A click pen with anti-ink accumulation function

Abstract

The application discloses a click pen with an anti-ink accumulation function, which comprises a pen rod mechanism, a pen neck mechanism, a pen core with a pen head and a click assembly; the click assembly comprises a rotating mechanism, the rotating mechanism is connected with the pen core and is arranged to drive the pen core to rotate around the axis in response to the action of starting writing and lifting the pen by a writer during writing; during the action of starting writing, the pen core continuously bears the reaction pressure from a writing surface; during the action of lifting the pen, the pen core loses the reaction pressure from the writing surface; the pen core repeatedly bears and loses the reaction pressure from the writing surface, the rotating mechanism drives the pen core to repeatedly rotate around the axis by a predetermined angle in the same direction, so that the pen core can rotate around the axis in a 360-degree direction in a graduated manner. The rotating mechanism is used for realizing the 360-degree rotation of the pen core around the axis of the click pen, and the technical problem of uneven wear of the ball of the pen core caused by the fixed writing orientation of the click pen is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of writing tools, in particular to a click pen with anti-ink accumulation function. BACKGROUND

[0002] At present, the click pen has superior convenience in use compared with the conventional plug-in pen, and thus is more and more popular among the public. However, the position of holding the pen body of the click pen with the existing structure is limited by the basically fixed position of the pen clip, and in this case, the writing pressing force direction of the ball in the pen head part is always the same, which can cause uneven wear of the ball and easily result in ink accumulation in the pen head part. Therefore, in order to avoid ink accumulation in the pen head part during writing, a click pen with anti-ink accumulation function needs to be developed. SUMMARY

[0003] The present application aims to provide a click pen with anti-ink accumulation function, which can prevent uneven wear of the ball in the pen head part and thus avoid ink accumulation, achieve smooth writing, and improve the service life.

[0004] To solve the above technical problems, the present application adopts the following technical scheme:

[0005] A click pen with anti-ink accumulation function, comprising a pen barrel mechanism, a pen neck mechanism, a pen core with a pen head, and a click assembly; the pen neck mechanism is connected with the pen barrel mechanism and used as a hand-held part of a writer to write on a writing surface, the click assembly is adapted to drive the pen core to extend or retract the pen neck mechanism along the axial direction of the click pen, the click assembly comprises a rotating mechanism, the rotating mechanism is connected with the pen core and arranged to drive the pen core to rotate around the axis in response to the down-pen and up-pen actions of the writer during writing, during the down-pen action, the pen core continuously receives the reaction pressure from the writing surface, and during the up-pen action, the pen core loses the reaction pressure from the writing surface, the rotating mechanism repeatedly drives the pen core to rotate around the axis by a predetermined angle in the same direction through the pen core repeatedly receiving and losing the reaction pressure from the writing surface, so that the pen core can rotate around the axis in a graduated manner in the 360-degree direction.

[0006] Further, the rotating mechanism comprises a click rod extending along the axis and first and second ratchet portions arranged at both ends of the click rod in the axial direction, the click rod is connected with the pen core, the first and second ratchet portions have the same pitch and are arranged to be staggered in phase with each other, and the pitch defines the predetermined angle of the pen core repeatedly rotating around the axis;

[0007] During the writing action, the plunger is adapted to be driven by the first ratchet part to rotate the refill around the axis by a first angle; during the lifting action, the plunger is driven by the second ratchet part to rotate the refill by a second angle in the direction driven by the first ratchet part, and the sum of the first angle and the second angle is equal to the predetermined angle of the refill rotating around the axis.

[0008] Further, the first ratchet part comprises the first ratchet and a spring limiting part, the first ratchet is arranged at the end of the plunger away from the pen head, and the spring limiting part is provided with the second ratchet adapted to cooperate with the first ratchet, during the writing action, the first ratchet cooperates with the second ratchet to drive the plunger and rotate the refill around the axis, and during the lifting action, the first ratchet is disengaged from the second ratchet under the elastic action of the spring limiting part.

[0009] The second ratchet part comprises the third ratchet and a connecting part, the third ratchet is arranged at the end of the plunger close to the pen head, and the connecting part is provided with the fourth ratchet adapted to cooperate with the third ratchet, during the writing action, the third ratchet is disengaged from the fourth ratchet, and during the lifting action, the third ratchet cooperates with the fourth ratchet under the elastic action of the spring limiting part to drive the plunger and rotate the refill in the direction driven by the first ratchet part.

[0010] Further, the spring limiting part comprises the buffer spring and the inner plug part, the inner plug part is arranged inside the spring limiting part in a movable manner within a certain range, and the buffer spring is arranged inside the spring limiting part, the two ends of the buffer spring abut against the spring limiting part and the inner plug part respectively, and during the lifting action, the buffer spring disengages the first ratchet from the second ratchet.

[0011] Further, the spring limiting part further comprises the limiting hole, and the surface of the inner plug part is provided with the elastic part cooperating with the limiting hole, so as to arrange the inner plug part inside the spring limiting part.

[0012] Further, the plunger assembly further comprises the operating mechanism, the operating mechanism extends at least partially to the outside of the plunger, and the bottom of the operating mechanism is connected to the spring limiting part to push the rotating mechanism and the refill to move in the axis direction.

[0013] Further, the connecting part comprises the reset spring, the two ends of the reset spring abut against the connecting part and the positioning mechanism respectively, and during the lifting action, the reset spring ensures the cooperation between the third ratchet and the fourth ratchet.

[0014] Further, the positioning mechanism is at least partially connected to the connecting part, and the surface of the positioning mechanism is formed with the abutting end surface abutting against the reset spring.

[0015] Furthermore, the surface of the positioning mechanism has a strip-shaped protrusion, and the connecting part of the connecting part and the positioning mechanism is provided with an inner positioning groove suitable for embedding into the strip-shaped protrusion, thereby restricting the circumferential movement of the connecting part by the positioning mechanism.

[0016] Furthermore, a clamping part is provided on the inner wall of the lever, and the lever is connected to the pen refill through the clamping part to drive the pen refill to rotate.

[0017] This invention provides a click pen with an anti-ink-accumulation function. Utilizing the repetitive pen-pressing and-lifting motions performed by the writer based on font structure or fatigue levels, a rotating mechanism enables the pen tip to rotate 360° around the pen's axis. This avoids uneven wear of the pen tip ball caused by the pen's fixed writing orientation, eliminates ink accumulation at the pen tip, and extends the pen's lifespan, thus having broad application value. Furthermore, the pen tip rotation is done in a graduated manner; the pen tip is driven to rotate at intervals, each rotation a predetermined angle. This predetermined angle can be controlled to a small degree by setting the pitch of the ratchet in the rotating mechanism, thus having virtually no impact on the writing process. Attached Figure Description

[0018] The above description of the present invention and the following detailed embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed technical solutions.

[0019] Figure 1 This is an exploded view of a click pen with anti-ink-accumulation function according to one embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of a click pen with anti-ink accumulation function according to one embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the positioning mechanism in a click pen with anti-ink accumulation function according to one embodiment of the present invention;

[0022] Figure 4 yes Figure 3 Side view of the positioning mechanism in the middle;

[0023] Figure 5 This is a schematic diagram of the connecting part of a click pen with anti-ink accumulation function according to one embodiment of the present invention;

[0024] Figure 6 yes Figure 5 A schematic diagram of the connecting part from another angle;

[0025] Figure 7 yes Figure 6 Top view of the connecting part in the middle;

[0026] Figure 8 This is a cross-sectional view of the rotating mechanism in a click pen with anti-ink accumulation function according to one embodiment of the present invention;

[0027] Figure 9 yes Figure 8 Front view of the rotating mechanism;

[0028] Figure 10 It is along Figure 9 A sectional view of AA′ in the diagram;

[0029] Figure 11 This is a schematic diagram of the spring limiting part of a click pen with anti-ink accumulation function according to one embodiment of the present invention;

[0030] Figure 12 yes Figure 11 A schematic diagram of the spring limiting part at another angle;

[0031] Figure 13 yes Figure 12 Top view of the spring limiting part in the middle;

[0032] Figure 14 This is a schematic diagram of the inner plug of a click pen with anti-ink accumulation function according to one embodiment of the present invention;

[0033] Figure 15 yes Figure 2 A magnified view of a section at point A in the middle;

[0034] Figure 16 This is a half-cut view of the press component in the pen-lifting state in this invention;

[0035] Figure 17 This is a half-cut view of the click component in the pen-down state in this invention.

[0036] The reference numerals in the attached figures are explained as follows:

[0037] Pen barrel mechanism: 1

[0038] Neck mechanism: 2

[0039] Pen clip: 3; Positioning mechanism: 4; Elastic boss: 41; Strip-shaped protrusion: 42; Abutting end face: 43; Clamping lever: 5

[0040] Clamping part: 51

[0041] First ratchet: 52; Third ratchet: 53; Hook-shaped part: 54; Spring limiting part: 6

[0042] Second ratchet: 61; Outer positioning groove: 62; Limiting hole: 63; Buffer spring: 64; Inner plug: 65; Elastic part: 651; Circumferential positioning part: 652; Rotary wheel: 71

[0043] Guide rail: 711

[0044] Pushbutton: 72; Extension spring: 73; Connecting part: 8

[0045] Through hole: 81; Inner positioning groove: 82; Fourth ratchet: 83; Return spring: 84; Pen lead: 9

[0046] Pen tip: 91 Detailed Implementation

[0047] The following detailed description of the features and advantages of the present invention is sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly. Furthermore, based on the specification, claims and drawings disclosed herein, those skilled in the art can easily understand the related objects and advantages of the present invention.

[0048] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0049] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "outer", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product is usually placed during use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0050] For ease of understanding, in this embodiment, the pen refill 9 extends downwards when writing from the pen neck mechanism 2, and retracts upwards when retracting from the pen neck mechanism 2.

[0051] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0052] like Figures 1-17The invention shown is an embodiment of a press-type pen with an anti-ink-accumulation function, comprising a pen barrel mechanism 1, a pen neck mechanism 2, a pen core 9 with a pen tip 91, and a press-type assembly. The pen neck mechanism 2 is connected to the pen barrel mechanism 1 and serves as the handheld part for writing on the writing surface. The press-type assembly is adapted to drive the pen core 9 to extend or retract into the pen neck mechanism 2 along the axial direction of the press-type pen. In addition to the conventional mechanism for driving the pen refill 9 to extend or retract the neck mechanism 2, the press assembly also includes a rotation mechanism connected to the pen refill 9 and adapted to drive the pen refill 9 to rotate around the axis of the press pen in response to the penholder's pen-down and pen-up actions during writing. During the pen-down action, the pen refill 9 is continuously subjected to the reaction pressure of the writing surface, while during the pen-up action, the pen refill 9 loses the reaction pressure from the writing surface. Through the repeated application and loss of the reaction pressure of the writing surface, the rotation mechanism causes the pen refill 9 to rotate repeatedly around the axis in the same direction by a predetermined angle, thereby enabling the pen refill to rotate in a 360-degree direction around the axis in a graduated manner. Here, the graduated manner means that the pen refill is driven to rotate at intervals, each rotation being a predetermined angle.

[0053] The rotating mechanism includes a pusher 5 extending along an axis and a first ratchet portion and a second ratchet portion disposed at both ends of the pusher 5 in the axial direction. The pusher 5 is connected to the pen refill 9. The first and second ratchet portions have the same pitch but are staggered in phase, which defines a predetermined angle for the pen refill 9 to rotate repeatedly around the axis. During the pen-pressing action, the pusher 5 is driven by the first ratchet portion to rotate the pen refill 9 around the axis by a first angle. During the pen-lifting action, the pusher 5 is driven by the second ratchet portion to rotate the pen refill 9 in the direction driven by the first ratchet portion by a second angle. The sum of the first and second angles equals the predetermined angle for the pen refill 9 to rotate repeatedly around the axis, which corresponds to the pitch of the first and second ratchet portions. Preferably, the first angle is equal to the second angle, that is, the first and second ratchet portions are staggered in phase by half a pitch.

[0054] In use, pressing the push-button assembly downwards causes the pen lead 9 to extend from the pen neck mechanism 2. This is equivalent to the pen being in a non-writing, lifted-up state. The first ratchet at the top of the push-button 5 is disengaged, while the second ratchet at the bottom of the push-button 5 is engaged. When writing, as the pressure of the pen lead 9 against the writing surface (i.e., the paper) increases, the pen lead 9, under the reaction pressure of the writing surface, pushes the push-button 5 upwards, causing the second ratchet to disengage. As the push-button 5 moves upwards, the first ratchet begins to engage. Due to the phase difference between the first and second ratchets, the push-button 5 rotates around its axis during the engagement process, causing the pen lead 9 to rotate by a first angle in one direction. When the pen is lifted after the initial stroke, the lead 9 loses the reaction pressure from the writing surface. The push rod 5 moves downwards under the elastic force of the rotating mechanism, causing the second ratchet to engage again. Due to the phase difference between the two ratchets, the push rod 5 rotates a second angle along the direction driven by the first ratchet as the second ratchet engages. Therefore, during normal use, with the repeated switching between the initial and lifting strokes, the rotating mechanism drives the lead 9 to rotate 360°, ensuring even pressure on the ballpoint and preventing ink buildup at the pen tip due to uneven wear.

[0055] Specifically, the first ratchet part includes a first ratchet 52 and a spring limiting part 6. The first ratchet 52 is arranged at one end of the push rod 5, and the spring limiting part 6 is provided with a second ratchet 61 suitable for cooperating with the first ratchet 52. During the pen-pressing action, the first ratchet 52 and the second ratchet 61 cooperate to drive the push rod 5 and drive the pen core 9 to rotate around the axis in one direction. During the pen-lifting action, the first ratchet 52 disengages from the second ratchet 61 under the elastic action of the spring limiting part 6. The second ratchet portion includes a third ratchet 53 and a connecting portion 8. The third ratchet 53 is arranged at the end of the push rod 5 near the pen tip 91 (i.e., the end away from the first ratchet 52). The connecting portion 8 is provided with a fourth ratchet 83 adapted to cooperate with the third ratchet 53. During the pen-down action, the third ratchet 53 and the fourth ratchet 83 disengage. During the pen-lifting action, the third ratchet 53 cooperates with the fourth ratchet 83 under the elastic force of the spring limiting portion 6 to drive the push rod 5 and drive the pen tip 9 to rotate continuously in the direction driven by the first ratchet portion.

[0056] Specifically, the spring limiting part 6 includes a buffer spring 64 and an inner plug part 65. The inner plug part 65 is disposed inside the spring limiting part 6 in a manner that allows it to move within a certain range. The buffer spring 64 is disposed inside the spring limiting part 6, with its two ends abutting against the spring limiting part 6 and the inner plug part 65, respectively, thereby imparting an elastic force to the spring limiting part 6, which in turn applies an elastic force to the inner plug part 65, the push rod 5, and the pen refill 9. During the pen-pressing action, the buffer spring 64 is compressed and moves upward under the pressure of the pen refill 9. During the pen-lifting action, the buffer spring 64 returns from the compressed position to its original position. Thus, the elastic force of the buffer spring 64 returning to its original position releases the engagement between the first ratchet 52 and the second ratchet 61, and engages the third ratchet 53 and the fourth ratchet 83.

[0057] Specifically, the spring limiting part 6 also includes a limiting hole 63, and the inner plug part 65 has an elastic part 651 on its surface that cooperates with the limiting hole 63, thereby placing the inner plug part 65 inside the spring limiting part 6. Preferably, the elastic part 651 is in the shape of a boss. During the pen-down movement, the inner plug part 65 can compress the buffer spring 64 and move upward. During the pen-lifting movement, the elastic part 651 prevents the inner plug part 65 from moving excessively downward, limiting the movement distance of the inner plug part 65 relative to the spring limiting part 6. In another embodiment of the present invention, the inner plug portion 65 further includes a groove-shaped circumferential positioning portion 652, in which a hook-shaped portion 54 of the push rod 5 is provided. When the pen refill 9 extends out of the pen neck mechanism 2, the inner plug portion 65 pushes the push rod 5 downward through the hook-shaped portion 54. When the pen refill 9 retracts into the pen neck mechanism 2, the inner plug portion 65 pulls the push rod 5 through the hook-shaped portion 54, causing the push rod 5 and the pen refill 9 to move back together with the spring limiting portion 6. During the pen stroke, the hook-shaped portion 54 abuts against the inner plug portion 65, thereby compressing the buffer spring 64 and causing it to move upward.

[0058] Specifically, the press assembly also includes an operating mechanism that extends at least partially to the outside of the press pen. The bottom of the operating mechanism is connected to a spring limiter 6 to push the rotating mechanism and the pen tip 9 to move in the axial direction. In another embodiment of the present invention, the operating mechanism includes a rotating wheel 71, a pusher head 72, and a telescopic spring 73. The pusher head 72 extends to the outside to facilitate operation by the writer, allowing the pen tip 9 to switch between an extended position and a retracted position from the pen neck mechanism 2. The rotating wheel 71 is embedded inside the pusher head 72, and the bottom of the rotating wheel 71 contacts the spring limiting part 6. When the pusher head 72 is pressed down, the pusher head 72 pushes the rotating wheel 71 downward until the rotating wheel 71 is fixed on the pen clip 3, thereby allowing the pen tip 91 to extend from the pen neck mechanism 2. In this way, the telescopic spring 73 is compressed. When the rotating wheel 71 moves, the spring limiting part 6, the inner plug part 65, the buffer spring 64, and the pusher bar 5 that abut against it also move downward synchronously. At this time, the second ratchet part at the bottom of the pusher bar 5 is just engaged and connected, and there is a distance between the first ratchet 52 and the second ratchet 61 at the top of the pusher bar 5. When the pen refill 9 retracts into the pen neck mechanism 2, the elastic force of the telescopic spring 73 helps the actuating assembly move upward. More specifically, the pen clip 3 may be provided with guide ribs to position the rotating wheel 71.

[0059] More specifically, the spring limiting part 6 also includes an outer positioning groove 62, which is provided on the outer surface of the spring limiting part 6 for embedding one end of the guide rail 711 on the surface of the rotating wheel 71. The other end of the guide rail 711 is embedded in the pusher head 72, thereby limiting the circumferential rotation of the spring limiting part 6.

[0060] Specifically, the connecting part 8 may include a return spring 84, with both ends of the return spring 84 abutting against the connecting part 8 and the positioning mechanism 4 respectively. When the pen is in the lifting state, the return spring 84 can ensure the engagement and connection between the third ratchet 53 and the fourth ratchet 83.

[0061] Specifically, the positioning mechanism 4 is at least partially connected to the connecting part 8. The end face of the positioning mechanism 4 away from the connecting part 8 is tightly engaged with the pen barrel mechanism 1 to restrict the circumferential rotation of the positioning mechanism 4. The surface of the positioning mechanism 4 has an abutment end face 43 that engages with the return spring 84. More specifically, the positioning mechanism 4 includes an elastic boss 41, and the connecting part 8 has a through hole 81 that mates with the elastic boss 41. The elastic boss 41 is disposed in the through hole 81. When the pen tip 9 extends from the pen neck mechanism 2, the third ratchet 53 of the push rod 5 engages with the fourth ratchet 83 of the connecting part 8 and drives the connecting part 8 downward until the pen tip 91 is in the extended state. In this way, the upward movement direction of the connecting part 8 is restricted by the positioning mechanism 4 through the elastic boss 41, which facilitates the smooth disengagement of the third ratchet 53 and the fourth ratchet 83 during writing. Preferably, the elastic boss 41 has the same structure as the elastic part 651, and the through hole 81 has the same structure as the limiting hole 63.

[0062] Specifically, the positioning mechanism 4 has a strip-shaped protrusion 42 on its surface, and the connecting part 8 and the positioning mechanism 4 are provided with an inner positioning groove 82 suitable for embedding into the strip-shaped protrusion 42, thereby the positioning mechanism 4 restricts the circumferential movement of the connecting part 8.

[0063] Specifically, a clamping part 51 is provided on the inner wall of the lever 5, and the rotating mechanism is connected to the pen refill 9 through the clamping part 51 to drive the pen refill 9 to rotate.

[0064] The terminology and expressions used herein are for descriptive purposes only, and the invention should not be limited to these terms and expressions. The use of these terms and expressions does not imply the exclusion of any illustrative and descriptive equivalents (or parts thereof), and it should be recognized that various modifications that may exist should also be included within the scope of the claims. Other modifications, variations, and substitutions may also exist. Accordingly, the claims should be considered to cover all such equivalents.

[0065] Similarly, it should be noted that although the present invention has been described with reference to the specific embodiments described above, those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and various equivalent changes or substitutions can be made without departing from the spirit of the present invention. Therefore, any changes or modifications to the above embodiments within the scope of the essential spirit of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A press-action pen with an anti-ink-accumulation ball in the nib, comprising a pen barrel mechanism, a pen neck mechanism, a pen core having the nib, and a press-action assembly; the pen neck mechanism is connected to the pen barrel mechanism and serves as a handheld part for writing on a writing surface; the press-action assembly is adapted to drive the pen core to extend or retract from the pen neck mechanism along the axial direction of the press-action pen, characterized in that... The press assembly includes a rotation mechanism connected to the pen refill and configured to drive the pen refill to rotate around the axis in response to the penholder's pen-pressing and pen-lifting actions during writing. During the pen-pressing action, the pen refill is continuously subjected to the reaction pressure of the writing surface, while during the pen-lifting action, the pen refill loses the reaction pressure from the writing surface. Through the repeated application and loss of the reaction pressure from the writing surface, the rotation mechanism causes the pen refill to repeatedly rotate around the axis in the same direction by a predetermined angle, thereby enabling the pen refill to rotate in a graduated manner around the axis in a 360-degree direction.

2. The press-type pen with an anti-ink-accumulation function in the pen tip as described in claim 1, characterized in that, The rotating mechanism includes a push rod extending along the axis and a first ratchet portion and a second ratchet portion disposed at both ends of the push rod in the direction of the axis. The push rod is connected to the pen refill. The first ratchet portion and the second ratchet portion have the same pitch and are staggered from each other in phase. The pitch defines the predetermined angle by which the pen refill rotates repeatedly about the axis. During the pen-pressing action, the lever is adapted to be driven by the first ratchet portion to cause the pen tip to rotate around the axis by a first angle; during the pen-lifting action, the lever is driven by the second ratchet portion to cause the pen tip to rotate continuously along the direction driven by the first ratchet portion by a second angle, and the sum of the first angle and the second angle is equal to a predetermined angle by which the pen tip rotates repeatedly around the axis.

3. The press-type pen with an anti-ink-accumulation function in the pen tip as described in claim 2, characterized in that, The first ratchet portion includes a first ratchet and a spring limiting portion. The first ratchet is arranged at the end of the push rod away from the pen tip. The spring limiting portion is provided with a second ratchet adapted to cooperate with the first ratchet. During the pen-down action, the first ratchet and the second ratchet cooperate to drive the push rod and drive the pen tip to rotate around the axis. During the pen-lifting action, the first ratchet disengages from the second ratchet under the elastic action of the spring limiting portion. The second ratchet portion includes a third ratchet and a connecting portion. The third ratchet is arranged at the end of the push rod near the pen tip. The connecting portion is provided with a fourth ratchet adapted to engage with the third ratchet. During the pen-down action, the third ratchet disengages from the fourth ratchet. During the pen-up action, the third ratchet engages with the fourth ratchet under the elastic action of the spring limiting portion to drive the push rod and cause the pen tip to rotate continuously in the direction driven by the first ratchet portion.

4. The press-type pen with an anti-ink-accumulation function in the pen tip as described in claim 3, characterized in that, The spring limiting part includes a buffer spring and an inner plug. The inner plug is disposed inside the spring limiting part in a way that allows it to move within a certain range. The buffer spring is disposed inside the spring limiting part, and its two ends abut against the spring limiting part and the inner plug, respectively. During the pen lifting action, the buffer spring releases the engagement between the first ratchet and the second ratchet.

5. The press-type pen with an anti-ink-accumulation function in the pen tip as described in claim 4, characterized in that, The spring limiting part further includes a limiting hole, and the surface of the inner plug is provided with an elastic part that cooperates with the limiting hole, thereby placing the inner plug inside the spring limiting part.

6. The press-type pen with an anti-ink-accumulation function in the pen tip as described in claim 4, characterized in that, The press assembly further includes an operating mechanism that extends at least partially outside the press pen, and the bottom of the operating mechanism is connected to the spring limiting portion to push the rotating mechanism and the pen tip to move in the axial direction.

7. The press-type pen with an anti-ink-accumulation function in the pen tip as described in claim 6, characterized in that, The connecting part includes a return spring, with its two ends abutting against the connecting part and the positioning mechanism, respectively. During the pen lifting action, the return spring ensures the engagement of the third ratchet and the fourth ratchet.

8. The press-type pen with an anti-ink-accumulation function in the pen tip according to claim 7, characterized in that, The positioning mechanism is at least partially connected to the connecting part, and the surface of the positioning mechanism has an abutting end face that abuts against the return spring.

9. The press-type pen with an anti-ink-accumulation function in the pen tip as described in claim 8, characterized in that, The surface of the positioning mechanism has a strip-shaped protrusion, and the connecting part of the connecting part and the positioning mechanism is provided with an inner positioning groove suitable for embedding into the strip-shaped protrusion, thereby the positioning mechanism restricts the circumferential movement of the connecting part.

10. The press-type pen with an anti-ink-accumulation function in the pen tip according to claim 2, characterized in that, The inner wall of the push rod is provided with a clamping part, and the push rod is connected to the pen refill through the clamping part to drive the pen refill to rotate.

Images