matched with the diameter of the outer circle of the pen barrel (11).

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