Multi-refill pen

Abstract

The utility model discloses a multi-refill pen. The multi-refill pen comprises a pen holder, the pen holder comprises a holder body and a plurality of sliding buttons, and the holder body comprises a first holder, a second holder and a connecting sleeve; a plurality of sliding grooves are formed in the second rod, and the sliding buttons are arranged in the corresponding sliding grooves in a sliding mode; the connecting sleeve is rotatably arranged on the second rod, and the connecting sleeve is in threaded connection with the first rod; the refills are located in the pen holder and connected to the corresponding sliding buttons. The capacity of the refills used by the multi-refill pen is improved, so that the replacement frequency of the refills is reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to a multi-core pen. Background Art

[0002] Pens with multiple cores (such as stationery writing pens or eyeliners or eyeshadows) are widely used because different cores can be switched in a single pen as needed, such as the multi-core pen disclosed in Chinese Patent Publication No. CN117465159A or the multi-core pen disclosed in Chinese Patent Publication No. CN113243652A.

[0003] However, for conventional multi-core pens, as the number of refills increases, the refills need to be rotated when inserted into the pen barrel for assembly, so there needs to be enough clearance between the refills and the inner wall of the pen barrel to ensure that the refills will not be twisted and deformed due to contact with the inner wall of the pen barrel during assembly. For this reason, the outer circumference of the pen barrel increases accordingly. In order to avoid the outer circumference of the pen barrel being too large and affecting the user's hand-holding feel, the usual way is to reduce the capacity of the refill, that is, to use a smaller refill placed in the pen barrel. In this way, although the outer circumference of the pen barrel can be controlled, the refill capacity is effectively reduced, requiring the user to frequently replace the refill, which also leads to a poor user experience.

[0004] In view of this, how to design a technology to increase the capacity of the pen core to reduce the frequency of pen core replacement and thus improve the user experience is the technical problem to be solved by the present utility model. Utility Model Content

[0005] The utility model provides a multi-core pen, which can improve the capacity of the cores used in the multi-core pen, reduce the frequency of core replacement, and thus improve the user experience.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a multi-core pen, comprising:

[0008] A pen holder, the pen holder comprising a rod body and a plurality of sliding buttons, the rod body comprising a first rod, a second rod and a connecting sleeve; the second rod is provided with a plurality of sliding grooves, the sliding buttons are slidably arranged in the corresponding sliding grooves; the connecting sleeve is rotatably arranged on the second rod, and the connecting sleeve is threadedly connected to the first rod;

[0009] A plurality of pen refills, each of which is located in the pen barrel and connected to a corresponding sliding button;

[0010] A spring is located in the rod body and is configured to apply elastic force to the pen core or the sliding button.

[0011] Compared with the prior art, the technical solution of the utility model has the following technical effects: by designing the rod body as a split body, the first rod and the second rod are connected by a connecting sleeve, the connecting sleeve and the second rod can rotate circumferentially but cannot move axially, and the connecting sleeve and the first rod are threadedly connected. In this way, during assembly, the pen core connected to each sliding button of the second rod is inserted into the first rod, and then, by rotating the connecting sleeve, it can be threadedly connected to the first rod and ensure that the second rod does not rotate relative to the first rod, so that the pen core can be closer to the inner wall of the first rod. In this way, the capacity of the pen core can be effectively increased without increasing the outer circumference of the first rod, thereby reducing the user's replacement frequency and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of an embodiment of the multi-core pen of the utility model;

[0013] Figure 2 for Figure 1 A cross-sectional view of a multi-core pen;

[0014] Figure 3 for Figure 1 Exploded view of the medium multi-core pen;

[0015] Figure 4 for Figure 1 One of the structural diagrams of the first pole in the figure;

[0016] Figure 5 for Figure 1 The second structural diagram of the first rod;

[0017] Figure 6 for Figure 1 A cross-sectional view of the first rod;

[0018] Figure 7 for Figure 1 A top view of the first pole in the middle;

[0019] Figure 8 for Figure 1 The structural diagram of the second rod;

[0020] Fig. 9 for Figure 1 A schematic diagram of the structure of the middle connecting sleeve;

[0021] Fig.10 for Figure 1 Schematic diagram of the structure of the middle pen head

[0022] Fig.11 for Figure 1 A cross-sectional view of the middle pen tip;

[0023] Fig.12 for Figure 1Schematic diagram of the structure of the slide button.

[0024] Reference numerals:

[0025] 100, pen holder; 200, refill; 210, nib; 300, spring;

[0026] 1. Rod body; 11. First rod; 12. Second rod; 13. Connecting sleeve; 14. Support shaft; 15. Anti-slip head; 16. Through hole;

[0027] 101. slide groove; 102. sliding support surface; 103. guide rib;

[0028] 111, gripping portion; 112, limiting groove; 113, guiding portion; 114, slot;

[0029] 121, plug-in portion; 122, limiting rib; 123, annular groove;

[0030] 131. Positioning ribs;

[0031] 2. Pen tip; 21. Inlet and outlet hole; 22. Rotation drive unit; 23. Sliding guide surface; 221. Guide slope; 222. Tip structure; 24. Axis hole;

[0032] 3. Slide button; 31. Guide groove. DETAILED DESCRIPTION

[0033] like Figure 1-Figure 12 As shown, the utility model provides a multi-core pen, which generally includes a pen body 100 and a plurality of pen cores 200. The pen body 100 is provided with a sliding button 3 matching the pen core 200. The tail of the pen core 200 is connected to the corresponding sliding button 3. By pressing the sliding button 3, the corresponding pen core 200 can be extended to the outside of the pen body 100 for use. When the pen core 200 needs to be switched, the pressed sliding button 3 is unlocked by pressing other sliding buttons 3. Under the action of the spring 300, the unlocked sliding button 3 drives the pen core 200 to retract and reset, and the pressed sliding button 3 drives the corresponding pen core 200 to extend to the outside of the pen body 100. For the mutual locking and unlocking methods between the sliding buttons 3, reference can be made to the multi-core pen in the conventional technology, and no limitation or redundant description is made here.

[0034] In view of the different problems existing in the existing multi-core pens, the following structural designs and improvements are made in a targeted manner.

[0035] Embodiment 1: For the multi-core pen in the prior art, since the pen core 200 needs to move toward the inlet and outlet direction of the center position and bend during the extension process, the pen core 200 is easily deformed after long-term use, resulting in reduced reliability and affecting the user experience. Therefore, the following improvements are made to the multi-core pen.

[0036] An embodiment of the present application provides a multi-core pen, comprising: a pen body 100 and a plurality of pen cores 200 .

[0037] The pen holder 100 comprises a rod body 1, a pen tip 2 and a plurality of sliding buttons 3. The pen tip 2 is rotatably arranged at a first end of the pen holder 100. An inlet and outlet hole 21 is arranged on the pen tip 2. The inlet and outlet hole 21 is eccentrically arranged on one side of the axis of the pen tip 2. A rotation driving part 22 is also arranged on the inner wall of the pen tip 2. A plurality of slide grooves 101 are arranged on the second end of the rod body 1. The sliding buttons 3 are slidably arranged in the corresponding slide grooves 101.

[0038] The pen core 200 is inserted into the rod body 1 and connected to the corresponding sliding button 3;

[0039] Among them, the rotation driving part 22 is configured to be abutted by the pen core 200 to drive the pen head 2 to rotate on the pen shaft 100 and guide the pen tip 210 of the pen core 200 to be inserted into the entry and exit hole 21, and the entry and exit hole 21 is configured to allow the pen tip 210 of the pen core 200 to extend to the outside of the pen head 2.

[0040] Specifically, a rotatable pen head 2 is provided on the body 1 of the pen holder 100, and an inlet and outlet hole 21 provided on the pen head 2 is eccentrically arranged. The eccentric position is based on the relative arrangement of the inlet and outlet hole 21 on the pen head 2 and the pen core 200 to be extended during the rotation of the pen head 2.

[0041] For example: taking the rotation axis of the pen tip 2 as a reference, multiple pen refills 200 will be arranged around the rotation axis of the pen tip 2, and the projection of the tip 210 of the pen refill 200 along the length direction of the pen refill 200 toward the pen tip 2 will be located in the circular area formed by the inlet and outlet hole 21 of the pen tip 2 during the rotation process.

[0042] When the sliding button 3 slides toward the pen head 2, the pen core 200 will abut against the rotating drive unit 22 to drive the pen head 2 to rotate, so that the entry and exit hole 21 rotates to be arranged relative to the pen core 200 so that the pen tip 210 of the pen core 200 can extend to the outside of the entry and exit hole 21.

[0043] Thus, during use, after the user presses the sliding button 3, the pen tip 210 of the pen core 200 will move toward the pen head 2. Since the pen head 2 is a tapered structure, the pen tip 210 of the pen core 200 will slide along the inner wall of the pen head 2 and finally abut against the rotation drive unit 22.

[0044] The pen tip 210 of the pen core 200 will apply pressure to the rotation drive unit 22 to drive the pen head 2 to rotate on the pen shaft 100 through the rotation drive unit 22, and as the pen head 2 rotates, the pen core 200 continues to extend to the outside of the pen shaft 100, and the pen tip 210 will drive the rotation drive unit 22 to rotate while the pen tip 210 will also be inserted into the inlet and outlet hole 21 along the rotation drive unit 22.

[0045] Finally, after the pen tip 210 of the pen core 200 extends out of the inlet and outlet hole 21, the center line of the air inlet hole is parallel to the center line of the pen core 200, so that the pen core 200 is not bent when in use.

[0046] In order to enable the refill 200 to automatically reset after pressing the other sliding button 3 to unlock the pressed sliding button 3, a spring 300 is also provided in the pen body 100, and the spring 300 is used to apply elastic force to the refill 200 or the sliding button 3 to achieve automatic reset.

[0047] The rotation driving part 22 needs to contact with the pen tip 210 to drive the pen head 2 to rotate. On the other hand, the rotation driving part 22 further guides the pen tip 210 to be inserted into the inlet and outlet hole 21 when cooperating with the pen tip 210 .

[0048] In one embodiment, the rotation driving part 22 protrudes from the inner wall of the pen head 2, and a guide slope 221 is provided on the side of the rotation driving part 22, and the guide slope 221 extends obliquely toward the direction of the inlet and outlet hole 21;

[0049] The guiding inclined surface 221 is configured to abut against the pen core 200 to drive the pen head 2 to rotate on the pen body 100 .

[0050] Specifically, the rotary drive part 22 is in a convex state on the inner wall of the pen head 2, and the guide slope 221 formed on the side of the rotary drive part 22 can be abutted against the pen tip 210 of the pen core 200. The guide slope 221 is squeezed by the pen tip 210 of the pen core 200 sliding outward, so that the pen head 2 is pressed by the rotary drive part 22 to make the pen head 2 rotate on the pen holder 100. At the same time, the guide slope 221 extends toward the direction of the inlet and outlet hole 21, and finally guides the pen tip 210 to be accurately inserted into the inlet and outlet hole 21.

[0051] Preferably, the guide inclined surfaces 221 are respectively provided on both sides of the rotation driving portion 22 .

[0052] Specifically, the rotation driving part 22 is provided with guiding inclined surfaces 221 on both sides thereof, and the guiding inclined surfaces 221 extend to the inlet and outlet holes 21 respectively, so that the refills 200 at different positions can cooperate with the guiding inclined surfaces 221 on the corresponding sides to drive the pen head 2 to rotate.

[0053] In another embodiment, the end of the rotation driving portion 22 facing the pen holder 100 is a pointed structure 222 , and the guiding inclined surface 221 extends from the pointed structure 222 toward the inlet and outlet hole 21 in a curved and inclined manner.

[0054] Specifically, a pointed structure 222 is formed on the rotary driving part 22 , and the pointed structure 222 can ensure that the pen tip 210 is distributed to the guide inclined surface 221 on one side after contacting the pointed structure 222 to ensure reliability in use.

[0055] In another embodiment of the present application, in order to ensure that the pen tip 2 can rotate smoothly on the pen holder 100, there are multiple forms of rotational cooperation between the pen tip 2 and the pen holder 100.

[0056] In one embodiment, a circular sliding support surface 102 is formed on the outer periphery of the first end of the pen body 100 , and a circular sliding guide surface 23 is provided on the inner wall of the pen head 2 . The sliding guide surface 23 can rotatably contact and cooperate with the sliding support surface 102 .

[0057] Specifically, the sliding support surface 102 cooperates with the sliding guide surface 23 to ensure that the pen tip 2 can rotate on the pen holder 100 . For example, the sliding guide surface 23 can be sleeved on the outside of the sliding support surface 102 to enable the pen tip 2 to rotate on the pen holder 100 .

[0058] In a second embodiment, a support shaft 14 is disposed at the first end of the pen body 100 , the axis of the support shaft 14 is colinear with the rotation axis of the pen tip 2 , and the pen tip 2 is rotatably disposed on the support shaft 14 .

[0059] Specifically, a support shaft 14 extending outward is disposed at the first end of the pen body 100 , and the pen head 2 is directly mounted on the support shaft 14 so as to support the pen head 2 to rotate relative to the pen body 100 via the support shaft 14 .

[0060] Furthermore, the pen tip 2 is provided with an axial hole 24, the inlet and outlet hole 21 is arranged on one side of the axial hole, and the support shaft 14 is inserted into the axial hole; the free end of the support shaft 14 is also provided with an anti-dropping head 15, and the anti-dropping head 15 abuts against the outside of the pen tip 2 and is configured to prevent the pen tip 2 from falling off the support shaft 14. Specifically, the pen tip 2 is provided with an axial hole to cooperate with the support shaft 14 to achieve a rotatable installation, and at the same time, the anti-dropping head 15 can prevent the pen tip 2 assembled on the support shaft 14 from falling off, so as to improve the reliability of use.

[0061] Furthermore, the support shaft 14 is provided on the end surface of the first end of the rod body 1, and a plurality of through holes 16 are provided on the end surface of the first end of the rod body 1, and the through holes 16 are configured to allow the pen core 200 at the corresponding position to pass through, and the through holes 16 are arranged opposite to the corresponding sliding button 3.

[0062] Specifically, a support shaft 14 extending outward is provided on the end surface of the first end portion of the rod body 1. At the same time, in order to meet the requirement that the pen tip 210 extends out of the rod body 1, a through hole 16 matching the pen core 200 is also provided on the end surface of the first end portion of the rod body 1. The pen tip 210 of the pen core 200 extends into the pen head 2 via the through hole 16.

[0063] Method three, the pen tip 2 and the pen holder 100 can simultaneously adopt the structures of methods one and two, so that the pen tip 2 can rotate more stably and smoothly on the pen holder 100.

[0064] A rotatable pen head 2 is provided at the end of the rod body 1, an inlet and outlet hole 21 is eccentrically provided on the pen head 2, and a rotation driving part 22 is also provided on the inner wall of the pen head 2. When the sliding button 3 slides toward the pen head 2, the pen core 200 will abut against the rotation driving part 22 to drive the pen head 2 to rotate, so that the inlet and outlet hole 21 is rotated to be arranged relative to the pen core 200 so that the pen tip 210 of the pen core 200 extends out of the inlet and outlet hole 21. Since the pen head 2 can rotate freely, the inlet and outlet hole 21 can be aligned with the corresponding sliding button 3, so that the pen core 200 can basically remain in an unchanged state. In this way, during use, since the pen core 200 is basically not deformed, the generation of shaking can be reduced, and the retraction of the pen core 200 can be smoother, so as to improve the reliability of use and the user experience.

[0065] In the second embodiment, for a multi-core pen, since multiple refills 200 are arranged inside, the overall outer circumference of the pen body 100 will be increased. In order to reasonably design the outer circumference of the pen body 100, the outer circumference of the refill 200 will be reduced, resulting in a reduced capacity of the refill 200. In order to increase the capacity of the refill 200 in the multi-core pen, the following structural improvements are made to the multi-core pen.

[0066] An embodiment of the present application provides a multi-core pen, comprising: a pen body 100 and a plurality of pen cores 200 .

[0067] The pen holder 100 includes a rod body 1 and a plurality of sliding buttons 3. The rod body 1 includes a first rod 11, a second rod 12 and a connecting sleeve 13. The second rod 12 is provided with a plurality of sliding grooves 101. The sliding buttons 3 are slidably arranged in the corresponding sliding grooves 101. The connecting sleeve 13 is rotatably arranged on the second rod 12. The connecting sleeve 13 is threadedly connected to the first rod 11.

[0068] The pen core 200 is located in the pen body 100 and connected to the corresponding sliding button 3 .

[0069] Specifically, for the pen holder 100 , the rod body 1 adopts a split design, and during assembly, the first rod 11 and the second rod 12 are connected and fixed by a connecting sleeve 13 , and the first rod 11 and the second rod 12 are relatively immovable.

[0070] Specifically, the sliding button 3 is assembled onto the second rod 12 , and the refill 200 is connected to the corresponding sliding button 3 , and then the first and second rods 12 can be connected.

[0071] The connecting sleeve 13 is pre-installed on the second rod 12, and the connecting sleeve 13 can rotate on the second rod 12 and will not fall off from the second rod 12 along the length direction. In this way, when the first rod 11 and the second rod 12 are connected, the second rod 12 is docked with the first rod 11 and the pen core 200 is inserted into the first rod 11, and the connecting sleeve 13 rotates relative to the second rod 12 and is threadedly connected and fastened with the first rod 11. During the rotation of the connecting sleeve 13, since the first rod 11 and the second rod 12 do not rotate relative to each other, the pen core 200 can be more closely attached to the inner wall of the first rod 11, and there is no need to reserve an extra large gap due to the rotation of the pen core 200 in the first rod 11. In this way, the outer circumference size of the pen core 200 can be effectively increased to increase the capacity of the pen core 200 without increasing the outer circumference size of the first rod 11.

[0072] In order to enable the refill 200 to automatically reset after pressing the other sliding button 3 to unlock the pressed sliding button 3, a spring 300 is also provided in the pen body 100, and the spring 300 is used to apply elastic force to the refill 200 or the sliding button 3 to achieve automatic reset.

[0073] In one embodiment, the cross section of the inner wall of the first rod 11 is a non-circular structure.

[0074] Specifically, the cross section of the inner wall of the first rod 11 is a non-circular structure, which can further reduce the inner diameter of the first rod 11 and further reduce the overall size of the first rod 11 .

[0075] For example, the cross section of the inner wall of the first rod 11 is a polygonal structure. Figure 7 As shown, the cross section of the inner wall of the first rod 11 is a triangular structure, and correspondingly, three pen cores 200 are arranged, and the three pen cores 200 will fully utilize the inner space of the first rod 11 for installation.

[0076] Furthermore, the outer peripheral wall of the first rod 11 forms a gripping portion 111 , and the cross section of the outer wall of the gripping portion 111 is a polygonal structure.

[0077] Specifically, in order to minimize the outer circumference of the pen holder 100, the gripping portion 111 formed by the outer circumferential wall of the first rod 11 also adopts a polygonal structure to match the cross section of the inner wall of the first rod 11. In this way, the outer circumference of the gripping portion 111 held by the user can be effectively reduced to improve the user's convenience.

[0078] Wherein, the connection portion between two adjacent sides of the polygonal structure is smoothly transitioned; and / or, the side of the polygonal structure is a straight line or an arc.

[0079] In another embodiment, the slide groove 101 is provided at one end of the second rod 12, and the plug-in portion 121 is provided at the other end of the second rod 12, and the outer contour of the outer wall of the plug-in portion 121 matches the inner contour of the inner wall of the first rod 11; the plug-in portion 121 is inserted into the first rod 11.

[0080] During assembly, the plug-in portion 121 of the second rod 12 is inserted into the first rod 11 , and then further threadedly fastened to the first rod 11 via the connecting sleeve 13 .

[0081] Furthermore, a limiting rib 122 is provided on the outer wall of the plug-in portion 121 , and a limiting groove 112 is provided on the inner wall of the first rod 11 . The limiting groove 112 and the limiting groove extend along the length direction of the pen barrel 100 , and the limiting rib 122 is inserted into the limiting groove 112 .

[0082] Specifically, in order to improve the assembly accuracy, during the insertion process of the first rod 11 and the second rod 12, the limiting rib 122 will be inserted into the limiting groove 112, so as to achieve a fool-proof design and improve the assembly accuracy.

[0083] In another embodiment, in order to ensure that the connecting sleeve 13 can rotate freely on the second rod 12 and will not fall off the second rod 12, the inner wall of the connecting sleeve 13 is provided with an internal thread and a positioning rib 131, the outer wall of the second rod 12 is provided with an annular groove 123, the connecting sleeve 13 is sleeved on the outside of the second rod 12, the positioning rib 131 is clamped in the annular groove 123, and the positioning rib 131 is slidably arranged in the annular groove 123 around the axial direction of the connecting sleeve 13;

[0084] The other end of the first rod 11 is provided with an external thread, and the connecting sleeve 13 is connected to the first rod 11 through the cooperation of the internal thread and the external thread.

[0085] Specifically, the connecting sleeve 13 is pre-installed on the second rod 12, the connecting sleeve 13 is sleeved on the plug-in portion 121 of the second rod 12, and is clamped in the annular groove 123 using the positioning rib 131 to prevent it from falling off. When the connecting sleeve 13 rotates, the positioning rib 131 is clamped in the annular groove 123 and rotates.

[0086] By designing the rod body 1 as a split body, the first rod 11 and the second rod 12 will be connected through the connecting sleeve 13, and the connecting sleeve 13 and the second rod 12 can rotate circumferentially but cannot move axially, and the connecting sleeve 13 and the first rod 11 are threadedly connected. In this way, during assembly, the pen core 200 connected to each sliding button 3 of the second rod 12 is inserted into the first rod 11, and then, by rotating the connecting sleeve 13, it can be threadedly connected to the first rod 11 and ensure that the second rod 12 does not rotate relative to the first rod 11, so that the pen core 200 can be closer to the inner wall of the first rod 11. In this way, the capacity of the pen core 200 can be effectively increased without increasing the outer circumference of the first rod 11, thereby reducing the user's replacement frequency and improving the user experience.

[0087] Embodiment 3: The spring 300 of the existing multi-core pen is sandwiched between the sliding button 3 and the pen body 100, which is difficult to assemble and is easily interfered with other springs 300 during use due to the sliding and tilting of the sliding button 3. In order to reduce the difficulty of assembling the spring 300 and improve the reliability of use, the following improvements are made to the installation method of the spring 300.

[0088] An embodiment of the present application provides a multi-core pen, comprising: a pen body 100 and a plurality of pen cores 200 .

[0089] The pen holder 100 comprises a rod body 1 and a plurality of sliding buttons 3. A plurality of slots 114 are arranged inside the first end of the rod body 1. The plurality of slots 114 are distributed around the center of the rod body 1. A plurality of through holes 16 are also arranged at the first end of the rod body 1. The through holes 16 are connected to the corresponding slots 114. A plurality of slide grooves 101 are arranged on the second end of the rod body 1. The sliding buttons 3 are slidably arranged in the corresponding slide grooves 101. The slots 114 are arranged opposite to the sliding buttons 3 at corresponding positions.

[0090] The pen core 200 is inserted into the rod body 1 and connected to the corresponding sliding button 3;

[0091] A plurality of springs 300, wherein the springs 300 are located in the rod body 1 and are configured to apply elastic force to the pen core 200;

[0092] The spring 300 is inserted into the corresponding slot 114 , the tail of the pen core 200 is inserted on the sliding button 3 , the head of the pen core 200 is inserted into the spring 300 , and the spring 300 is clamped between the pen core 200 and the pen body 100 .

[0093] Specifically, the rod body 1 is provided with a slot 114 at a position away from the sliding button 3, and the positioning spring 300 is installed by using the slot 114. During assembly, the head of the pen core 200 is covered with the spring 300 and inserted into the rod body 1, and the spring 300 will be inserted into the corresponding slot 114; when assembling other pen cores 200, the pen core 200 moves along the inner wall of the rod body 1 toward the corresponding slot 114 so that the spring 300 on the pen core 200 is also inserted into the slot 114, thereby avoiding mutual interference between the springs 300 due to the tilted installation of the sliding button 3 during assembly.

[0094] At the same time, during use, since the spring 300 is limited and supported by the corresponding slot 114 and the refill 200, the spring 300 will not be skewed during compression to avoid interference with other springs 300 of the same proportion.

[0095] In one embodiment, the rod body 1 includes a first rod 11 and a second rod 12;

[0096] The first rod 11 is provided with the slot 114 and the through hole 16, and the second rod 12 is provided with the slide groove 101;

[0097] The sliding groove 101 is disposed at one end of the second rod 12 , and an inserting portion 121 is disposed at the other end of the second rod 12 . The inserting portion 121 is inserted into the first rod 11 .

[0098] Specifically, the rod body 1 adopts a split design. During assembly, the sliding button 3 is assembled on the second rod 12, and then the pen core 200 is connected to the corresponding sliding button 3. The pen core 200 is covered with a spring 300 and can be installed in the first rod 11. During the process of inserting the pen core 200 into the first rod 11, the pen core 200 is in a substantially straight state, so that multiple springs 300 can be accurately inserted into the corresponding slots 114 at one time, thereby improving the assembly efficiency.

[0099] In one embodiment, the inner wall of the first rod 11 is provided with a plurality of guide portions 113 matching the slots 114, and the guide portions 113 extend from the slots 114 along the length direction of the rod body 1 toward the second rod 12;

[0100] The guide portion 113 is configured to guide the spring 300 to be inserted into the corresponding slot 114 .

[0101] Specifically, when the pen core 200 is installed into the first rod 11 , the pen core 200 is guided by the guide portion 113 formed along the inner wall of the first rod 11 so as to be accurately inserted into the corresponding slot 114 .

[0102] The cross section of the guide portion 113 is arc-shaped to match the outer arc surface structure of the pen core 200, so as to guide the replacement.

[0103] In another embodiment, a limiting rib 122 is provided on the outer wall of the plug-in portion 121 , and a limiting groove 112 is provided on the inner wall of the first rod 11 . The limiting groove 112 and the limiting groove extend along the length direction of the pen barrel 100 , and the limiting rib 122 is inserted into the limiting groove 112 .

[0104] Specifically, the limiting rib 122 and the limiting groove 112 cooperate to more accurately connect the first rod 11 and the second rod 12 .

[0105] In yet another embodiment, the rod body 1 further includes a connecting sleeve 13 , which is rotatably disposed on the second rod 12 , and the connecting sleeve 13 is threadedly connected to the first rod 11 .

[0106] Specifically, the first rod 11 and the second rod 12 are connected by means of the connecting sleeve 13, so that the first rod 11 and the second rod 12 can be prevented from rotating relative to each other. For details, please refer to the description of the second embodiment, which will not be described here.

[0107] In another embodiment of the present application, for the sliding button 3, raised guide ribs 103 are provided on both side walls of the sliding groove 101, and guide grooves 31 are provided on both sides of the sliding button 3, and the guide ribs 103 are slidably provided in the guide grooves 31.

[0108] Specifically, in order to improve the sliding reliability of the sliding button 3, a guide rib 103 is formed on the rod body 1, so that the guide rib 103 can cooperate with the guide grooves 31 on both sides of the sliding button 3, thereby improving the smoothness of pressing.

[0109] By setting a plurality of slots 114 in the pen body 100, during the process of assembling the refill 200 and the spring 300, the tail of the refill 200 is connected to the sliding button 3, and the spring 300 is sleeved on the refill 200 and inserted into the pen body 100. During assembly, since the spring 300 is sleeved on the head of the refill 200 and inserted into the slot 114, the head of the pen tip 210 will be aligned with the corresponding slot 114 when inserted into the rod body 1, ensuring that the spring 300 can be accurately inserted into the corresponding slot 114. At the same time, it will not interfere with other assembled springs 300, thereby reducing the difficulty of assembly and improving the assembly efficiency. In addition, during use, on the one hand, the spring 300 can be firmly and reliably positioned and supported by each slot 114; on the other hand, the pen core 200 is pushed by the sliding button 3 to squeeze the spring 300 during use, and the spring 300 can be isolated from other springs 300 by the slot 114; and, in the process of the spring 300 being compressed, the spring 300 is limited by the pen core 200 and supported by the slot 114, so that interference between the spring 300 and the adjacent spring 300 can be avoided, thereby improving the reliability of use.

[0110] Embodiment 4. Based on the above embodiments 1 to 3, a multi-core pen provided in the present application may also include the structural configuration of the multi-core pen in embodiment 1, embodiment 2, and / or embodiment 3. For the specific structure, reference may be made to the above embodiments 1 to 3, which will not be elaborated here.

[0111] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by technicians familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A multi-core pen, characterized in that: include: A pen holder, the pen holder comprising a rod body and a plurality of sliding buttons, the rod body comprising a first rod, a second rod and a connecting sleeve; the second rod is provided with a plurality of sliding grooves, the sliding buttons are slidably arranged in the corresponding sliding grooves; the connecting sleeve is rotatably arranged on the second rod, and the connecting sleeve is threadedly connected to the first rod; A plurality of pen refills are located in the pen barrel and connected to the corresponding sliding buttons.

2. The multi-core pen according to claim 1, characterized in that: The cross section of the inner wall of the first rod is a non-circular structure.

3. The multi-core pen according to claim 2, characterized in that: The cross section of the inner wall of the first rod is a polygonal structure.

4. The multi-core pen according to claim 1, characterized in that: The outer peripheral wall of the first rod forms a gripping portion, and the cross section of the outer wall of the gripping portion is a polygonal structure.

5. The multi-core pen according to claim 3 or 4, characterized in that: The connection between the two adjacent sides of the polygonal structure is smooth; And / or, the sides of the polygonal structure are straight lines or arcs.

6. The multi-core pen according to claim 1, characterized in that: One end of the second rod is provided with the sliding groove, and the other end of the second rod is provided with an inserting portion, the outer contour of the outer wall of the inserting portion matches the inner contour of the inner wall of the first rod; the inserting portion is inserted into the first rod.

7. The multi-core pen according to claim 6, characterized in that: The outer wall of the plug-in portion is provided with a limiting rib, the inner wall of the first rod is provided with a limiting groove, the limiting rib and the limiting groove extend along the length direction of the pen rod, and the limiting rib is inserted into the limiting groove.

8. The multi-core pen according to claim 1, characterized in that: The inner wall of the connecting sleeve is provided with an internal thread and a positioning rib, the outer wall of the second rod is provided with an annular groove, the connecting sleeve is sleeved on the outside of the second rod, the positioning rib is clamped in the annular groove and the positioning rib is slidably arranged in the annular groove around the axial direction of the connecting sleeve; The other end of the first rod is provided with an external thread, and the connecting sleeve is connected to the first rod through the cooperation of the internal thread and the external thread.

9. The multi-core pen according to claim 1, characterized in that: The pen body also includes a pen head, which is rotatably arranged at the end of the first rod away from the second rod. The pen head is provided with an inlet and outlet hole, which is eccentrically arranged on one side of the axis of the pen head. The inner wall of the pen head is also provided with a rotation driving part.

10. The multi-core pen according to claim 9, characterized in that: The rotation driving part protrudes from the inner wall of the pen head, and a guide slope is provided on the side of the rotation driving part, and the guide slope extends obliquely toward the direction of the inlet and outlet hole; The guiding inclined surface is configured to abut against the pen core to drive the pen head to rotate on the pen shaft.

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