A core-discharging mechanism suitable for automatic pen cores of various specifications

Abstract

This invention provides a lead ejection mechanism suitable for various sizes of automatic pen refills. The mechanism includes: a first fixing member with a micro-adjustment nut disposed inside the micro-adjustment nut; and a micro-adjustment embedded in the micro-adjustment nut. The first fixing member forms a first elastic member surrounding the outer side of the end of the outer shell, and the first elastic member is in contact with the outer shell and applies a radially inward force to the outer side of the end of the outer shell to clamp the end of the outer shell. The micro-adjustment extends downward to form a micro-adjustment ring that only abuts against the lead tube. An external thread is formed on the outer side of the micro-adjustment, and an internal thread is formed on the inner side of the pen barrel that matches the external thread of the micro-adjustment. By driving the pen barrel to move longitudinally relative to the pen grip, the micro-adjustment ring drives the lead tube to move longitudinally within the outer shell. This invention enables the active ejection of automatic pen refills of various sizes.

Description

Technical Field

[0001] This invention relates to the field of cultural products technology, and in particular to a refill mechanism suitable for automatic pen refills of various specifications. Background Technology

[0002] Existing multi-function pens use mechanical pencils with a limited range of lead thicknesses, lengths, and the number of leads that can be inserted is extremely small. Since there's no lead insertion slot at the top, the lead must be inserted through the lead sleeve. Because multi-function pens have limited size and numerous internal mechanical structures, and ballpoint pen leads are also thin and short with very little ink, they also present certain limitations. Furthermore, the lead advance button on multi-function pens, mechanical pencils, or double-tap mechanical pencils is often located at the top, making it easy to accidentally press the button when the pen is in a pocket.

[0003] In view of this, it is necessary to improve the lead ejection mechanism in existing multi-functional pens to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of existing multi-functional pens and automatic pencils, such as small lead capacity, limited applicable lead thickness, inability to directly install complete mechanical pencil internals or thin-barreled mechanical pencils inside the multi-functional pen shell, inability of the lead protector to retract or retract insufficiently, resulting in lead or lead protector staining clothes, and the tendency for mechanical pencils and multi-functional pens to accidentally eject leads when squeezed or bumped.

[0005] To achieve the above objectives, the present invention provides a lead-out mechanism suitable for multi-specification automatic pen refills. The automatic pen refill includes a lead tube with a built-in lead core, a shell sleeved on the outside of the lead tube, a pen tip sleeved on the outside of the top of the lead tube, and a lead-out protector tube disposed on the top of the pen tip. The lead-out mechanism is disposed inside the multi-purpose pen housing and sleeved on the outside of the end of the shell. The multi-purpose pen housing includes a pen barrel and a pen grip arranged longitudinally from top to bottom.

[0006] The core extraction mechanism includes:

[0007] The micro-motion lifting nut, the first fixing member disposed inside the micro-motion lifting nut, and the micro-motion component embedded in the micro-motion lifting nut;

[0008] The first fixing member forms a first elastic member that surrounds the outer side of the end of the outer shell, and the first elastic member is in contact with the outer shell and applies a radially inward force to the outer side of the end of the outer shell to clamp the end of the outer shell. The micro-movement member protrudes downward to form a micro-movement ring that only abuts against the lead core tube. The outer side of the micro-movement member forms a micro-movement external thread, and the inner side of the pen barrel forms a pen barrel internal thread that matches the micro-movement external thread.

[0009] By driving the pen barrel to move longitudinally relative to the pen grip, the micro-moving ring drives the lead core tube to move longitudinally within the outer casing.

[0010] As a further improvement of the present invention, the core-exiting mechanism further includes: a micro-motion lifting hollow screw partially embedded inside the micro-motion lifting nut, the top end of the micro-motion lifting hollow screw abutting against the first fixing member, and the bottom of the micro-motion lifting hollow screw forming a rotating handle.

[0011] As a further improvement of the present invention, an internal thread of the micro-motion lifting component nut is formed on the inner side of the micro-motion lifting component nut, and an external thread of the micro-motion lifting component hollow screw that is adapted to the internal thread of the micro-motion lifting component nut is formed on the outer side of the micro-motion lifting component hollow screw.

[0012] As a further improvement of the present invention, at least two notches are provided on the side of the nut of the micro-motion lifting component, and a micro-motion slider is formed on the side of the micro-motion component that fits into the notch and moves longitudinally along the notch, and the external thread of the micro-motion component is formed on the outside of the micro-motion slider.

[0013] As a further improvement of the present invention, the micro-motion component includes: a connector disposed at the top of the first fixing component, a micro-motion component slider formed on the side of the connector, and a micro-motion ring formed at the center of the connector on the side facing the first fixing component.

[0014] As a further improvement of the present invention, the core-exiting mechanism further includes: a micro-motion lifting nut cap disposed at the top of the micro-motion lifting nut, and a gap is formed between the micro-motion lifting nut cap and the first fixing member to allow the connecting member to move longitudinally.

[0015] As a further improvement of the present invention, a central through hole is formed at the center of the connector, the micro-movement ring is arranged around the circular through hole, a first cap hole is opened at the center of the nut cap of the micro-movement lifting component, and a second cap hole is opened around the first cap hole. The first cap hole and the second cap hole are tangent, and the diameter of the first cap hole is different from the diameter of the second cap hole so that lead cores of different thicknesses can pass through and be assembled into the lead core tube.

[0016] As a further improvement of the present invention, the core-exiting mechanism further includes: a rotating cover disposed at the top of the nut cap of the micro-motion lifting component and partially embedded inside the nut cap of the micro-motion lifting component, and a rubber ring disposed between the rotating cover and the nut cap of the micro-motion lifting component;

[0017] The rotating cover has a first rubber ring groove on one side that fits into the nut cap of the micro-adjustment lifting component, which is used to accommodate the rubber ring portion; the micro-adjustment lifting component nut cap has a second rubber ring groove on one side that fits into the rotating cover, which is used to accommodate the rubber ring portion.

[0018] The top of the rotating cover is provided with four intersecting rotating cover handles, and the top of the micro-motion lifting component nut cap is provided with four handles at equal distances corresponding to the longitudinal direction of the rotating cover handles.

[0019] As a further improvement of the present invention, the rotating cover and the nut cap of the micro-motion lifting component are coaxially arranged, and the rotating cover has five cover holes for lead core tubes of different diameters to pass through.

[0020] The cover holes include: a first cover hole located at the center of the rotating cover and intersecting with the rotating cover handle; and a second, third, fourth, and fifth cover holes located around the first cover hole and intersecting with the rotating cover handle.

[0021] The diameter of the first cover hole is less than the diameter of the second cover hole, which is less than the diameter of the third cover hole, which is less than the diameter of the fourth cover hole, which is less than the diameter of the fifth cover hole; the diameter of the first cap hole is less than the diameter of the second cap hole; the diameter of the first cap hole is 0.1mm-0.5mm larger than the diameter of the first cover hole; the diameter of the second cap hole is 0.1mm-0.5mm larger than the diameter of the fifth cover hole; and the diameter of the cover hole is 0.1mm-0.5mm larger than the diameter of the corresponding lead core.

[0022] The drive rotating cover rotates around the central axis of the micro-motion lifting component nut cap, so that the second cap hole is longitudinally aligned with the second cover hole, the third cover hole, the fourth cover hole and the fifth cover hole respectively, so that lead cores of different thicknesses can be continuously passed through.

[0023] As a further improvement of the present invention, the first fixing member includes: a first upper fixing ring and a first lower fixing ring coaxially arranged, and the first elastic member is disposed between the first upper fixing ring and the first lower fixing ring;

[0024] The first elastic element includes at least three pairs of clips symmetrically arranged along the central axis of the upper fixed ring or the lower fixed ring. The top ends of the two pairs of clips are inclined towards each other and abut against each other, and their ends are movably connected to the upper fixed ring and the lower fixed ring respectively to adjust the tilt angle.

[0025] As a further improvement of the present invention, a first upper positioning part and a first lower positioning part are respectively protruded from the outer side of the first upper fixing ring and the outer side of the second lower fixing ring, and a first upper positioning groove and a first lower positioning groove are formed on the inner side of the micro-motion lifting nut for accommodating the first upper positioning part and the first lower positioning part.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The first fixing member clamps the outer side of the outer shell end, and the micro-moving ring formed by the downward protrusion of the micro-moving member applies a longitudinal downward force to the lead tube, thereby pushing the lead tube to move longitudinally downward and realizing the ejection of the automatic pen lead. After the longitudinal downward force applied to the lead tube is stopped, the micro-moving ring returns to its original position, and the lead ejection mechanism is assembled inside the multi-purpose pen. Thus, the existing multi-purpose pen has problems such as the use of a single lead size, easy accidental lead ejection, and insufficient retraction of the pen barrel when assembling the automatic pen lead. Attached Figure Description

[0028] Figure 1 This is a cross-sectional view of the housing shown in this invention;

[0029] Figure 2 This is a cross-sectional view of the multi-purpose pen shown in this invention;

[0030] Figure 3 A cross-sectional view of the pen cap, the retaining cup, and the pen grip;

[0031] Figure 4 This is a cross-sectional view of the pen barrel and cap.

[0032] Figure 5 A top view of the pen grip;

[0033] Figure 6 A cross-sectional view of the hoop bowl from one perspective;

[0034] Figure 7 A cross-sectional view of the positioning component, part of the pen grip, and part of the pen barrel;

[0035] Figure 8 This is a sectional view of the positioning component;

[0036] Figure 9 Cross-sectional view of the limiting component

[0037] Figure 10 This is a bottom view of the limiting nut;

[0038] Figure 11 This is a top view of the hollow screw, which is a limiting component;

[0039] Figure 12 A bottom view of the hollow screw, which is a limiting component;

[0040] Figure 13 This is a cross-sectional view of the lifting component in one embodiment;

[0041] Figure 14 This is a cross-sectional view of the lifting nut, the lifting nut cap, and the rotating cover in one embodiment;

[0042] Figure 15 This is a top view of the lifting nut in one embodiment;

[0043] Figure 16 This is a bottom view of the lifting nut in one embodiment;

[0044] Figure 17 This is a cross-sectional view of the first fastener in one embodiment;

[0045] Figure 18 This is a top view of the first fastener in one embodiment;

[0046] Figure 19 A cross-sectional view of the first fastener in another embodiment;

[0047] Figure 20 A top view of the first fastener in another embodiment;

[0048] Figure 21 This is a bottom view of the penholder;

[0049] Figure 22 A bottom view of the core extraction mechanism in another embodiment;

[0050] Figure 23 This is a bottom view of the micro-motion component in another embodiment;

[0051] Figure 24 A bottom view of the micro-adjustment lifting nut in another embodiment;

[0052] Figure 25 A cross-sectional view of the core extraction mechanism in another embodiment;

[0053] Figure 26 This is a partial cross-sectional view of the core extraction mechanism in another embodiment;

[0054] Figure 27 A cross-sectional view of the micro-lifting nut, the micro-lifting nut cap, and the rotating cover in another embodiment;

[0055] Figure 28 This is a top view of the micro-adjustment lifting nut in another embodiment;

[0056] Figure 29 This is a cross-sectional view of the lifting component in an assembled state according to one embodiment;

[0057] Figure 30 This is a sectional view of the limiting component in its assembled state.

[0058] Figure 31 A cross-sectional view of a multi-purpose pen with a thick-barreled ballpoint pen refill;

[0059] Figure 32 Cross-sectional view of a push-type gel pen refill assembled in a multi-purpose pen;

[0060] Figure 33 Cross-sectional view of the end of a mechanical pencil core of a multi-functional pen;

[0061] Figure 34 Cross-sectional view of a mechanical pencil of a multi-functional pen assembled in a multi-purpose pen;

[0062] Figure 35 Cross-sectional view of a mechanical pencil with the outer shell and the lead core tube cap removed, assembled in a multi-purpose pen;

[0063] Figure 36 Cross-sectional view of a mechanical pencil with the outer shell cut short and the lead core tube cap removed, assembled in a multi-purpose pen;

[0064] Figure 37 Cross-sectional view of the end of a mechanical pencil;

[0065] Figure 38 Cross-sectional view of a mechanical pencil with a complete outer shell and only the lead core tube cap removed, assembled in a multi-purpose pen. Detailed implementation manners

[0066] The present invention will be described in detail below with reference to the embodiments shown in the drawings. It should be noted that these embodiments do not limit the present invention. Any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present invention.

[0067] Please refer Figures 1 to 38 As shown, the present invention discloses a lead-out mechanism applicable to multi-specification mechanical pencil cores (hereinafter referred to as "lead-out mechanism 21b"), which can be assembled in a multi-purpose pen 100 to make the multi-purpose pen 100 applicable to multi-specification mechanical pencil cores, so as to solve the problems in the prior art that the multi-functional pen has a single applicable lead core specification, is prone to accidental lead-out, and the mechanical pencil core does not retract sufficiently into the pen barrel. Among them, the multi-specification mechanical pencil cores include similar mechanical pencil cores using multi-specification lead cores.

[0068] It should be noted that the multi-purpose pen 100 can be used to assemble pen cores A of different types and specifications when going out. That is, it can be compatible with pen cores A of different types and specifications inside, and specifically can include gel pen refill replacements, mechanical pencil refill replacements, pencil (short pencil) refill replacements, and lead core (thick lead core) refill replacements of different thicknesses and shapes, etc., so as to facilitate people who like to sketch, draw, record important events, feelings, inspirations, data, etc. when going out; at the same time, it can also be used to prevent a series of situations caused by the pen core A protruding from the multi-purpose pen housing 10 when carried out.

[0069] Refer Figure 1As shown in the figure, the multi-functional pen 100 includes: a multi-functional pen housing 10, a lifting member 21 and a limiting member 22 disposed inside the multi-functional pen housing 10 and sleeved outside the pen core A, and the lifting member 21 is sleeved outside the end of the pen core A. The end of the pen core A is clamped by the lifting member 21, and the other end of the pen core A is clamped by the limiting member 22 to achieve stable assembly of the pen core A in the multi-functional pen 100, and it can be adjusted adaptively according to pen cores A of different thicknesses, thereby solving the problems that the types and specifications of the replacement cores of existing writing tools are different, the pen core needs to be replaced after use but there are no pen cores of the same type and specification in the local market, and if you bring your own replacement cores, there are inconvenient problems that different types and specifications of replacement cores need to be carried at the same time.

[0070] Refer Figures 1 to 3 and Figure 6 As shown in the figure, the multi-functional pen housing 10 includes: a pen cap 15, a pen barrel 14, a positioning member 13, a pen grip 12 and a pen tip 11 arranged longitudinally from top to bottom in sequence; the lifting member 21 is arranged inside the pen barrel 14, and the limiting member 22 is arranged inside the pen grip 12. The pen tip 11 is arranged at one end of the pen grip 12 far from the pen barrel 14. The pen tip 11 includes: a pen tip outer shell 111 and a tightening bowl 112 arranged inside the pen tip outer shell 111. The tightening bowl 112 is bowl-shaped and surrounds the pen tip A1 included in the pen core A and has elasticity. The tightening bowl 112 includes: a tightening bowl body 1121 and a tightening bowl edge 1122 arranged at the top of the tightening bowl body 1121. The tightening bowl body 1121 is formed by at least three elastic pieces (not marked) enclosing in an arc shape. Fine gaps (not shown) are formed between the elastic pieces, and the ends extend radially outward to form a clamping mouth 1123 for clamping the pen tip A1 at the center position of the tightening bowl 112. The diameter of the clamping mouth 1123 can be adjusted through the fine gap by the elastic pieces to clamp pen cores A of different thicknesses. When the pen core A extends out of the multi-functional pen housing 10, the pen tip A1 moves longitudinally downward inside the multi-functional pen housing 10 and extends out from the pen tip 11. At this time, the pen tip A1 passes through the clamping mouth 1123 and the pen core A is clamped by the elastic pieces, thereby achieving stable assembly of the pen core A when the multi-functional pen 100 is in use. Preferably, the tightening bowl 112 is made of stainless steel with excellent elasticity and moderate elasticity and has eight elastic pieces.

[0071] Refer Figure 2 and Figure 3As shown, one end of the pen grip 12 close to the pen cap 11 radially contracts inward to form a lower pen grip connecting portion 121, and an external thread (not labeled) of the lower pen grip connecting portion is formed on the outer side of the lower pen grip connecting portion 121. One end of the pen cap 11 close to the pen grip 12 forms a pen cap connecting portion 113 sleeved on the outer side of the lower pen grip connecting portion 121, and an internal thread (not labeled) of the pen grip connecting portion adapted to the external thread of the lower pen grip connecting portion is formed on the inner side of the pen cap connecting portion 113. The detachable assembly of the pen cap 11 and the pen grip 12 is realized by the mutual adaptation of the external thread of the lower pen grip connecting portion and the internal thread of the pen grip connecting portion. At the same time, the tightening hoop edge 1122 extends into the pen cap connecting portion 113, and the top surface of the tightening hoop edge 1122 contacts the bottom surface of the lower pen grip connecting portion 121. When the external thread of the lower pen grip connecting portion and the internal thread of the pen cap connecting portion are screwed tightly together, the tightening hoop edge 1122 is clamped jointly by the lower pen grip connecting portion 121 and the pen cap connecting portion 113, thereby realizing the detachable assembly of the tightening hoop 112.

[0072] Refer to Figure 2 , Figure 4 , Figure 7 , Figure 8 and Figure 21As shown, one end of the pen grip 12 close to the pen shaft 14 forms a pen grip upper connecting part 122 that radially contracts inward. The positioning member 13 includes: a first positioning tube 131 sleeved on the outer side of the pen grip upper connecting part 122 and a second positioning tube 132 sleeved on the outer side of one end of the pen grip 12 close to the pen shaft 14. The pen shaft 14 is sleeved on the outer side of the first positioning tube 131 and abuts against the second positioning tube 132. The multi-functional pen housing 10 further includes: a rubber ring 17 arranged between the pen shaft 14 and the pen grip 12. A first groove 1221 for partially accommodating the rubber ring 17 is formed on the outer side part of the pen grip upper connecting part 122, and a second groove 141 for partially accommodating the rubber ring 17 is formed on the inner side part of the pen shaft 14. A gap C1 is formed between the inside of the pen shaft 14 above the first positioning tube 131 and the outer wall of the pen grip upper connecting part 122. Thus, the rubber ring 17 is accommodated in the first groove 1221 and the second groove 141, and the pen shaft 14 can longitudinally move relative to the pen grip 12 through the gap C1. When the rubber ring 17 is accommodated in the first groove 1221 and the second groove 141, the cross-section of the rubber ring 17 is larger than the cross-sections of the first groove 1221 and the second groove 141, so that the rubber ring 17 fills the first groove 1221 and the second groove 141. In a state without external force, the rubber ring 17 prevents the pen grip 12 and the pen shaft 14 from rotating or disengaging, thereby ensuring stable assembly between the pen grip 12 and the pen shaft 14. At the same time, the inner side of the end of the pen shaft 14 close to the positioning member 13 is provided with a first chamfer D1, and the longitudinal two ends of the second groove 141 close to the pen grip 12 are respectively provided with a second chamfer D2 and a third chamfer D3. A wedge-shaped groove C2 is formed between the first chamfer D1 and the second chamfer D2, and the wedge-shaped groove C2 radially contracts inward longitudinally from bottom to top (that is, a wedge-shaped groove C2 in the shape of a triangular pyramid is formed).

[0073] Refer Figure 5 to Figure 7As shown, an annular platform H1 is formed at one end of the pen grip 12 near the pen barrel 14, and a rubber tube 123 is provided on the annular platform H1 to contact the second positioning tube 132. That is, the rubber tube 123 is provided on the annular platform H1, and the second positioning tube 132 is sleeved on the outside of the rubber tube 123 and in contact with the rubber tube 123, so that the rubber tube 123 fills the annular platform H1, thereby realizing the stable assembly and elastic movement of the positioning member 13 and the pen grip 12. At the same time, a first placement hole 1231 and a second placement hole 1232 are formed at the bottom of the annular platform H1 and communicate with the annular platform H1. The first placement hole 1231 and the second placement hole 1232 intersect, and the two ends of the rubber tube 123 are respectively placed in the first placement hole 1231 and the second placement hole 1232, and they abut against each other to further realize the stable assembly of the rubber tube 123 on the pen grip 12. In addition, an opening E1 is provided on the side of the first placement hole 1231 and the side of the second placement hole 1232 for placing both ends of the rubber tube 123. The opening E1 is rectangular, and the longitudinal length of the opening E1 is equal to the longitudinal length of the first placement hole 1231 and the longitudinal length of the second placement hole 1232. The lateral width of the opening E1 is smaller than the diameter of the rubber tube 123. Thus, the two ends of the rubber tube 123 are pressed into the first placement hole 1231 and the second placement hole 1232 through the opening E1 to achieve stable assembly of the rubber tube 123.

[0074] Specifically, when assembling the pen grip 12 and the pen shaft 14, one end of the rubber tube 123 is pressed into the first placement hole 1231 or the second placement hole 1232 from the opening E1, the rubber tube 123 is wound around the annular platform H1, the rubber tube 123 is pressed onto the annular platform H1 and tightened, the other end of the rubber tube 123 is pressed into the second placement hole 1232 or the first placement hole 1231 from the opening E2, and the second positioning tube 132 of the positioning member 13 is sleeved outside the annular platform H1 to press the rubber tube 123. The rubber ring 17 is sleeved on the first groove 1221 formed in the upper connecting part 122 of the pen grip, and the end of the pen shaft 14 with the first chamfer D1 is sleeved outside the upper connecting part 122 of the pen grip. During the sleeving process (i.e., when the pen shaft 14 longitudinally moves downward to be sleeved outside the first positioning tube 131), the first chamfer D1 first contacts the rubber ring 17, then the protruding part between the wedge-shaped grooves C2 contacts the rubber ring 17 and gradually compresses it, causing the rubber ring 17 to deform. Finally, the rubber ring 17 is partially accommodated in the second groove 1222 through the gap C1, thereby realizing the stable assembly of the pen grip 12 and the pen shaft 14. Without applying external force to the multi-functional pen 100, the pen shaft 14 and the pen grip 12 are stably installed; when a rotational force is applied to the pen shaft 14 or the pen grip 12, the pen shaft 14 and the pen grip 12 rotate relative to each other; when a longitudinally downward force is applied to the pen shaft 14, the pen shaft 14 longitudinally moves downward, and the second groove 1222 moves to a position lower than the first groove 1221. When the longitudinally downward force applied to the pen shaft 14 stops, the pen shaft 14 is reset under the combined elastic recovery of the rubber ring 17 and the rubber tube 123, and the second groove 1222 returns to a position higher than the first groove 1221, thereby ensuring the smooth pressing and elastic recovery of the multi-functional pen 100. When replacing the pen core A, a reverse force is applied to the pen shaft 14 and the pen grip 12, the rubber ring 17 deforms and disengages from the second groove 1222 (the second chamfer D2 helps the rubber ring 17 to disengage), and slides away from the pen shaft 14 through the gap C1, causing the pen grip 12 and the pen shaft 14 to disengage.

[0075] As shown in Figure 2 , the multi-functional pen housing 10 further includes: a rubber 16 disposed between the pen cap 15 and the pen shaft 14, and the pen cap 15 and the pen shaft 14 form a detachable assembly. For its specific assembly method, for example, it can be by means of a buckle or the like, and this embodiment does not specifically limit this. The pen cap 15 forms a first accommodation chamber (not marked), and the pen shaft 14 forms a second accommodation chamber (not marked), so that a rubber storage chamber 161 for placing the rubber 16 is formed by combining the first accommodation chamber and the second accommodation chamber. Of course, the rubber storage chamber 161 can also be formed only at one end of the pen shaft 14 close to the pen cap 15, or the rubber storage chamber 161 is formed only at one end of the pen cap 15 close to the pen shaft 14, and this embodiment does not specifically limit this. At the same time, a round hole E9 is opened between the second accommodation chamber and the lifting member 21, and the round hole longitudinally covers the following cover hole for the lead core 31 to penetrate through.

[0076] In the present application, the lifting member 21 includes two specific embodiments. The two lifting members 21 (hereinafter referred to as the lifting member 21a and the core-extracting mechanism 21b) can be alternately assembled as replacement parts. When the pen core A is a gel pen core, an automatic pen core of a multi-functional pen, an automatic pen core with the outer shell removed, or an automatic pen core with the outer shell cut short, the lifting member 21a is assembled; when the pen core A is an automatic pen core with a complete outer shell structure, the core-extracting mechanism 21b is assembled. For specific examples, please refer to the following, and details are not repeated here. At the same time, in the present application, the first fixing member included in the lifting member 21 also includes two specific embodiments. The two first fixing members can be alternately assembled as replacement parts, and the two first fixing members are respectively adapted to pen cores A of different thicknesses. When the pen core A is a thick rod, the first fixing member 213b is assembled; when the pen core A is a thin rod, the first fixing member 213a is assembled. Similarly, the second fixing member is similar to the above-mentioned first fixing member, and details are not repeated in this embodiment.

[0077] Refer to Figure 13 , Figure 17 , Figure 19 and Figure 29 As shown, the lifting member 21a includes: a lifting member nut 211a, a lifting member hollow screw 212a partially embedded in the lifting member nut 211a, and a first fixing member 213 (i.e., the first fixing member 213a or the first fixing member 213b) disposed inside the lifting member nut 211a and abutted against the top end of the lifting member hollow screw 212a; the first fixing member forms a first elastic member (i.e., the first elastic member 2131a or the first elastic member 2131b) surrounding and disposed outside the end of the pen core A, and the first elastic member is in contact with the pen core A and applies a radially inward force to the pen core A to clamp the end of the pen core A. The end of the pen core A is clamped by the first elastic member to ensure stable assembly of the end of the pen core A in the multi-functional pen housing 10.

[0078] Specifically, refer to Figure 2 and Figure 13As shown, an external thread 2111a of the lifting member is formed on the outer side of the lifting member nut 211a, and an internal thread 142 of the pen barrel adapted to the external thread 2111a of the lifting member is formed on the inner side of the pen barrel 14. By driving the pen barrel 14 to rotate axially relative to the pen grip 12, the pen core A is longitudinally moved within the pen barrel 14 by the lifting member 21a, so as to achieve the purpose of extending or retracting the pen core A into or from the multi-functional pen housing 10, and thereby avoid the situation in the prior art that the core extending button of the multi-functional pen is often provided at its top and is likely to be accidentally touched when placed in the pocket. A part of the hollow screw 212a of the lifting member is embedded inside the lifting member nut 211a, and a through hole E2 for the pen core A to pass through is formed at the central position. An external thread 2122a of the locking portion of the lifting member is formed on the outer side of the hollow screw 212a of the lifting member, and an internal thread 2112a of the lifting member adapted to the external thread 2122a of the locking portion of the lifting member is formed on the inner side of the lifting member nut 211a. The detachable assembly of the lifting member nut 211a and the hollow screw 212a of the lifting member is realized by the mutual adaptation of the external thread 2122a of the locking portion of the lifting member and the internal thread 2112a of the lifting member. At the same time, the longitudinal length of the first fixing member 213a or the first fixing member 213b can be adjusted by adjusting the longitudinal position of the hollow screw 212a of the lifting member inside the lifting member nut 211a. The hollow screw 212a of the lifting member further includes a rotating handle 2121a formed on the side of the hollow screw 212a of the lifting member away from the first fixing member. An axial rotational force can be applied to the hollow screw 212a of the lifting member through the rotating handle 2121a to screw the hollow screw 212a of the lifting member into the lifting member nut 211a.

[0079] Refer Figure 13 , Figure 17 and Figure 18As shown, the first fixing member 213a is adapted to the thin-barreled pen refill A. The first fixing member 213a includes: a first upper fixing ring 2132a and a first lower fixing ring 2133a coaxially arranged, and a first elastic member 2131a is disposed between the first upper fixing ring 2132a and the first lower fixing ring 2133a. The first elastic member 2131a includes: at least three pairs of clips symmetrically arranged along the central axis of the first upper fixing ring 2132a or the first lower fixing ring 2133a. The top ends of the two pairs of clips are inclined towards each other and abut against each other, and their ends are movably connected to the first upper fixing ring 2132a and the first lower fixing ring 2133a to adjust the tilt angle. The ends of the two clips are movably connected to the first upper fixing ring 2132a and the first lower fixing ring 2133a respectively in an elastic connection, and the elastic connection is bent. Preferably, the first fixing member 213a is made of one-piece stamped stainless steel. Taking clips 2134a and 2135a as examples, clips 2134a and 2135a are a pair of clips. Clips 2134a and 2135a are inclined towards each other. The end of clip 2134a is movably connected to the first upper fixing ring 2132a, and the angle between the plane of clip 2134a and the plane of the first upper fixing ring 2132a (i.e., the inclination angle of clip 2134a) can be adjusted. The end of clip 2135a is connected to the first lower fixing ring 2133. A movable connection is provided, and the angle between the plane of the clamping piece 2135a and the plane of the first lower fixing ring 2133a (i.e., the tilt angle of the clamping piece 2135a) can be adjusted. The top of the clamping piece 2134a abuts against the top of the clamping piece 2135a. Thus, the size of the through hole E3 formed at the center of the clamping piece for the pen refill A to pass through can be adjusted by adjusting the tilt angles of the clamping pieces 2134a and 2135a. The clamping piece is elastic, thereby achieving the clamping of different thin pen refills A. Specifically, the longitudinal length of the first fixing member 213a can be adjusted by rotating the hollow screw 212a of the lifting member relative to the nut 211a of the lifting member, so as to further adjust the distance between the first upper fixing ring 2132a and the first lower fixing member 2133a, thereby achieving the purpose of adjusting the tilt angle of the clamping piece. The first fixing member 213a also includes: a rubber sleeve fitted on the top of the clip. Taking the clip 2135a as an example, the top of the clip 2135a is fitted with a rubber sleeve 2136a. Thus, the clip 2135a does not directly contact the pen refill A, but indirectly contacts the pen refill A through the rubber sleeve 2136a, thereby enhancing the clamping effect of the first fixing member 213a on the pen refill A.On the outer sides of the first upper fixing ring 2132a and the first lower fixing ring 2133a, a first upper positioning portion 2137a and a first lower positioning portion (not shown) are respectively protruded. Inside the lifting member nut 211a, a first upper positioning groove 2113a and a first lower positioning groove (not labeled) for accommodating the first upper positioning portion 2137a and the first lower positioning portion are formed. The first upper positioning portion 2137a and the first lower positioning portion are respectively accommodated in the first upper positioning groove 2113a and the first lower positioning groove, so as to achieve stable assembly of the first fixing member 213a in the lifting member nut 211a. The first upper positioning groove 2113a and the first lower positioning groove can be two grooves or one groove. Preferably, the first upper positioning groove 2113a and the first lower positioning groove are configured as one groove.

[0080] See Figure 19 And Figure 20As shown, the first fixing member 213b is adapted to the thick-barreled pen refill A. The first fixing member 213b includes: a first upper fixing ring 2132b and a first lower fixing ring 2133b coaxially arranged, and a first elastic member 2131b is disposed between the first upper fixing ring 2132b and the first lower fixing ring 2133b. The first elastic member 2131b includes at least three pairs of clips symmetrically arranged along the central axis of the first upper fixing ring 2131b or the first lower fixing ring 2133b. The top ends of the two pairs of clips are inclined towards each other and abut against each other, and the ends are movably connected to the first upper fixing ring 2132b and the first lower fixing ring 2133b to adjust the tilt angle. Taking clips 2134b and 2135b as examples, clips 2134b and 2135b are a pair of clips. Clips 2134b and 2135b are inclined towards each other. The end of clip 2134b is movably connected to the first upper fixing ring 2132b, and the angle between the plane of clip 2134b and the plane of the first upper fixing ring 2132b can be adjusted (i.e., the inclination angle of clip 2134b). The end of clip 2135b is connected to the first lower fixing ring 2133. b. The clamping element is movable and the angle between the plane of the clamping piece 2135b and the plane of the first lower fixing ring 2133b (i.e., the tilt angle of the clamping piece 2135b) can be adjusted. The top of the clamping piece 2134b abuts against the top of the clamping piece 2135b. Thus, the size of the through hole E4 formed at the center of the clamping piece for the pen refill A to pass through can be adjusted by the tilt angle of the clamping piece 2134b and the tilt angle of the clamping piece 2135b. The clamping piece is elastic, thereby achieving clamping of pen refills A of different thicknesses. The first fixing member 213b also includes: a rubber sleeve fitted on the top of the clamping piece. Taking the clamping piece 2135b as an example, the top of the clamping piece 2135b is fitted with a rubber sleeve 2136b. Thus, the clamping piece 2135b does not directly contact the pen refill A, but indirectly contacts the pen refill A through the rubber sleeve 2136b, thereby enhancing the clamping effect of the first fixing member 213b on the pen refill A. The outer sides of the first upper fixing ring 2132b and the outer sides of the first lower fixing ring 2133b respectively protrude to form the first upper positioning part 2137b and the first lower positioning part (not shown). The inner side of the lifting nut 211b forms the first upper positioning groove (not shown) and the first lower positioning groove (not shown) for accommodating the first upper positioning part 2137b and the first lower positioning part respectively, so as to achieve stable assembly of the first fixing member 213b in the lifting nut 211b.

[0081] It should be noted that the main difference between the first fixing member 213a and the first fixing member 213b is that the through hole E3 formed by the first fixing member 213a is smaller than the through hole E4 formed by the second fixing member 213b. When assembling a thin rod refill into the multi-functional pen 100, the first fixing member 213a is used; when assembling a thick rod refill into the multi-functional pen 100, the first fixing member 213b is used. Therefore, the first fixing member 213a and the first fixing member 213b are used as replacement parts to cope with refills A of different thicknesses. At the same time, due to slight differences between thin rod refills produced by different manufacturers and also between thick rod refills produced by different manufacturers, an elastic clip is used to achieve stable clamping of the refill A, thereby achieving stable clamping of refills A of different types and specifications.

[0082] In the present application, referring Figure 33 to Figure 37 as shown, the refill A includes a gel pen refill, a press-type gel pen refill, an automatic refill of a multi-functional pen, and an automatic refill. The automatic refill of the multi-functional pen includes: a lead tube 42 with a built-in lead core 41, a pen tip 44 sleeved on the outer side of the top end of the lead tube 41, and a core protecting tube 43 provided at the top end of the pen tip 44. The automatic refill includes: a lead tube 32 with a built-in lead core 31, a pen tip 35 sleeved on the outer side of the top end of the lead tube 32, a core protecting tube 32 provided at the top end of the pen tip 35, and a housing 33 sleeved on the outer side of the lead tube 32; wherein, the housing 33 is fixed to the pen tip 35. The aforementioned pen tip is the core protecting tube 43 and / or the core protecting tube 34.

[0083] Referring Figures 13 to 16 to Figure 31As shown, the top of the lifting nut 211a is provided with a lifting nut cap 2114a. The lifting nut cap 2114a is recessed downward to form a retaining platform 2115a that abuts against the first fixing member. A first cap hole 2116a is opened at the center of the retaining platform 2115a, and a second cap hole 2117a is opened around the first cap hole 2116a. The first cap hole 2116a and the second cap hole 2117a are tangent, and the diameter of the first cap hole 2116a is different from the diameter of the second cap hole 2117a so that lead cores 31 of different thicknesses can pass through and be assembled into the lead core tube 32. The lifting component 21a also includes: a rotating cover 214a embedded inside the lifting component nut cap 2114a and abutting against the enclosure platform 2115a, and a rubber ring 215a disposed between the rotating cover 214a and the lifting component nut cap 2114a. A first rubber ring groove 2147a is provided on the side of the rotating cover 214a that is in contact with the lifting component nut cap 2114a to partially accommodate the rubber ring 215a. A second rubber ring groove 2118a is provided on the side of the lifting component nut cap 2114a that is in contact with the rotating cover 214a to partially accommodate the rubber ring 215a. Thus, the rotating cover 214a and the lifting component nut 2114a are stably assembled through the rubber ring 215a, and the rubber ring 215a can rotate relative to the lifting component nut 2114a. The top of the rotating cover 214a is provided with four intersecting rotating cover handles 2146a, and the top of the lifting component nut cap 2114a is provided with four equidistant handles 2119a corresponding longitudinally to the rotating cover handles 2141a. The rotating cover 214a and the lifting component nut cap 2114a are coaxially arranged. The rotating cover 214a has five cover holes for lead cores 31 of different thicknesses to pass through. The cover holes include: a first cover hole 2141a located at the center of the rotating cover 214a and passing through the intersection of the rotating cover handles 2141a; a second cover hole 2142a, a third cover hole 2143a, a fourth cover hole 2144a, and a fifth cover hole 2145a located around the first cover hole 2141a and passing through the intersection of the rotating cover handles 2141a. The diameters of the first cover hole 2141a, the second cover hole 2142a, the third cover hole 2143a, the fourth cover hole 2144a, and the fifth cover hole 2145a are different so that lead cores 31 of different thicknesses can pass through and be assembled into the lead core tube 32.

[0084] Specifically, the diameter of the first cover hole 2141a < the diameter of the second cover hole 2142a < the diameter of the third cover hole 2143a < the diameter of the fourth cover hole 2144a < the diameter of the fifth cover hole 2145a, the diameter of the first cap hole 2116a < the diameter of the second cap hole 2117a, and the diameter of the first cap hole 2116a is 0.1 mm - 0.5 mm larger than the diameter of the first cover hole 2141a, the diameter of the second cap hole 2117a is 0.1 mm - 0.5 mm larger than the diameter of the fifth cover hole 2145a, and the diameter of the cover hole is 0.1 mm - 0.5 mm larger than the diameter of the corresponding lead core 31. Drive the rotating cover 214a to rotate around the central axis where the lifting nut cap 2114a is located, so that the second cap hole 2117a is longitudinally aligned with the second cover hole 2142a, the third cover hole 2143a, the fourth cover hole 2144a, and the fifth cover hole 2145a respectively for the lead cores 31 of different thicknesses to continuously penetrate.

[0085] As shown in Figure 15 and Figure 28 , on the rotating cover handle 2146a and the rotating cover handle 2162b on the same side as the second cap hole 2117a, marks 21461a and marks 21621b are respectively provided. If the thinnest lead core 31 is used, there is no need to adjust the axial position of the rotating cover 214a. Put the lead core 31 through the first cover hole 2141a and into the first cap hole 2116a. If lead cores 31 of other specifications are used, drive the rotating cover 214a to rotate axially so that the rotating cover handle 2141a is aligned with the equidistant handle 2119a, and then put the lead core 31 through the corresponding cover hole and into the second cap hole 2117a. The diameter of the cover hole is 0.1 mm - 0.5 mm larger than the diameter of the lead core 31. The cover holes all pass through the rotating cover handle 2141a, the cover hole axis is long, and the diameter of the cap holes (that is, the first cap hole 2116a and the second cap hole 2117a) is larger than the cover hole. Thus, when the multi-purpose pen 100 is inverted or tilted, if the lead core 31 enters the cap hole, it will tilt. Relying on the thin aperture of the cover hole, the long axis of the cover hole, and the tilt formed by the lead core 31 due to the different diameters of the cap hole and the cover hole, it is ensured that the lead core 31 placed in the lead core tube 32 will not fall out of the lead core tube 32.

[0086] In another embodiment, as shown in Figures 22 to 28 and Figure 34As shown, the core ejection mechanism 21b includes: a fine movement lifting member nut 211b, a fine movement lifting member hollow screw 212b partially embedded inside the fine movement lifting member nut 211b, and a first fixing member (not labeled) disposed inside the fine movement lifting member nut 211b and abutting against the top end of the fine movement lifting member hollow screw 212b; the first fixing member forms a first elastic member (not labeled) enclosing and disposed at the end of the refill A, and the first elastic member is in contact with the refill A and applies a radially inward acting force to the refill A to clamp the end of the refill A. By clamping the end of the refill A with the first elastic member, the stable assembly of the end of the refill A within the multi-purpose pen housing 10 is ensured.

[0087] It should be noted that since the first fixing member included in the core ejection mechanism 21b is similar in structure to the first fixing member (i.e., the first fixing member 213a or the first fixing member 213b) included in the lifting member 21a, for its specific structure, reference can be made to the aforementioned first fixing member 213a and the first fixing member 213b, and details will not be elaborated here.

[0088] Refer to Figure 25 And Figure 26 As shown, the fine movement lifting member hollow screw 212b is partially embedded inside the fine movement lifting member nut 211b and a through hole E5 for the refill A to pass through is formed at the central position. A fine movement lifting member nut internal thread 2112b is formed on the inner side of the fine movement lifting member nut 211b, and a fine movement lifting member hollow screw external thread 2121b adapted to the fine movement lifting member nut internal thread 2112b is formed on the outer side of the fine movement lifting member hollow screw 212b. The detachable assembly of the fine movement lifting member nut 211b and the fine movement lifting member hollow screw 212b is achieved through the fine movement lifting member nut internal thread 2112b and the fine movement lifting member hollow screw external thread 2121b. Specifically, the fine movement lifting member hollow screw 212b forms a lifting member locking portion 2123b embedded inside the fine movement lifting member nut 211b and a rotating handle 2122b disposed at the bottom of the lifting member locking portion 2123b (i.e., the rotating handle 2122b is formed at the bottom of the fine movement lifting member hollow screw 212b). The fine movement lifting member hollow screw external thread 2121b is formed on the outer side of the lifting member locking portion 2123b. By applying an axially rotating acting force to the rotating handle 2122b, the fine movement lifting member hollow screw 212b is screwed into the fine movement lifting member nut 211b.

[0089] Refer to Figures 22 to 25As shown, the core ejection mechanism 21b further includes: a micro component 214b embedded in the micro lifting component nut 211b. At least two gaps 2111b are formed on the side of the micro lifting component nut 211b. A micro component slider 2141b is formed on the side of the micro component 214b, which is fitted into the gap 2111b and longitudinally moves along the gap 2111b. A micro component external thread 2142b is formed on the micro component slider 2141b, and a pen barrel internal thread 142 adapted to the micro component external thread 2142b is formed inside the pen barrel 15. By driving the pen barrel 14 to axially rotate relative to the pen grip 12, since the micro component 214b is fitted with the micro lifting component nut 211b to drive the entire core ejection mechanism 21b to longitudinally move, the core ejection mechanism 21b drives the refill A to longitudinally move inside the multi-functional pen 100, thereby achieving the purpose of the refill A extending out of or retracting into the multi-functional pen housing 10, and thus avoiding the situation in the prior art that the core ejection button of the multi-functional pen is often set at its top and is likely to be accidentally touched when placed in the pocket. For the number of the gaps 2111b and the micro component sliders 2141b, at least two are provided, and three, four, or more can also be provided, as long as it can be achieved that by driving the pen barrel 14 to axially rotate relative to the pen grip 12, the refill A can be driven to longitudinally move inside the multi-functional pen 100. Preferably, the number of the gaps 2111b and the micro component sliders 2141b is configured to be four.

[0090] Refer Figure 23 With Figure 25 As shown, the micro component 214b protrudes downward to form a micro ring 2143b that only abuts against the lead core tube 32. The outer end of the outer shell 33 is clamped by the first fixing member included in the core ejection mechanism 21b, and by driving the pen barrel 14 to longitudinally move relative to the pen grip 12, the micro ring 2143b is driven to drive the lead core tube 32 to longitudinally move inside the outer shell 33, thereby achieving the purpose of automatic core ejection of the refill. The micro component 214b further includes: a connecting member 2144b, which is arranged between the top of the first fixing member included in the core ejection mechanism 21b and the micro lifting component nut cap 215b. The micro ring 2143b is formed on the side of the connecting member 2144b facing the first fixing member included in the core ejection mechanism 21b. The micro component slider 2141b is formed on the side of the connecting member 2144b, and the micro component slider 2141b is arranged around the periphery of the connecting member 2144b. The micro component slider 2141b is arc-shaped. In this application, the connecting member 2144b and the micro component slider 2141b can be an integral structure, or the connecting member 2144b and the micro component slider 2141b can be regarded as a split structure and fixedly connected by a process method. This embodiment does not make specific limitations on this. A circular through hole E6 for the lead core 31 to pass through is formed at the center position of the connecting member 2144b, and the micro ring 2143b is arranged around the circular through hole E6.

[0091] Refer Figure 26 With Figure 27 As shown, the lead-out mechanism 21b further includes a micro-movement lifting nut cap 215b disposed at the top of the micro-movement member 214b, and a gap C3 is formed between the micro-movement lifting nut cap 215b and the first fixing member included in the lead-out mechanism 21b to allow the connecting member 2144b to move longitudinally. Specifically, the pen barrel 14 is driven to move longitudinally downward relative to the pen grip 12, and the internal thread 142 of the pen barrel drives the external thread 2142b of the micro-movement member, thereby causing the micro-movement ring 2143b to move longitudinally downward and push the lead tube 32 to move longitudinally downward, so as to achieve the purpose of automatic lead-out; when the pen barrel 14 is stopped from moving longitudinally downward relative to the pen grip 12, the pen barrel 14 and the lead tube 31 are reset under the rebound action of the rubber ring 17, the rubber tube 123 and the springs of the automatic pen lead, thereby driving the micro-movement ring 2143b to reset.

[0092] A first cap hole 2152b is formed at the center of the micro-motion lifting component nut cap 215b, and second cap holes 2153b are formed around the first cap hole 2152b. The micro-motion lifting component nut cap 215b is recessed downward to form a retaining platform 2151b that can support the micro-motion component 214b. Both the first cap hole 2152b and the second cap hole 2153b are formed on the retaining platform 2151b. The first cap hole 2152b and the second cap hole 2153b are tangent, and the diameter of the first cap hole 2152b is different from the diameter of the second cap hole 2153b so that lead cores 31 of different thicknesses can pass through and be assembled into the lead core tube 32. The core-ejection mechanism 21b further includes: a rotating cover 216b embedded inside the micro-lifting nut cap 215b and abutting against the enclosure platform 2151b, and a rubber ring 217b disposed between the rotating cover 216b and the micro-lifting nut cap 215b. A first rubber ring groove 2161b is provided on the side of the rotating cover 216b that is in contact with the micro-lifting nut cap 215b to accommodate the rubber ring 217b. A second rubber ring groove 2154b is provided on the side of the micro-lifting nut cap 215b that is in contact with the rotating cover 216b to accommodate the rubber ring 217b. Thus, the rotating cover 216b and the micro-lifting nut cap 215b are stably assembled through the rubber ring 217b, and the rotating cover 216b can rotate relative to the micro-lifting nut cap 215b. The top of the rotating cover 216b is provided with four intersecting rotating cover handles 2162b, and the top of the micro-adjustment lifting nut cap 215b is provided with four equidistant handles 2155b corresponding longitudinally to the rotating cover handles 2162b. The rotating cover 216b and the micro-adjustment lifting nut cap 215b are coaxially arranged. The rotating cover 216b has five cover holes for lead cores 31 of different thicknesses to pass through. The cover holes include: a first cover hole 2163b located at the center of the rotating cover 216b and passing through the rotating cover handles 2162b; and second cover holes 2164b, third cover holes 2165b, fourth cover holes 2166b, and fifth cover holes 2167b located around the first cover hole 2163b and passing through the rotating cover handles 2162b. The diameters of the first cover hole 2163b, the second cover hole 2164b, the third cover hole 2165b, the fourth cover hole 2166b, and the fifth cover hole 2167b are different so that lead cores 31 of different thicknesses can pass through and be assembled into the lead core tube 32.

[0093] Specifically, the diameter of the first cap hole 2163b < the diameter of the second cap hole 2164b < the diameter of the third cap hole 2165b < the diameter of the fourth cap hole 2166b < the diameter of the fifth cap hole 2167b, the diameter of the first cap hole 2152b < the diameter of the second cap hole 2153b, and the diameter of the first cap hole 2152b is 0.1 mm - 0.5 mm larger than the diameter of the first cap hole 2163b, the diameter of the second cap hole 2153b is 0.1 mm - 0.5 mm larger than the diameter of the fifth cap hole 2167b, and the diameter of the cap hole is 0.1 mm - 0.5 mm larger than the diameter of the corresponding lead core 31. Preferably, the first cap hole 2163b, the second cap hole 2164b, the third cap hole 2165b, the fourth cap hole 2166b, and the fifth cap hole 2167b correspond to a 0.3 mm lead core, a 0.5 mm lead core, a 0.7 mm lead core, a 0.9 mm lead core, and a 1.1 mm lead core, respectively.

[0094] Drive the rotary cap 216b to rotate around the central axis where the micro-moving lifting part nut cap 215b is located, so that the second cap hole 2153b is longitudinally aligned with the second cap hole 2164b, the third cap hole 2165b, the fourth cap hole 2166b, and the fifth cap hole 2167b respectively for the continuous penetration of lead cores 31 with different thicknesses. When adding a lead core, open the pen cap 15 and take out the rubber 16, move the lifting part 21 to the uppermost position by rotating the pen barrel 14, pass through the round hole E9, then through the cap hole corresponding to the lead core specification of the automatic pen core A, and pass through the cap hole (if the lead core output mechanism 21b is used, then through the through hole E6), and put the corresponding lead core into the lead core tube 32 without disassembling the pen barrel 14 and the pen grip 12. Relying on the small diameter of the cap hole (the diameter of the cap hole is 0.1 mm - 0.5 mm larger than the diameter of the corresponding lead core 31), the long axis of the cap hole (via the intersection of the rotary cap handles), and the inclination formed by the lead core 31 due to the different diameters of the cap hole and the cap hole, it is ensured that the lead core 31 placed in the lead core tube 32 will not fall out of the lead core tube 32, and the first cap hole 2163b and the first cap hole 2152b that are always in the aligned and open state at the central position are for the thinnest specification lead core to be put in, so lead cores of various specifications will not fall out of the lead core tube 32.

[0095] See Figure 9 and Figure 30 As shown, the limiting member 22 includes: a limiting member nut 221, a limiting member hollow screw 222 partially embedded inside the limiting member nut 221, and a second fixing member (not shown) provided inside the limiting member nut 221 and abutting against the top end of the limiting member hollow screw 222; the second fixing member forms a second elastic member (not shown) surrounding the outside of the pen core A, and the second elastic member is in contact with the pen core A and applies a radially inward force to the pen core A to clamp the pen core A, and the pen core A is further ensured to be stably assembled in the multi-purpose pen housing 10 by clamping the pen core A end through the second elastic member.

[0096] It should be noted that since the second fixing member included in the limiting member 22 is similar in structure to the first fixing member included in the lifting member 21a (i.e., the first fixing member 213a or the first fixing member 213b), for its specific structure, reference may be made to the aforementioned first fixing member 213a and the first fixing member 213b, which will not be elaborated here.

[0097] Refer to Figures 9 to 12 As shown, a part of the hollow screw 222 of the limiting member is embedded inside the limiting member nut 221, and a through hole E7 for the refill A to pass through is formed at the central position. An internal thread 2211 of the limiting member nut is formed inside the limiting member nut 221, and an external thread 2221 of the hollow screw of the limiting member, which is adapted to the internal thread 2211 of the limiting member nut, is formed on the outside of the hollow screw 222 of the limiting member. The detachable assembly of the limiting member nut 221 and the hollow screw 222 of the limiting member is realized through the internal thread 2211 of the limiting member nut and the external thread 2221 of the hollow screw of the limiting member. Specifically, a locking portion 2222 of the hollow screw of the limiting member, which is embedded inside the limiting member nut 221, and a rotating handle 2223 provided at the bottom of the locking portion 2222 are formed on the hollow screw 222 of the limiting member. The external thread 2221 of the hollow screw of the limiting member is formed on the outside of the locking portion 2222. By applying an axial rotational force to the rotating handle 2223, the hollow screw 222 of the limiting member is screwed inside the limiting member nut 221. A nut cap 2212 of the limiting member nut is provided at the top of the limiting member nut 221. A surrounding platform 2213 of the limiting member, which abuts against the second fixing member, is formed by the nut cap 2212 being recessed downward. A handle 2214 of the nut cap of the limiting member is formed at the top of the nut cap 2212 of the limiting member. The handle 2214 of the nut cap of the limiting member and the surrounding platform 2213 of the limiting member are coaxially arranged, and through holes E8 for the refill A to pass through are formed at the central positions of the handle 2214 of the nut cap of the limiting member and the surrounding platform 2213 of the limiting member. A convex portion 223 protrudes from the outside of the limiting member nut 221, and a sliding groove 124 for the longitudinal sliding of the convex portion 223 is formed inside the pen grip 12. By longitudinally moving the convex portion 223 along the contour formed by the sliding groove 124 inside the multi-purpose pen housing 10, the longitudinal position of the limiting member 22 is adjusted, so as to realize the clamping of refills A of different types and specifications at different positions, in order to adapt to refills A of different types and specifications.

[0098] The following shows the specific implementation manners of assembling refills A of different types and specifications inside the multi-purpose pen 100.

[0099] Since the difference in the assembly of the thick-bar gel pen refill and the thin-bar gel pen refill lies in the first fixing members used for the thick bar and the thin bar, the specific assembly manner of the thin-bar gel pen refill is omitted in this application, and only the thick-bar gel pen refill is shown for illustrative purposes. Refer to Figure 31As shown, if the refill A is the refill A2 of a thick-barrel gel pen, the lifting member 21a (with the first fixing member for thick-barrels assembled inside) is assembled on the outer side of the end of the thick-barrel gel pen refill A2, and the limiting member 22 (with the second fixing member for thick-barrels assembled inside) is assembled on the outer side of the other end of the thick-barrel gel pen refill A2 to ensure the stable assembly of the thick-barrel gel pen refill A2 in the multi-functional pen 100. When in use, the pen barrel 14 is driven to rotate clockwise or counterclockwise relative to the pen grip 12, so that the lifting member 21a带动 the thick-barrel gel pen refill A2 to move longitudinally downward in the multi-functional pen 100, making the tip of the thick-barrel gel pen refill A2 extend from the housing 10; when not in use, the pen barrel 14 is driven to rotate counterclockwise or clockwise relative to the pen grip 12, so that the lifting member 21a带动 the thick-barrel gel pen refill A2 to move longitudinally upward in the multi-functional pen 100, making the refill of the thick-barrel gel pen refill A2 contract from the housing 10. The thick-barrel gel pen refill A2 is driven to extend and contract by rotation to avoid the situation in the prior art that since the pen tip button of a multi-functional pen is often set at its top, it is easy to accidentally touch the pen tip button when placed in a pocket.

[0100] Refer Figure 32 As shown, if the refill A is the refill A3 of a press-type gel pen, the press-type gel pen refill A3 is only one kind of press-type gel pen refills on the market, but the protection scope of this application cannot be limited thereby. The upper end of the press-type gel pen refill A3 is thick-barrel and the lower end is thin-barrel. The lifting member 21a (with the first fixing member for thick-barrels assembled inside) is assembled on the outer side of the end of the press-type gel pen refill A3, and the limiting member 22 (with the second fixing member for thin-barrels assembled inside) is assembled on the outer side of the other end of the press-type gel pen refill A3 to ensure the stable assembly of the press-type gel pen refill A3 in the multi-functional pen 100. When in use, the pen barrel 14 is driven to rotate clockwise or counterclockwise relative to the pen grip 12, so that the lifting member 21a带动 the press-type gel pen refill A3 to move longitudinally downward in the multi-functional pen 100, making the tip of the press-type gel pen refill A3 extend from the housing 10; when not in use, the pen barrel 14 is driven to rotate counterclockwise or clockwise relative to the pen grip 12, so that the lifting member 21a带动 the press-type gel pen refill A3 to move longitudinally upward in the multi-functional pen 100, making the refill of the press-type gel pen refill A3 contract from the housing 10. The press-type gel pen refill A3 is driven to extend and contract by rotation to avoid the situation in the prior art that since the pen tip button of a multi-functional pen is often set at its top, it is easy to accidentally touch the pen tip button when placed in a pocket.

[0101] Refer Figure 34 As shown, if the refill A is the automatic refill of a multi-functional pen (that is, Figure 34As shown in the mechanical pencil lead A4), the lifting member 21a (internally equipped with a first fixing member for the thin rod) is assembled on the outer side of the end of the mechanical pencil lead A4), and the limiting member 22 (internally equipped with a second fixing member for the thin rod) is assembled on the outer side of the other end of the mechanical pencil lead A4) to ensure the stable assembly of the mechanical pencil lead A4) within the multi-functional pen 100. When in use, the driving pen rod 14 is rotated clockwise or counterclockwise relative to the pen grip 12, causing the lead core tube 43 to extend from the housing 10. The clamping opening 1123 of the tightening bowl 112 clamps the lead core tube 34 of the mechanical pencil lead A4), and the pen tip 44 abuts against the inner wall of the tightening bowl 112. Then, the driving pen rod 14 is longitudinally moved downward relative to the pen grip 12 to make the mechanical pencil lead A4) deliver the lead core. When the driving of the pen rod 14 stops, the pen rod 14 rebounds under the action of the rubber ring 17, the rubber tube 123, and the spring自带 of the mechanical pencil lead A4), and the lead core tube 42 moves longitudinally upward along with the pen rod 14. When not in use, the driving pen rod 14 is rotated counterclockwise or clockwise relative to the pen grip 12, causing the lifting member 21a to drive the mechanical pencil lead A4) to move longitudinally upward within the multi-functional pen 100, making the lead core tube 43 contract from the housing 10, so as to avoid the situation in the prior art where the lead core ejection button of the multi-functional pen is often set at its top and is likely to be accidentally touched when placed in the pocket.

[0102] See Figure 35 and Figure 36 shown. If the pen lead A is a mechanical pencil lead, and Figure 35 the cap (not shown) of the outer shell 33 and the lead core tube 32 of the mechanical pencil lead shown in is removed to form the mechanical pencil lead A5. Figure 36The upper half of the mechanical pencil lead shortening housing 33 shown in the figure forms a mechanical pencil lead A6 with the removal of the cap (not shown) of the lead tube 32. The lifting member 21a is assembled on the outer side of the end of the mechanical pencil lead A5 (or the mechanical pencil lead A6), and the limiting member 22 is assembled on the outer side of the other end of the mechanical pencil lead A5 (or the mechanical pencil lead A6) to ensure the stable assembly of the mechanical pencil lead A5 (or the mechanical pencil lead A6) within the multi-functional pen 100. At this time, the spring自带 by the mechanical pencil lead A5 is disposed below the limiting member 22. Since the lifting member 21a and the limiting member 22 respectively clamp the lead tube 32 and the housing 33 of the mechanical pencil lead A6, and the housing 33 is fixedly connected to the pen tip 35, the spring (not shown)自带 by the mechanical pencil lead A6 is disposed between the lifting member 21a and the limiting member 22. When in use, the driving pen barrel 14 rotates clockwise or counterclockwise relative to the pen grip 12, causing the lead protecting tube 32 to extend from the housing 10, and the driving pen barrel 14 moves longitudinally downward relative to the pen grip 12 to cause the mechanical pencil lead A5 (or the mechanical pencil lead A6) to expose the lead. When the driving of the pen barrel 14 stops, the pen barrel 14 rebounds under the action of the rubber ring 17, the rubber tube 123, and the spring自带 by the mechanical pencil lead, and the lead tube 42 moves longitudinally upward with the pen barrel 14; when not in use, the driving pen barrel 14 rotates counterclockwise or clockwise relative to the pen grip 12, so that the lifting member 21a带动 the mechanical pencil lead A5 (or the mechanical pencil lead A6) to move longitudinally upward within the multi-functional pen 100, causing the lead protecting tube 34 to contract from the housing 10, avoiding the situation in the prior art that the lead exposure button of the multi-functional pen is often disposed at its top and is likely to be accidentally touched when placed in the pocket; at the same time, it also solves the problems that the mechanical pencil lead of the multi-functional pen is applicable to a single lead thickness specification and the housing 33 of some mechanical pencils cannot be removed.

[0103] As shown in Figure 38 the figure, if the lead A is a mechanical pencil lead (i.e., the mechanical pencil lead with the complete housing 33 structure as described above), preferably, the lead A is the internal structure of a Schmidt mechanical pencil, or it can also be formed by a thin rod mechanical pencil lead with only the cap of the lead tube 42 removed Figure 38The automatic pen refill A7 shown has a lead ejection mechanism 21b mounted on the outer end of the automatic pen refill A7, and a limiting member 22 mounted on the outer end of the other end of the automatic pen refill A7 to ensure stable assembly of the automatic pen refill A7 within the multi-purpose pen 100. When the lead ejection mechanism 21b is used to fix the automatic pen refill A7, the opening of the lead tube 32 abuts against the micro-moving ring 2134b, so that the connecting member 2144b is at the top of the gap C3, and then the complete outer shell 33 is clamped by the first fixing member included in the lead ejection mechanism 21b. When needed, the pen lever 14 rotates clockwise or counterclockwise relative to the pen grip 12, causing the lead core tube 32 to extend from the housing 10. The clamping port 1123 of the clamping bowl 112 holds the lead core tube 34 of the automatic pen refill A7, and the pen tip 35 rests against the inner wall of the clamping bowl 112. The pen lever 14 moves longitudinally downward relative to the pen grip 12, so that the micro-moving ring 2134b pushes only the lead core tube 32 longitudinally downward, causing the lead core 31 to extend from the lead core tube 34. The pen barrel 14 is pushed downward relative to the pen grip 12. The pen barrel 14 rebounds under the action of the springs in the rubber ring 17, rubber tube 123, and the automatic refill A7, causing the lead tube 42 to move upward with the pen barrel 14. When not in use, the pen barrel 14 is driven to rotate counterclockwise or clockwise relative to the pen grip, so that the lead ejection mechanism 21b drives the automatic refill A7 to move upward within the multi-purpose pen 100, causing the lead tube 43 to retract from the housing 10. This solves the problems of the multi-functional pen's automatic refill having a single lead thickness specification, and the automatic refill A6 formed by cutting off the upper half of the housing 33 and removing the cap (not shown) of the lead tube 32, where the spring is installed between the housing 43 and the lead tube 32, causing the lead ejection mechanism 21b and the limiting member 22 to easily rotate relative to each other, resulting in the refill not being able to extend or retract.

[0104] It should be noted that the lead-ejecting mechanism 21b can replace the lifting component 21a for use with ballpoint pen leads, multi-functional mechanical pencil leads, short pencils, and thick pencil leads, etc., but the lifting component 21a cannot replace the lead-ejecting mechanism 21b for use with the internal structure of a fully-fledged mechanical pencil or a thin-barreled mechanical pencil. This is because, when using the lead-ejecting mechanism 21b to fix the lead, simply holding the tip of the lead against any part of the mechanism 21b achieves the same function as the lifting component 21a, thus solving many shortcomings of existing multi-functional pens and other writing instruments.

[0105] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

[0106] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0107] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lead-dispensing mechanism suitable for multi-specification automatic pen refills, the automatic pen refill comprising a lead tube with a built-in lead core, a shell sleeved on the outside of the lead tube, a pen tip sleeved on the outside of the top end of the lead tube, and a lead-dispensing tube disposed on the top end of the pen tip, the lead-dispensing mechanism being disposed within a multi-purpose pen housing and sleeved on the outside of the end of the shell, the multi-purpose pen housing comprising a pen barrel and a pen grip arranged longitudinally from top to bottom; Its features are, The core extraction mechanism includes: The micro-motion lifting nut, the first fixing member disposed inside the micro-motion lifting nut, and the micro-motion component embedded in the micro-motion lifting nut; The first fixing member forms a first elastic member that surrounds the outer side of the end of the outer shell, and the first elastic member is in contact with the outer shell and applies a radially inward force to the outer side of the end of the outer shell to clamp the end of the outer shell. The micro-movement member protrudes downward to form a micro-movement ring that only abuts against the lead core tube. The outer side of the micro-movement member forms a micro-movement external thread, and the inner side of the pen barrel forms a pen barrel internal thread that matches the micro-movement external thread. By driving the pen barrel to move longitudinally relative to the pen grip, the micro-moving ring drives the lead core tube to move longitudinally within the outer casing.

2. The core extraction mechanism according to claim 1, characterized in that, The core-exiting mechanism further includes: a hollow screw for micro-motion lifting, which is partially embedded inside the nut of the micro-motion lifting component. The top of the hollow screw for micro-motion lifting abuts against the first fixing component, and the bottom of the hollow screw for micro-motion lifting forms a rotating handle.

3. The core extraction mechanism according to claim 2, characterized in that, The inner side of the nut of the micro-motion lifting component forms an internal thread, and the outer side of the hollow screw of the micro-motion lifting component forms an external thread that matches the internal thread of the nut of the micro-motion lifting component.

4. The core extraction mechanism according to claim 1, characterized in that, The micro-motion lifting component has at least two notches on its nut side, and the micro-motion component side forms a micro-motion component slider that fits into the notches and moves longitudinally along the notches. The micro-motion component external thread is formed on the outside of the micro-motion component slider.

5. The core extraction mechanism according to claim 4, characterized in that, The micro-actuator includes: a connector disposed at the top of the first fixing member, a micro-actuator slider formed on the side of the connector, and a micro-actuator ring formed at the center of the connector on the side facing the first fixing member.

6. The core extraction mechanism according to claim 5, characterized in that, The core-exiting mechanism further includes a micro-motion lifting nut cap disposed at the top of the micro-motion lifting nut, and a gap is formed between the micro-motion lifting nut cap and the first fixing member to allow the connecting member to move longitudinally.

7. The core extraction mechanism according to claim 6, characterized in that, A circular through hole is formed at the center of the connector. The micro-movement ring is arranged around the circular through hole. A first cap hole is opened at the center of the nut cap of the micro-movement lifting component, and a second cap hole is opened around the first cap hole. The first cap hole and the second cap hole are tangent, and the diameter of the first cap hole is different from the diameter of the second cap hole so that lead cores of different thicknesses can pass through and be assembled into the lead core tube.

8. The core extraction mechanism according to claim 7, characterized in that, The core-exiting mechanism further includes: a rotating cover disposed at the top of the nut cap of the micro-motion lifting component and partially embedded inside the nut cap of the micro-motion lifting component, and a rubber ring disposed between the rotating cover and the nut cap of the micro-motion lifting component; The rotating cover has a first rubber ring groove on one side that fits into the nut cap of the micro-adjustment lifting component, which is used to accommodate the rubber ring portion; the micro-adjustment lifting component nut cap has a second rubber ring groove on one side that fits into the rotating cover, which is used to accommodate the rubber ring portion. The top of the rotating cover is provided with four intersecting rotating cover handles, and the top of the micro-motion lifting component nut cap is provided with four handles at equal distances corresponding to the longitudinal direction of the rotating cover handles.

9. The core extraction mechanism according to claim 8, characterized in that, The rotating cover and the nut cap of the micro-motion lifting component are coaxially arranged, and the rotating cover has five cover holes for lead core tubes of different diameters to pass through; The cover holes include: a first cover hole located at the center of the rotating cover and intersecting with the rotating cover handle; and a second, third, fourth, and fifth cover holes located around the first cover hole and intersecting with the rotating cover handle. The diameter of the first cover hole is less than the diameter of the second cover hole, which is less than the diameter of the third cover hole, which is less than the diameter of the fourth cover hole, which is less than the diameter of the fifth cover hole. The diameter of the first cap hole is less than the diameter of the second cap hole. The diameter of the first cap hole is 0.1mm-0.5mm larger than the diameter of the first cover hole. The diameter of the second cap hole is 0.1mm-0.5mm larger than the diameter of the fifth cover hole. The diameter of the cover hole is 0.1mm-0.5mm larger than the diameter of the corresponding lead core. The drive rotating cover rotates around the central axis of the micro-motion lifting component nut cap, so that the second cap hole is longitudinally aligned with the second cover hole, the third cover hole, the fourth cover hole and the fifth cover hole respectively, so that lead cores of different thicknesses can be continuously passed through.

10. The core extraction mechanism according to claim 1, characterized in that, The first fixing member includes: a first upper fixing ring and a first lower fixing ring arranged coaxially, and the first elastic member is disposed between the first upper fixing ring and the first lower fixing ring; The first elastic element includes at least three pairs of clips symmetrically arranged along the central axis of the upper fixed ring or the lower fixed ring. The top ends of the two pairs of clips are inclined towards each other and abut against each other, and their ends are movably connected to the upper fixed ring and the lower fixed ring respectively to adjust the tilt angle.

11. The core extraction mechanism according to claim 10, characterized in that, The outer sides of the first upper fixing ring and the outer sides of the first lower fixing ring respectively protrude to form a first upper positioning part and a first lower positioning part, and the inner side of the micro-movement lifting nut forms a first upper positioning groove and a first lower positioning groove for accommodating the first upper positioning part and the first lower positioning part.

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