Pressing type writing tool

Abstract

The invention provides a pressing type writing tool. The pressing type writing tool comprises a penholder; the first writing body is arranged in the pen holder; the at least one second writing body is arranged in the pen holder; a wheel pressing operation mechanism configured such that when the wheel pressing operation mechanism is operated for the first time, the wheel pressing operation mechanism can cause the first writing body to protrude from a lower end of the barrel; when the wheel pressing operation mechanism is operated for the second time, the wheel pressing operation mechanism can enable the second writing body to protrude from the lower end of the pen holder. According to the pressing type writing tool, the scheme of one-hand operation or one-key color changing is provided in the refill switching mode.

Description

Technical Field

[0001] This patent relates to the field of stationery technology, and in particular to a push-type writing tool. Background Art

[0002] Most of the multi-core pens (multi-function pens, multi-functional pens) currently available on the market adopt a multi-button structure, that is, the rear end of each pen core is connected to a push-down slide bar of the corresponding color, and the corresponding pen core is locked in the state where the pen tip is extended by pressing forward. When it is necessary to switch the pen core, for example, by pressing the corresponding push-down slide bar, the former locking state is released and restored before the corresponding pen core is locked, so as to switch the pen core. In addition to this type of multi-button core pen, there is also a rotary multi-function pen, which can switch and recycle the pen core by twisting the upper and lower parts.

[0003] However, during the writing process, the above-mentioned multi-core pens cause many inconveniences. When switching the refills of a multi-core pen with a multi-button structure, the user needs to shift his gaze from the paper to the end of the multi-core pen to find the corresponding button to press. This process is inconvenient for the continuity of writing. The rotary multi-function pen needs to control the torque when switching the refills. If one-handed switching is adopted: using the index finger and middle finger to twist the pen incorrectly, there is a problem of easy switching errors and difficulty in use. If two-handed switching is adopted, it is even more inconvenient. Therefore, in terms of the refill switching method, a multi-core pen that can be operated with one hand or change color with one button is needed. Summary of the invention

[0004] In order to achieve one-handed operation of multi-core pens or one-key color change, this patent provides the following technical solutions:

[0005] A push-type writing tool comprises: a pen barrel; a first writing body arranged in the pen barrel; at least one second writing body arranged in the pen barrel; and a rotary pressing operating mechanism, which is configured as follows: when the rotary pressing operating mechanism is operated for the first time, the rotary pressing operating mechanism can cause the first writing body to protrude from the lower end of the pen barrel; when the rotary pressing operating mechanism is operated for the second time, the rotary pressing operating mechanism can cause the second writing body to protrude from the lower end of the pen barrel.

[0006] Furthermore, the first writing body includes a first writing body biasing member, and the first writing body biasing member applies an upward force to the first writing body; when the wheeled pressing operating mechanism is operated for the second time, the wheeled pressing operating mechanism can release the protrusion of the first writing body.

[0007] Furthermore, the wheeled pressing operating mechanism includes a pressing rod protruding upward from the pen shaft, and the wheeled pressing operating mechanism is operated by the pressing rod. When the pressing rod is operated, it can slide along the up and down directions of the pen shaft, and the pressing rod includes a pressing rod biasing piece, and the pressing rod biasing piece applies an upward force to the pressing rod.

[0008] Furthermore, the wheeled pressing operation mechanism also includes an eccentric rotating cam, and the pressing rod can be selectively operationally coupled or operationally decoupled with the first writing body and the second writing body through the eccentric rotating cam.

[0009] Furthermore, when the wheel-driven pressing operating mechanism is operated for the second time, the eccentric rotating cam rotates, thereby realizing a transition from a state in which the pressing rod is operationally coupled with the first writing body to a state in which the pressing rod is operationally coupled with the second writing body.

[0010] Furthermore, the eccentric rotating cam is arranged on the pressing rod, and the eccentric rotating cam can slide along the up and down directions of the pen shaft along with the pressing rod, and the eccentric rotating cam can rotate relative to the pressing rod.

[0011] Furthermore, a rotation driving track is provided in the push-type writing tool, and a rotation force-carrying portion cooperating with the rotation track is provided on the eccentric rotating cam. When the eccentric rotating cam slides along the up and down directions of the pen shaft, the rotation force-carrying portion interacts with the rotation driving track to make the eccentric rotating cam rotate a specific angle.

[0012] Furthermore, the first writing body includes a first pressing part, the second writing body includes a second pressing part, and the eccentric rotating cam has the following circumferentially: an eccentric coupling protrusion, when the coupling protrusion is located above the first pressing part or the second pressing part, the up-and-down sliding of the pressing rod can drive the first pressing part or the second pressing part to slide up-and-down through the coupling protrusion, thereby realizing operational coupling; the coupling protrusion is radially protruding or axially protruding relative to the eccentric rotating cam body; or an eccentric decoupling groove, when the decoupling groove is located above the first pressing part or the second pressing part, the up-and-down sliding of the pressing rod can avoid driving the first pressing part or the second pressing part to slide up-and-down through the decoupling groove, thereby realizing operational decoupling.

[0013] Furthermore, when the pressing rod is operated to make the first writing body protrude from the lower end of the pen shaft, the first pressing portion can interact with the retaining portion on the pen shaft or the second pressing portion, so that the first writing body or the second writing body remains protruding from the lower end of the pen shaft; the retaining portion includes a first opening corresponding to the first pressing portion, or the retaining portion includes a locking structure inside the pen shaft.

[0014] Furthermore, the first pressing portion includes a first locking portion and a first locking portion biasing member, and the first locking portion biasing member applies a radially outward force to the first locking portion so that the first locking portion can radially extend from the first opening or be locked in the concave-convex locking structure; when the first locking portion is operated radially inward, the first writing body is released from the protrusion of the pen shaft.

[0015] Furthermore, the first pressing part includes a first rotation action surface and a first locking part. When the eccentric rotating cam presses the first pressing part downward, the first rotation action surface is rotated by the eccentric rotating cam or the inside of the pen barrel, and the first locking part can radially extend from the first opening or be locked in the concave-convex locking structure.

[0016] Furthermore, the second pressing part includes a disturbance-acting part. When the second pressing part moves downward, the disturbance-acting part disturbs the first stopping part of the first pressing part, thereby releasing the first writing body from protruding from the pen shaft.

[0017] This patent has the following beneficial effects:

[0018] The multi-core pen of the present invention can be operated by pressing a single button, just like the widely used gel pens on the market, so as to realize one-handed operation. Consumers who use the multi-core pen for the first time do not need to learn the operation method, which is the most convenient. The multi-core pen with a special structure provided by the present invention adopts an interactive mode of pressing once to switch to the next color. For a three-color pen, the user only needs to consider pressing once or twice in succession to switch to the required pen core; for a two-color pen, one-button switching can be realized. The switching process can be easily switched with one hand, and the user does not need to divert his eyes, which helps consumers focus on creation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of this patent, the following is a brief introduction to the drawings required for use in the embodiment. It should be understood that the following drawings only show certain embodiments of this patent and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1a It is the front view of Example 1;

[0021] Figure 1b is a side view of Example 1;

[0022] Figure 2a for Figure 1a A half-section diagram of Example 1;

[0023] Figure 2b for Figure 2a A partial enlarged view of the middle part;

[0024] Figure 3 It is an exploded view of Example 1;

[0025] Figure 4a This is a front view of the upper front portion of the embodiment 1 when pressing;

[0026] Figure 4b A second viewing angle view of the upper front portion of Example 1 when pressing;

[0027] Figure 4c A third viewing angle view of the upper front portion of Example 1 when pressed;

[0028] Figure 5 This is a schematic diagram of the internal structure of the upper front pressing part of Example 1;

[0029] Figure 6a for Figure 5 Half section of the upper front part of the middle press;

[0030] Figure 6b for Figure 6a A partial enlarged view of part B in the middle;

[0031] Figure 7a It is a cross-sectional view of Example 1 in a pressed state;

[0032] Figure 7b The main view of the upper part in the pressed state;

[0033] Figure 7c for Figure 7b Half-section of

[0034] Figure 8 This is a front view of the pressing rod of Example 1;

[0035] Figure 9a This is a first-view stereoscopic view of the push member of Example 1;

[0036] Figure 9b This is a stereoscopic view of the push member of Example 1 from a second viewing angle;

[0037] Fig.9c This is a front view of the push member of Example 1;

[0038] Figure 9d for Fig.9c A cross-sectional view of the middle push-position member;

[0039] Fig.10a This is a first-view stereoscopic image of the upper limit cap of Example 1;

[0040] Fig.10b for Fig.10a Cross-section of the middle and upper limit cap;

[0041] Fig.10c This is a second-angle stereoscopic view of the upper limit cap of Example 1;

[0042] Fig.11a This is a first-view stereoscopic image of the upper pen case of Example 1;

[0043] Fig.11b for Fig.11a Cross-section of the upper-middle pen case;

[0044] Fig.11c This is a second perspective perspective view of the pen case of Example 1;

[0045] Fig.12a It is a schematic diagram of the three-dimensional structure of the upper spring limiter of Example 1;

[0046] Figure 12b for Fig.12a A half-section view of the middle and upper spring stopper;

[0047] Fig.13a This is a first-view stereoscopic view of the plug assembly of Example 1;

[0048] Fig.13b for Fig.13a A cross-sectional view of the plug assembly;

[0049] Fig.13c This is a stereoscopic view of the plug assembly of Example 1 from a second viewing angle;

[0050] Fig.13d This is a third-angle perspective view of the plug assembly of Example 1;

[0051] Fig.13e is a top view of the plug assembly of Example 1;

[0052] Fig.13f It is a bottom view of the plug assembly of Example 1;

[0053] Fig.14a This is a front view of the lower spring stopper of Example 1;

[0054] Fig.14b It is a side view of the lower spring stopper of Example 1;

[0055] Fig.14c It is a top view of the spring stopper of Example 1;

[0056] Fig.14d This is a schematic diagram of the three-dimensional structure of the lower spring limiter of Example 1;

[0057] Fig.15a This is a schematic diagram of the internal three-dimensional structure of the upper front pressing part of Example 1;

[0058] Fig.15b This is a schematic diagram of the internal three-dimensional structure of the upper part of the first pressing state of Example 1;

[0059] Fig.15c This is a schematic diagram of the internal three-dimensional structure of the upper part of the second pressing state of Example 1;

[0060] Fig.15d This is a schematic diagram of the internal three-dimensional structure of the upper part of the third pressing state of Example 1;

[0061] Fig.15e This is a schematic diagram of the internal three-dimensional structure of the upper part of the fourth pressing state of Example 1;

[0062] Fig.15f This is a schematic diagram of the internal three-dimensional structure of the upper rear portion after pressing in Example 1;

[0063] Fig.16a This is a first-angle stereoscopic image of the pressing part of Example 1 after being pressed;

[0064] Fig.16b This is a stereoscopic image of the pressing part of Example 1 from a second viewing angle;

[0065] Fig.16c This is a stereoscopic image of the pressing part of Example 1 from a third viewing angle;

[0066] Fig.16d This is a stereoscopic image of the pressing part of Example 1 from a fourth viewing angle;

[0067] Fig.17a It is a three-dimensional diagram of the upper structure of Example 2;

[0068] Fig.17b It is a cross-sectional view of the upper part of the structure of Example 2;

[0069] Fig.18a This is a cross-sectional view of the pen holder in Example 3;

[0070] Fig.18b This is a half-section view of the pen holder of Example 3;

[0071] Fig.18c This is a schematic diagram of the assembly relationship of the pen holder, the push member, and the plug assembly in Example 3;

[0072] Fig.18d This is a stereoscopic diagram of the plug assembly of Example 3;

[0073] Fig.19a A half-section view of the upper front portion of Example 3 after pressing;

[0074] Fig.19b for Fig.19a Enlarged view of middle C;

[0075] Fig.19c A half-section view of the upper part after pressing of Example 3;

[0076] Fig.19d for Fig.19c Enlarged view of middle C;

[0077] Fig. 20 This is a perspective view of the internal structure of the upper front portion of Example 4;

[0078] Fig.21a This is a perspective view of the internal structure of the middle part of Example 5 after pressing;

[0079] Figure 21b This is a three-dimensional diagram of the plug assembly of Example 5;

[0080] Fig.21c is a cross-sectional view of the middle portion of Example 5 after pressing;

[0081] Fig.21d for Fig.21c Enlarged view of the middle D part;

[0082] Fig.21e This is a cross-sectional view of the middle part of Example 5 before pressing.

[0083] The reference numerals are described as follows:

[0084] 1: Press the component

[0085] 11: Pressing rod

[0086] 111: Press the raised part of the rod

[0087] 12: Push piece

[0088] 121: Upper rotating slope

[0089] 122: Lower rotating slope

[0090] 123: Left side

[0091] 124: Guide surface

[0092] 125: Limiting groove

[0093] 2: Upper limit cap

[0094] 21: Upper limit cap rotating slope

[0095] 22: Vertical surface of upper limit cap

[0096] 23: Extended end of upper limit cap

[0097] 24: Center through hole of upper limit cap

[0098] 25: Concave and convex end of upper limit cap

[0099] 3: Upper pen shell

[0100] 31: Square opening

[0101] 32: Guide rail convex strip

[0102] 33: Upper slot

[0103] 34: Lower slot

[0104] 35: Upper pen shell connection

[0105] 36: Concave and convex end of upper pen shell

[0106] 37: Side press opening

[0107] 38: Raised inner wall

[0108] 381: Raised guide groove

[0109] 382: Raised bottom surface

[0110] 4: Spring

[0111] 5: Upper spring limiter

[0112] 51: Central groove

[0113] 52: Steps

[0114] 6: Plug assembly

[0115] 61: Upper part of the plug

[0116] 611: Inclined surface on the upper part of the plug

[0117] 612: Protrusion on the upper part of the plug

[0118] 613: Inside surface of the upper part of the plug

[0119] 614: Pressing lever on the upper side of the plug

[0120] 62: Leaf spring

[0121] 63: Lower part of the plug

[0122] 631: Lower protrusion of plug

[0123] 632: Lower edge of plug

[0124] 64: Upper teeth inside the plug

[0125] 65: Lower tooth inside the plug

[0126] 67: Plug side

[0127] 671: Plug wing stop surface

[0128] 7: Pen Shell

[0129] 71: Pen shell body

[0130] 711: Lower pen housing raised end

[0131] 72: Pipe sleeve

[0132] 8: Lower spring

[0133] 9: Lower spring limiter

[0134] 91: Extension arm

[0135] 911: Extension arm protrusion

[0136] 10: Refill DETAILED DESCRIPTION

[0137] The detailed features and advantages of this patent are described in detail in the specific implementation method below, and the content is sufficient to enable any technical personnel in this field to understand the technical content of this patent and implement it accordingly. According to the description, claims and drawings disclosed in this specification, technical personnel in this field can easily understand the relevant purposes and advantages of this patent.

[0138] In order to make the purpose, technical solution and advantages of this patent clearer, the implementation method of this patent will be further described in detail below in conjunction with the accompanying drawings. In the present invention, the end used for writing is called the lower end or front end of the pen.

[0139] As shown in FIGS. 1 to 15 , a push-type writing tool according to the first embodiment of the present invention is specifically a multi-core pen. Figure 3 The multi-core pen specifically includes: a pen body, a first writing body, a second writing body and a third writing body arranged in the pen body, and a rotary pressing operation mechanism.

[0140] The main pen holder is composed of an upper pen shell 3, an upper limit cap 2 and a lower pen shell 7. The lower pen shell 7 includes a lower pen shell body 71 and a rubber sleeve 72. The upper pen shell 3 and the upper limit cap 2 are interference fit, and the upper pen shell 3 and the lower pen shell 7 are threaded fit. The tube sleeve 72 is sleeved on the outer side of the lower pen shell body 71 to improve the hand feeling of holding the pen. There are multiple raised ends 711 on the lower surface of the lower pen shell body 71 to prevent the tube sleeve 72 from falling off.

[0141] Each writing body includes a refill 10 of a different color. The upper end of the refill 10 is connected to a plug assembly 6 as a pressing part. A lower spring 8 as a writing body biasing member is provided around or on the lower end of the refill. The lower spring 8 is fixed on a lower spring limiter 9 in the pen barrel, so that the lower spring 8 can apply an upward force to the refill 10.

[0142] The wheel-driven pressing operating mechanism is composed of a pressing assembly 1, an upper limit cap 2, an upper spring 4 and an upper spring limiter 5.

[0143] The pressing assembly 1 is further composed of a pressing rod 11 and a pushing member 12. Figure 8 As shown, the outer surface of the lower portion of the pressing rod 11 has a convex portion 111; Figure 9d As shown, the inner surface of the push member 12, which serves as an eccentric rotating cam, has a corresponding limiting groove 125. By inserting the protruding portion 111 into the groove 125, an interlocking fit is achieved, so that the two parts are relatively fixed in the axial direction and are allowed to rotate around the axis. Thereby, the push member 12 can be fixed on the pressing rod 11, and the push member 12 can rotate relative to the pressing rod 11 while sliding along the up and down directions of the pen shaft as the pressing rod 11. The pressing rod 11 is not limited to a rod-shaped shape, and various shapes that are easy to press or have a decorative effect can be used as the shape of the pressing rod protruding from the upper end of the pen shaft. The pressing rod is not limited to an integrated structure, and various structures that are easy to assemble can be used for the pressing rod.

[0144] In this embodiment, the outer side of the push member 12 as an eccentric rotating cam has an eccentric protrusion as a coupling protrusion, such as Figure 9a-9b As shown, the protrusion has an upper rotation slope 121, a lower rotation slope 122, a left side surface 123 and a guide surface 124, wherein the lower rotation slope 122 can be selectively operationally coupled or operationally decoupled with the plug assembly 6 as a pressing portion.

[0145] like Figure 10a-10c As shown, there are multiple concave and convex ends 25 and multiple rotating inclined surfaces 21 on the outer side of the bottom end of the upper limit cap 2, forming the upper half of the rotation driving track inside the pen holder. When the push member 12 moves upward, the multiple rotating inclined surfaces 21 can act on the upper rotating inclined surface 121 on the push member 12 as the rotation force part, constraining the push member 12 to rotate. There is a through hole 24 in the center of the upper limit cap 2, which can constrain the pressing component 1 to slide in the axial direction in the up and down directions. The upper limit cap 2 has an extended end 23 at the top, and the lower end of the extended end 23 contacts the upper pen shell 3 to act as a pen clip.

[0146] like Figures 11a-11cAs shown, there is a concave-convex end 36 at the top of the upper pen shell 3, and the concave-convex end 36 is interference-fitted with the concave-convex end 25 of the upper limit cap 2, and is used for fixed connection with the upper limit cap 2. In addition, there are multiple guide rail convex strips 32 on the inner surface of the upper pen shell 3, and their main function is to constrain the plug assembly 6 to achieve radial fixation and constrain the pressing assembly 11. In addition, there are square openings 31 or connecting parts 35 between the guide rail convex strips 32. Among them, the square opening 31 and the connecting part 35 are arranged at intervals. The square opening 31 can be used as a retaining part for retaining the plug assembly 6. There is an upper narrow groove 33 above the connecting part 35, and there is a lower narrow groove 34 below the connecting part 35.

[0147] like Figure 12a-12b As shown, the upper spring stopper 5 has a plurality of steps 52 and a central groove 51, which are used to fix the upper spring 4 and radially fix the plug assembly 6. The step 52 is inserted into the upper slot 33 between the convex strips of the upper pen housing guide rail to fix the upper spring stopper 5. The lower end of the upper spring 4 is inserted into the central groove 51 for fixation, and the upper end of the upper spring 4 is inserted into the push member 12 and contacts the lower end of the pressing rod 11. The spring 4 acts as a biasing member of the pressing rod to apply an upward force to the pressing rod 11. The plug assembly 6 passes through the gap between the step 52, thereby achieving radial fixation.

[0148] like Figures 13a-13f As shown, the plug assembly 6 is composed of a plug upper part 61, a thin leaf spring 62 and a plug lower part 63. There is a protrusion 631 at the bottom end of the plug lower part 63, which is used to connect the end of the pen core 10. The thin leaf spring 62, which serves as a stopper biasing member, has two opposite side edges, which are respectively inserted into the grooves of the plug upper part 61 and the plug lower part 62, so that the thin leaf spring 62 is fixed between the two parts and provides the required elastic support. There is an oblique outer inclined surface 611 and a square protrusion 612, which serves as a stopper and matches the square opening 31, at the top of the plug upper part 61. When the square protrusion 612 moves to the position of the square opening 31, the square protrusion 612, which serves as a stopper, moves into the square opening 31 under the combined action of the thin leaf spring 62 driving and the outer inclined surface 611 receiving the push member 12 to rotate, so as to be stuck in the square opening 31, so that the pen core 10 connected to the plug upper part 61 remains protruding from the lower end of the pen holder. At the same time, the oblique outer inclined surface 611 at the top of the upper part 61 of the plug also forms the lower half of the rotation driving track inside the pen body, which can constrain the push member 12 to rotate when it acts with the lower rotating inclined surface 122 on the push member 12 as the rotation force part.

[0149] like Fig.14aAs shown, the lower spring stopper 9 has a plurality of through holes for restricting the axial movement of the pen core 10 and preventing the lower spring 8 from falling. It has a plurality of extension arms 91 for restricting the lower spring to be radially fixed. The top of the extension arm 91 has a protruding end 911 that can be inserted into the narrow groove 34 under the upper pen housing guide rail convex strip, so as to achieve the relative locking of the lower spring stopper 9 and the upper pen housing 3. The lower spring 8 is sleeved on the pen core and fixed by the lower spring stopper 9, and can be squeezed and compressed by the lower part 63 of the plug.

[0150] like Figures 15a-15f and 16a-16d, the operation process of the multi-core pen in Example 1 is as follows:

[0151] 1. When the rotary pressing mechanism is operated for the first time, the pressing rod slides downward along the pen shaft, so that the first writing body protrudes from the lower end of the pen shaft. Specifically, when the pressing assembly 1 is pressed down, the lower rotating inclined surface 122 of the protruding part of the push piece 12 interacts with the outer inclined surface 611 of the upper part of the plug. On the one hand, the outer inclined surface 611 has a circumferential inclination, which can be used as the lower half of the rotation driving trajectory, so that the vertical downward pressure generates a first component force that causes the push piece 12 to rotate itself; on the other hand, the outer inclined surface 611 has a radial inclination, which can be used as a transposition action surface, so that the vertical downward pressure generates a second component force that can cause the upper part 61 of the plug to move outward perpendicular to the pen shell wall. During the pressing process of the pressing assembly 1, the plug assembly 6 continues to move downward. When the left side surface 123 of the protruding part of the push piece 12 is out of contact with the upper limit cap vertical surface 22, the push piece 12 rotates under the first component force, and the guide surface 124 stops rotating after contacting the upper pen shell guide rail convex strip 32. When the square protrusion 612 on the upper part of the plug moves down to the square opening 31 of the upper pen shell, the pen core reaches the extended state, and the upper part 61 of the plug is ejected by the second component force, and the top surface of the square protrusion 612 contacts the top surface of the square opening 31 to lock the pen core. When the pressing assembly 1 is released, that is, during the resetting process of the pressing assembly 1, the pusher 12 moves upward under the elastic force of the upper spring 4, and the upper rotating inclined surface 121 of the protruding part of the pusher 12 can serve as the upper half of the rotation driving track, contacting the upper limit cap rotating inclined surface 21, and being constrained by it, the pusher 12 rotates upward to reach the initial position of the next cycle.

[0152] Second, when the rotary pressing mechanism is operated for the second time, the eccentric rotating cam rotates, thereby realizing the transition from the state in which the pressing rod is operationally coupled with the first writing body to the state in which the pressing rod is operationally coupled with the second writing body. The rotary pressing mechanism can make the second writing body protrude from the lower end of the pen shaft, while releasing the protrusion of the first writing body. Specifically, when the pressing assembly 1 is pressed again, the action process of the push member 12, the plug assembly 6, and the upper pen shell 3 is consistent with the above. However, during the downward movement, the edge 632(2) of the lower part 63(2) of the plug under the action of the push member 12 acts as a disturbance part, and contacts and squeezes the inner side surface 613(1) of the upper part 61(1) of the plug that has been locked, so that the upper part 63(1) of the plug that has been locked rotates and resets, so that the plug assembly 6(1) loses its locking constraint and moves upward and resets under the elastic force of the lower spring. The effect of contacting the locked state of the pen core when switching the pen core is achieved.

[0153] 3. When the locking part is operated radially inward, the writing body is released from the pen holder. Specifically, when the core cutting pen is not in use, the square protrusion 612 on the upper part of the plug in the locked state can be directly pressed from the outside to make the plug assembly lose the locking constraint, thereby realizing manual reset of the pen core.

[0154] Figure 17a-17b The second embodiment of the push-type writing tool of the present invention is provided. The difference between the second embodiment and the first embodiment is that the upper part 61 of the plug further has a side pressing rod 614, and the side pressing rod 614 and the upper protrusion 612 of the plug are at a position close to each other in the circumferential direction; the upper pen shell 3 further has a side pressing opening 37 on the side, and the side pressing opening 37 and the square opening 31 are at a position close to each other in the circumferential direction. The side pressing rod 614 extends radially outward from the side pressing opening 37 to the outside of the pen holder. When there are a large number of refills and the consumer is eager to choose the desired color, or when the consumer is accustomed to side pressing a multi-color pen, the consumer can directly press the sliding side pressing rod 614 to make the refill corresponding to the upper part 61 of the plug protrude from the lower end of the pen holder. At the same time, the torque applied to the sliding side pressing rod 614 can also make the upper protrusion 612 rotate and embed into the square opening 31, so as to be locked in the holding position.

[0155] Figures 18a-18d The third embodiment of the present invention is a push-type writing tool. The difference between the third embodiment and the first embodiment is that the retaining structure of the pen core is different after it protrudes from the lower end of the pen shaft. In the first embodiment, the locking direction of the push part is radially outward; while in the third embodiment, the locking direction of the push part is radially inward. Fig.18a and 18b As shown, the upper pen barrel has three inner wall protrusions 38 as retaining portions arranged between the three pressing portions 6 in the circumferential direction, and each inner wall protrusion 38 has guide grooves 381 on both sides.

[0156] like Fig.18c and 18d As shown, the push part 6 has plug wing parts 67 on both sides that can be inserted into the guide groove 381 and constrained to slide therein, and the upper inclined surface 66 of the push part 6 is opposite to that of the first embodiment in radial inclination direction. The lower rotating inclined surface 122 (1) of the push member 12 (1) and the upper inclined surface 611 of the push part 6 are opposite to those of the first embodiment in radial inclination direction, so when the pressing rod is operated to make the first writing body protrude from the lower end of the pen barrel, the plug wing part 67 of the push part 6 is separated from the guide groove 381 inside the pen barrel, and the push part 6 is tilted inward by the push member 12, and the stop surface 671 above the plug wing part contacts and stops with the lower bottom surface 382 of the protrusion 38 on the inner wall surface of the pen barrel, thereby achieving the state where the pen core remains protruding.

[0157] Continue to see Figures 19a-19d When the rotary pressing operating mechanism is operated for the second time, the inner lower locking tooth 65(2) of the pressing part 6(2) of the second writing body contacts and squeezes the inner upper locking tooth 64(1) of the pressing part 6(1) of the first writing body, and the pressing part 6(1) is pushed radially outward, and the plug side wing part 67 of the pressing part 6(1) re-enters the guide groove 381 inside the pen body and slides upward, thereby resetting the pressing part 6(1) in the locked state.

[0158] In another specific embodiment of a push-type writing tool, when the pressing rod is operated to make the first writing body protrude from the lower end of the pen shaft, the internal locking teeth on the push portion 6 (1) of the first writing body and the internal locking teeth on the push portion 6 (2) of the second writing body serving as the retaining portion are interlaced and locked with each other to form a concave-convex locking structure, so that the pen core remains in a protruding state.

[0159] Fig. 20 A push-type writing tool according to the fourth embodiment of the present invention is provided, the difference between which and the first embodiment lies in that the upper limit cap rotating bevel 21 and the upper inclined surface 611 of the plug are close to and almost abut against each other in the axial direction, and the distance between the lower end of the upper limit cap rotating bevel 21 and the upper end of the upper inclined surface 611 of the plug on the axis is smaller than the height of the upper rotating bevel 121, so that the pressing rod only needs to move a smaller stroke to complete an operation.

[0160] In another embodiment, the difference from Example 1 is that the eccentric rotating cam has two eccentric decoupling grooves. When the decoupling grooves are located above the second push part and the third push part, the eccentric rotating cam is driven by the pressing rod to slide in the up and down directions, and the decoupling grooves allow the second push part and the third push part to pass through unimpeded, thereby preventing the eccentric rotating cam from driving the second push part or the third push part to slide in the up and down directions, thereby achieving operational decoupling of the second writing body and the third writing body. At the same time, the part of the eccentric rotating cam without the decoupling grooves presses against the first push part, achieving operational coupling.

[0161] Figures 21a-21e A fifth embodiment of the present invention is provided for a push-type writing tool, which differs from the first embodiment in that all the push parts of the present embodiment are integrated push parts. Taking the first push part as an example, the eccentric rotating cam applies an axial force to the first push part, at which time the inner wall protrusion 38 inside the pen shaft abuts against the lower protrusion of the first stop part, and the lower protrusion of the first stop part serves as the first transfer action surface on the first push part. After continuous axial thrust, the inner wall protrusion 38 applies a radial inward force to the first transfer action surface, and the push part deflects as a whole, causing the push part to tilt outward, so that the first stop part on the first push part can radially extend from the first opening. The top surface of the pressing part can also serve as the first rotation action surface. The eccentric rotating cam applies an axial force to the first pressing part. The top surface of the pressing part, which is a slope structure, is subjected to the axial force, causing the entire pressing part to deflect outward, thereby intensifying the tendency of the first locking part on the first pressing part to radially extend from the first opening.

[0162] In the specification of this patent, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and components of this patent, but these terms are used here only for the purpose of convenience of description and are determined based on the example orientations shown in the drawings. Since the embodiments disclosed in this patent can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0163] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this patent will not further describe various possible combinations.

[0164] In addition, the various implementation methods of this patent can be combined arbitrarily, as long as they do not violate the concept of this patent, they should also be regarded as the contents disclosed by this patent.

Claims

1. A push-type writing tool, characterized in that: include: pen; A first writing body, disposed in the pen holder; At least one second writing body disposed in the pen barrel; The wheeled pressing operating mechanism is configured as follows: when the wheeled pressing operating mechanism is operated for the first time, the wheeled pressing operating mechanism can cause the first writing body to protrude from the lower end of the pen shaft; when the wheeled pressing operating mechanism is operated for the second time, the wheeled pressing operating mechanism can cause the second writing body to protrude from the lower end of the pen shaft.

2. The push-type writing tool according to claim 1, characterized in that: The first writing body includes a first writing body biasing member, and the first writing body biasing member applies an upward force to the first writing body; When the wheeled pressing operation mechanism is operated for the second time, the wheeled pressing operation mechanism can release the protrusion of the first writing body.

3. The push-type writing tool according to claim 1, characterized in that: The wheeled pressing operating mechanism includes a pressing rod protruding upward from the pen shaft, and the wheeled pressing operating mechanism is operated by the pressing rod. When the pressing rod is operated, it can slide along the up and down directions of the pen shaft. The pressing rod includes a pressing rod biasing piece, and the pressing rod biasing piece applies an upward force to the pressing rod.

4. The push-type writing tool according to claim 3, characterized in that: The wheel-driven pressing operation mechanism also includes an eccentric rotating cam, and the pressing rod can be selectively operationally coupled or operationally decoupled with the first writing body and the second writing body through the eccentric rotating cam.

5. The push-type writing tool according to claim 4, characterized in that: When the wheel-driven pressing operating mechanism is operated for the second time, the eccentric rotating cam rotates, thereby realizing a transition from a state in which the pressing rod is operationally coupled with the first writing body to a state in which the pressing rod is operationally coupled with the second writing body.

6. The push-type writing tool according to claim 5, characterized in that: The eccentric rotating cam is arranged on the pressing rod. The eccentric rotating cam can slide along the up-and-down direction of the pen holder along with the pressing rod. The eccentric rotating cam can rotate relative to the pressing rod.

7. The push-type writing tool according to claim 6, characterized in that: A rotation driving track is arranged in the push-type writing tool, and a rotation force-carrying part matching with the rotation track is arranged on the eccentric rotating cam. When the eccentric rotating cam slides along the up and down directions of the pen shaft, the rotation force-carrying part interacts with the rotation driving track to make the eccentric rotating cam rotate a specific angle.

8. The push-type writing tool according to claim 7, characterized in that: The first writing body includes a first pressing part, the second writing body includes a second pressing part, and the eccentric rotating cam has the following circumferential direction: An eccentric coupling protrusion, when the coupling protrusion is located above the first push part or the second push part, the up-down sliding of the pressing rod can drive the first push part or the second push part to slide up-down through the coupling protrusion, thereby realizing operational coupling; the coupling protrusion is radially protruding or axially protruding relative to the eccentric rotating cam body; or The eccentric decoupling groove, when the decoupling groove is located above the first push part or the second push part, the up-down sliding of the pressing rod can pass through the decoupling groove to avoid driving the first push part or the second push part to slide up-down, thereby realizing operational decoupling.

9. The push-type writing tool according to claim 8, characterized in that: When the pressing rod is operated to make the first writing body protrude from the lower end of the pen shaft, the first pressing portion can interact with the retaining portion on the pen shaft or the second pressing portion, so that the first writing body remains protruding from the lower end of the pen shaft; the retaining portion includes a first opening corresponding to the first pressing portion, or the retaining portion includes a locking structure inside the pen shaft.

10. The push-type writing tool according to claim 9, characterized in that: The first pressing portion includes a first locking portion and a first locking portion biasing member, and the first locking portion biasing member applies a radially outward force to the first locking portion so that the first locking portion can radially extend from the first opening or be locked in the concave-convex locking structure; when the first locking portion is operated radially inward, the first writing body is released from the protrusion of the pen shaft.

11. The push-type writing tool according to claim 9, characterized in that: The first pressing part includes a first rotation action surface and a first locking part. When the eccentric rotating cam presses the first pressing part downward, the first rotation action surface is rotated by the eccentric rotating cam or the inside of the pen barrel, and the first locking part can radially extend from the first opening or be locked in the concave-convex locking structure.

12. The push-type writing tool according to claim 10 or 11, characterized in that: The second pressing part includes a disturbance-acting part. When the second pressing part moves downward, the disturbance-acting part disturbs the first stopping part of the first pressing part, thereby releasing the first writing body from protruding from the pen shaft.

Images