Pressing pen with external spring

Abstract

This utility model relates to an externally spring-loaded press-button pen, belonging to the technical field of interactive products. The press-button pen includes a shell, a refill, a transmission mechanism, and a cap. A spring is located at the upper end of the shell and can be compressed axially. The refill is located inside the shell and is positioned along its length. The transmission mechanism drives the refill to move axially relative to the shell; the upper end of the transmission mechanism is located inside the spring. The cap is connected to the transmission mechanism and located outside the shell, abutting against the upper end of the spring. When the lower end of the refill extends beyond the lower end of the shell, the spring is compressed; when the lower end of the refill retracts into the shell, the spring returns to its original position. By placing the spring at the upper end of the shell, it not only replaces the function of a traditional built-in spring but also makes the spring visible, allowing for variations in its shape and color, increasing the product's appeal and visual appeal.

Description

Technical Field

[0001] This utility model belongs to the field of bouncy product technology, and in particular relates to a spring-loaded press pen. Background Technology

[0002] Press-type pens, such as ballpoint pens, mainly consist of a pressing head, a transmission mechanism, a spring, and a pen barrel. The axial force of the pressing head drives the transmission mechanism to extend and retract the pen tip. The spring, as a key elastic reset component, directly affects the pressing feel, reset sensitivity, and structural stability.

[0003] As people's demands for the aesthetics and fun of ballpoint pens increase, they often try to enhance these aspects by changing the shape and color of the pen barrel. However, the variations in pen barrel shape and color are limited and can no longer adequately satisfy people's desire for both aesthetics and fun in ballpoint pens.

[0004] In existing ballpoint pens, the spring is generally designed to be built-in, meaning the spring is housed entirely within a hollow cavity inside the pen barrel. This makes it impossible to add interest to the ballpoint pen by changing the shape or color of the spring.

[0005] Therefore, designing a ballpoint pen with an externally mounted spring is of great significance. Utility Model Content

[0006] In view of the shortcomings of the related technologies, this utility model provides a spring-external press pen. By placing the spring at the upper end of the outer shell, the spring is external, which not only replaces the function of the original built-in spring, but also makes the spring visible. The shape and color of the spring can be changed, increasing the fun and visual experience of the product.

[0007] This utility model provides a spring-loaded press pen, comprising: shell; The pen refill is located inside the outer casing and is positioned along the length of the outer casing. A transmission mechanism is used to drive the pen refill to move axially relative to the outer shell; the upper end of the transmission mechanism is located outside the outer shell. The pressure cap is connected to the transmission mechanism and located outside the housing; A spring is located at the upper end of the outer shell and sleeved on the upper end of the transmission mechanism; the upper end of the spring abuts against the pressure cap, and the spring can be compressed along the axial direction of the outer shell. The transmission mechanism can reciprocate between a first position and a second position along the axial direction of the outer shell. When the transmission mechanism is in the first position, the lower end of the pen refill extends out of the lower end of the outer shell, and the spring is compressed. When the transmission mechanism is in the second position, the lower end of the pen refill retracts into the outer shell, and the spring returns to its original position.

[0008] In some embodiments, the spring is integrally formed with the housing.

[0009] In some embodiments, the upper end of the housing is provided with a limiting part, the spring is sleeved on the upper end of the housing, and the lower end of the spring abuts against the limiting part, so that the spring and the housing are detachably connected.

[0010] In some embodiments, the transmission mechanism includes a first linkage and a second linkage. The first linkage cooperates with the outer shell, and the second linkage is connected to the pen refill and sleeved inside the first linkage. The pressure cap is connected to the first linkage or the second linkage.

[0011] In some embodiments, the lower end of the second linkage is provided with a connecting platform, the upper end of the connecting platform abuts against the lower end of the first linkage, and the upper end of the pen refill is inserted into the connecting platform so that the pen refill and the second linkage are connected to each other.

[0012] In some embodiments, the inner wall of the housing is provided with a first slot and a second slot; the first slot and the second slot are arranged along the circumference of the housing and the top of the first slot is located below the top of the second slot; The outer periphery of the first linkage component is provided with a first protrusion. When the first protrusion abuts against the top of the first slot, the transmission mechanism is in the first position; when the first protrusion abuts against the top of the second slot, the transmission mechanism is in the second position.

[0013] In some embodiments, the top of the pen refill is provided with a connection port, and the lower end of the second linkage is provided with a connecting post. The connecting post is inserted into the connection port so that the pen refill and the second linkage are connected to each other.

[0014] In some embodiments, the upper end of the second linkage is located inside the first linkage, and the upper end of the first linkage extends out of the outer shell and connects with the pressure cap. Alternatively, the second linkage passes through the first linkage and is located outside the housing, connecting to the pressure cap.

[0015] In some embodiments, the housing includes a first housing and a second housing, the lower end of the first housing is threadedly connected to the upper end of the second housing, and a spring is disposed at the upper end of the first housing.

[0016] In some embodiments, the lower end of the pen refill is a tip, the lower end of the outer casing is a tapered structure, and the opening size of the lower end of the outer casing is larger than the outer diameter of the tip and smaller than the outer diameter of other parts of the pen refill.

[0017] Based on the above technical solution, the externally mounted spring press pen in this utility model embodiment places the spring at the upper end of the outer shell, so that the spring is external. This not only replaces the function of the original built-in spring, but also makes the spring visible. The shape and color of the spring can be changed, increasing the fun and visual experience of the product. The overall structure is simple and beautiful. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the externally spring-loaded press pen of this utility model, in which the spring and the outer shell are separate structures. Figure 2 This is a schematic diagram of the structure of the externally spring-loaded press pen of this utility model, in which the spring and the outer shell are separate structures and the pen core is retracted into the outer shell; Figure 3 for Figure 2 Enlarged view of a section at point A in the middle; Figure 4 This is a schematic diagram of one embodiment of the externally spring-loaded press pen of the present invention, in which the pen spring and the outer shell are separate structures and the pen core extends out of the outer shell at the lower end of the pen core; Figure 5 This is a schematic diagram of the structure of the externally spring-loaded press pen of this utility model, in which the spring and the outer shell are an integral structure; Figure 6 This is a schematic diagram of one embodiment of the externally spring-loaded press pen of this utility model, in which the spring and the outer shell are an integral structure and the pen core is retracted into the outer shell. Figure 7 for Figure 6 Enlarged view of a section at point B in the middle; Figure 8 This is a schematic diagram of the structure of the pen core, transmission mechanism and pressure cap connected in one embodiment of the spring-loaded press pen of this utility model. Figure 9 This is a schematic diagram of the structure of the first linkage component in one embodiment of the externally spring-loaded press pen of this utility model; Figure 10 This is a schematic diagram of the structure of the second linkage component in one embodiment of the externally spring-loaded press pen of this utility model; Figure 11 This is a schematic diagram of the outer shell structure in one embodiment of the spring-loaded press pen of this utility model; Figure 12 This is a schematic diagram of another embodiment of the spring-external press pen of this utility model, in which the spring and the outer shell are separate structures. Figure 13 This is a schematic diagram of another embodiment of the externally spring-loaded press pen of this utility model, in which the spring and the outer shell are separate structures and the pen core is retracted into the outer shell; Figure 14 for Figure 13 Enlarged view of a section at point C; Figure 15 This is a schematic diagram of the structure of the pen core connected to the transmission mechanism and the pressure cap in another embodiment of the spring-loaded press pen of this utility model. Figure 16 This is a schematic diagram of the structure of the first linkage component and the second linkage component when they are connected to each other in one embodiment of the spring-loaded press pen of this utility model; Figure 17 This is a schematic diagram of the structure of the first linkage component in one embodiment of the externally spring-loaded press pen of this utility model; Figure 18 This is a schematic diagram of the structure of the second linkage component in one embodiment of the externally spring-loaded press pen of this utility model; Figure 19 This is a schematic diagram of the sleeve structure in one embodiment of the externally spring-loaded press pen of this utility model.

[0019] In the diagram: 1. Outer shell; 2. Spring; 3. Pressure cap; 4. Pen refill; 5. First linkage component; 6. Second linkage component; 7. Sleeve; 11. First shell; 12. Second shell; 111. First card slot; 112. Second card slot; 41. Blocking part; 51. First protrusion; 52. Fourth slot; 53. Third protrusion; 61. Connecting platform; 62. Connecting column; 63. Second protrusion; 71. Slide groove; 72. Third slot. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0022] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] As attached Figures 1-5 As shown in an illustrative embodiment of the externally spring-loaded press-button pen of this utility model, the externally spring-loaded press-button pen includes a shell 1, a pen core 4, a transmission mechanism, a pressure cap 3, and a spring 2; the shell 1 provides the overall appearance of the externally spring-loaded press-button pen; a cavity is defined within the shell 1 to accommodate components such as the pen core 4, the transmission mechanism, and the pressure cap 3; the pen core 4 is disposed within the shell 1 and is arranged along the length direction of the shell 1; the transmission mechanism is used to drive the pen core 4 to move axially relative to the shell 1; the upper end of the transmission mechanism is located outside the shell 1; The lower end of the actuator is connected to the pen refill 4, and the pressure cap 3 is connected to the transmission mechanism and located outside the outer shell 1; the spring 2 is located at the upper end of the outer shell 1 and sleeved on the upper end of the transmission mechanism; the upper end of the spring 2 abuts against the pressure cap 3, and the spring 2 can be compressed along the axial direction of the outer shell 1; the transmission mechanism can reciprocate between the first position and the second position along the axial direction of the outer shell 1; when the transmission mechanism is in the first position, the lower end of the pen refill 4 extends out of the lower end of the outer shell 1, and the spring 2 is compressed; when the transmission mechanism is in the second position, the lower end of the pen refill 4 retracts into the outer shell 1, and the spring 2 returns to its original position.

[0025] It should be noted that the first position is located closer to the lower end of the outer shell 1 than the second position. Pressing the cover 3 will cause the cover 3 to drive the pen refill 4 downward through the transmission mechanism, thereby extending the pen refill 4.

[0026] In some embodiments of this application, such as Figures 1-3 As shown, spring 2 is detachably connected to housing 1; housing 1 has a limiting part at its upper end, spring 2 is sleeved on the upper end of housing 1, and the lower end of spring 2 abuts against the limiting part, so that spring 2 and housing 1 are detachably connected. Spring 2 can be a metal spring 2 or a plastic spring 2.

[0027] In other embodiments of this application, such as Figures 5-7 , Figures 12-14 As shown, the spring 2 and the outer shell 1 are an integral structure, and the spring 2 and the outer shell 1 are integrally molded. The spring 2 and the outer shell 1 are preferably achieved by injection molding so that the spring 2 is a plastic spring 2.

[0028] like Figure 3 As shown, the outer periphery of the pressure cap 3 is provided with a blocking part 41, which abuts against the upper end of the spring 2.

[0029] like Figures 1-2 , Figure 4 As shown, the lower end of the pen refill 4 is a pointed tip, and the lower end of the outer shell 1 is a tightening structure. The opening size of the lower end of the outer shell 1 is larger than the outer diameter of the pointed tip and smaller than the outer diameter of other parts of the pen refill 4.

[0030] In some embodiments, such as Figures 1-2 , Figure 4 As shown, the outer shell 1 includes a first shell 11 and a second shell 12. The lower end of the first shell 11 is threadedly connected to the upper end of the second shell 12. The spring 2 is located at the upper end of the first shell 11 so as to facilitate the placement of components such as the pen refill 4, the transmission mechanism and the pressure cap 3 inside the outer shell 1 or to remove them from the outer shell 1.

[0031] like Figure 3 , Figure 8 and Figure 16 As shown, the transmission mechanism includes a first linkage 5 and a second linkage 6. The first linkage 5 cooperates with the outer shell 1, and the second linkage 6 is connected to the pen refill 4 and is sleeved inside the first linkage 5. The pressure cap 3 is connected to the first linkage 5 or the second linkage 6.

[0032] In some embodiments of this application, such as Figure 8 As shown, the second linkage 6 passes through the first linkage 5 and is located outside the outer shell 1 and connected to the pressure cover 3. The pressure cover 3 abuts against the upper end of the first linkage 5. Pressing the pressure cover 3 causes the pressure cover 3 to drive the first linkage 5 and the second linkage 6 to move downward, thereby driving the pen refill 4 to move axially, realizing the extension and retraction of the lower end of the pen refill 4.

[0033] In other embodiments of this application, such as Figure 16As shown, the upper end of the first linkage 5 extends out of the outer shell 1 and is connected to the pressure cover 3. The upper end of the second linkage 6 is located inside the first linkage 5, so that the pressure cover 3 drives the second linkage 6 to move downward through the first linkage 5, thereby driving the pen refill 4 to move axially, realizing the extension and retraction of the lower end of the pen refill 4.

[0034] In some embodiments of this application, such as Figure 8 and Figure 10 As shown, the lower end of the second linkage 6 is provided with a connecting platform 61, the upper end of the connecting platform 61 abuts against the lower end of the first linkage 5, and the upper end of the pen refill 4 is inserted into the connecting platform 61 so that the pen refill 4 and the second linkage 6 are connected to each other.

[0035] In other embodiments of this application, such as Figure 14 and Figure 16 As shown, the top of the pen refill 4 is provided with a connection port, and the lower end of the second linkage 6 is provided with a connecting post 62. The connecting post 62 is inserted into the connection port so that the pen refill 4 and the second linkage 6 are connected to each other.

[0036] To ensure that the transmission mechanism can be reliably positioned in the first or second position, a locking structure is provided between the outer casing 1 and the transmission mechanism. When the transmission mechanism is in the first position, pressing the cover 3 can release the locking of the outer casing 1 to the transmission mechanism in the first position, allowing the transmission mechanism to move to the second position. When the transmission mechanism is in the second position, pressing the cover 3 can release the locking of the outer casing 1 to the transmission mechanism in the second position, allowing the transmission mechanism to move to the first position under the rebound action of the spring 2.

[0037] In some embodiments of this application, such as Figure 11 As shown, the inner wall of the outer casing 1 is provided with a first slot 111 and a second slot 112. The openings of the first slot 111 and the second slot 112 are respectively positioned facing the lower end of the outer casing 1. The first slot 111 and the second slot 112 are arranged around the circumference of the outer casing 1, and the top of the first slot 111 is located below the top of the second slot 112. The outer periphery of the first linkage 5 is provided with a first protrusion 51. When the first protrusion 51 abuts against the first slot 111, the transmission mechanism is in the first position; when the first protrusion 51 abuts against the second slot 112, the transmission mechanism is in the second position.

[0038] It should be noted that the first slot 111, the second slot 112, and the first protrusion 51 together form a locking structure between the transmission mechanism and the outer casing 1.

[0039] It should also be noted that the top of the first slot 111 and the top of the second slot 112 are both closed structures and have pointed corners, so that the first protrusion 51 abuts against the top of the first slot 111 and the top of the second slot 112. The top of the first protrusion 51 is also a pointed tip. Furthermore, the first slot 111 is provided with a first slot wall, which is inclined downward along the circumference of the outer shell 1; the second slot 112 is provided with a second slot wall, which is inclined downward along the circumference of the outer shell 1; wherein, the first slot wall and the second slot wall are inclined in the same direction; when the first protrusion 51 abuts against the first slot 111 and the second slot 112, the first protrusion 51 cooperates with the inclined surfaces of the first slot wall and the second slot wall respectively.

[0040] When the transmission mechanism is in the second position, pressing the cover 3 causes the first protrusion 51 to move downwards along the second groove wall, and the first linkage 5 to rotate circumferentially relative to the outer casing 1. When the first protrusion 51 moves to the lower end of the second groove wall, it disengages from the second slot 112. At this time, the spring 2 is compressed to its limit position. Releasing the cover 3 causes the spring 2 to rebound, and the first protrusion 51 enters the first slot 111, abutting against it. The transmission mechanism is in the first position, where the spring 2 rebounds a small distance and does not fully reset. Pressing the cover 3 again causes the first protrusion 51 to move downwards along the first groove wall. When the spring 2 is compressed to its limit position, releasing the cover 3 causes the spring 2 to rebound, and the first protrusion 51 enters the second slot 112, abutting against it. The transmission mechanism is in the second position, where the spring 2 rebounds a larger distance and resets.

[0041] It should be noted that during the extension and retraction of the pen refill 4, the pen refill 4 rotates circumferentially relative to the outer shell 1, and the pen refill 4 rotates in the same direction. Therefore, multiple first slots 111 and second slots 112 are provided, and the first slots 111 and second slots 112 are arranged at intervals along the circumference of the first shell 11 to ensure that the pen refill 4 can continuously complete the extension and retraction actions.

[0042] In other embodiments of this application, such as Figure 14 and Figure 15 As shown, a sleeve 7 is provided inside the outer casing 1. The sleeve 7 is detachably connected to the outer casing 1, and there is no relative movement between the sleeve 7 and the outer casing 1; Figure 19 As shown, the outer wall of the sleeve 7 is provided with a third retaining groove 72 and a sliding groove 71. The opening of the third retaining groove 72 is positioned facing the lower end of the outer casing 1, and the sliding groove 71 is positioned along the axial direction of the sleeve 7; as shown Figure 18 As shown, the outer periphery of the second linkage 6 is provided with a second protrusion 63, such as... Figure 17 As shown, the outer periphery of the first linkage 5 is provided with a third protrusion 53; when the second protrusion 63 abuts against the top of the third slot 72, the transmission mechanism is in the first position; when the third protrusion 53 abuts against the top of the slide groove 71, the transmission mechanism is in the second position; when the transmission mechanism is in the second position, the second protrusion 63 is also located in the slide groove 71.

[0043] It should be noted that the second protrusion 63, the third protrusion 53, the third slot 72 and the slide groove 71 together form a locking structure between the transmission mechanism and the outer casing 1.

[0044] It should also be noted that the openings of the slide groove 71 and the third slot 72 are respectively positioned facing the lower end of the outer casing 1, and the tops of the slide groove 71 and the third slot 72 are respectively closed, so that the second protrusion 63 can abut against the top of the third slot 72 and the third protrusion 53 can abut against the top of the slide groove 71; wherein, the top of the third slot 72 is a pointed structure, and the top of the second protrusion 63 is also a pointed tip.

[0045] The third slot 72 is provided with a third slot wall, which is inclined downward along the circumference of the outer shell 1; when the second protrusion 63 abuts against the third slot 72, the second protrusion 63 cooperates with the inclined surface of the third slot wall.

[0046] When the transmission mechanism is in the second position, pressing the cover 3 causes the second protrusion 63 and the third protrusion 53 to move downwards along the slide groove 71. When the spring 2 is compressed to its limit position, the second protrusion 63 disengages from the slide groove 71, while the third protrusion 53 remains within the slide groove 71. Releasing the cover 3 causes the spring 2 to rebound, and the second protrusion 63 enters the third retaining groove 72, abutting against it. The transmission mechanism is in the first position, at which point the spring 2 rebounds a small distance and does not fully reset. Pressing the cover 3 again causes the second protrusion 63 to move downwards along the wall of the third groove. When the spring 2 is compressed to its limit position, releasing the cover 3 causes the spring 2 to rebound, and the second protrusion 63 enters the slide groove 71. When the third protrusion 53 abuts against the top of the slide groove 71, the transmission mechanism is in the second position, at which point the spring 2 rebounds a larger distance and resets.

[0047] It should be noted that since the third protrusion 53 is always located in the slide groove 71, and the second protrusion 63 rotates around the sleeve 7, the second linkage 6 and the first linkage 5 rotate relative to each other; the lower end of the first linkage 5 is provided with a fourth slot 52, and the second protrusion 63 is provided in the fourth slot 52 so that the second linkage 6 and the first linkage 5 can be connected to each other.

[0048] It should also be noted that the thickness of the second protrusion 63 is greater than the wall thickness of the first linkage 5, so that the second protrusion 63 can cooperate with the fourth slot 52 and the third slot 72 at the same time. This is prior art in the field and will not be described in detail here.

[0049] Furthermore, it should be noted that the locking structure between the transmission mechanism and the outer shell 1, as well as the method of pressing to engage the transmission mechanism and the outer shell 1 at different positions, are existing technologies in the field. For example, they can be achieved using the engagement method between the slider, sleeve 7, and button disclosed in patent CN218807736U, which will not be elaborated here.

[0050] The aforementioned externally mounted spring-operated press pen, by placing the spring 2 at the upper end of the outer shell 1, not only replaces the function of the original built-in spring, but also makes the spring 2 visible, displaying its changes. The shape and color of the spring 2 can be changed, bringing more visual experience. Surface treatments such as color and printing can also be applied to the shape of the spring 2 to increase the product's appeal.

[0051] It should be noted that in this application, the connection between the spring 2 and the outer shell 1, the connection between the second linkage 6 and the pen refill 4, the cooperation between the first linkage 5 and the second linkage 6, and the locking structure between the transmission mechanism and the outer shell 1 can be combined to realize the extension and retraction of the pen refill 4 relative to the outer shell 1. These will not be described in detail here.

[0052] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0053] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A spring-loaded, externally mounted press-button pen, characterized in that, include: shell; The pen refill is disposed inside the outer casing, and the pen refill is arranged along the length direction of the outer casing; A transmission mechanism is used to drive the pen refill to move axially relative to the outer casing; the upper end of the transmission mechanism is located outside the outer casing; A pressure cap, which is connected to the transmission mechanism and located outside the housing; A spring is disposed at the upper end of the outer shell and sleeved on the upper end of the transmission mechanism; the upper end of the spring abuts against the pressure cap, and the spring can be compressed along the axial direction of the outer shell; The transmission mechanism can reciprocate between a first position and a second position along the axial direction of the outer shell; when the transmission mechanism is in the first position, the lower end of the pen refill extends out of the lower end of the outer shell, and the spring is compressed; when the transmission mechanism is in the second position, the lower end of the pen refill retracts into the outer shell, and the spring resets.

2. The externally spring-loaded press pen according to claim 1, characterized in that, The spring is integrally formed with the outer shell.

3. The externally spring-loaded press pen according to claim 1, characterized in that, The upper end of the outer casing is provided with a limiting part, the spring is sleeved on the upper end of the outer casing, and the lower end of the spring abuts against the limiting part, so that the spring and the outer casing are detachably connected.

4. The externally spring-loaded press pen according to claim 1, characterized in that, The transmission mechanism includes a first linkage component and a second linkage component. The first linkage component cooperates with the outer shell, and the second linkage component is connected to the pen refill. The second linkage component is sleeved inside the first linkage component. The pressure cap is connected to the first linkage component or the second linkage component.

5. The externally spring-loaded press pen according to claim 4, characterized in that, The lower end of the second linkage component is provided with a connecting platform, the upper end of the connecting platform abuts against the lower end of the first linkage component, and the upper end of the pen refill is inserted into the connecting platform so that the pen refill and the second linkage component are connected to each other.

6. The externally spring-loaded press pen according to claim 5, characterized in that, The inner wall of the outer casing is provided with a first slot and a second slot; the first slot and the second slot are arranged along the circumference of the outer casing and the top of the first slot is located below the top of the second slot; The first linkage component has a first protrusion on its outer periphery. When the first protrusion abuts against the top of the first slot, the transmission mechanism is in the first position; when the first protrusion abuts against the top of the second slot, the transmission mechanism is in the second position.

7. The externally spring-loaded press pen according to claim 4, characterized in that, The pen refill has a connection port at its top, and the lower end of the second linkage has a connecting post. The connecting post is inserted into the connection port so that the pen refill and the second linkage are connected to each other.

8. The externally spring-loaded press pen according to claim 4, characterized in that, The upper end of the second linkage component is located inside the first linkage component, and the upper end of the first linkage component extends out of the outer shell and connects to the pressure cover. Alternatively, the second linkage passes through the first linkage and is located outside the housing, connecting to the pressure cap.

9. The externally spring-loaded press pen according to claim 1, characterized in that, The outer casing includes a first casing and a second casing, with the lower end of the first casing threadedly connected to the upper end of the second casing, and the spring disposed at the upper end of the first casing.

10. The externally spring-loaded press pen according to claim 1, characterized in that, The lower end of the pen refill is a pointed tip, and the lower end of the outer shell is a tapered structure. The opening size of the lower end of the outer shell is larger than the outer diameter of the pointed tip and smaller than the outer diameter of the middle part of the pen refill.

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