Pen with tail open type module

Abstract

The invention relates to the field of pens, in particular to a pen with a tail open type module, which comprises a telescopic writing loop bar which is mutually sleeved, the writing loop bar comprises a holding bar and a clamping bar, and the pen is characterized in that a positioning part is arranged at the tail end of the clamping bar; the pen with the module capable of being additionally arranged at the tail further comprises an extension module. And the extension module and the positioning part are detachably mounted. One of the extension module and the positioning part is a bulge, the other one of the extension module and the positioning part is a slot, the bulge is matched with the slot in an inserting manner, and / or the extension module and the positioning part are matched sticky buckles, snap fasteners or magnets. The positioning part is further provided with a magnet or the positioning part has magnetic attraction force, and the extension module is provided with a magnetically-attractable object matched with the magnet or the extension module is a magnetically-attractable object.

Description

Technical Field

[0001] This invention relates to the field of pens, and more particularly to a pen with an open tail module. Background Technology

[0002] With technological breakthroughs, pull-out and retraction methods for the pen core have emerged, such as the twist-lock pen disclosed in 201911218368.4, which demonstrates the convenience of pull-out operation. At the same time, this solution is not only more user-friendly than traditional solutions, but also greatly reduces the length of the pen body, thus freeing up a lot of space for customization at the tail. In today's era of increasingly personalized pursuit, pen tail extension solutions also need new breakthroughs.

[0003] Meanwhile, the lifting design features a strong tactile feel. The initial concept was to provide a seamless operation, but with the development of the times and the increase in personalized needs, providing a more personalized operating experience has become a new track and direction.

[0004] At the same time, the spring force of the lifting mechanism also determines the lifting feel. Everyone has different needs for the force, and how to satisfy the vast majority of consumers and provide an adjustable lifting feel is a new breakthrough required. Summary of the Invention

[0005] The purpose of this invention is to address the problems of existing pens being monotonous, and while some pens have customizable sides, their practicality is poor because side customization can worsen the grip and the limited space on the sides allows for the addition of decorative parts. This invention provides a pen with an open-ended tail module that can be replaced with an extension module in various forms, such as a clip, tactile feedback mechanism, tactile force adjustment mechanism, decorative parts, and recreational DIY tactile features.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: A pen with an open-ended tail module includes a retractable writing sleeve that fits between itself. The writing sleeve includes a grip 1 and a clamping rod 2. The feature is that the tail end of the clamping rod 2 is provided with a positioning part 3.

[0007] The pen, which can have additional modules added to its tail, also includes an extension module 4.

[0008] The extension module 4 and the positioning part 3 are installed in a detachable manner.

[0009] As a preferred embodiment of the present invention, one of the extension module 4 and the positioning part 3 is a protrusion, and the other is a slot, wherein the protrusion is inserted into the slot and / or the extension module 4 and the positioning part 3 are fitted with hooks, snaps or magnets 31.

[0010] As a preferred embodiment of the present invention: the positioning part 3 is further provided with a magnet 31 or the positioning part 3 itself has magnetic attraction, and the extension module 4 is provided with a magnetically attractive object 41 that matches the magnet 31 or the extension module 4 itself is a magnetically attractive object.

[0011] As a preferred embodiment of the present invention: the grip bar 1 and the clamping bar 2 are repositionable telescopic structures, one of the grip bar 1 and the clamping bar 2 is provided with a movable groove 11, and the other is provided with a limiting part 21; the limiting part 21 is movable within the movable groove 11.

[0012] As a preferred embodiment of the present invention, the extension module 4 is further provided with one or more extension attachments 8. The extension attachments 8 can be accessories with different functions or effects, and can be stacked and nested in a nested manner. This results in the extension module 4 having multiple extension attachments 8 with different effects, thereby greatly improving the pen's fun, unique appearance and practicality.

[0013] As a preferred embodiment of the present invention, the extension module 4 and the extension attachment 8 may also include other play functions (such as: rotating bearing ring, damping slider, basketball shooting function, slot machine function, pinball gameplay), science popularization functions (such as: mobile power generation to light up), decompression functions (such as: silicone sculptable dolls, decompression buttons), decorative functions (IP characters, items, etc.), fun functions (such as: hourglasses, etc.), practical functions (such as: timers, stopwatches, mini clocks, anti-loss positioning accessories or magnifying glasses, etc.), personalization functions (such as: stacking modules with personal names to form a unique name tail), or the feel adjustment (sound adjustment) linked to the grip bar as exemplified in this embodiment.

[0014] As a preferred embodiment of the present invention, the clamping rod 2 is further provided with a pen refill holding part 22.

[0015] As a preferred embodiment of the present invention, the positioning part 3 is provided with one or more mounting grooves 33, and the extension module 4 is provided with mounting bosses 42 corresponding to the mounting grooves.

[0016] As a preferred embodiment of the present invention, the positioning part 3 is circular, elliptical, polygonal, curved polygonal or irregular shape.

[0017] As a preferred embodiment of the present invention, the writing sleeve is further provided with an adjusting extension member 24.

[0018] As a preferred embodiment of the present invention, the positioning part 3 is a separate accessory and is mounted on the clamping rod 2.

[0019] As a preferred embodiment of the present invention, one of the extension module 4 and the grip bar 1 is provided with a feedback boss D, and the other is provided with an adjustment module E.

[0020] As a preferred embodiment of the present invention, the feedback boss D and / or the adjustment module E are deformable structures.

[0021] As a preferred embodiment of the present invention, the adjustment module is a continuous protrusion and / or a continuous irregular protrusion, and the feedback protrusion D and the adjustment module E are in contact with each other.

[0022] As a preferred embodiment of the present invention, the adjustment module is provided with a variety of different continuous protrusions and / or continuous irregular protrusions, so that different feedback sensations can be obtained by rotating the adjustment component.

[0023] As a preferred embodiment of the present invention: in order to facilitate the feedback boss D passing through the clamping rod 2, the clamping rod 2 is also provided with a transmission hole 25.

[0024] As a preferred embodiment of the present invention, the extension accessory 4 includes a gear sleeve 4A and a gear module 4B, thereby enabling the gear to reverse its stroke and thus realizing the extension accessory mode of dual gear control for core output / retraction.

[0025] As a preferred embodiment of the present invention, the grip bar 1 has two motion modes: linear up-and-down movement and rotary up-and-down movement.

[0026] The feedback boss D is provided with a feedback engagement boss D1, and the grip 1 is provided with a linear groove 1DA and a rotary groove 1DB.

[0027] The movable range of the linear groove 1DA is greater than that of the rotary groove 1DB; after the linear groove 1DA and the feedback engagement boss D1 are matched, the feedback boss D only follows the grip 1 to move up and down, without any functional constraint relationship.

[0028] After the rotating groove 1DB and the feedback engagement boss D1 are matched, when the grip 1 generates a movement trajectory, whether it is up and down and / or rotational movement, the feedback boss D will follow the movement trajectory of the grip 1. When the grip 1 has rotational up and down movement, the feedback boss D can also follow the grip 1 to rotate up and down.

[0029] The feedback engagement boss D1 can be selected and engaged with one of them according to the user's needs.

[0030] If a rotating groove 1DB is used, the feedback boss D can move left and right within the slot 241 and / or the transmission hole 25. The slot 241 and / or the transmission hole 25 are completely open spaces for the feedback boss D to move.

[0031] If we consider the issue of future openness, we still choose to select the linear groove 1DA; however, if we want the feedback boss D to move linearly up and down, we can limit the feedback boss D by using the slot 241 and / or the transmission hole 25, or we can extend the module 4 to have a corresponding limiting structure, which can also achieve this.

[0032] When using a straight groove 1DA; the extension module 4 can be equipped with a mode switching component DY; the mode switching component DY is fixed to the extension module 4 or the clamping rod 2, and the mode switching component DY is also provided with a switching boss DY1. By changing the degree of contact between the switching boss DY1 and the feedback boss D, the mode switching component D can be used to switch whether the feedback boss D moves linearly up and down or rotates up and down; when the switching boss DY1 contacts the feedback boss D, thus preventing the feedback boss D from moving and only moving linearly up and down, it is a linear motion mode; by moving the mode switching component DY, the switching boss DY1 can be prevented from contacting the feedback boss D, and the feedback boss D can then rotate up and down.

[0033] Compared with existing technologies, the above technical solution has the following beneficial effects: 1. Open tail port, which can integrate various modules; such as: feel adjustment, force adjustment, toy function addition, pen clip function, extended grip function, practical function, personalized function and / or science popularization function addition.

[0034] Second, the extension module at the rear can be adapted to the grip stick. The grip stick passes through the transmission hole and the clamping rod to adapt to the extension module, creating a linkage and producing a brand new and different experience.

[0035] Third, resources are used effectively, reducing waste. The core of a pen is its refill and lead feeding mechanism and the lead itself. By developing a tail port, personalization can be achieved while improving the utilization rate of the pen itself, thereby extending the lifespan of the pen casing. Only a new extension module needs to be developed specifically for this purpose.

[0036] Fourth, an open market: by opening up the design scheme of the extension accessories at the tail port, other manufacturers can produce corresponding extension modules according to our interface specifications, thereby increasing the openness of the market.

[0037] Fifth, in addition to providing force adjustment, it can also provide tactile feedback adjustment; it can even provide play or stress relief attributes.

[0038] VI. Depending on the different principles of the pen's lead-out / lead-back structure, the grip has two different movement modes: linear up-and-down movement and rotary up-and-down movement. To address this, the feedback boss can also be linked according to the different grips. Furthermore, when the grip has rotary up-and-down movement, the two different linkage modes of linear up-and-down movement and rotary up-and-down movement can be switched arbitrarily through the mode switching component and the linear groove, resulting in greater openness and playability.

[0039] VII. The flexibility and versatility of the positioning part allows for the addition of more personalized functions on top of the versatility of the extension module. For example, if the positioning part is a separate component and is limited by a buckle, it can be fixed within the clamping rod 2. Since the positioning part itself is movable, the extension module also offers a movable experience. If a bearing is used between the positioning part and the clamping rod, the extension module has a rotational characteristic. If a spherical bearing is used between the positioning part and the clamping rod, the extension module has a 360-degree rotation characteristic. All of these can bring additional user experience and more room for development of possibilities to the extension module. Attached Figure Description

[0040] Figure 1 This is the front view of Embodiment 1 of the present invention.

[0041] Figure 2 This is an axonal view of Embodiment 1 of the present invention.

[0042] Figure 3 This is the front view of Embodiment 2 of the present invention.

[0043] Figure 4 This is an axonal view of Embodiment 2 of the present invention.

[0044] Figure 5 This is a partial cross-sectional schematic diagram of Embodiment 3 of the present invention.

[0045] Figure 6 This is a split diagram of Embodiment 3 of the present invention.

[0046] Figure 7 This is a partial cross-sectional schematic diagram of Embodiment 4 of the present invention.

[0047] Figure 8 This is a split diagram of Embodiment 4 of the present invention.

[0048] Figure 9 This is a partial cross-sectional schematic diagram of Embodiment 5 of the present invention.

[0049] Figure 10 This is a split diagram of Embodiment 5 of the present invention.

[0050] Figure 11 This is an axonal perspective view of Embodiment 6 of the present invention.

[0051] Figure 12 This is a split diagram of Embodiment 6 of the present invention.

[0052] Figure 13 This is a front view full sectional view of Embodiment 7 of the present invention.

[0053] Figure 14 This is a partial split diagram of Embodiment 7 of the present invention.

[0054] Figure 15 This is a top-down exploded view of Embodiment 7 of the present invention.

[0055] Figure 16 These are the front view and left sectional view of Embodiment 8 of the present invention.

[0056] Figure 17 This is a partial split diagram of Embodiment 8 of the present invention.

[0057] Figure 18 These are the front view and left sectional view of Embodiment 9 of the present invention.

[0058] Figure 19 These are the front view and left sectional view of Embodiment 10 of the present invention.

[0059] Figure 20 This is a partial split diagram of Embodiment 10 of the present invention.

[0060] Figure 21 This is a front view full sectional view and a partial enlarged view of Embodiment 11 of the present invention.

[0061] Figure 22 This is an exploded view of Embodiment 11 of the present invention.

[0062] Figure 23 This is a front view full sectional view and a partial enlarged view of Embodiment 12 of the present invention.

[0063] Figure 24 This is a diagram showing the fit between the adjustment module E and the feedback boss D in Embodiment 12 of the present invention.

[0064] Figure 25 These are the front view and left sectional view of Embodiment 13 of the present invention.

[0065] Figure 26 These are the left view and front sectional view of Embodiment 13 of the present invention.

[0066] Figure 27 This is an exploded view of Embodiment 13 of the present invention.

[0067] Figure 28 This is a schematic diagram of the inner rod 2 in Embodiment 13 of the present invention.

[0068] Figure 29 These are the front view and left sectional view of Embodiment 14 of the present invention.

[0069] Figure 30 These are the left view and front sectional view of Embodiment 14 of the present invention.

[0070] Figure 31 This is a partial split diagram of Embodiment 14 of the present invention.

[0071] Figure 32 These are the front view and left sectional view of Embodiment 15 of the present invention.

[0072] Figure 33 This is a partial split diagram of Embodiment 15 of the present invention.

[0073] Figure 34 This is a schematic diagram of the grip bar 1 and extension module 4 from another direction in Embodiment 15 of the present invention.

[0074] Figure label: 1. Grip; 11. Movable groove; 11a. Movable boss; 1DA. Straight groove; 1DB. Rotary groove.

[0075] 2. Clamping rod; 21. Limiting part; 21a. Limiting boss; 22. Pen refill holding part; 23. Limiting boss; 24. Adjustment extension; 241. Slot; 25. Transmission hole; 26. Anti-torsion groove.

[0076] 3. Positioning part; 31. Magnet; 33. Mounting groove; 34. Mounting slope; 36. Module through hole; 37. L-shaped groove; 371. Groove boss.

[0077] 4. Extension module; 41. Magnetic attraction; 42. Mounting boss; 43. Anti-rotation component; 45. Snap-fit ​​boss; 4A. Gear sleeve; 4B. Gear module; 4C. Gear and mating rod; 4g. Pen refill adjustment component; 4g1. Anti-disengagement limit platform; 4h. Adjusting spring.

[0078] 5. Return spring.

[0079] 6. Pen refills.

[0080] 7. Auxiliary spring.

[0081] 8. Extension attachment; 81. Rotating groove.

[0082] A. Reset spring; B. Bearing; B2. Joint spring; D. Feedback boss; D1. Feedback mating boss; DY. Mode switching component; DY1. Switching boss; E. Adjustment module; K. Buckle limit. Detailed Implementation

[0083] The present invention will now be further described with reference to the accompanying drawings. Example 1

[0084] like Figures 1 to 2 The pen shown is an open-ended module at the tail, including retractable writing sleeves that are interlocked with each other. The writing sleeves include a grip 1 and a clamp 2. The pen is characterized in that a positioning part 3 is provided at the tail end of the writing sleeves. The pen with the aforementioned tail section that can be fitted with additional modules also includes an extension module 4.

[0085] The aforementioned extension module 4 and positioning part 3 are installed in a detachable manner.

[0086] One of the aforementioned extension module 4 and positioning part 3 is a protrusion, and the other is a slot, with the protrusion engaging with the slot.

[0087] The aforementioned extension module 4 and positioning part 3 are a matching snap-fit ​​structure.

[0088] A return spring 5 is also provided between the aforementioned grip bar 1 and clamp bar 2.

[0089] The aforementioned grip bar 1 is also provided with a limiting part 21, and the aforementioned clamping bar 2 is also provided with a movable groove 11; the aforementioned limiting part 21 is movable within the movable groove 11.

[0090] The writing sleeve also contains a pen refill 6, which is secured to the end of the clamping rod 2. Example 2

[0091] like Figures 3 to 4 The pen shown is an open-ended module at the tail, comprising retractable writing sleeves that are interlocked with each other. The writing sleeves include a grip 1 and a clamp 2. The pen is characterized in that a positioning part 3 is provided at the tail end of the writing sleeves.

[0092] The pen with the aforementioned tail section that can be fitted with additional modules also includes an extension module 4.

[0093] The aforementioned extension module 4 and positioning part 3 are installed in a detachable manner.

[0094] One of the aforementioned extension module 4 and positioning part 3 is a protrusion, and the other is a slot, with the protrusion engaging with the slot.

[0095] The aforementioned grip bar 1 is also provided with a limiting part 21, and the aforementioned clamping bar 2 is also provided with a movable groove 11; the aforementioned limiting part 21 is movable within the movable groove 11.

[0096] The writing sleeve also contains a pen refill 6, and an auxiliary spring 7 is provided between the grip 1 and the pen refill 6.

[0097] The aforementioned extension module 4 is also provided with an extension attachment 8; the aforementioned extension attachment 8 and the extension accessory 4 are connected by a snap or thread.

[0098] The aforementioned positioning part 3 is also provided with a magnet 31, and the aforementioned extension module 4 itself is a magnetically attracted object 41; the two are magnetically attracted together.

[0099] The positioning part 3 is provided with six mounting slots 33, and the extension module 4 is provided with three corresponding mounting bosses 42; the number of mounting bosses 42 may be less than the number of mounting slots 33. Example 3

[0100] like Figures 5 to 6 The pen shown is based on the above embodiment 2, featuring an open-ended tail module: In this embodiment, the positioning part 3 is a separate component, and the clamping rod 2 is also provided with a pen refill holding part 22; the pen refill 6 is located between the auxiliary spring 7 and the pen refill holding part 22, and a tactile spring 9 is also provided between the pen refill holding part 22 and the positioning part 3.

[0101] The aforementioned pen refill top holding part 22 is a separate component. When writing, it can provide a certain elastic support to the pen refill 6. At other times, it can be used for decompression and play.

[0102] The clamping rod 2 is provided with a limiting boss 23. After the positioning part 3 is inserted into the limiting boss 23, it is not easy to detach from the clamping rod 2. Example 4

[0103] like Figures 7 to 8 The pen shown is based on the above embodiment 2, featuring an open-ended tail module: In this embodiment, the positioning part 3 is a separate component, and the clamping rod 2 is also provided with a pen refill holding part 22; the pen refill 6 is located between the auxiliary spring 7 and the pen refill holding part 22; the positioning part 3 and the clamping rod 2 are threaded together.

[0104] A return spring A is provided between the positioning part 3 and the grip 1. The positioning part 3 can also be used to adjust the elastic force of the return spring A.

[0105] The aforementioned extension module 4 is also provided with an anti-rotation component 43; the aforementioned extension attachment 8 is provided with an anti-rotation groove 81 that matches the anti-rotation component 43.

[0106] The auxiliary spring 7 has a small elastic force and is mainly used to prevent the pen lead 6 from falling when it is retracted; the main spring that actually provides the return force for the grip 1 and the clamp 2 is the return spring A.

[0107] The aforementioned clamp 2 is also provided with an adjusting extension member 24; the aforementioned adjusting extension member 24 is also provided with a slot 241 for accommodating the pen refill top part 22. Example 5

[0108] like Figures 9 to 10 The pen shown is based on embodiment 3, featuring an open-ended tail module. This embodiment adds bearing B.

[0109] The aforementioned positioning part 3 is installed in the bearing B; the aforementioned bearing B is installed in the clamping rod 2 in place of the positioning part 3.

[0110] The aforementioned extension module 4 is also provided with an anti-rotation component 43; the aforementioned extension attachment 8 is provided with an anti-rotation groove 81 that matches the anti-rotation component 43. Example 6

[0111] like Figures 11 to 12 The pen shown is an open-ended module at the tail, comprising retractable writing sleeves that are interlocked with each other. The writing sleeves include a grip 1 and a clamp 2. The pen is characterized in that a positioning part 3 is provided at the tail end of the writing sleeves.

[0112] The pen with the aforementioned tail section that can be fitted with additional modules also includes an extension module 4.

[0113] The aforementioned extension module 4 and positioning part 3 are installed in a detachable manner.

[0114] One of the aforementioned extension module 4 and positioning part 3 is a protrusion, and the other is a slot, with the protrusion engaging with the slot.

[0115] The aforementioned extension module 4 and positioning part 3 are a matching snap-fit ​​structure.

[0116] The aforementioned grip bar 1 is also provided with a limiting part 21, and the aforementioned clamping bar 2 is also provided with a movable groove 11; the aforementioned limiting part 21 is movable within the movable groove 11.

[0117] The writing sleeve also contains a pen refill 6, and an auxiliary spring 7 is provided between the grip 1 and the pen refill 6.

[0118] The aforementioned extension module 4 is also provided with an extension attachment 8; the aforementioned extension attachment 8 and the extension accessory 4 are connected by a snap or thread.

[0119] The aforementioned positioning part 3 is also provided with a magnet 31, and the aforementioned extension module 4 itself is a magnetically attracted object 41; the two are magnetically attracted together.

[0120] The positioning part 3 is provided with six mounting slots 33 and 12 mounting ramps 34, and the extension module 4 is provided with three corresponding mounting bosses 42; the mounting ramps 34 enable quick engagement between the mounting bosses 42 and the mounting slots 33.

[0121] The number of mounting bosses 42 can be less than the number of mounting slots 33.

[0122] The aforementioned positioning part 3 is a separate accessory and is mounted on the clamping rod 2 via a spherical bearing; a spherical spring B2 is also provided between the aforementioned positioning part 3 and the clamping rod 2. Example 7

[0123] like Figures 13 to 15 The pen shown is an open-ended module at the tail, comprising retractable writing sleeves that are interlocked with each other. The writing sleeves include a grip 1 and a clamping rod 2. The pen is characterized in that: a positioning part 3 is provided at the tail end of the writing sleeves; the positioning part 3 and the clamping rod 2 are integrally formed.

[0124] The pen with the aforementioned tail section that can be fitted with additional modules also includes an extension module 4.

[0125] The aforementioned extension module 4 and positioning part 3 are installed in a detachable manner.

[0126] The aforementioned extension module 4 is provided with a slot, and the aforementioned positioning part 3 is provided with a protrusion, which is inserted and engaged with the aforementioned slot.

[0127] The aforementioned grip bar 1 is also provided with a movable groove 11, and the aforementioned clamping bar 2 is also provided with a limiting part 21; the aforementioned limiting part 21 is movable within the movable groove 11.

[0128] The writing sleeve also contains a pen refill 6, and an auxiliary spring 7 is provided between the grip 1 and the pen refill 6.

[0129] The aforementioned positioning part 3 is also provided with a magnet 31, and the aforementioned extension module 4 itself is a magnetically attracted object 41; the two are quickly engaged through magnetic attraction.

[0130] The positioning part 3 is provided with six mounting slots 33 and 12 mounting ramps 34, and the extension module 4 is provided with three corresponding mounting bosses 42; the mounting ramps 34 enable quick engagement between the mounting bosses 42 and the mounting slots 33.

[0131] The pen refill 6 is located between the auxiliary spring 7 and the magnet 31.

[0132] The aforementioned extension module 4 is equipped with an adjustment module E, and the aforementioned grip rod 1 is equipped with a feedback boss D.

[0133] The aforementioned feedback boss D has deformable elasticity.

[0134] The aforementioned feedback boss D and adjustment module E are in contact with each other.

[0135] The aforementioned adjustment module E has continuous protrusions to provide tactile and auditory feedback. Different tactile feedback can be obtained by replacing the extension modules with different tactile feel.

[0136] Depending on the product's positioning, you can get different tactile feedback and different sound experiences. Example 8

[0137] like Figures 16-17 The pen shown is an open-ended module at the tail, comprising retractable writing sleeves that are interlocked with each other. The writing sleeves include a grip 1 and a clamp 2. The pen is characterized in that: the tail end of the writing sleeve is provided with a positioning part 3; the positioning part 3 is a separate component.

[0138] The pen with the aforementioned tail section that can be fitted with additional modules also includes an extension module 4.

[0139] The aforementioned extension module 4 and positioning part 3 are installed in a detachable manner.

[0140] The aforementioned extension module 4 is provided with a slot, and the aforementioned positioning part 3 is provided with a protrusion, which is inserted and engaged with the aforementioned slot.

[0141] The aforementioned grip bar 1 is also provided with a limiting part 21, and the aforementioned clamping bar 2 is also provided with a movable groove 11; the aforementioned limiting part 21 is movable within the movable groove 11.

[0142] The writing sleeve also contains a pen refill 6, and an auxiliary spring 7 is provided between the grip 1 and the pen refill 6.

[0143] The aforementioned positioning part 3 is also provided with a magnet 31, and the aforementioned extension module 4 itself is a magnetically attracted object 41; the two are magnetically attracted together.

[0144] The positioning part 3 is provided with six mounting slots 33, and the extension module 4 is provided with three corresponding mounting bosses 42; the number of mounting bosses 42 may be less than the number of mounting slots 33.

[0145] The aforementioned clamp 2 also has a separate pen refill holding part 22; the aforementioned pen refill 6 is located between the auxiliary spring 7 and the pen refill holding part 22.

[0146] A return spring A is provided between the positioning part 3 and the grip 1. The positioning part 3 can also be used to adjust the elastic force of the return spring A.

[0147] The auxiliary spring 7 has a small elastic force and is mainly used to prevent the pen lead 6 from falling when it is retracted; the main spring that actually provides the return force for the grip 1 and the clamp 2 is the return spring A.

[0148] The aforementioned extension module 4 is also fitted with an extension attachment 8; the extension attachment 8 and the extension accessory 4 are engaged by a snap-fit ​​mechanism.

[0149] The aforementioned extension attachment also features a feedback boss D.

[0150] The aforementioned clamp 2 is equipped with an adjustment module E.

[0151] The aforementioned extension attachment 8 has deformable elasticity.

[0152] The aforementioned feedback boss D and adjustment module E are in contact with each other.

[0153] The aforementioned additional extension 8 is also provided with an anti-torsion boss 82; the aforementioned clamping rod 2 is provided with a corresponding anti-torsion groove 26.

[0154] The positioning part 3 and the clamping rod 2 are connected by a threaded connection, so the positional relationship between the positioning part 3 and the clamping rod 2 can be adjusted by rotating the positioning part 3.

[0155] The positioning part 3 can be indirectly controlled by rotating the extension module 4, thereby changing the force required for the core ejection / retraction operation. In order to better adjust the force required for the core ejection / retraction operation, the anti-torsion groove 26 will be pushed further down, thereby ensuring sufficient movable stroke. Example 9

[0156] like Figure 18 The pen shown is an open-ended module at the tail, comprising retractable writing sleeves that are interlocked with each other. The writing sleeves include a grip 1 and a clamp 2. The pen is characterized in that: the tail end of the writing sleeve is provided with a positioning part 3; the positioning part 3 is a separate component.

[0157] The pen with the aforementioned tail section that can be fitted with additional modules also includes an extension module 4.

[0158] The aforementioned extension module 4 and positioning part 3 are installed in a detachable manner.

[0159] The aforementioned extension module 4 is provided with a slot, and the aforementioned positioning part 3 is provided with a protrusion, which is inserted and engaged with the aforementioned slot.

[0160] The aforementioned grip bar 1 is also provided with a limiting part 21, and the aforementioned clamping bar 2 is also provided with a movable groove 11; the aforementioned limiting part 21 is movable within the movable groove 11.

[0161] The writing sleeve also contains a pen refill 6, and an auxiliary spring 7 is provided between the grip 1 and the pen refill 6.

[0162] The aforementioned positioning part 3 is also provided with a magnet 31, and the aforementioned extension module 4 itself is a magnetically attracted object 41; the two are magnetically attracted together.

[0163] The positioning part 3 is provided with six mounting slots 33, and the extension module 4 is provided with three corresponding mounting bosses 42; the number of mounting bosses 42 may be less than the number of mounting slots 33.

[0164] The aforementioned clamp 2 also has a separate pen refill holding part 22; the aforementioned pen refill 6 is located between the auxiliary spring 7 and the pen refill holding part 22.

[0165] A return spring A is provided between the positioning part 3 and the grip 1. The positioning part 3 can also be used to adjust the elastic force of the return spring A.

[0166] The auxiliary spring 7 has a small elastic force and is mainly used to prevent the pen lead 6 from falling when it is retracted; the main spring that actually provides the return force for the grip 1 and the clamp 2 is the return spring A.

[0167] The aforementioned extension module 4 is also fitted with an extension attachment 8; the extension attachment 8 and the extension accessory 4 are engaged by a snap-fit ​​mechanism.

[0168] The aforementioned extension attachment also features a feedback boss D.

[0169] The aforementioned clamping rod 2 is provided with an adjustment module E; the adjustment module E is ring-shaped; it is sleeved on the outside of the clamping rod 2; it can rotate relative to the clamping rod 2; the adjustment module E is provided with three different sets of continuous protrusions and two silent straight grooves; thus it can provide five different feedback experiences and / or three additional sounds; different feedback experiences and / or sounds can be selected by rotating the adjustment module E.

[0170] The silent straight groove on the left also has a slope with varying heights; this ensures silent operation while providing a certain level of damping feedback.

[0171] The silent straight groove on the right has no elevation difference or slope; thus, it can maintain silent operation while providing the original experience.

[0172] The above-mentioned silent operation is based on the premise that the switching operation scheme for core output and core take-up is itself a silent structure.

[0173] If the switching operation scheme for core output and core take-up is not a silent structure, then the so-called silent operation in this embodiment means that no additional sound is generated.

[0174] The aforementioned extension module 4 has deformable elasticity.

[0175] The aforementioned feedback boss D and adjustment module E are in contact with each other.

[0176] The positioning part 3 and the clamping rod 2 are limited by a buckle limit k to prevent the positioning part 3 from disengaging from the clamping rod 2; however, the positioning part 3 can move downward to a certain extent; the extension module 4 is reset by the return spring A; and also has a press-down rebound decompression function. Example 10

[0177] like Figures 19 to 20 The pen shown is an open-ended module at the tail, comprising retractable writing sleeves that are interlocked with each other. The writing sleeves include a grip 1 and a clamp 2. The pen is characterized in that a positioning part 3 is provided at the tail end of the writing sleeves.

[0178] The pen with the aforementioned tail section that can be fitted with additional modules also includes an extension module 4.

[0179] The aforementioned positioning part 3 is located at the tail of the grip 1.

[0180] The aforementioned extension module 4 is provided with a slot, and the aforementioned positioning part 3 is provided with a protrusion, which is inserted and engaged with the aforementioned slot.

[0181] The writing sleeve also contains a pen refill 6, and an auxiliary spring 7 is provided between the grip 1 and the pen refill 6.

[0182] The clamping rod 2 is also provided with an integrally formed pen refill holding part 22 and a transmission hole 25; the pen refill 6 is located between the auxiliary spring 7 and the pen refill holding part 22.

[0183] The aforementioned grip bar 1 is also provided with a movable groove 11, and the aforementioned clamping bar 2 is also provided with a limiting part 21; the aforementioned limiting part 21 moves within the movable groove 11, thereby preventing the grip bar 1 from easily detaching from the clamping bar 2.

[0184] After the positioning part 3 passes through the transmission hole 25, the extension module 4 and the positioning part 3 are installed by a snap-fit ​​method.

[0185] The aforementioned extension module 4 is also equipped with a feedback boss D.

[0186] The aforementioned clamping rod 2 is provided with an adjustment module E; the adjustment module E is ring-shaped; it is sleeved on the outside of the clamping rod 2; it can rotate relative to the clamping rod 2; the adjustment module E is provided with three different sets of continuous protrusions; thereby providing three different feedback experiences and / or sounds; different feedback experiences and / or sounds can be selected by rotating the adjustment module E.

[0187] The aforementioned extension module 4 has deformable elasticity.

[0188] The aforementioned feedback boss D and adjustment module E are in contact with each other.

[0189] The extension module 4 and the grip 1 are directly engaged and fixed. When the grip 1 moves, the extension module will move accordingly, thereby providing different feedback experiences and / or sounds when the core is being released or retrieved. Example 11

[0190] like Figures 21 to 22 The pen shown is an open-ended module at the tail, comprising retractable writing sleeves that are interlocked with each other. The writing sleeves include a grip 1 and a clamp 2. The pen is characterized in that: the tail end of the writing sleeve is provided with a positioning part 3; the positioning part 3 is a separate component.

[0191] The positioning part 3 and the clamping rod 2 are threaded together.

[0192] The pen with the aforementioned tail section that can be fitted with additional modules also includes an extension module 4.

[0193] The writing sleeve also contains a pen refill 6, and an auxiliary spring 7 is provided between the grip 1 and the pen refill 6.

[0194] The aforementioned positioning part 3 is also provided with a magnet 31, and the aforementioned extension module 4 itself is a magnetically attracted object 41; the two are magnetically attracted together.

[0195] The positioning part 3 is provided with six mounting slots 33, and the extension module 4 is provided with three corresponding mounting bosses 42; the number of mounting bosses 42 may be less than the number of mounting slots 33.

[0196] The aforementioned clamp 2 also has a separate pen refill holding part 22; the aforementioned pen refill 6 is located between the auxiliary spring 7 and the pen refill holding part 22.

[0197] A return spring A is provided between the positioning part 3 and the grip 1. The positioning part 3 can also be used to adjust the elastic force of the return spring A.

[0198] The auxiliary spring 7 has a small elastic force and is mainly used to prevent the pen lead 6 from falling when it is retracted; the main spring that actually provides the return force for the grip 1 and the clamp 2 is the return spring A.

[0199] The clamping rod 2 is also provided with an adjusting extension member 24; the adjusting extension member 24 and the grip rod 1 are also provided with a slot 241 for accommodating the pen refill top part 22; the adjusting extension member 24 is located at the lower end of the positioning part 3.

[0200] The aforementioned grip bar 1 is also equipped with an independent adjustment module E.

[0201] A module through hole 36 is provided between the positioning part 3 and the magnet 31; the adjustment module E passes through the module through hole 36 and is engaged with the handle 1.

[0202] The outer surface of the aforementioned adjustment module E is provided with continuous annular irregular grooves.

[0203] The aforementioned extension module 4 is also equipped with three feedback bosses D.

[0204] The aforementioned feedback boss D has deformable elasticity.

[0205] The aforementioned feedback boss D and adjustment module E are in contact with each other.

[0206] The aforementioned adjustment module E and the grip 1 are directly engaged and fixed. When the grip 1 moves, the adjustment module E will move accordingly, thereby providing different feedback experiences and / or sounds when the core is being released or retrieved.

[0207] The aforementioned extension module 4 has a hexagonal exterior, which facilitates the rotation of the extension module 4 and affects the positioning part 3. This indirectly causes the adjustment extension 24 to move up and down, thereby adjusting the force required for the operation of core delivery or core retraction. Example 12

[0208] like Figures 23 to 24 The pen shown is an open-ended module at the tail, comprising retractable writing sleeves that are interlocked with each other. The writing sleeves include a grip 1 and a clamp 2. The pen is characterized in that: the tail end of the writing sleeve is provided with a positioning part 3; the positioning part 3 is a separate component.

[0209] The positioning part 3 and the clamping rod 2 are threaded together.

[0210] The pen with the aforementioned tail section that can be fitted with additional modules also includes an extension module 4.

[0211] The aforementioned extension module 4 is also provided with an extension attachment; the aforementioned extension attachment 8 and the extension module 4 are engaged with each other.

[0212] The writing sleeve also contains a pen refill 6, and an auxiliary spring 7 is provided between the grip 1 and the pen refill 6.

[0213] The aforementioned positioning part 3 is also provided with a magnet 31, and the aforementioned extension module 4 itself is a magnetically attracted object 41; the two are magnetically attracted together.

[0214] The positioning part 3 is provided with six mounting slots 33, and the extension module 4 is provided with three corresponding mounting bosses 42; the number of mounting bosses 42 may be less than the number of mounting slots 33.

[0215] The aforementioned clamp 2 also has a separate pen refill holding part 22; the aforementioned pen refill 6 is located between the auxiliary spring 7 and the pen refill holding part 22.

[0216] A return spring A is provided between the positioning part 3 and the grip 1. The positioning part 3 can also be used to adjust the elastic force of the return spring A.

[0217] The auxiliary spring 7 has a small elastic force and is mainly used to prevent the pen lead 6 from falling when it is retracted; the main spring that actually provides the return force for the grip 1 and the clamp 2 is the return spring A.

[0218] The clamping rod 2 is also provided with an adjusting extension member 24; the adjusting extension member 24 and the grip rod 1 are also provided with a slot 241 for accommodating the pen refill top part 22; the adjusting extension member 24 is located at the lower end of the positioning part 3.

[0219] The aforementioned grip bar 1 is also equipped with an independent adjustment module E.

[0220] A module through hole 36 is provided between the positioning part 3 and the magnet 31; the adjustment module E passes through the module through hole 36 and is engaged with the handle 1.

[0221] The aforementioned extension attachment also features three feedback bosses D.

[0222] The aforementioned feedback boss D has deformable elasticity.

[0223] The aforementioned feedback boss D and adjustment module E are in contact with each other.

[0224] The outer surface of the aforementioned adjustment module E is provided with three continuous irregular grooves and three continuous straight grooves. The continuous straight grooves serve a silent function, so that no additional sound is emitted when the feedback boss D moves into the continuous straight grooves. By adjusting the height difference of the continuous straight grooves, different damping feedback can also be provided.

[0225] The aforementioned adjustment module E and the grip 1 are directly engaged and fixed. When the grip 1 moves, the adjustment module E will move accordingly, thereby providing different feedback experiences and / or sounds when the core is being released or retrieved.

[0226] The aforementioned extension module 4 has a hexagonal exterior, which facilitates the rotation of the extension module 4 and affects the positioning part 3. This indirectly causes the adjustment extension 24 to move up and down, thereby adjusting the force required for the operation of core delivery or core retraction. Example 13

[0227] like Figures 25 to 28 The pen shown is an open-ended module at the tail, comprising retractable writing sleeves that are interlocked with each other. The writing sleeves include a grip 1 and a clamp 2. The pen is characterized in that: the tail end of the writing sleeve is provided with a positioning part 3; the positioning part 3 is a separate component.

[0228] The positioning part 3 and the clamping rod 2 are threaded together.

[0229] The pen with the aforementioned tail section that can be fitted with additional modules also includes an extension module 4.

[0230] The aforementioned extension accessory 4 includes a gear sleeve 4A and a gear module 4B; the gear sleeve 4A is engaged and sleeved within the positioning part 3.

[0231] The writing sleeve also contains a pen refill 6, and an auxiliary spring 7 is provided between the grip 1 and the pen refill 6.

[0232] The aforementioned clamp 2 also has a separate pen refill holding part 22; the aforementioned pen refill 6 is located between the auxiliary spring 7 and the pen refill holding part 22.

[0233] The aforementioned gear module 4B is engaged and fixed within the pen refill top holding part 22.

[0234] A return spring A is provided between the positioning part 3 and the grip 1. The positioning part 3 can also be used to adjust the elastic force of the return spring A.

[0235] The auxiliary spring 7 has a small elastic force and is mainly used to prevent the pen lead 6 from falling when it is retracted; the main spring that actually provides the return force for the grip 1 and the clamp 2 is the return spring A.

[0236] The lower end of the positioning part 3 is also provided with an adjustment extension 24; the adjustment extension 24 and the grip 1 are also provided with a slot 241 for accommodating the pen refill top part 22.

[0237] The aforementioned grip lever 1 is also provided with a feedback boss D and a tooth and a mating rod 4c.

[0238] The aforementioned feedback boss D has deformable elasticity.

[0239] The aforementioned feedback boss D and adjustment module E are in contact with each other.

[0240] The aforementioned extension accessory 4 also includes an extension attachment; the extension attachment and the extension accessory 4 are engaged and fixed; the extension attachment can rotate relative to the extension accessory 4; the outer surface of the extension attachment is provided with three continuous irregular grooves and three continuous straight grooves, the continuous straight grooves are for noise reduction, and no additional sound will be emitted when the feedback boss D moves to the continuous straight grooves; by adjusting the height difference of the continuous straight grooves, different damping feedback can also be provided.

[0241] By rotating the extension attachment, you can switch between different tactile feedback modes and different sound feedback modes; including the option to switch to a silent tactile feedback mode.

[0242] The aforementioned tooth and module 4B are specifically located between the tooth and sleeve rod 4A and the tooth and mating rod 4c.

[0243] The aforementioned teeth and module 4B are also equipped with rotatable gears.

[0244] The positioning part 3 and the clamping rod 2 are limited by a buckle limit k to prevent the positioning part 3 from disengaging from the clamping rod 2; however, the positioning part 3 can move downward to a certain extent; the extension module 4 is then connected by a reset spring 4; and also has a press-down rebound decompression function; at the same time, through the tooth and sleeve rod 4A, the tooth and module 4B and the tooth and mating rod 4c, and through the press-down extension accessory 4, the downward stroke of the tooth and sleeve rod 4A can be converted into the upward stroke of the tooth and mating rod 4c by the gear on the tooth and module 4B, thereby realizing the function of pressing down to control the core delivery and core retraction. Example 14

[0245] like Figures 29 to 31 The pen shown is an open-ended module at the tail, comprising retractable writing sleeves that are interlocked with each other. The writing sleeves include a grip 1 and a clamp 2. The pen is characterized in that a positioning part 3 is provided at the tail end of the writing sleeves.

[0246] The pen with the aforementioned tail section that can be fitted with additional modules also includes an extension module 4.

[0247] The positioning part 3 is also provided with an L-shaped groove 37; the extension module 4 is provided with a snap-fit ​​boss 45; and the L-shaped groove 37 is also provided with a groove boss 371.

[0248] After the aforementioned snap-fit ​​boss 45 enters the bottom of the L-shaped groove 37, it is rotated at a certain angle, and then the snap-fit ​​boss 45 is snapped into the groove boss 371. Through the snap-fit ​​boss 45 and the L-shaped groove 37, a detachable fit is formed between the aforementioned extension module 4 and the positioning part 3.

[0249] The aforementioned grip bar 1 is also provided with a limiting part 21, and the aforementioned clamping bar 2 is also provided with a movable groove 11; the aforementioned limiting part 21 is movable within the movable groove 11.

[0250] The writing sleeve also contains a pen refill 6, which is secured to the end of the clamping rod 2.

[0251] A return spring 5 is also provided between the front end of the grip 1 and the front end of the pen refill 6.

[0252] The aforementioned extension module 4 also includes a pen refill adjustment component 4g and an adjustment spring 4h; the pen refill adjustment component 4g is located between the pen refill 6 and the adjustment spring 4h; the adjustment spring 4h is located between the pen refill adjustment component 4g and the bottom of the extension module 4.

[0253] By using pen refill adjustment parts of different lengths (4g), it is possible to adapt to pen refills of different lengths (6g).

[0254] By using adjustable springs with different elasticity (4h), different elasticity feedback can be provided during writing.

[0255] If the adjusting spring 4h is not used, the pen refill adjusting part 4g can be directly integrated with the extension module 4.

[0256] To improve the user experience, the tail of the pen refill adjustment piece 4g is also equipped with an anti-detachment limiting platform 4g1; thereby reducing the problem of the pen refill adjustment piece 4g easily falling off when replacing the pen refill 6 and the pen refill adjustment piece 4g. Example 15

[0257] like Figures 32 to 34 The pen shown is an open-ended module at the tail, comprising retractable writing sleeves that are interlocked with each other. The writing sleeves include a grip 1 and a clamping rod 2. The pen is characterized in that: a positioning part 3 is provided at the tail end of the writing sleeves; the positioning part 3 and the clamping rod 2 are integrally formed.

[0258] The pen with the aforementioned tail section that can be fitted with additional modules also includes an extension module 4.

[0259] The aforementioned extension module 4 and positioning part 3 are installed in a detachable manner.

[0260] The aforementioned extension module 4 is provided with a slot, and the aforementioned positioning part 3 is provided with a protrusion, which is inserted and engaged with the aforementioned slot.

[0261] The aforementioned grip bar 1 is also provided with a movable boss 11a, and the aforementioned clamping bar 2 is also provided with a limiting boss 21a; the aforementioned limiting boss 21a restricts the range of motion of the movable boss 11a; thereby constraining the range of motion between the grip bar 1 and the clamping bar 2.

[0262] The writing sleeve also contains a pen refill 6, and an auxiliary spring 7 is provided between the grip 1 and the pen refill 6.

[0263] The aforementioned positioning part 3 is also provided with a magnet 31, and the aforementioned extension module 4 itself is a magnetically attracted object 41; the two are quickly engaged through magnetic attraction.

[0264] The positioning part 3 is provided with six mounting slots 33 and 12 mounting ramps 34, and the extension module 4 is provided with six corresponding mounting bosses 42; the mounting ramps 34 enable quick engagement between the mounting bosses 42 and the mounting slots 33.

[0265] The pen refill 6 is located between the auxiliary spring 7 and the magnet 31.

[0266] The aforementioned clamping rod 2 is also provided with a transmission hole 25.

[0267] The aforementioned extension module 4 is provided with an adjustment module E, and the aforementioned grip rod 1 is provided with a feedback boss D; the aforementioned feedback boss D passes through the transmission hole 25 and cooperates with the extension module 4.

[0268] The aforementioned feedback boss D is an independent accessory; it is installed separately on the grip bar 1.

[0269] Considering that the grip 1 has two motion modes: linear up-and-down movement and rotary up-and-down movement; the above-mentioned feedback boss D is provided with a feedback engagement boss D1, and the above-mentioned grip 1 is provided with a linear groove 1DA and a rotary groove 1DB.

[0270] The movable range of the linear groove 1DA is greater than that of the rotary groove 1DB; after the linear groove 1DA and the feedback engagement boss D1 are matched, the feedback boss D only moves up and down with the grip 1, without any functional constraint relationship.

[0271] After the aforementioned rotating groove 1DB and feedback engagement boss D1 are matched, when the grip 1 generates a motion trajectory, whether it is up-and-down and / or rotational motion, the feedback boss D will follow the motion trajectory of the grip 1.

[0272] The aforementioned feedback engagement boss D1 can be selected and engaged with one of them according to the user's needs.

[0273] If a rotating groove 1DB is used, the feedback boss D can move left and right within the transmission hole 25, and the transmission hole 25 is a completely open space for the feedback boss D to move.

[0274] The aforementioned extension module 4 can be equipped with a mode switching component DY. The mode switching component DY is fixed to the extension module 4 or the clamping rod 2. The mode switching component DY is also provided with a switching boss DY1. By changing the degree of contact between the switching boss DY1 and the feedback boss D, the mode switching component D can be used to switch whether the feedback boss D moves linearly up and down or rotates up and down. When the switching boss DY1 contacts the feedback boss D, thus preventing the feedback boss D from moving and only moving linearly up and down, it is in linear motion mode. By moving the mode switching component DY, the switching boss DY1 can be prevented from contacting the feedback boss D.

[0275] When using the linear groove 1DA, the mode can be switched between linear up / down or rotational up / down using the mode switching component DY.

[0276] Then the feedback boss D can rotate and move up and down.

[0277] The aforementioned feedback boss D and adjustment module E are in contact with each other.

[0278] The ends of the feedback boss D and the adjustment module E that are in contact have deformable elastic force.

[0279] The aforementioned adjustment module E has continuous protrusions to provide tactile and auditory feedback. Different tactile feedback can be obtained by replacing the extension modules with different tactile feel.

[0280] Depending on the product's positioning, you can get different tactile feedback and different sound experiences.

[0281] Supplementary Explanation In this exemplary embodiment, the pen with adjustable operating force proposed in this invention is described using a pull-type pen as an example. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes may be made to the following specific embodiments to apply the relevant designs of this invention to other types of pens or other devices; these changes are still within the scope of the principle of the pen with adjustable operating force proposed in this invention.

Claims

1. A pen with an open tail module, comprising a retractable writing sleeve rod that is mutually sleeved, the writing sleeve rod comprising a grip rod 1 and a clamp rod 2, characterized in that: The tail end of the writing sleeve rod is provided with a positioning portion 3; the positioning portion 3 is specifically provided at the tail end of the clamping rod 2 or the gripping rod 1; The pen with a module that can be added to the tail also includes an extension module 4; The extension module 4 and the positioning portion 3 are installed in a detachable manner.

2. The pen with an open tail module according to claim 1, characterized in that: One of the extension module 4 and the positioning part 3 is a protrusion, and the other is a slot. The protrusion is plugged into the slot and / or the extension module 4 and the positioning part 3 are matching Velcro, snaps or magnets 31.

3. The pen with an open tail module according to claim 1, characterized in that: The positioning portion 3 is further provided with a magnet 31 or the positioning portion 3 itself has magnetic attraction, and the extension module 4 is provided with a magnetically attractable object 41 paired with the magnet 31 or the extension module 4 itself is a magnetically attractable object.

4. The pen with an open tail module according to claim 1, characterized in that: The matching relationship between the grip rod 1 and the clamp rod 2 is a repositionable telescopic structure.

5. The pen with an open tail module according to claim 1, characterized in that: The extension module 4 is also provided with one or more extension attachments 8 .

6. The pen with an open tail module according to claim 1, characterized in that: The clamping rod 2 is further provided with a pen core holding portion 22 .

7. The pen with an open tail module according to claim 1, characterized in that: The positioning portion 3 is provided with one or more mounting grooves 33 , and the extension module 4 is provided with mounting bosses 42 corresponding to the mounting grooves.

8. The pen with an open tail module according to claim 1, characterized in that: The positioning portion 3 is in the shape of a circle, an ellipse, a polygon, a curved polygon or an irregular shape.

9. The pen with an open tail module according to claim 1, characterized in that: An adjusting extension piece 24 is also provided inside the writing sleeve rod.

10. The pen with an open tail module according to claim 1, characterized in that: The positioning portion 3 is in the form of a separate accessory and is mounted on the clamping rod 2 .

11. The pen with an open tail module according to claim 1, characterized in that: A feedback boss D is disposed on one of the extension module 4 and the handle 1 , and an adjustment module E is disposed on the other one.

12. The pen with an open tail module according to claim 11, characterized in that: The feedback boss D and / or the adjustment module E are deformable structures.

13. The pen with an open tail module according to claim 11, characterized in that: The adjustment module is a continuous groove, a continuous protrusion, a continuous irregular groove and / or a continuous irregular protrusion.

14. The pen with an open tail module according to claim 11, characterized in that: The adjustment module is provided with a plurality of different continuous protrusions and / or continuous irregular protrusions at the same time, and different feedback senses can be obtained by rotating the adjustment member.

15. The pen with an open tail module according to claim 1, characterized in that: One of the gripping rod 1 and the clamping rod 2 is provided with a movable boss 11 a , and the other one is also provided with a limiting boss 21 a .

16. The pen with an open tail module according to claim 1, characterized in that: A limiting portion 21 is further provided on one of the gripping rod 1 and the clamping rod 2 .

17. The pen with an open tail module according to claim 1, characterized in that: The clamping rod 2 is also provided with a transmission hole 25 .

18. The pen with an open tail module according to claim 1, characterized in that: The extension accessory 4 includes a gear sleeve rod 4A and a gear module 4B.

19. The pen with an open tail module according to claim 11, characterized in that: The grip bar 1 is provided with a linear groove 1DA and / or a rotation groove 1DB; the feedback boss D is also provided with a feedback matching boss D1.

20. The pen with an open tail module according to claim 19, characterized in that: The extension module 4 or the clamping rod 2 is also provided with a mode switching member DY.

21. The pen with an open tail module according to claim 1, characterized in that: The matching relationship between the positioning portion 3 and the clamping rod 2 has at least the following characteristics: The positioning portion 3 and the clamping rod 2 are integrally formed; The positioning portion 3 and the clamping rod 2 are installed in a detachable manner; The positioning part 3 and the clamping rod 2 are movable limited by a buckle limiter K, and the positioning part 3 is prevented from being separated from the clamping rod 2 while being relatively movable between the clamping rods 2; The positioning portion 3 and the clamping rod 2 are installed via a bearing; The positioning portion 3 and the clamping rod 2 are installed via a joint bearing.

Images