Key pen

Abstract

According to the key pen, the lantern ring is arranged on the upper portion of the pen holder, the first protruding block penetrating through the pen holder is arranged on the inner wall of the lantern ring, the lantern ring is rotated to drive the first protruding block to push the rotating wheel in the pressing mechanism to rotate reversely, and the rotating wheel is matched with the stop portion and the movable portion in the pressing mechanism in the reverse rotation process so that the pen core can be retracted into the pen holder. By means of the technical scheme, the pen refill is switched from the extending state to the retracting state, an additional operation mode of retracting the pen refill is provided, practicability and convenience are improved, and better user experience is brought.

Description

Technical Field

[0001] The utility model relates to the field of pens, in particular to a key pen. Background Art

[0002] A key pen, also known as a press pen or a click pen, has a basic structure consisting of a pen holder, a spring, a pen core, and a pressing mechanism. The pen core is set in the pen holder, and the two ends of the spring respectively press against the inner end of the pen holder and the outer end of the pen core. The pressing mechanism is used to cooperate with the spring to drive the pen core to move along the axis of the pen holder when a force is applied, and to enable the tip of the pen core to extend or retract into the pen holder. The pressing mechanism can also fix the pen core in the extended position or the retracted position, thereby realizing the switching of the key pen between the writing state and the retracted state.

[0003] The existing key pen usually sets the pressing mechanism at the top of the pen body, for example, the patent publication number is CN117183612A, which discloses a silent pressing pen, including: a pen body and a refill installed in the pen body, a spring and a pressing mechanism, the pressing mechanism includes a pressing head, a rotating wheel located between the pressing head and the refill, a plurality of guide rails distributed in an annular shape at equal intervals on the outside of the rotating wheel, and an annular stopper located below the plurality of guide rails, the plurality of guide rails and the stopper are fixed in the pen body, a guide slot is formed between two adjacent guide rails, a plurality of sliders are provided on the outer peripheral surface of the rotating wheel, and the plurality of sliders are slidably matched in the plurality of guide slots one by one. Since the pressing head of the aforementioned pressing mechanism has only one and is set at the top, the method of controlling the refill to retract is relatively simple, and when the pressing head falls off or fails, the refill cannot be controlled to be recovered, which is relatively inconvenient. Utility Model Content

[0004] Therefore, it is necessary to provide a key pen. The existing key pen usually sets the pressing mechanism at the top of the pen barrel, and the method of controlling the retraction of the pen core is relatively simple. In addition, when the pressing head falls off or fails, the pen core cannot be retracted, which is a relatively inconvenient problem to solve.

[0005] To achieve the above-mentioned purpose, the utility model provides a key pen, comprising a pen holder, a spring arranged in the pen holder, a pen core and a pressing mechanism, wherein the spring is arranged between the inner end of the pen holder and the outer end of the pen core, and the spring is used to provide an elastic force for causing the pen core to retract upward along the axis direction of the pen holder, and the pressing mechanism comprises a stopper, a rotating wheel and a movable part, wherein the movable part is moved along the axis direction of the pen holder by an external force and pushes the rotating wheel to rotate forwardly by a certain angle, and each rotation of the rotating wheel cooperates with the stopper to switch the pen core between an extended state and a retracted state;

[0006] A ring is also provided on the outside of the pen barrel, a first protrusion is provided on the inner side of the ring, and an oblique opening is provided on the pen barrel, through which the first protrusion passes. When the pen core is in an extended state, the ring rotates in the reverse direction to drive the first protrusion to push the rotating wheel to rotate in the reverse direction, so that the pen core switches from an extended state to a retracted state.

[0007] Furthermore, a plurality of second protrusions and a plurality of third protrusions are evenly arranged along the circumferential direction of the rotating wheel, the second protrusions are arranged at the upper part of the rotating wheel, and the third protrusions are arranged at the lower part of the rotating wheel. The second protrusions are engaged in or released from the stop portion as the rotating wheel rotates, so that the pen core switches between the extended state and the retracted state.

[0008] Furthermore, a first inclined surface and a second inclined surface are provided at the bottom of the stop portion, and both the first inclined surface and the second inclined surface are inclined from bottom to top along the positive rotation direction of the rotating wheel, and the end of the first inclined surface is higher than the beginning of the second inclined surface.

[0009] Furthermore, a slide rail groove is formed between two adjacent stop parts, a fourth protrusion is provided on the movable part, and the fourth protrusion slides in the slide rail groove. When the pen core switches from an extended state to a retracted state, the second protrusion slides into the slide rail groove.

[0010] Furthermore, a third inclined surface matched with the first inclined surface and the second inclined surface is provided on the top of the second protrusion; and / or

[0011] A fourth inclined surface is provided on the top of the third protrusion, and the fourth inclined surface is inclined from bottom to top along the positive rotation direction of the rotating wheel.

[0012] Furthermore, a tooth-shaped structure is provided at the bottom end of the movable part.

[0013] Furthermore, the pen holder comprises an upper rod and a lower rod, and the upper rod and the lower rod are detachably fixedly connected.

[0014] Furthermore, a support ring is provided on the outer wall of the pen holder, and the support ring is used to support the sleeve ring; and / or

[0015] The invention also comprises a marking part, and the marking part is arranged on the sleeve ring.

[0016] Furthermore, a pen clip is included, and the top end of the pen clip is hinged to the pen shaft.

[0017] Furthermore, a pen cap is also included, and the pen cap is arranged on the top of the pressing mechanism.

[0018] Different from the prior art, the above technical solution is achieved by providing a ring on the upper part of the pen shaft, and providing a first protrusion that passes through the pen shaft on the inner wall of the ring. The ring is rotated to drive the first protrusion to push the rotating wheel in the pressing mechanism to rotate in the opposite direction. During the reverse rotation, the rotating wheel cooperates with the stop part and the movable part in the pressing mechanism to retract the pen core into the pen shaft, that is, the pen core is switched from an extended state to a retracted state, thereby providing an additional operation method for retracting the pen core, improving practicality and convenience, and bringing a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the process of the sleeve controlling the retracting of the pen core according to the specific implementation method;

[0020] Figure 2 It is a structural stereogram of the key pen described in the specific implementation method;

[0021] Figure 3 It is a three-dimensional exploded view of the structure of the key pen described in the specific implementation method;

[0022] Figure 4 It is a three-dimensional exploded partial enlarged view of the structure of the key pen described in the specific implementation method;

[0023] Figure 5 It is a structural stereogram of the collar described in the specific implementation method;

[0024] Figure 6 It is a partial structural front view of the button pen described in the specific implementation method.

[0025] Description of reference numerals:

[0026] 1. Pen barrel; 101. Bevel; 11. Upper rod; 12. Lower rod; 13. Support ring; 14. Identification part; 15. Pen clip; 16. Pen cap; 2. Spring; 3. Pen core; 40. Stop part; 401. First inclined surface; 402. Second inclined surface; 41. Rotating wheel; 412. Second protrusion; 413. Third protrusion; 42. Movable part; 421. Toothed structure; 424. Fourth protrusion; 43. Slide rail groove; 50. Ring; 501. First protrusion. DETAILED DESCRIPTION

[0027] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0028] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0029] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0030] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in a logical relationship of "or".

[0031] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0032] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0033] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0034] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0035] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0036] See also Figures 1 to 6The present embodiment provides a key pen, comprising a pen holder 1, a spring 2, a pen core 3 and a pressing mechanism arranged in the pen holder 1. The pen holder 1 is the outer shell of a conventional key pen, which is hollow and has two openings at both ends. The bottom opening is smaller for the pen core 3 to pass through, and the top opening is larger for the top of the pressing mechanism to pass through. The pen holder 1 can be made of metal or plastic. The spring 2 is arranged between the inner end of the pen barrel 1 and the outer end of the pen core 3. Specifically, the spring 2 can be placed at the inner bottom end of the pen barrel 1, and the corresponding lower part of the pen core 3 can be provided with a corresponding structure to press against the top end of the spring 2. For example, the pen core 3 is designed to be narrow at the bottom and wide at the top, and a step is formed at the transition between the upper and lower parts, and the step can press against the top end of the spring 2, or a protrusion is provided on the side of the pen core 3, and the protrusion is used to press against the spring 2; on the other hand, the spring 2 can also be placed at the inner upper end of the pen barrel 1. In this case, it is necessary to provide protrusions on the inner wall of the pen barrel 1 and the pen core 3 to press against the two ends of the spring 2 respectively. In the relative movement between the pen core 3 and the pen barrel 1, the pen barrel 1 is stationary. At this time, when the pen core 3 is pushed downward by the pressing mechanism, the spring 2 is compressed, so that the spring 2 obtains elastic potential energy. When the limit on the pen core 3 is removed, the spring 2 can provide an elastic force to make the pen core 3 retract upward along the axial direction of the pen barrel 1. The structure and working principle of the pressing mechanism can refer to the structure of the existing key pen. Specifically in this embodiment, the pressing mechanism includes a stopper 40, a rotating wheel 41 and a movable part 42. The movable part 42 is moved along the axis direction of the pen shaft 1 by an external force and pushes the rotating wheel 41 to rotate forward by a certain angle. Each rotation of the rotating wheel 41 cooperates with the stopper 40 to switch the pen core 3 between the extended state and the retracted state. Figure 1For example, the bottom of the stop portion 40 is provided with a first inclined surface 401 and a second inclined surface 402, both of which are inclined from bottom to top along the positive rotation direction of the rotating wheel 41, and the end of the first inclined surface 401 is higher than the beginning of the second inclined surface 402, and the first inclined surface 401 and the second inclined surface 402 form an oblique tooth structure 421, and there are multiple stop portions 40, and the multiple stop portions 40 are evenly spaced to form multiple slide rail grooves 43, that is, a slide rail groove 43 is formed between two adjacent stop portions 40, and the slide rail groove 43 is a through groove with a bottom opening. The movable part 42 is provided with a fourth protrusion 424, and the fourth protrusion 424 can slide in the slide rail groove 43, so that the movable part 42 is arranged on the inner side of the stop part 40, and the fourth protrusion 424 is limited by the slide rail groove 43 to only move in the axial direction of the pen body 1, so that the movable part 42 can only move in the axial direction of the pen body 1 relative to the stop part 40. The bottom end of the movable part 42 is provided with a tooth structure 421, and the rotating wheel 41 is evenly provided with a plurality of second protrusions 412 and a plurality of third protrusions 413 along the circumferential direction. The second protrusions 412 are provided at the upper part of the rotating wheel 41, and the third protrusions 413 are provided at the lower part of the rotating wheel 41. The second protrusions 412 are inserted into or removed from the stopper 40 as the rotating wheel 41 rotates, so that the pen core 3 switches between the extended state and the retracted state. When the pen core 3 switches from the extended state to the retracted state, the second protrusions 412 can slide into the slide rail groove 43, thereby providing a moving space for the pen core 3 to retract into the pen holder 1. It should be noted that the top of the second protrusion 412 is provided with a third inclined surface that matches the first inclined surface 401 and the second inclined surface 402. Taking the specific structure of the aforementioned pressing mechanism as an example, the working principle is discussed as follows: For the sake of convenience, the default state of the pen is that the pen tip is vertically downward, then the axial direction of the pen shaft 1 is the vertical direction, and the default positive rotation direction of the rotating wheel 41 is the clockwise direction.When the pen core 3 is in the extended state, the rotating wheel 41 is pressed against the bottom of the stopper 40 under the elastic force of the spring 2, that is, the second protrusion 412 is stuck at the end of the first inclined surface 401. At this time, a downward force is applied to the pressing mechanism, and the force pushes the movable part 42 to slide downward relative to the stopper 40 until the toothed structure 421 at the bottom contacts the third inclined surface at the top of the second protrusion 412. At this time, the movable part 42 continues to slide downward. Since the slide rail groove 43 restricts the movable part 42 from rotating through the fourth protrusion 424, the third inclined surface at the top of the second protrusion 412 can only move relative to the movable part 42. The toothed structure 421 slides, so that the rotating wheel 41 rotates a certain angle in the clockwise direction. After the rotating wheel 41 rotates, the third inclined surface at the top of the second protrusion 412 is located directly below the second inclined surface 402. At this time, the force applied to the pressing mechanism is removed, and the spring 2 releases the elastic potential energy to push up the refill 3. The refill 3 drives the rotating wheel 41 to move upward until the second protrusion 412 contacts the stopper 40. Through the relative sliding of the second inclined surface 402 and the third inclined surface, the rotating wheel 41 rotates until the second protrusion 412 slides into the slide rail groove 43, and continues to move upward under the elastic force of the spring 2 until the refill 3 is 3 is completely retracted into the pen holder 1, and this is the process of the pen core 3 switching from the extended state to the retracted state; on the other hand, when the pen core 3 is in the retracted state, the rotating wheel 41 is kept at the top position under the elastic force of the spring 2 and the limit of the guide groove, and at this time, a downward force is applied to the pressing mechanism, which pushes the movable part 42, and the toothed structure 421 at the bottom of the movable part 42 pushes the second protrusion 412 of the rotating wheel 41 to move downward. When the second protrusion 412 completely leaves the slide groove 43, the toothed structure 421 at the bottom of the movable part 42 interacts with the second inclined surface 402, so that the second protrusion 412 drives the wheel 41 to rotate in the clockwise direction. After the rotation, the third slope at the top of the second protrusion 412 is located directly below the head end of the first slope 401. At this time, the force applied to the pressing mechanism is removed, and the spring 2 releases the elastic potential energy, pushing up the refill 3. The refill 3 drives the wheel 41 to move upward until the second protrusion 412 contacts the stopper 40. Through the relative sliding of the first slope 401 and the third slope, the wheel 41 rotates until the wheel 41 hits the bottom of the stopper 40, that is, the second protrusion 412 is stuck at the end of the first slope 401, thereby completing the process of switching the refill 3 from the retracted state to the extended state. By repeatedly applying a downward force to the pressing mechanism, the extended state and the retracted state of the refill 3 can be switched.

[0037] On the basis of the above structure, the outer side of the pen holder 1 is also provided with a sleeve ring 50, the inner side of the sleeve ring 50 is provided with a first protrusion 501, the pen holder 1 is provided with an oblique opening 101, the oblique opening 101 is inclined from bottom to top along the positive rotation direction of the rotating wheel 41, the first protrusion 501 passes through the oblique opening 101, when the pen core 3 is in the extended state, the sleeve ring 50 rotates in the reverse direction to drive the first protrusion 501 to push the rotating wheel 41 to rotate in the reverse direction, so that the pen core 3 switches from the extended state to the retracted state. For details, refer to Figure 1 When the pen core 3 is in the extended state, the third protrusion 413 presses against the counterclockwise side of the first protrusion 501. At this time, the first protrusion 501 is located at the clockwise end of the bevel 101. At this time, a counterclockwise rotation force is applied to the collar 50, and the collar 50 drives the first protrusion 501 to rotate counterclockwise. The first protrusion 501 pushes the third protrusion 413 to rotate counterclockwise, and the third protrusion 413 drives the rotating wheel 41 to rotate counterclockwise. At this time, the third inclined surface of the second protrusion 412 and the first inclined surface 401 of the stopper 40 slide against each other, that is, the second protrusion 412 moves from the third inclined surface 401 of the stopper 40 to the third inclined surface 401 of the stopper 40. The end of an inclined surface 401 slides toward the head end. When the first protrusion 501 rotates to the counterclockwise end of the inclined mouth 101, the second protrusion 412 slides out of the head end of the first inclined surface 401. At this time, in the vertical projection, the second protrusion 412 and the first inclined surface 401 have no overlapping surface. During this process, the spring 2 always applies an upward elastic force to the rotating wheel 41 through the pen core 3. When the second slider slides out of the head end of the first inclined surface 401, it immediately slides upward into the guide groove, thereby retracting the pen core 3. That is, through the ring 50, the pen core 3 can also be switched from the extended state to the retracted state. It should be noted that a fourth inclined plane is provided on the top of the third protrusion 413, and the fourth inclined plane is inclined from bottom to top along the positive rotation direction of the rotating wheel 41. When the pen core 3 is switched from the retracted state to the extended state, more movable space is made available by the fourth inclined plane, so that during the rotation of the rotating wheel 41, the third protrusion 413 is not easily obstructed by the first protrusion 501, thereby avoiding affecting the rotation of the rotating wheel 41, and making the state switching of the pen core 3 smoother.

[0038] It should be noted that the first protrusion may be one or more protrusions. Figure 3-6 The number of the first protrusions is two, and the two first protrusions are centrally symmetrically arranged. Correspondingly, the number of the oblique openings is two, and the two oblique openings are also centrally symmetrically arranged. The positions of the first protrusions and the oblique openings should match the position height of the third protrusion of the rotating wheel in the pressing mechanism.

[0039] The present invention provides a sleeve 50 on the upper part of the pen barrel 1, and provides a first protrusion 501 penetrating the pen barrel 1 on the inner wall of the sleeve 50. The sleeve 50 is rotated to drive the first protrusion 501 to push the rotating wheel 41 in the pressing mechanism to rotate in the opposite direction. The rotating wheel 41 cooperates with the stopper 40 and the movable part 42 in the pressing mechanism during the reverse rotation to retract the pen core 3 into the pen barrel 1, that is, the pen core 3 is switched from the extended state to the retracted state, thereby providing an additional operation method for retracting the pen core 3, improving practicality and convenience, and bringing a better user experience.

[0040] In some embodiments, the pen holder 1 includes an upper rod 11 and a lower rod 12, and the upper rod 11 and the lower rod 12 are detachably fixedly connected. The detachable fixed connection may be a threaded connection, a buckle slot connection, a slider slot connection, etc. By configuring the pen holder 1 as a combination of the upper rod 11 and the lower rod 12, assembly is facilitated.

[0041] In some embodiments, a support ring 13 is provided on the outer wall of the pen barrel 1, and the support ring 13 is used to support the ring 50. The support ring 13 can be integrally formed by extending outward from the outer wall of the pen barrel 1. The support ring 13 provides support for the bottom of the ring 50 to reduce the interaction force between the first protrusion 501 and the bevel 101 to avoid excessive wear during long-term use. The support ring 13 can also block the ring 50 to prevent the user from operating the ring 50 too hard and causing it to fall out.

[0042] In some embodiments, a marking portion 14 is further included. The marking portion 14 is disposed on the ring 50. The marking portion 14 may be square, diamond or circular, etc. The marking portion 14 may be provided with a pattern or text, etc.

[0043] In some embodiments, a pen clip 15 is further included, and the top end of the pen clip 15 is hinged to the pen barrel 1. It should be noted that the position of the pen clip 15 should avoid the collar 50 so as not to block the rotation of the collar 50 and the user's operation of the collar 50. For example, the pen clip 15 can be arranged above the collar 50.

[0044] In some embodiments, a pen cap 16 is further included, and the pen cap 16 is arranged on the top of the pressing mechanism. The pen cap 16 can be fixed with the top of the pressing mechanism by snapping. By providing the pen cap 16, it is convenient to increase the force-bearing area of ​​the top of the pressing mechanism, improve the comfort of the hand pressing the pressing mechanism, and facilitate assembly.

[0045] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structural or equivalent process changes made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the utility model patent.

Claims

1. A key pen, characterized in that: The pen comprises a pen holder, a spring arranged in the pen holder, a pen core and a pressing mechanism, wherein the spring is arranged between the inner end of the pen holder and the outer end of the pen core, and the spring is used to provide an elastic force for causing the pen core to retract upward along the axis direction of the pen holder, and the pressing mechanism comprises a stopper, a rotating wheel and a movable part, wherein the movable part is moved along the axis direction of the pen holder by an external force and pushes the rotating wheel to rotate forwardly by a certain angle, and each rotation of the rotating wheel cooperates with the stopper to switch the pen core between an extended state and a retracted state; A ring is also provided on the outside of the pen barrel, a first protrusion is provided on the inner side of the ring, and an oblique opening is provided on the pen barrel, through which the first protrusion passes. When the pen core is in an extended state, the ring rotates in the reverse direction to drive the first protrusion to push the rotating wheel to rotate in the reverse direction, so that the pen core switches from an extended state to a retracted state.

2. A key pen according to claim 1, characterized in that: A plurality of second protrusions and a plurality of third protrusions are evenly arranged on the rotating wheel along the circumferential direction. The second protrusions are arranged on the upper part of the rotating wheel, and the third protrusions are arranged on the lower part of the rotating wheel. The second protrusions are engaged in or separated from the stop portion as the rotating wheel rotates, so that the pen core switches between the extended state and the retracted state.

3. A key pen according to claim 2, characterized in that: A first inclined surface and a second inclined surface are provided at the bottom of the stopper, and both the first inclined surface and the second inclined surface are inclined from bottom to top along the positive rotation direction of the rotating wheel, and the end of the first inclined surface is higher than the beginning of the second inclined surface.

4. A key pen according to claim 3, characterized in that; A slide rail groove is formed between two adjacent stop parts, and a fourth protrusion is provided on the movable part. The fourth protrusion slides in the slide rail groove. When the pen core switches from an extended state to a retracted state, the second protrusion slides into the slide rail groove.

5. A key pen according to claim 4, characterized in that: The top of the second protrusion is provided with a third inclined surface matched with the first inclined surface and the second inclined surface; and / or A fourth inclined surface is provided on the top of the third protrusion, and the fourth inclined surface is inclined from bottom to top along the positive rotation direction of the rotating wheel.

6. A key pen according to claim 5, characterized in that: The bottom end of the movable part is provided with a tooth structure.

7. A key pen according to any one of claims 1 to 6, characterized in that: The pen holder comprises an upper rod and a lower rod, and the upper rod and the lower rod are detachably fixedly connected.

8. A key pen according to any one of claims 1 to 6, characterized in that: A support ring is provided on the outer wall of the pen holder, and the support ring is used to support the sleeve ring; and / or The invention also comprises a marking part, and the marking part is arranged on the sleeve ring.

9. A key pen according to any one of claims 1 to 6, characterized in that: The utility model also comprises a pen clip, the top end of which is hinged on the pen shaft.

10. A key pen according to any one of claims 1 to 6, characterized in that: Also included is a pen cap, which is arranged on the top of the pressing mechanism.

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