Push-pull writing instrument

Abstract

The utility model discloses a push-pull type writing pen, which comprises a first pen barrel, a first guide groove is formed on the first pen barrel, a first pen core is arranged in the first pen barrel, a second pen barrel, a first connecting structure, one end of the first connecting structure is connected with the second pen barrel, and the other end of the first connecting structure is connected with the first pen core through the first guide groove, wherein, along the first guide groove, in the process of relative reciprocating motion of the first pen barrel and the second pen barrel, the second pen barrel drives the pen head of the first pen core to extend into or out of the first pen barrel through the first connecting structure. Under the guidance of the first guide groove, the first pen barrel or the second pen barrel is pushed and pulled, so that the first pen barrel and the second pen barrel are subjected to relative reciprocating motion, the pen head of the first pen core is retracted into the first pen barrel through the first connecting structure, the pen head of the first pen core is extended out of the first pen barrel through the first connecting structure, and the user can write. The writing pen has simple structure, and the operation of extending and retracting the pen head is simple and convenient.

Description

Technical Field

[0001] This utility model belongs to the field of pen technology, and in particular relates to a push-pull writing pen. Background Technology

[0002] Currently, writing pens are an indispensable stationery item in people's daily life and work. The pen tip is exposed and is easily damaged by accidental impact. Therefore, the pen tip needs to be hidden when not in use. The methods to achieve this hiding are generally divided into: push-type writing pens and cap-type writing pens.

[0003] Press-type writing pens have a relatively complex structure, including a return spring, sliding components, and positioning components, resulting in higher production costs. Cap-type writing pens, on the other hand, require frequent cap removal and replacement during use, increasing the risk of cap loss. Therefore, the technical problem this invention aims to solve is how to design a writing pen that facilitates tip extension and retraction while maintaining a simple structure to reduce production costs. Utility Model Content

[0004] This invention provides a push-pull writing pen that allows for convenient extension and retraction of the pen tip, and its simple structure reduces production costs.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In one aspect, this utility model provides a push-pull writing pen, comprising: The first pen barrel has a first guide groove formed thereon; The first pen refill is disposed in the first pen barrel; Second penholder; The first connecting structure has one end connected to the second pen barrel and the other end passing through the first guide groove and connected to the first pen core; During the reciprocating motion of the first pen barrel and the second pen barrel along the first guide groove, the second pen barrel drives the pen tip of the first pen refill to extend into or out of the first pen barrel through the first connecting structure.

[0006] In some embodiments of this application, the first connection structure includes: A first connector is disposed in the first pen barrel and connected to the first pen refill; The first mating component is fixedly disposed on the second pen barrel. The first mating component is adapted to the first connecting component, and the first connecting component and / or the first mating component passes through the first guide groove.

[0007] In some embodiments of this application, the push-pull writing pen further includes: The core is disposed in the second pen barrel; a second guide groove is formed on the second pen barrel, and the axis of the second guide groove is parallel to that of the first guide groove; A second connection structure is configured to connect the core to the first pen barrel through the second guide groove; Specifically, during the reciprocating motion of the first pen barrel and the second pen barrel, when the second pen barrel causes the pen tip of the first pen refill to extend into the first pen barrel, the first pen barrel causes the free end of the refill to extend into the second pen barrel; when the second pen barrel causes the pen tip of the first pen refill to extend out of the first pen barrel, the first pen barrel causes the free end of the refill to extend out of the second pen barrel.

[0008] In some embodiments of this application, the second connection structure includes: The second connector is disposed in the second pen barrel and connected to the core; The second mating component is fixedly disposed on the first pen barrel. The second mating component is adapted to the second connecting component, and the second connecting component and / or the second mating component passes through the second guide groove.

[0009] In some embodiments of this application, both the first guide groove and the second guide groove include: The first groove body, the first connecting structure and the second connecting structure are slidably connected to the corresponding first groove body, the first groove body includes a receiving groove and a through groove, the receiving groove is located at both ends of the through groove and communicates with the through groove, the size of the through groove is smaller than the size of the receiving groove, and the receiving groove is adapted to the first connecting structure and the second connecting structure.

[0010] In some embodiments of this application, both the first guide groove and the second guide groove include: The second groove, along the width direction of the first groove, is spaced apart from the first groove and is configured to provide elastic deformation space for the through groove.

[0011] In some embodiments of this application, both the first guide groove and the second guide groove include: A third groove, along the length of the first groove, is disposed on one or both sides of the first groove and connected to the first groove, and is configured to provide elastic deformation space for the through groove.

[0012] In some embodiments of this application, the core includes a second pen refill or a decorative element.

[0013] In some embodiments of this application, a first opening groove is formed on the first pen barrel, and a second opening groove is formed on the second pen barrel, wherein the first opening groove and the second opening groove are staggered.

[0014] In some embodiments of this application, the opening of the first opening groove faces the second pen barrel, and the opening of the second opening groove faces the first pen barrel.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows: By setting a first pen barrel, a first pen refill, a second pen refill, and a first connecting structure, a first guide groove is formed on the first pen barrel, the first pen refill is disposed in the first pen barrel, and the first connecting structure passes through the first guide groove to connect the first pen refill to the second pen barrel. Under the guidance of the first guide groove, the first pen barrel or the second pen barrel can be pushed and pulled back and forth, so that the first pen barrel and the second pen barrel can reciprocate relative to each other. When the writing pen is not in use, the second pen barrel drives the pen tip of the first pen refill to extend into the first pen barrel through the first connecting structure to achieve pen tip retraction. When the writing pen is to be used, the second pen barrel drives the pen tip of the first pen refill to extend out of the first pen barrel through the first connecting structure for the user to write. The pen tip extension and retraction operation of the writing pen of this application is simple, and the writing pen has fewer accessories and a simple structure, which is conducive to reducing production costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of the push-pull writing pen provided by this utility model in its first state; Figure 2 A front view of an embodiment of the push-pull writing pen provided by this utility model in its first state; Figure 3 Right view of an embodiment of the push-pull writing pen provided by this utility model in a first state; Figure 4 An exploded view of an embodiment of the push-pull writing pen provided by this utility model; Figure 5 A schematic diagram of the structure of the first pen barrel of an embodiment of the push-pull writing pen provided by this utility model; Figure 6 An exploded view of a portion of the first pen barrel of an embodiment of the push-pull writing pen provided by this utility model; Figure 7 for Figure 6 Enlarged view of region A in the middle; Figure 8 A schematic diagram of the second state of an embodiment of the push-pull writing pen provided by this utility model; Figure 9 A cross-sectional view of an embodiment of the push-pull writing pen provided by this utility model in a second state; Figure 10 A schematic diagram of the first state of another embodiment of the push-pull writing pen provided by this utility model; Figure 11 A schematic diagram of the second state of another embodiment of the push-pull writing pen provided by this utility model; Figure 12 An exploded view of another embodiment of the push-pull writing pen provided by this utility model.

[0018] Figure 13 A schematic diagram of another embodiment of the push-pull writing pen provided by this utility model; Figure 14 An exploded view of another embodiment of the push-pull writing pen provided by this utility model.

[0019] Explanation of reference numerals in the attached figures: 1. First pen barrel; 11. First guide groove; 111. First groove body; 1111. Receiving groove; 1112. Through groove; 112. Second groove body; 113. Third groove body; 12. Pen barrel head; 121. Snap-fit ​​part; 1211. Snap-fit ​​protrusion; 1212. Extension rod; 13. Pen barrel body; 131. Positioning hole; 14. Pen barrel tail; 15. First opening groove; 2. First pen refill; 3. Second pen barrel; 31. Second guide groove; 32. Second opening groove; 4. First connecting structure; 41. First connecting member; 411. Recessed portion; 412. Protrusion; 42. First mating member; 5. Core; 51. Second refill; 52. Decorative parts; 6. Second connecting structure; 61. Second connecting piece; 62. Second mating piece. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of 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 some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 mechanical connection or an electrical 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 according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0025] In one respect, combination Figures 1 to 12 As shown, this embodiment of the present disclosure provides a push-pull writing pen, which includes a first pen barrel 1, a first pen core 2, a second pen barrel 3, and a first connecting structure 4.

[0026] A first guide groove 11 is formed on the side wall of the first pen barrel 1 facing the second pen barrel 3. The first guide groove 11 has an elongated structure. The axial direction of the first guide groove 11 is parallel to or coincides with the length direction of the first pen barrel 1. The first pen core 2 is disposed in the first pen barrel 1.

[0027] One end of the first connecting structure 4 is connected to the second pen barrel 3, and the other end of the first connecting structure 4 passes through the first guide groove 11 and is connected to the first pen core 2.

[0028] During the reciprocating motion of the first pen barrel 1 and the second pen barrel 3 along the first guide groove 11, the second pen barrel 3 drives the pen tip of the first pen core 2 to extend into or out of the first pen barrel 1 through the first connecting structure 4.

[0029] Specifically, by setting a first pen barrel 1, a first pen refill 2, a second pen refill 51, and a first connecting structure 4, a first guide groove 11 is formed on the first pen barrel 1, the first pen refill 2 is disposed in the first pen barrel 1, and the first connecting structure 4 passes through the first guide groove 11 to connect the first pen refill 2 to the second pen barrel 3. Under the guidance of the first guide groove 11, pushing and pulling the first pen barrel 1 or the second pen barrel 3 can cause the first pen barrel 1 and the second pen barrel 3 to reciprocate relative to each other. When the user is not using the writing pen, pushing and pulling the first pen barrel 1 or the second pen barrel 3 will cause the second pen barrel 3 to drive the pen tip of the first pen refill 2 to extend into the first pen barrel 1 through the first connecting structure 4 and retract the pen tip. When the user wants to use the writing pen, pushing and pulling the first pen barrel 1 or the second pen barrel 3 will cause the pen tip of the first pen refill 2 to extend out of the first pen barrel 1 through the first connecting structure 4 for the user to write. The writing pen of this application has a simple structure and the pen tip extension and retraction operation is convenient.

[0030] In some embodiments of this application, combined with Figure 4 , Figure 5 , Figure 6 and Figure 12 The first connecting structure 4 includes a first connecting member 41 and a first mating member 42.

[0031] The first connector 41 is disposed in the first pen barrel 1 and is detachably connected to the first pen refill 2.

[0032] The first mating part 42 is fixedly disposed on the second pen barrel 3. The first mating part 42 is adapted to the first connecting part 41, and the first connecting part 41 and / or the first mating part 42 pass through the first guide groove 11.

[0033] Specifically, the first connector 41 is connected to the first pen tip 2, and the first mating part 42 is connected to the second pen barrel 3. The first connector 41 and / or the first mating part 42 pass through the first guide groove 11 and the first mating part 42 and the first connector 41 cooperate with each other, so that the first pen barrel 1 and the second pen barrel 3 can also be connected together.

[0034] For example, the first connector 41 has a semi-cylindrical structure and is adapted to the inner wall surface of the first pen barrel 1. The surface of the first connector 41 facing the first pen refill 2 forms a protrusion 412, which is inserted into the first pen refill 2, thereby connecting the first connector 41 and the first pen refill 2 together.

[0035] The surface of the first connector 41 facing the second pen barrel 3 is recessed to form a recess 411. The first mating member 42 passes through the first guide groove 11 and extends into the recess 411, thereby connecting with the first connector 41.

[0036] In some embodiments, to prevent the first mating member 42 from separating from the first connecting member 41, the first mating member 42 is inserted into the recess 411 by means of an interference fit.

[0037] In other embodiments, a stop strip is formed on one of the outer wall surface of the first mating member 42 and the inner wall surface of the recess 411, and a stop groove is formed on the other. When the first mating member 42 is connected to the first connecting member 41, the stop strip is inserted into the stop groove, making the connection between the two tighter, which is beneficial to improving the connection strength of the push-pull writing pen.

[0038] Of course, glue can also be applied to the surfaces where the first mating part 42 and the recessed part 411 come into contact to make the two bond more tightly.

[0039] In some embodiments of this application, the push-pull writing pen also includes a core 5 and a second connecting structure 6.

[0040] The core 5 is disposed in the second pen barrel 3; a second guide groove 31 is formed on the second pen barrel 3, and the axes of the second guide groove 31 and the first guide groove 11 are parallel.

[0041] The second connecting structure 6 is configured to connect the core 5 to the first pen barrel 1 through the second guide groove 31; During the reciprocating motion of the first pen barrel 1 and the second pen barrel 3, when the second pen barrel 3 causes the pen tip of the first pen core 2 to extend into the first pen barrel 1, the first pen barrel 1 causes the free end of the core 5 to extend into the second pen barrel 3; when the second pen barrel 3 causes the pen tip of the first pen core 2 to extend out of the first pen barrel 1, the first pen barrel 1 causes the free end of the core 5 to extend out of the second pen barrel 3.

[0042] Specifically, by setting a second guide groove 31 on the second pen barrel 3, the second connecting structure 6 passes through the second guide groove 31 to connect the core 5 to the first pen barrel 1. In this way, the second guide groove 31 and the first guide groove 11 together provide guidance for the corresponding movement of the first pen barrel 1 and the second pen barrel 3, avoiding relative rotation of the first pen barrel 1 and the second pen barrel 3. At the same time, the second connecting structure 6 connects the core 5 to the first pen barrel 1, and also connects the first pen barrel 1 and the second pen barrel 3 together, improving the structural strength and stability of the writing pen.

[0043] In some embodiments of this application, the second connection structure 6 includes a second connector 61 and a second mating member 62.

[0044] The second connector 61 is disposed in the second pen barrel 3 and connected to the core 5.

[0045] The second mating part 62 is fixedly disposed on the first pen barrel 1. The second mating part 62 is adapted to the second connecting part 61, and the second connecting part 61 and / or the second mating part 62 pass through the second guide groove 31.

[0046] Specifically, the structure and connection form of the second connector 61 and the second mating member 62 are similar to those of the first connector 41 and the first mating member 42, and will not be described in detail here.

[0047] In some embodiments of this application, combined with Figure 7 Both the first guide groove 11 and the second guide groove 31 include a first groove body 111.

[0048] The first connecting structure 4 and the second connecting structure 6 are both slidably connected to the corresponding first groove 111. The first groove 111 includes a receiving groove 1111 and a through groove 1112. The receiving groove 1111 is located at both ends of the through groove 1112 and communicates with the through groove 1112. The size of the through groove 1112 is smaller than the size of the receiving groove 1111, and the receiving groove 1111 is adapted to the first connecting structure 4 and the second connecting structure 6.

[0049] Specifically, the first groove 111 includes a receiving groove 1111 and a through groove 1112. The receiving groove 1111 is located at both ends of the through groove 1112 and communicates with the through groove 1112. The size of the through groove 1112 is smaller than the size of the receiving groove 1111. The receiving groove 1111 is adapted to the first connecting structure 4 and the second connecting structure 6. In this way, the first groove 111 forms a shape that is thin in the middle and thick at both ends.

[0050] When the first connecting structure 4 and the second connecting structure 6 slide into the receiving groove 1111, if the pen tip extends out of the pen barrel, the pen tip will not easily retract into the pen barrel when the user is writing; if the pen tip extends into the pen barrel, it will not easily extend without the action of external force.

[0051] That is, the through groove 1112 restricts the movement of the first connecting structure 4 and the second connecting structure 6 to a certain extent.

[0052] Taking the first pen refill 2 inside the first pen barrel 1 as an example, when the first connecting structure 4 passes through the receiving groove 1111 on the side of the pen barrel head 12 near the first pen barrel 1, the pen tip of the first pen refill 2 extends out of the first pen barrel 1; when the first connecting structure 4 passes through the receiving groove 1111 on the side of the pen barrel head 12 away from the first pen barrel 1, the pen tip of the first pen refill 2 extends into the first pen barrel 1.

[0053] In some embodiments of this application, both the first guide groove 11 and the second guide groove 31 include a second groove body 112.

[0054] Along the width direction of the first groove 111, the second groove 112 is spaced apart from the first groove 111, and the second groove 112 is configured to provide elastic deformation space for the through groove 1112.

[0055] Specifically, by setting a second groove 112, the second groove 112 is spaced apart from the first groove 111 along the width direction of the first groove 111. In this way, both sides of the side wall of the first groove 111 are hollowed out, which facilitates the elastic deformation of the first groove 111, thereby allowing the first connecting structure 4 and the second connecting structure 6 to pass smoothly through the first groove 111 without causing damage to the first groove 111.

[0056] In some embodiments of this application, both the first guide groove 11 and the second guide groove 31 include a third groove 113.

[0057] The third groove 113 is along the length of the first groove 111. The third groove 113 is disposed on one or both sides of the first groove 111 and is connected to the first groove 111. It is configured to provide elastic deformation space for the through groove 1112.

[0058] Specifically, a third groove 113 is provided along the length of the first groove 111, and the third groove 113 is connected to the first groove 111. The third groove 113 also provides space for the elastic deformation of the through channel.

[0059] In some embodiments of this application, the core 5 includes a second pen tip 51 or a decorative element 52.

[0060] Specifically, the decorative part 52 mainly serves a decorative function. For example, the end of the decorative part 52 extending out of the second pen barrel 3 can be in the shape of animals, plants, or figures.

[0061] In some embodiments of this application, the first pen barrel 1 and / or the second pen barrel 3 are detachable structures.

[0062] Specifically, by setting the first pen barrel 1 and / or the second pen barrel 3 as a detachable structure, it is convenient for the production and assembly of writing pens and for users to replace the pen refills. When a component malfunctions, only the damaged part needs to be replaced, without discarding the entire writing pen, thereby increasing its service life.

[0063] In some embodiments of this application, combined with Figure 1 and Figure 4 The first pen barrel 1 and / or the second pen barrel 3 include a pen barrel body 13 and a pen barrel head 12, the pen barrel head 12 being detachably mounted on one end of the pen barrel body 13.

[0064] Specifically, by detachably mounting the pen head 12 to one end of the pen body 13, it is easy to separate the pen head 12 and the pen body 13 to replace the first pen refill 2 and / or the core 5. In some embodiments of this application, the first pen barrel 1 and / or the second pen barrel 3 further include a pen barrel tail 14.

[0065] The main body 13 and the tail 14 of the pen barrel are an integral structure; the pen barrel head 12 of the first pen barrel 1 has a first inlet and outlet for the first pen core 2 to extend or retract, and the pen barrel head 12 of the second pen barrel 3 has a second inlet and outlet for the end of the core 5 to extend or retract.

[0066] Combination Figure 3 and Figure 8 When the tip of the first pen refill 2 extends out of the first inlet and the end of the core 5 extends out of the second inlet and the pen tip formed by the pen head 12 of the first pen barrel 1 and the pen tail 14 of the second pen barrel 3 is tapered, which makes it easy for the user to hold the pen comfortably.

[0067] Combination Figure 9 When the core 5 is the second pen refill 51, and the pen tip of the second pen refill 51 extends out of the second inlet / outlet, the pen tip formed by the pen head 12 of the second pen barrel 3 and the pen tail 14 of the first pen barrel 1 has a tapered structure, which facilitates a comfortable grip for the user. At this time, both ends of the pen can be used for writing.

[0068] Combination Figure 10 When the core 5 is a decorative piece 52, and the end of the decorative piece 52 extends out of the second inlet / outlet, the writing pen tip formed by the pen head 12 of the second pen barrel 3 and the pen tail 14 of the first pen barrel 1 has a flat structure, which improves the aesthetics. At this time, the writing pen can only be used for single-head writing.

[0069] Combination Figure 1 , Figure 2 and Figure 11When the tip of the first pen refill 2 is inserted into the first inlet and the core 5 is inserted into the second inlet and the pen head 12 of the first pen barrel 1 is offset from the pen tail 14 of the second pen barrel 3.

[0070] Of course, the configuration of the first penholder 1 and the second penholder 3 includes, but is not limited to, the types described above.

[0071] In some embodiments of this application, the first connector 41 and the first pen refill 2 are detachably connected.

[0072] Specifically, the first connector 41 and the first pen refill 2 are connected by an insertion. When the first pen refill 2 is used up, the first pen barrel 1 can be opened to replace the first pen refill 2. When the second pen refill 51 is used up, the second pen barrel 3 can be opened to replace the second pen refill 51, which helps to save users' expenses.

[0073] In some embodiments of this application, the main body 13 of the first pen barrel 1 and the main body 13 of the second pen barrel 3 are both semi-cylindrical structures, so that when the first pen barrel 1 and the second pen barrel 3 are attached together, a cylindrical writing pen is formed, which makes it convenient for the user to hold the pen comfortably.

[0074] In some embodiments of this application, combined with Figure 2 As shown, a first opening groove 15 is formed on the first pen barrel 1, and a second opening groove 32 is formed on the second pen barrel 3. The first opening groove 15 and the second opening groove 32 are staggered.

[0075] Specifically, by forming a first opening groove 15 on the first pen barrel 1 and a second opening groove 32 on the second pen barrel 3, with the first opening groove 15 and the second opening groove 32 being staggered, the user can hold the first opening groove 15 and the second opening groove 32 and slowly disassemble the first pen barrel 1 and the second pen barrel 3, so that the two ends of the writing pen are evenly stressed, avoiding damage to the writing pen during disassembly.

[0076] In some embodiments of this application, the opening of the first opening groove 15 faces the second pen barrel 3, and the opening of the second opening groove 32 faces the first pen barrel 1.

[0077] Specifically, the opening of the first opening groove 15 faces the second pen barrel 3, and the opening of the second opening groove 32 faces the first pen barrel 1. When the user needs to separate the first pen barrel 1 and the second pen barrel 3, the thumb and index finger of one hand can be inserted into the first opening groove 15, and the thumb and index finger of the other hand can be inserted into the second opening groove 32. By applying force to the first pen barrel 1 and the second pen barrel 3 in opposite directions, the two can be separated.

[0078] In some other embodiments of this application, the pen head 12 is formed with a snap-fit ​​portion 121, and the pen body 13 is formed with a snap-fit ​​mating portion. The pen head 12 and the pen body 13 are snapped together by the snap-fit ​​portion 121 and the snap-fit ​​mating portion.

[0079] Specifically, in combination Figure 13 and Figure 14 As shown, a positioning hole 131 is formed on the main body 13 of the pen barrel, and the positioning hole 131 is a snap-fit ​​part; the snap-fit ​​part 121 includes an extension rod 1212 and a snap protrusion 1211. The snap protrusion 1211 is disposed on the extension rod 1212. One end of the extension rod 1212 is connected to the end of the pen barrel head 12, and the other end of the extension rod 1212 extends toward the interior of the main body 13 of the pen barrel. In the assembled state, the snap protrusion 1211 is snapped into the positioning hole 131 to connect the pen barrel head 12 and the main body 13 of the pen barrel together.

[0080] Each pen head 12 has two sets of locking parts 121. When the first pen refill 2 needs to be replaced, the user only needs to pinch the two locking protrusions 1211 to make the extension rod 1212 elastically deform. The two locking protrusions 1211 are pressed into the pen body 13. The pen head 12 is then dragged away from the pen body 13, which separates the pen head 12 from the pen body 13. The first pen refill 2 can then be replaced. After replacement, the two locking parts 121 are inserted into the pen body 13 and aligned with the positioning hole 131 so that the locking protrusions 1211 are engaged in the positioning hole 131.

[0081] To allow the protrusion 1211 to move more smoothly into and out of the positioning hole 131, both ends of the protrusion 1211 are chamfered.

[0082] The procedure for replacing core 5 is similar to that described above, and will not be repeated here.

[0083] In another embodiment of this application, the pen head 12 and the pen body 13 are connected by threads.

[0084] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0085] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. A push-pull writing pen, characterized in that, include: The first pen barrel has a first guide groove formed thereon; The first pen refill is disposed in the first pen barrel; Second penholder; The first connecting structure has one end connected to the second pen barrel and the other end passing through the first guide groove and connected to the first pen core; During the reciprocating motion of the first pen barrel and the second pen barrel along the first guide groove, the second pen barrel drives the pen tip of the first pen refill to extend into or out of the first pen barrel through the first connecting structure.

2. The push-pull writing pen according to claim 1, characterized in that, The first connection structure includes: A first connector is disposed in the first pen barrel and connected to the first pen refill; The first mating component is fixedly disposed on the second pen barrel. The first mating component is adapted to the first connecting component, and the first connecting component and / or the first mating component passes through the first guide groove.

3. The push-pull writing pen according to claim 1, characterized in that, The push-pull writing pen also includes: The core is disposed in the second pen barrel; a second guide groove is formed on the second pen barrel, and the axis of the second guide groove is parallel to that of the first guide groove; A second connection structure is configured to connect the core to the first pen barrel through the second guide groove; Specifically, during the reciprocating motion of the first pen barrel and the second pen barrel, when the second pen barrel causes the pen tip of the first pen refill to extend into the first pen barrel, the first pen barrel causes the free end of the refill to extend into the second pen barrel; when the second pen barrel causes the pen tip of the first pen refill to extend out of the first pen barrel, the first pen barrel causes the free end of the refill to extend out of the second pen barrel.

4. The push-pull writing pen according to claim 3, characterized in that, The second connection structure includes: The second connector is disposed in the second pen barrel and connected to the core; The second mating component is fixedly disposed on the first pen barrel. The second mating component is adapted to the second connecting component, and the second connecting component and / or the second mating component passes through the second guide groove.

5. The push-pull writing pen according to claim 3, characterized in that, Both the first guide groove and the second guide groove include: The first groove body, the first connecting structure and the second connecting structure are slidably connected to the corresponding first groove body, the first groove body includes a receiving groove and a through groove, the receiving groove is located at both ends of the through groove and communicates with the through groove, the size of the through groove is smaller than the size of the receiving groove, and the receiving groove is adapted to the first connecting structure and the second connecting structure.

6. The push-pull writing pen according to claim 5, characterized in that, Both the first guide groove and the second guide groove include: The second groove, along the width direction of the first groove, is spaced apart from the first groove and is configured to provide elastic deformation space for the through groove.

7. The push-pull writing pen according to claim 5, characterized in that, Both the first guide groove and the second guide groove include: A third groove, along the length of the first groove, is disposed on one or both sides of the first groove and connected to the first groove, and is configured to provide elastic deformation space for the through groove.

8. The push-pull writing pen according to claim 3, characterized in that, The core includes a second pen refill or a decorative element.

9. The push-pull writing pen according to claim 1, characterized in that, The first pen barrel has a first opening groove, and the second pen barrel has a second opening groove, which are staggered.

10. The push-pull writing pen according to claim 9, characterized in that, The opening of the first slot faces the second pen barrel, and the opening of the second slot faces the first pen barrel.

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