Swing type refill outlet pen

Abstract

The invention belongs to the technical field of stationery and discloses a swinging type refill outlet pen which comprises a refill and a pen container, and a transmission sleeve, an inertia part, a locking assembly and a reset assembly are arranged in the pen container. The transmission sleeve is connected with the core rod and used for driving the core rod to move in the axial direction of the pen container. The inertia piece can drive the transmission sleeve to drive the pen point to extend out of the sharp hole according to the swinging action of the pen container and lock the transmission sleeve through the locking assembly; the reset assembly is connected to the transmission sleeve and the locking assembly, and when the pen container is in the unlocking posture, the reset assembly can unlock the transmission sleeve and drive the transmission sleeve to drive the pen point to retract into the sharp hole. According to the swinging type refill outlet pen, the pen point can automatically stretch out and be locked through the action that a user swings the pen container, writing is convenient, posture changes are sensed when the pen is inverted or falls, the pen point is unlocked and retracted in time, and therefore the pen point is prevented from being damaged, operation steps are simplified, and use convenience and durability of the pen are improved.

Description

Technical Field

[0001] This invention relates to the field of stationery technology, and more particularly to a flick-type lead-out pen. Background Technology

[0002] As a basic and widely used writing tool, the pen plays an indispensable role in people's daily study, work and life.

[0003] Conventional pens are mainly divided into two types: push-to-open and cap-type. Cap-type pens rely on a cap to protect the nib; the cap must be removed before use and replaced after writing. Push-to-open pens, on the other hand, extend and retract the nib by pressing a specific part of the pen body. This method eliminates the need for frequent cap removal and replacement, improving convenience to some extent.

[0004] However, with conventional push-to-open pens, if the pen is accidentally dropped and falls to the ground, the pen tip, being constantly extended, is highly likely to make direct contact with the ground. The strong impact can easily damage the pen tip, shortening its lifespan and increasing operating costs. For cap-type pens, the cap is easily lost; once the cap is missing, the pen tip is unprotected and easily damaged. Summary of the Invention

[0005] The purpose of this invention is to provide a flick-type lead-out pen to solve the technical problems of existing technologies, such as the need for manual pressing to retract the lead-out pen tip, which easily leads to tip damage, and the need for frequent cap removal and removal of the cap, which is troublesome and the cap is easily lost.

[0006] To achieve this objective, the present invention adopts the following technical solution: A flick-type lead-out pen includes a lead and a pen barrel. The lead includes a core and a tip disposed at one end of the core. The core is housed within the pen barrel. The front end of the pen barrel has a pointed hole for the tip to pass through. Specifically, the flick-type lead-out pen includes: The transmission sleeve, inertial component, locking component, and reset component are disposed within the pen holder; The transmission sleeve is connected to the core rod and is used to drive the core rod to move along the axial direction of the pen holder; The inertial component can drive the transmission sleeve to extend the pen tip out of the pointed hole and lock the transmission sleeve through the locking component according to the swinging motion of the pen holder; The reset component is connected to the transmission sleeve and the locking component. When the pen holder is in the unlocked position, the reset component can unlock the transmission sleeve and drive the transmission sleeve to retract the pen tip into the tip hole.

[0007] Preferably, the transmission sleeve is provided with a limiting boss, and the side of the limiting boss away from the pointed hole forms a force-bearing surface; when the pen holder is swung, the inertial component can push against the force-bearing surface under the action of inertia, so that the transmission sleeve moves towards the pointed hole.

[0008] Preferably, the inertial element is an inertial spring, which is sleeved on the outer periphery of the transmission sleeve and can slide along the axial direction of the transmission sleeve.

[0009] Preferably, the locking component includes: A guide sleeve is fixed to the inner circumferential wall of the pen holder; The movable component is connected to the tail end of the transmission sleeve and passes through the guide sleeve; The guide sleeve has a limit hole on its inner wall, and a sensor is connected to the movable part; When the pen tip extends out of the pointed hole, the sensing element can be partially engaged in the limiting hole to restrict the movement of the movable element relative to the guide sleeve, thereby locking the transmission sleeve.

[0010] Preferably, the sensing element is a sensing ball, and the movable element has an inclined groove along its own radial direction. The inclined groove has a first end and a second end, and in the direction from the tail end to the front end of the pen holder, the height of the second end is lower than the height of the first end, and the second end has a transition port that connects to the limiting hole. The sensing ball can move along the inclined groove to the second end under the action of gravity, and is engaged with the limiting hole through the transition port.

[0011] Preferably, the reset assembly includes a reset sleeve, which is slidably connected to the inner wall of the pen holder and located between the movable member and the inertial member. The reset sleeve is provided with an extension, and the extension forms a pushing slope on the side facing the guide sleeve. When the pen holder is in the unlocked position, the reset sleeve can move away from the pointed hole along the pen holder axis under the action of gravity, and push the sensing ball out of the limiting hole through the pushing inclined surface, thereby unlocking the transmission sleeve.

[0012] Preferably, an auxiliary sleeve is provided at one end of the reset sleeve near the inertial member. When the pen holder is swung, the inertial member can push against the auxiliary sleeve under the action of inertia and simultaneously drive the reset sleeve to move away from the pointed hole.

[0013] Preferably, the reset assembly further includes a reset spring, the pen holder has a positioning platform, the reset spring is sleeved on the outer periphery of the core rod, the end of the limiting boss near the pointed hole forms a limiting surface, one end of the reset spring abuts against the positioning platform, and the other end abuts against the limiting boss. When the transmission sleeve moves toward the pointed hole, the return spring is compressed; When the transmission sleeve is unlocked, the return spring can generate elastic deformation to push the transmission sleeve to move away from the pointed hole.

[0014] Preferably, the elastic restoring force provided by the return spring to the transmission sleeve is greater than the component of the inertial element's own weight in the pen holder axial direction.

[0015] Preferably, the inner wall of the pen holder is provided with a positioning protrusion, and the reset sleeve can at least partially abut against the positioning protrusion to limit the movement path of the reset sleeve.

[0016] Preferably, the guide sleeve has an axially extending guide groove, and the limiting hole is located in the guide groove; the extension portion extends at least partially into the guide groove and is slidably connected to the guide groove.

[0017] The beneficial effects of this invention are: The present invention proposes a swing-type lead-out pen. When the user swings the pen holder, the inertial component converts the kinetic energy generated by the swing into a driving force on the transmission sleeve, thereby moving the lead rod and pen tip forward. Ultimately, the pen tip extends from the pointed hole at the front of the pen holder, entering a writing-ready state. Subsequently, the locking component locks the transmission sleeve in its current position, ensuring the pen tip remains stably extended during writing, preventing accidental retraction. The reset component operates based on changes in the pen holder's posture. When the pen holder is in an unlocked state, the reset component releases the locking component's constraint on the transmission sleeve and drives the transmission sleeve to move the lead rod and pen tip backward synchronously, completely retracting the pen tip into the pen holder for protection. During use, users only need to hold the pen holder and flick the pen to dispense the lead, effectively avoiding the pressing operation required by traditional push-button pens or the steps of removing and placing the pen cap required by cap-type pens, thus improving ease of use. At the same time, through the pen holder's posture sensing function of the reset component, the pen tip can automatically retract when the pen is accidentally dropped or in a non-use position, effectively avoiding damage caused by the pen tip directly bearing the impact, thus improving the pen's durability and reliability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the flicking lead-out pen provided in an embodiment of the present invention; Figure 2This is an exploded structural diagram of the flicking pen provided in an embodiment of the present invention; Figure 3 This is a partial structural schematic diagram of the flicking lead-out pen provided in an embodiment of the present invention; Figure 4 This is a cross-sectional view of the flicking pen with lead ejection mode provided in the embodiment of the present invention in the lead ejection state; Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 yes Figure 4 Enlarged view of point B in the middle; Figure 7 This is a cross-sectional view of the transmission sleeve and locking assembly provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the guide sleeve provided in an embodiment of the present invention; Figure 9 This is a cross-sectional view of the flicking refill pen provided in the embodiment of the present invention in the refill state.

[0019] In the picture: 1. Pen refill; 11. Pen barrel; 12. Pen nib; 2. Pen holder; 20. Pointed hole; 21. Body; 22. End piece; 23. Clamping rod; 24. Anti-slip structure; 25. Positioning platform; 26. Positioning flange; 3. Transmission sleeve; 31. Limiting boss; 31a. Force-bearing surface; 31b. Limiting surface; 32. Mounting protrusion; 4. Inertial components; 41. Inertial springs; 5. Locking assembly; 51. Guide sleeve; 511. Limiting hole; 512. Guide groove; 52. Moving part; 521. Sensing element; 5211. Sensing ball; 522. Inclined groove; 522a. First end; 522b. Second end; 5221. Transition port; 523. Mounting through groove; 524. Interference rib; 6. Reset assembly; 61. Reset sleeve; 62. Extension; 621. Pushing slope; 63. Auxiliary sleeve; 64. Reset spring. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] See Figures 1 to 9 The flicking pen provided in this embodiment of the invention includes a pen core 1 and a pen barrel 2. The pen core 1 includes a core rod 11 and a pen tip 12 disposed at one end of the core rod 11. The core rod 11 is housed in the pen barrel 2, and the front end of the pen barrel 2 is provided with a pointed hole 20 for the pen tip 12 to pass through.

[0025] The pen holder 2 includes a cylindrical body 21 and an end body 22. The end body 22 is connected to the cylindrical body 21 by threads, that is, the inner wall of the end body 22 has internal threads, and the outer wall of the front end of the cylindrical body 21 has corresponding external threads. A pointed hole 20 is opened at the center of the front end of the end body 22. By unscrewing the end body 22, the internal space of the pen holder 2 can be fully exposed, making it easy to insert the pen refill 1 into the cylindrical body 21.

[0026] To facilitate carrying, a clamp 23 is provided on the outer peripheral wall of the pen holder 2. The clamp 23 is made of elastic metal or plastic. One end of the clamp 23 is fixed to the pen holder 2, and the other free end can be opened and closed elastically, so that the pen can be clamped to a pocket, notebook or document.

[0027] To enhance user comfort and operational stability, an anti-slip structure 24 is provided on the outer peripheral wall of the pen holder 2. In this embodiment, the anti-slip structure 24 is specifically manifested as an anti-slip groove extending along the axial direction of the pen holder 2. Multiple anti-slip grooves are evenly spaced along the circumference of the pen holder 2. The cross-sectional shape of the anti-slip grooves can be arc-shaped, V-shaped, or rectangular, etc. The depth and width of the anti-slip grooves are ergonomically designed to effectively increase the coefficient of friction between the fingers and the surface of the pen holder 2 without affecting the comfort of holding. When the user holds the pen and performs the action of flicking to extend the lead or flicking to unlock, the skin of the fingers will partially embed into the anti-slip grooves, enhancing the grip and directional control, making the flicking action smoother and more accurate, and reducing the possibility of operation failure or the pen slipping out of the hand due to slipping.

[0028] It is understood that the above-mentioned anti-slip groove is only a preferred embodiment. In some embodiments, the anti-slip structure 24 can also be an axially protruding anti-slip ridge, which can also increase friction and guide the grip direction; in other embodiments, it can also be an independent anti-slip sleeve fitted on the grip area of ​​the pen holder 2. The anti-slip sleeve can be made of materials with a higher coefficient of friction, such as rubber, silicone or soft plastic, and is fixed to the outer wall of the pen holder 2 by covering or pasting to provide a softer and more slip-resistant grip experience.

[0029] In this embodiment of the invention, the swing-type lead-out pen also includes a transmission sleeve 3, an inertial component 4, a locking component 5, and a reset component 6 disposed within the pen holder 2.

[0030] Specifically, the transmission sleeve 3 is connected to the core rod 11 and is used to drive the core rod 11 to move along the axial direction of the pen cylinder 2. The transmission sleeve 3 is a hollow cylindrical component with an outer diameter slightly smaller than the inner diameter of the pen cylinder 2, so that the transmission sleeve 3 can be smoothly installed into the pen cylinder 2 and slide back and forth along the axial direction of the pen cylinder 2. The length of the transmission sleeve 3 is designed according to the length and stroke requirements of the pen refill 1.

[0031] The inner cavity shape of the transmission sleeve 3 is adapted to the outer shape of the core rod 11 of the pen refill 1. The core rod 11 is inserted from the front opening of the transmission sleeve 3 until the pen tip 12 approaches the front opening of the transmission sleeve 3. A fixing structure is provided on the inner wall of the transmission sleeve 3, such as an inwardly protruding claw, an elastic clamping piece, or a threaded connection, which can tightly hug or lock the outer surface of the core rod 11, so that a reliable connection is formed between the pen refill 1 and the transmission sleeve 3.

[0032] More specifically, in a specific embodiment, the transmission sleeve 3 is provided with a limiting boss 31. The limiting boss 31 is an annular or partially protruding structure, fixedly connected or integrally formed on the outer peripheral wall of the transmission sleeve 3. The position of the limiting boss 31 is designed according to the stroke of the transmission sleeve 3 in the pen holder 2, and is located at the front of the transmission sleeve 3.

[0033] The limiting boss 31 forms a force-receiving surface 31a on the side away from the pointed hole 20, that is, the force-receiving surface 31a faces the tail end of the pen holder 2, and is used to receive the thrust of the inertial member 4. When the pen holder 2 is swung, the inertial member 4 can push against the force-receiving surface 31a under the action of inertia, and apply a thrust to the transmission sleeve 3, so that the transmission sleeve 3 moves towards the pointed hole 20.

[0034] It is understandable that the "swinging" motion refers to the user holding the pen holder 2 and rapidly swinging or accelerating it along the axis of the pen holder 2, that is, from the end of the pen towards the tip 12, or in a direction roughly parallel to it. This is an intuitive, natural gesture that does not require deliberately searching for and pressing a button.

[0035] The mechanical response of the aforementioned swinging motion is a dynamic trigger. Only a swinging motion with a certain speed and acceleration can provide sufficient inertial force to reliably drive the mechanism, avoiding malfunctions caused by unintentional shaking during daily carrying. Secondly, the direction of the swinging motion is consistent with the direction of core ejection, which is intuitive.

[0036] When the user swings the pen barrel 2 along the pen's axis, the pen barrel 2 and the transmission sleeve 3 gain forward acceleration. However, since the inertial element 4 is sleeved on the transmission sleeve 3 and can slide freely, according to the principle of inertia, the inertial element 4 tends to maintain its original stationary or low-speed state. That is, relative to the pen barrel 2 and the transmission sleeve 3 that are accelerating forward, the inertial element 4 will generate a relative backward displacement. This relative displacement causes the inertial element 4 to slide from the rear end to the front end of the transmission sleeve 3 along the axis of the transmission sleeve 3. During the sliding process, the front end face of the inertial element 4 will eventually abut against and press against the force-bearing surface 31a of the limiting boss 31. As the swinging action continues, the inertial element 4 continuously pushes against the force-bearing surface 31a through inertial force, thereby transferring the kinetic energy generated by the swinging to the transmission sleeve 3, causing the transmission sleeve 3 and the pen refill 1 fixed inside the transmission sleeve 3 to slide along the axis of the pen barrel 2 towards the tip hole 20, and finally causing the pen tip 12 to protrude from the tip hole 20.

[0037] The inertial component 4 utilizes the basic physical principle of inertia to convert the kinetic energy of the swinging motion into mechanical displacement, achieving automatic core ejection without manual pressing. In addition, the force-bearing surface 31a of the limiting boss 31 ensures the stability of the contact between the transmission sleeve 3 and the inertial component 4 and the effective transmission of force, avoiding deflection or jamming.

[0038] In this embodiment, the inertial component 4 is preferably an inertial spring 41. The inertial spring 41 is sleeved on the outer periphery of the transmission sleeve 3. The inertial spring 41 not only has a certain mass, which allows it to slide relative to the pen due to inertia and provide thrust during swinging, but also has an elastic function through a spiral coil structure. Specifically, when the pen holder 2 is swinged, the inertial spring 41 will undergo elastic deformation due to inertia when it pushes against the limiting boss 31, thereby playing a buffering role, reducing wear and noise caused by hard collisions between components, and helping to improve the durability and operating feel of the pen.

[0039] It is understood that in other feasible embodiments, the inertial element 4 is not limited to the aforementioned inertial spring 41. It can also be an inertial sleeve, an inertial block, an inertial ball, or any other inertial structure with appropriate mass, without specific limitations. As long as the inertial element 4 can be sleeved or set on the relevant motion path of the transmission sleeve 3, and can generate displacement relative to the pen holder 2 based on the principle of inertia when the pen holder 2 is swung, thereby converting the kinetic energy of the swung motion into an axial pushing force on the transmission sleeve 3 or the limiting boss 31 on it, the core function of driving the transmission sleeve 3 to move and causing the pen tip 12 to extend can be realized.

[0040] The locking assembly 5 includes a guide sleeve 51 and a movable member 52. The guide sleeve 51 is fixedly mounted on the inner peripheral wall of the pen holder 2, and its position is usually located at the rear of the pen holder 2. The movable member 52 is connected to the tail end of the transmission sleeve 3, and the rear part of the movable member 52 passes through the interior of the guide sleeve 51, so that the movable member 52 can move axially along the guide sleeve 51 with the transmission sleeve 3.

[0041] In this embodiment, to achieve a stable connection and power transmission between the movable part 52 and the transmission sleeve 3, and to facilitate assembly, a combination of plug-in and interference fit is used. Specifically, a columnar mounting protrusion 32 is coaxially provided at the tail end of the transmission sleeve 3. Correspondingly, a mounting through groove 523 with a shape and size matching the mounting protrusion 32 is provided at the bottom of the movable part 52.

[0042] To ensure a tight connection and prevent loosening during use, multiple interference ribs 524 are spaced axially on the inner wall of the mounting slot 523. The interference ribs 524 are typically annular ribs surrounding the inner wall of the mounting slot 523, or multiple protrusions evenly distributed circumferentially. During assembly, the mounting protrusion 32 at the tail end of the transmission sleeve 3 is aligned and inserted into the mounting slot 523 of the movable part 52. During insertion, the interference ribs 524 elastically press against the outer surface of the mounting protrusion 32, creating a tight fit through friction. This connection method not only ensures no axial or radial clearance between the transmission sleeve 3 and the movable part 52, allowing for precise transmission of movement from the transmission sleeve 3 to the movable part 52, but also features a simple structure, convenient assembly, and improved production efficiency.

[0043] It is understood that the above-described interference fit method is only a preferred specific implementation. In other feasible embodiments, the connection method between the movable part 52 and the transmission sleeve 3 is not limited to this. For example, the two can be manufactured in one piece, thereby eliminating the connection link and increasing structural strength; they can also be bolted together and fixed by lateral locking screws for easy disassembly and maintenance; or they can be threaded together, achieving a detachable fastening connection through a helical fit. As long as a stable connection can be achieved between the movable part 52 and the transmission sleeve 3, ensuring that the two move synchronously and integrally in the axial direction, thereby reliably transmitting the displacement of the transmission sleeve 3 to the movable part 52 to meet the position sensing and limiting function requirements of the locking component 5, all technical solutions fall within the scope of protection of this patent.

[0044] To achieve the locking function, a limiting hole 511 is provided on the inner wall of the guide sleeve 51. Simultaneously, a sensor 521 is connected to the movable component 52. When the user swings the pen holder 2, the inertial component 4 pushes the transmission sleeve 3, causing the pen tip 12 to move forward until it fully extends out of the tip hole 20. At the same time, the movable component 52 also moves to a specific corresponding position. At this point, the sensor 521 can partially engage within the limiting hole 511, physically restricting further movement of the movable component 52 relative to the guide sleeve 51. Since the movable component 52 and the transmission sleeve 3 are rigidly connected, the transmission sleeve 3 is also locked, preventing it from retracting due to external force or vibration during writing, thus ensuring the stability of the pen tip 12 in its extended state.

[0045] In a preferred embodiment, the sensing element 521 is a sensing ball 5211. Correspondingly, a slanted groove 522 is formed radially on the movable element 52. The slanted groove 522 has a first end 522a and a second end 522b, and the height of the second end 522b is lower than the height of the first end 522a in the direction from the tail end to the front end of the pen holder 2. That is, when the pen is in a normal writing posture (pen tip 12 facing down), the second end 522b of the slanted groove 522 is in a lower position in the direction of gravity. Furthermore, a transition port 5221 communicating with the limiting hole 511 is provided at the second end 522b.

[0046] When the pen tip 12 is not yet extended or is extending, the sensing ball 5211 may be located at the first end 522a or the middle of the inclined groove 522. When the transmission sleeve 3 drives the movable member 52 to the locking position corresponding to the complete extension of the pen tip 12, the second end 522b of the inclined groove 522 on the movable member 52 and its transition port 5221 are exactly aligned with the limiting hole 511 on the inner wall of the guide sleeve 51.

[0047] At this time, since the pen is usually in a usage posture with the pen tip 12 pointing downwards, the sensing ball 5211 will naturally roll along the inclined surface of the groove 522 from the higher first end 522a to the lower second end 522b under its own gravity, and finally roll to the second end 522b. When the ball reaches the second end 522b, it will partially roll into or be engaged in the limiting hole 511 through the transition port 5221, thereby locking the moving part 52 and the guide sleeve 51 together, completing the locking.

[0048] The reset component 6 can operate according to the posture of the pen holder 2. When the pen holder 2 is in the unlocked posture, the reset component 6 can unlock the transmission sleeve 3 and drive the transmission sleeve 3 to retract the pen tip 12 into the tip hole 20. Specifically, the reset component 6 includes a reset sleeve 61, which is slidably connected to the inner wall of the pen holder 2 and located between the moving part 52 and the inertial part 4.

[0049] A positioning protrusion 26 is provided on the inner wall of the pen holder 2. During its own movement, the end of the reset sleeve 61 can at least partially abut against the positioning protrusion 26, thereby effectively restricting the movement path of the reset sleeve 61 and preventing it from swaying or moving excessively. An extension 62 is provided on the reset sleeve 61, and the side of the extension 62 facing the guide sleeve 51 forms a pushing slope 621.

[0050] The unlocking process of the reset assembly 6 on the transmission sleeve 3 is as follows: When the pen holder 2 is in the unlocked position, for example, when the pen is placed upside down or accidentally dropped, the reset sleeve 61, under its own weight, can overcome the friction with the inner wall of the pen holder 2 and move axially away from the tip hole 20. During this movement, the pushing slope 621 on the extension 62 of the reset sleeve 61 gradually approaches and finally contacts the sensing ball 5211 that is already engaged in the limiting hole 511. As the reset sleeve 61 continues to move, the pushing slope 621 applies a radially inward squeezing force to the sensing ball 5211, thereby pushing the sensing ball 5211 out of the limiting hole 511 and causing it to retract into the inclined groove 522 of the movable member 52. Once the ball is disengaged from the limiting hole 511, the movable member 52 loses its locking constraint relative to the guide sleeve 51, and the transmission sleeve 3 is unlocked.

[0051] It is understandable that the above-mentioned unlocking posture refers to the spatial orientation of the pen holder 2 when it is inverted, that is, when the tip of the pen holder 2 is higher than the tail; and when the angle between the axis of the pen holder 2 and the horizontal plane is within a preset angle range.

[0052] First, it needs to be clarified that the horizontal plane mentioned above refers to a plane perpendicular to the direction of Earth's gravity. That is, in a normal usage environment, such as when the pen is placed on a table, the plane represented by the table or a plane parallel to it can be regarded as a horizontal plane. This reference plane is fixed and does not change with the pen's posture, thus providing a stable benchmark for judging the pen's posture.

[0053] Secondly, the angle between the axis of the flicking pen and the horizontal plane specifically refers to the acute or right angle formed between the axis of the flicking pen and the aforementioned horizontal plane. This axis is usually the longitudinal center line of the pen body, running through both the front and rear ends of the pen holder 2. When the pen is in different postures, the direction of this axis relative to the horizontal plane will change, thus causing the size of the angle to change.

[0054] In this specific embodiment, the preset angle is between 30 and 90 degrees. When the angle between the axis of the pen holder 2 and the horizontal plane falls within this preset range (i.e., the pen tip 12 is approximately or completely upward), it can be determined that the pen holder 2 has entered an effective unlocked posture. At this time, due to the force of its own weight in the axial direction, the reset sleeve 61 can slide along the inner wall of the pen holder 2 towards the pen tail, thereby performing the unlocking action of pushing the sensing ball 5211 out of the limiting hole 511. This triggering mechanism based on gravity and a specific angle ensures that the protection function of the pen tip 12 can be automatically activated when the pen is stored upside down or accidentally dropped, without malfunctioning during normal writing or slight tilting, thus ensuring reliable use. It is understood that the specific value of the preset angle can be adjusted according to the design requirements such as the mass and internal friction coefficient of the reset sleeve 61, and is not limited here.

[0055] In addition to the aforementioned unlocking method based on gravity using the reset sleeve 61, this embodiment also features another unlocking mechanism for the swing-type lead-out pen. Specifically, an auxiliary sleeve 63 is provided at the end of the reset sleeve 61 near the inertial member 4. When the pen is in the lead-out state and not in an unlocked position, the user can swing the pen, causing the inertial member 4 to slide backward relative to the pen holder 2 due to inertia. At this time, the rear end of the inertial member 4 will push against the auxiliary sleeve 63 and transmit this force to the reset sleeve 61, simultaneously causing the reset sleeve 61 to move away from the pointed hole 20. The backward movement of the reset sleeve 61 will also drive the pushing inclined surface 621 on it to work, pushing the sensing ball 5211 out of the limiting hole 511, thereby unlocking the transmission sleeve 3.

[0056] It is understood that in this embodiment, the upper end of the inertial component 4 (i.e., the end near the pen tip) is confined to the lower end face of the auxiliary sleeve 63, and the lower end of the inertial component 4 (i.e., the end near the pen tip 12) is confined to the force-bearing surface 31a of the upper limit boss 31 of the transmission sleeve 3. Therefore, the axial distance between the lower end face of the auxiliary sleeve 63 and the force-bearing surface 31a of the limiting boss 31 is set to be greater than the length of the inertial component 4 itself, and a certain amount of reserved space for movement is provided between them. The reserved space ensures that when the pen holder 2 is swung, the inertial component 4 can obtain sufficient acceleration stroke within the reserved space, thereby effectively generating and transmitting inertial force to drive the transmission sleeve 3. The specific value of the above-mentioned reserved space can be adaptively adjusted by those skilled in the art according to factors such as the mass of the inertial component 4, the required driving stroke, and the overall structural layout, and is not specifically limited here.

[0057] To ensure that the extension 62 of the reset sleeve 61 is precisely aligned with the limiting hole 511 on the guide sleeve 51 during movement and to provide a stable sliding path for it, preventing the extension 62 from shifting radially or getting stuck, a guide groove 512 is provided axially on the outer peripheral wall of the guide sleeve 51. The limiting hole 511 is located at the bottom or on the wall of the guide groove 512. The extension 62 of the reset sleeve 61 extends at least partially into the guide groove 512 and engages with the two side walls of the guide groove 512, thereby achieving a sliding connection with the guide groove 512. This restricts the extension 62 to slide axially within the guide groove 512, ensuring that the pushing slope 621 on the extension 62 maintains the correct relative position with the limiting hole 511 and the sensing ball 5211 during movement, thus accurately executing the unlocking action of ejecting the ball.

[0058] Furthermore, to ensure stable maintenance of the extended pen tip 12 and automatic, rapid retraction after unlocking, the reset assembly 6 also includes a reset spring 64. Specifically, a positioning platform 25 is provided inside the pen barrel 2. The positioning platform 25 can be an annular shoulder on the inner wall of the pen barrel 2 or an independent part fixed to the inner wall. The reset spring 64 is sleeved on the outer periphery of the core rod 11, and one end of the reset spring 64 abuts against the positioning platform 25, while the other end abuts against the limiting surface 31b formed by the end of the limiting boss 31 near the tip hole 20.

[0059] When the user swings the pen holder 2, the inertial component 4 pushes the transmission sleeve 3, causing the pen tip 12 to move towards the tip hole 20. The limiting boss 31 on the transmission sleeve 3 also moves forward. Since the positioning platform 25 is fixed, the forward movement of the limiting boss 31 compresses the return spring 64 located between the limiting surface 31b, thus storing elastic potential energy. At this time, the elastic force generated by the return spring 64 points towards the pen tail, i.e., away from the tip hole 20. The return spring 64 has a tendency to drive the transmission sleeve 3 to retract, but this retraction force is blocked by the locking component 5, i.e., the sensing ball 5211 locked in the limiting hole 511, thus keeping the pen tip 12 in the extended position.

[0060] When the locking component 5 is triggered and unlocked by the reset sleeve 61, i.e., after the sensing ball 5211 is pushed out of the limiting hole 511, the retraction resistance force on the transmission sleeve 3 disappears. At this time, the elastic potential energy stored in the compressed reset spring 64 is released, and the elastic restoring force generated by the reset spring 64 acts directly on the limiting surface 31b of the limiting boss 31, pushing the transmission sleeve 3 to move away from the pointed hole 20. The retraction movement of the transmission sleeve 3 synchronously drives the core rod 11 and the pen tip 12 to retract into the pen barrel 2 until the pen tip 12 is completely retracted into the pointed hole 20.

[0061] It is worth noting that the weights of the transmission sleeve 3 and the inertial component 4, and the stiffness coefficient of the return spring 64, are adapted to each other, and their relative relationship must meet specific mechanical conditions. While specific values ​​are not limited here, those skilled in the art will understand that the design principle is: when the user performs a flicking operation, the inertia embodied by the total mass of the transmission sleeve 3, the inertial component 4, and the pen tip 1 must be sufficient to drive the entire assembly to overcome the preload or compression resistance of the return spring 64, as well as the internal friction of the mechanism, smoothly completing the lead extension stroke and reaching the locked position; simultaneously, after the locking mechanism is released, the elastic force stored and released by the return spring 64 must be sufficient to overcome the internal friction of the mechanism and drive the transmission sleeve 3 to completely retract the inertial component 4 and the pen tip 12 into the tip hole 20. Furthermore, it must be ensured that in the writing state where the pen tip 12 is extended and locked, the static force exerted by the return spring 64 on the transmission sleeve 3, pointing in the retraction direction, will not interfere with the stable engagement of the locking assembly 5.

[0062] In this embodiment, the elastic restoring force provided by the return spring 64 to the transmission sleeve 3 is greater than the component of the inertial element 4's own weight in the axial direction of the pen holder 2. This ensures that regardless of whether the pen is in a normal writing posture, placed horizontally, or inverted, once the locking component 5 is released, the return spring 64 can provide sufficient and stable driving force to overcome the force exerted by the inertial element 4 on the transmission sleeve 3 due to its own weight, and drive the transmission sleeve 3 and the pen refill 1 to smoothly retract into the pen holder 2, so that the pen tip 12 is completely retracted into the tip hole 20.

[0063] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A flick-type lead-out pen, comprising a lead (1) and a pen holder (2), wherein the lead (1) comprises a core rod (11) and a pen tip (12) disposed at one end of the core rod (11), the core rod (11) being housed within the pen holder (2), and the front end of the pen holder (2) having a pointed hole (20) through which the pen tip (12) passes, characterized in that, The flicking-type lead-out pen includes: The transmission sleeve (3), inertial component (4), locking component (5) and reset component (6) are disposed inside the pen holder (2). The transmission sleeve (3) is connected to the core rod (11) and is used to drive the core rod (11) to move axially along the pen holder (2); The inertial component (4) can drive the transmission sleeve (3) to drive the pen tip (12) to extend out of the tip hole (20) according to the swinging action of the pen holder (2) and lock the transmission sleeve (3) through the locking component (5). The reset component (6) is connected to the transmission sleeve (3) and the locking component (5). When the pen holder (2) is in the unlocked position, the reset component (6) can unlock the transmission sleeve (3) and drive the transmission sleeve (3) to drive the pen tip (12) to retract into the tip hole (20).

2. The flicking-type lead-ejector pen according to claim 1, characterized in that, The transmission sleeve (3) is provided with a limiting boss (31), and the side of the limiting boss (31) away from the pointed hole (20) forms a force-bearing surface (31a); when the pen holder (2) is swung, the inertial member (4) can push against the force-bearing surface (31a) under the action of inertia, so that the transmission sleeve (3) moves towards the pointed hole (20).

3. The flicking-type lead-out pen according to claim 2, characterized in that, The inertial component (4) is an inertial spring (41), which is sleeved on the outer periphery of the transmission sleeve (3) and can slide along the axial direction of the transmission sleeve (3).

4. The flicking-type lead-ejector pen according to claim 2, characterized in that, The locking component (5) includes: A guide sleeve (51) is fixed to the inner circumferential wall of the pen holder (2); The movable part (52) is connected to the tail end of the transmission sleeve (3) and passes through the guide sleeve (51). The inner wall of the guide sleeve (51) is provided with a limiting hole (511), and a sensing element (521) is connected to the movable part (52). When the pen tip (12) extends out of the tip hole (20), the sensing element (521) can be partially engaged in the limiting hole (511) to restrict the movement of the movable element (52) relative to the guide sleeve (51), thereby locking the transmission sleeve (3).

5. The flicking-type lead-out pen according to claim 4, characterized in that, The sensing element (521) is a sensing ball (5211). The movable element (52) has a groove (522) along its radial direction. The groove (522) has a first end (522a) and a second end (522b). From the tail end to the front end of the pen holder (2), the height of the second end (522b) is lower than the height of the first end (522a). The second end (522b) has a transition port (5221) that connects to the limiting hole (511). The sensing ball (5211) can move along the inclined groove (522) to the second end (522b) under the action of gravity, and be engaged with the limiting hole (511) through the transition port (5221).

6. The flicking-type lead-out pen according to claim 5, characterized in that, The reset assembly (6) includes a reset sleeve (61), which is slidably connected to the inner wall of the pen holder (2) and located between the movable member (52) and the inertial member (4). The reset sleeve (61) is provided with an extension (62), which forms a pushing slope (621) on the side facing the guide sleeve (51). When the pen holder (2) is in the unlocked position, the reset sleeve (61) can move away from the pointed hole (20) along the axis of the pen holder (2) under the action of gravity, and push the sensing ball (5211) out of the limiting hole (511 through the pushing inclined surface (621), thereby unlocking the transmission sleeve (3).

7. The flicking-type lead-out pen according to claim 6, characterized in that, An auxiliary sleeve (63) is provided at one end of the reset sleeve (61) near the inertial member (4). When the pen holder (2) is swung, the inertial member (4) can push against the auxiliary sleeve (63) under the action of inertia and simultaneously drive the reset sleeve (61) to move away from the pointed hole (20).

8. The flicking-type lead-out pen according to claim 2, characterized in that, The reset assembly (6) further includes a reset spring (64). The pen holder (2) has a positioning platform (25). The reset spring (64) is sleeved on the outer periphery of the core rod (11). The limiting boss (31) forms a limiting surface (31b) at one end near the pointed hole (20). One end of the reset spring (64) abuts against the positioning platform (25), and the other end abuts against the limiting boss (31). When the transmission sleeve (3) moves toward the tip (20), the return spring (64) is compressed; When the transmission sleeve (3) is unlocked, the return spring (64) can generate elastic deformation to push the transmission sleeve (3) to move away from the tip (20).

9. The flicking-type lead-out pen according to claim 8, characterized in that, The elastic restoring force provided by the reset spring (64) to the transmission sleeve (3) is greater than the component of the weight of the inertial element (4) in the axial direction of the pen holder (2).

10. The flicking-type lead-out pen according to claim 6, characterized in that, The inner wall of the pen holder (2) is provided with a positioning protrusion (26), and the reset sleeve (61) can at least partially abut against the positioning protrusion (26) to restrict the movement path of the reset sleeve (61).

11. The flicking-type lead-ejector pen according to claim 6, characterized in that, The guide sleeve (51) has an axially extending guide groove (512), and the limiting hole (511) is located in the guide groove (512); the extension (62) extends at least partially into the guide groove (512) and is slidably connected to the guide groove (512).

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