Multi-cartridge pen

Abstract

Disclosed in the present invention is a multi-cartridge pen. The multi-cartridge pen comprises: a pen holder, which comprises a holder body, a pen head and a plurality of sliding buttons, wherein the pen head is rotatably arranged at a first end of the holder body, the pen body is provided with an inlet / outlet hole, and the inlet / outlet hole is eccentrically arranged on one side of the axis of the pen head, a rotary driving portion is further provided on an inner wall of the pen head, a plurality of sliding grooves are provided at a second end of the holder body, and the sliding buttons are slidably arranged in the corresponding sliding grooves; and a plurality of cartridges, which are inserted into the holder body and are connected to the corresponding sliding buttons, wherein the rotary driving portion is configured to be abutted against by the cartridges to drive the pen head to rotate on the pen holder and guide pen tips of the cartridges to be inserted into the inlet / outlet hole, and the inlet / outlet hole is configured to allow the pen tips of the cartridges to extend out of the pen head. The usage reliability of the multi-cartridge pen and the usage experience of users are improved.

Description

Multi-core pen TECHNICAL FIELD

[0001] The present application relates to a multi-core pen. BACKGROUND

[0002] The pen with multiple cores (such as stationery writing pen or eyeliner or eye shadow) is 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, in use, the process of switching different cores to extend to the outside of the pen head, the core needs to be guided by the arc surface of the pen head and bent to extend from the import and export of the center part of the pen head. In this way, during use, the core is in a bent state in the pen barrel for a long time, on the one hand, the core is prone to shaking in the pen barrel due to the bending of the core head under stress, on the other hand, the core is deformed, causing poor pressing or retraction, thereby affecting the user experience and use reliability. TECHNICAL PROBLEM

[0004] In view of this, how to design a technology to improve the use reliability to improve the user experience is the technical problem to be solved by the present application. TECHNICAL SOLUTION

[0005] The present application provides a multi-core pen, which realizes to improve the use reliability and user experience of the multi-core pen.

[0006] To achieve the above purpose, the present application adopts the following technical scheme:

[0007] The present application provides a pen barrel, which comprises a barrel body, a pen head and a plurality of sliding buttons, the pen head is rotatably arranged at the first end of the barrel body, the pen head is provided with an import and export hole, the import and export hole is eccentrically arranged on one side of the axis of the pen head, and the inner wall of the pen head is further provided with a rotation driving part; a plurality of sliding grooves are arranged on the second end of the barrel body, and the sliding buttons are slidably arranged in the corresponding sliding grooves;

[0008] A plurality of cores are inserted into the barrel body and connected to the corresponding sliding buttons;

[0009] A spring is located in the barrel body and configured to apply a spring force to the core or the sliding button;

[0010] The rotating driving part is configured to abut against the refill to drive the pen head to rotate on the pen barrel and guide the pen tip of the refill to be inserted into the access hole.

[0011] In an embodiment of the present application, the rotating driving part protrudes from the inner wall of the pen head, and the side part of the rotating driving part is provided with a guide slope which extends obliquely towards the direction of the access hole.

[0012] The guide slope is configured to abut against the refill to drive the pen head to rotate on the pen barrel.

[0013] In an embodiment of the present application, the two side parts of the rotating driving part are respectively provided with the guide slope.

[0014] In an embodiment of the present application, the first end part of the rod body is provided with a support shaft, the axis of the support shaft is collinear with the rotation axis of the pen head, and the pen head is rotatably arranged on the support shaft.

[0015] In an embodiment of the present application, the pen head is provided with a shaft hole, the access hole is arranged on one side of the shaft hole, the support shaft is inserted into the shaft hole, and the free end part of the support shaft is further provided with an anti-falling head which is arranged on the outside of the pen head to prevent the pen head from falling off the support shaft.

[0016] In an embodiment of the present application, the end face of the first end part of the rod body is provided with the support shaft, the end face of the first end part of the rod body is provided with a plurality of through holes which are configured to pass through the refill at the corresponding position, and the through holes are arranged opposite to the corresponding sliding buttons.

[0017] In an embodiment of the present application, the rod body comprises a first rod, a second rod and a connecting sleeve.

[0018] One end part of the first rod is provided with the pen head, and the other end part of the first rod is provided with an external thread.

[0019] One end part of the second rod is provided with the sliding groove, and the other end part of the second rod is rotatably provided with the connecting sleeve.

[0020] The inner wall of the connecting sleeve is provided with an internal thread, and the connecting sleeve is connected on the first rod through the cooperation of the internal thread and the external thread.

[0021] In an embodiment of the present application, the inner wall of the connecting sleeve is provided with internal threads and positioning ribs, the outer wall of the second rod is provided with an annular clamping groove, the connecting sleeve is sleeved on the outside of the second rod, the positioning ribs are clamped in the annular clamping groove, and the positioning ribs are slidably arranged in the annular clamping groove around the axis direction of the connecting sleeve.

[0022] The other end of the first rod is provided with external threads, and the connecting sleeve is connected on the first rod through cooperation of the internal threads and the external threads.

[0023] In an embodiment of the present application, the two side walls of the sliding groove are provided with protruding guide ribs, the two sides of the sliding button are provided with guide grooves, and the guide ribs are slidably arranged in the guide grooves.

[0024] In an embodiment of the present application, the inside of the first end of the rod body is provided with a plurality of insertion grooves, the plurality of insertion grooves are distributed around the center of the rod body, the first end of the rod body is further provided with a plurality of through holes, the through holes are communicated with the corresponding insertion grooves,

[0025] The spring is inserted in the corresponding insertion groove, the tail of the refill is inserted on the sliding button, the head of the refill is inserted in the spring, and the spring is clamped between the refill and the pen rod. Beneficial effects

[0026] The technical scheme of the present application has the following technical effects relative to the prior art: the end of the rod body is provided with a rotatable pen head, the eccentric inlet and outlet hole is arranged on the pen head, the inner wall of the pen head is further provided with a rotation driving part, the refill abuts against the rotation driving part to drive the pen head to rotate during the sliding process of the sliding button towards the pen head, the inlet and outlet hole is rotated to be arranged opposite to the refill to make the pen nib of the refill to extend to the outside of the inlet and outlet hole, since the pen head can rotate freely, the inlet and outlet hole can be aligned with the corresponding sliding button, and the refill can be basically kept in a non-deformed state, so that the generation of shaking can be reduced during use since the refill is basically not deformed, and the refill can be retracted more smoothly, so as to improve the use reliability and user experience. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 is a structural schematic view of an embodiment of the multi-core pen of the present application;

[0028] Fig. 2 is a sectional view of the multi-core pen in Fig. 1;

[0029] Fig. 3 is an exploded view of the multi-core pen in Fig. 1;

[0030] Fig. 4 is a structural schematic view of the first rod in Fig. 1;

[0031] Fig. 5 is another structural schematic view of the first rod in Fig. 1;

[0032] Fig. 6 is a sectional view of the first rod in Fig. 1;

[0033] Fig. 7 is a top view of the first rod in Fig. 1;

[0034] Fig. 8 is a structural schematic view of the second rod in Fig. 1;

[0035] Fig. 9 is a structural schematic view of the connecting sleeve in Fig. 1;

[0036] Fig. 10 is a structural schematic view of the pen head in Fig. 1

[0037] Fig. 11 is a sectional view of the pen head in Fig. 1;

[0038] Fig. 12 is a structural schematic view of the sliding button in Fig. 1.

[0039] Reference signs:

[0040] 100, pen rod; 200, pen core; 210, pen tip; 300, spring;

[0041] 1, rod body; 11, first rod; 12, second rod; 13, connecting sleeve; 14, support shaft; 15, anti-coming-off head; 16, through hole;

[0042] 101, sliding groove; 102, sliding support surface; 103, guide rib;

[0043] 111, holding portion; 112, limiting groove; 113, guide portion;

[0044] 121, insertion portion; 122, limiting rib; 123, annular clamping groove;

[0045] 131, positioning rib;

[0046] 2, pen head; 21, access hole; 22, rotary driving portion; 23, sliding guide surface; 221, guide inclined surface; 222, pointed structure;

[0047] 3, sliding button; 31, guide groove. Best mode of the present application

[0048] As shown in FIG. 1-FIG. 12, the present application provides a multi-core pen, which generally comprises a pen barrel 100 and a plurality of pen cores 200, the pen barrel 100 is provided with a sliding button 3 matched with the pen core 200, the tail of the pen core 200 is connected to the corresponding sliding button 3, and the corresponding pen core 200 can be extended to the outside of the pen barrel 100 for use by pressing the sliding button 3; when it is necessary to switch the pen core 200, the other sliding button 3 is pressed to unlock the pressed sliding button 3, and the unlocked sliding button 3 drives the pen core 200 to retract under the action of the spring 300, while the pressed sliding button 3 drives the corresponding pen core 200 to extend to the outside of the pen barrel 100. The mutual locking and unlocking mode between the sliding buttons 3 can refer to the multi-core pen in the conventional technology, which is not limited and described here.

[0049] And for the existing multi-core pen, there are different problems, and the following structure design and improvement are made accordingly.

[0050] Embodiment one, for the multi-core pen in the prior art, because the pen core 200 needs to move towards the center position of the inlet and outlet direction and bend during the extension process, after long time use, the pen core 200 is easy to deform, which reduces the use reliability and affects the user experience, therefore, the following improvement is made for the multi-core pen.

[0051] The embodiment of the present application provides a multi-core pen, comprising: a pen barrel 100 and a plurality of pen cores 200.

[0052] The pen barrel 100 comprises a rod body 1, a pen head 2 and a plurality of sliding buttons 3, the pen head 2 is rotatably arranged at the first end of the pen barrel 100, the pen head 2 is provided with an inlet and outlet hole 21, the inlet and outlet hole 21 is eccentrically arranged on one side of the axis of the pen head 2, and the inner wall of the pen head 2 is further provided with a rotation driving part 22; the second end of the rod body 1 is provided with a plurality of sliding grooves 101, and the sliding button 3 is slidably arranged in the corresponding sliding groove 101.

[0053] The pen core 200 is inserted into the rod body 1 and connected to the corresponding sliding button 3;

[0054] 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 barrel 100 and guide the pen tip 210 of the pen core 200 to be inserted into the inlet and outlet hole 21, and the inlet and outlet hole 21 is configured to extend the pen tip 210 of the pen core 200 to the outside of the pen head 2.

[0055] Specifically, the pen head 2 is rotatably arranged on the pen body 1, and the access hole 21 arranged on the pen head 2 is arranged eccentrically. The eccentric position is determined according to the relative arrangement of the access hole 21 on the pen head 2 and the pen core 200 to be extended.

[0056] For example, with the rotation axis of the pen head 2 as the reference, the plurality of pen cores 200 are arranged around the rotation axis of the pen head 2, and the projection of the pen nib 210 of the pen core 200 in the length direction of the pen core 200 towards the pen head 2 is located in the circular ring region formed by the access hole 21 of the pen head 2 during rotation.

[0057] During the sliding process of the sliding button 3 towards the pen head 2, the pen core 200 abuts against the rotation driving part 22 to drive the pen head 2 to rotate, so that the access hole 21 is rotated to the relative arrangement with the pen core 200 to extend the pen nib 210 of the pen core 200 to the outside of the access hole 21.

[0058] In this way, during use, after the user presses the sliding button 3, the pen nib 210 of the pen core 200 moves towards the pen head 2. Since the pen head 2 is in a conical structure as a whole, the pen nib 210 of the pen core 200 slides along the inner wall of the pen head 2 and finally abuts against the rotation driving part 22.

[0059] The pen nib 210 of the pen core 200 exerts pressure on the rotation driving part 22 to drive the pen head 2 to rotate on the pen body 100 through the rotation driving part 22. With the rotation of the pen head 2, the pen core 200 continues to extend to the outside of the pen body 100, and the pen nib 210 is inserted into the access hole 21 while driving the rotation of the rotation driving part 22.

[0060] Finally, after the pen nib 210 of the pen core 200 extends to the outside of the access hole 21, the center line of the access hole is parallel to the center line of the pen core 200, so that the pen core 200 is not in a bent state in the use state.

[0061] In order to automatically reset the pen core 200 after pressing other sliding buttons 3 to unlock the pressed sliding button 3, a spring 300 is arranged in the pen body 100 to exert a spring force on the pen core 200 or the sliding button 3 to achieve automatic reset.

[0062] The rotation driving part 22 needs to contact the pen nib 210 to drive the pen head 2 to rotate, and the rotation driving part 22 further guides the pen nib 210 to be inserted into the access hole 21 when cooperating with the pen nib 210.

[0063] In an embodiment, the rotating driving part 22 protrudes from the inner wall of the pen head 2, and a guide slope 221 is arranged on the side of the rotating driving part 22, which extends obliquely towards the direction of the access hole 21.

[0064] The guide slope 221 is configured to abut against the pen core 200 to drive the pen head 2 to rotate on the pen barrel 100.

[0065] Specifically, the rotating driving part 22 protrudes from the inner wall of the pen head 2, and the guide slope 221 formed on the side of the rotating driving part 22 can abut against the pen tip 210 of the pen core 200. The guide slope 221 is pressed by the pen tip 210 of the pen core 200 sliding outwards, so as to apply pressure to the pen head 2 through the rotating driving part 22 to drive the pen head 2 to rotate on the pen barrel 100. At the same time, the guide slope 221 extends towards the direction of the access hole 21, so as to finally guide the pen tip 210 to be accurately inserted into the access hole 21.

[0066] Preferably, the two sides of the rotating driving part 22 are respectively provided with the guide slope 221.

[0067] Specifically, the rotating driving part 22 is respectively provided with the guide slope 221 on the two sides, and the guide slope 221 extends to the access hole 21, so that the pen core 200 at different positions can be matched with the corresponding side of the guide slope 221 to drive the pen head 2 to rotate.

[0068] In another embodiment, the rotating driving part 22 is provided with a pointed structure 222 towards the end of the pen barrel 100, and the guide slope 221 extends obliquely from the pointed structure 222 towards the access hole 21.

[0069] Specifically, the rotating driving part 22 is provided with the pointed structure 222, which can ensure that the pen tip 210 is distributed to one side of the guide slope 221 after contacting the pointed structure 222, so as to ensure the use reliability.

[0070] In another embodiment of the present application, in order to ensure that the pen head 2 can smoothly rotate on the pen barrel 100, there are various forms of rotating matching modes between the pen head 2 and the pen barrel 100.

[0071] Mode one, the outer periphery of the first end of the pen barrel 100 is formed with a circular sliding support surface 102, and the inner wall of the pen head 2 is provided with a circular sliding guide surface 23, which is rotatably matched with the sliding support surface 102.

[0072] Specifically, the sliding support surface 102 cooperates with the sliding guide surface 23 to ensure that the pen head 2 can rotate on the pen barrel 100, for example, the sliding guide surface 23 can be sleeved outside the sliding support surface 102 to realize the rotation of the pen head 2 on the pen barrel 100.

[0073] Mode two, the first end of the pen barrel 100 is provided with a support shaft 14, the axis of the support shaft 14 is collinear with the rotation axis of the pen head 2, and the pen head 2 is rotatably arranged on the support shaft 14.

[0074] Specifically, the first end of the pen barrel 100 is provided with an outwardly extending support shaft 14, and the pen head 2 is directly mounted on the support shaft 14 to support the rotation of the pen head 2 relative to the pen barrel 100 through the support shaft 14.

[0075] Further, the pen head 2 is provided with a shaft hole 24, the access hole 21 is arranged on one side of the shaft hole, and the support shaft 14 is inserted into the shaft hole; the free end of the support shaft 14 is further provided with an anti-falling head 15 which abuts against the outside of the pen head 2 and is configured to prevent the pen head 2 from falling off the support shaft 14. Specifically, the pen head 2 is provided with a shaft hole to cooperate with the support shaft 14 to realize the installation of rotation, and the anti-falling head 15 can block the pen head 2 assembled on the support shaft 14 from falling off, thereby improving the use reliability.

[0076] Still further, the end face of the first end of the rod body 1 is provided with the support shaft 14, the end face of the first end of the rod body 1 is provided with a plurality of through holes 16, the through holes 16 are configured to pass through the corresponding positions of the pen core 200, and the through holes 16 are oppositely arranged with the corresponding sliding buttons 3.

[0077] Specifically, the end face of the first end of the rod body 1 is provided with an outwardly extending support shaft 14, and in order to meet the requirement that the pen tip 210 extends out of the rod body 1, the end face of the first end of the rod body 1 is further provided with a through hole 16 matched with the pen core 200, and the pen tip 210 of the pen core 200 extends into the pen head 2 through the through hole 16.

[0078] Mode three, the pen head 2 and the pen barrel 100 can simultaneously adopt the structures of mode one and two, so that the pen head 2 rotates more stably and smoothly on the pen barrel 100.

[0079] By setting the pen head 2 rotatably at the end of the rod body 1, the eccentric inlet and outlet hole 21 is set on the pen head 2, and the inner wall of the pen head 2 is further provided with a rotation driving part 22. During the sliding process of the sliding button 3 towards 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 opposite to the pen core 200 for the pen tip 210 of the pen core 200 to extend to the outside of the inlet and outlet hole 21. Since the pen head 2 can freely rotate, the inlet and outlet hole 21 can be aligned with the corresponding sliding button 3, and the pen core 200 can be basically kept in a non-deformed state. In this way, during use, the generation of shaking can be reduced due to the fact that the pen core 200 is basically not deformed, and the pen core 200 can be retracted more smoothly to improve the use reliability and user experience.

[0080] In the second embodiment, for a multi-core pen, the overall outer diameter of the pen barrel 100 will increase due to the internal arrangement of multiple pen cores 200. In order to reasonably design the outer diameter of the pen barrel 100, the outer diameter of the pen core 200 will be reduced, resulting in a decrease in the capacity of the pen core 200. In order to improve the capacity of the pen core 200 in the multi-core pen, the following structural improvements are made to the multi-core pen.

[0081] The embodiment of the present application provides a multi-core pen, which comprises a pen barrel 100 and multiple pen cores 200.

[0082] The pen barrel 100 comprises a rod body 1 and multiple sliding buttons 3. The rod body 1 comprises a first rod 11, a second rod 12 and a connecting sleeve 13. The second rod 12 is provided with multiple sliding grooves 101, and the sliding button 3 is slidably arranged in the corresponding sliding groove 101. The connecting sleeve 13 is rotatably arranged on the second rod 12, and the connecting sleeve 13 is threadedly connected with the first rod 11.

[0083] The pen core 200 is arranged in the pen barrel 100 and connected to the corresponding sliding button 3.

[0084] Specifically, for the pen barrel 100, the rod body 1 is designed in a split body, and during assembly, the first rod 11 and the second rod 12 are connected and fixed by the connecting sleeve 13, and the first rod 11 and the second rod 12 are relatively stationary.

[0085] Specifically, the sliding button 3 is assembled to the second rod 12, and the pen core 200 is connected to the corresponding sliding button 3, and then the first rod 11 and the second rod 12 can be connected.

[0086] The connecting sleeve 13 is preassembled on the second rod 12, and the connecting sleeve 13 can rotate on the second rod 12 and cannot be pulled off the second rod 12 in the length direction. In this way, when the first rod 11 and the second rod 12 are connected, the second rod 12 is butted against the first rod 11 and the pen refill 200 is inserted into the first rod 11, the connecting sleeve 13 is rotated relative to the second rod 12 and is fastened together with the first rod 11 in a threaded connection. During the rotation of the connecting sleeve 13, the first rod 11 and the second rod 12 do not rotate relative to each other, so that the pen refill 200 can be more closely attached to the inner wall of the first rod 11, and there is no need to reserve an excessively large gap due to the rotation of the pen refill 200 in the first rod 11. In this way, without increasing the outer circumferential size of the first rod 11, the outer circumferential size of the pen refill 200 can be effectively increased to increase the capacity of the pen refill 200.

[0087] In order to automatically reset the pen refill 200 after pressing other sliding buttons 3 to unlock the pressed sliding button 3, a spring 300 is arranged in the pen barrel 100, and the spring 300 applies elastic force to the pen refill 200 or the sliding button 3 to achieve automatic reset.

[0088] In an embodiment, the cross section of the inner wall of the first rod 11 is a non-circular structure.

[0089] 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 size of the first rod 11, and further reduce the overall size of the first rod 11.

[0090] For example, the cross section of the inner wall of the first rod 11 is a polygonal structure. Specifically, as shown in FIG. 7, the cross section of the inner wall of the first rod 11 is a triangular structure, and correspondingly, three pen refills 200 are arranged, which will make full use of the internal space of the first rod 11 for installation.

[0091] Further, the outer circumferential wall of the first rod 11 forms a holding portion 111, and the cross section of the outer wall of the holding portion 111 is a polygonal structure.

[0092] Specifically, in order to maximize the reduction of the outer circumferential size of the pen barrel 100, the holding 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 holding portion 111 held by the user's hand can effectively reduce the outer circumferential size, thereby improving the user's convenience.

[0093] In the polygonal structure, the adjacent two side connecting portions are excessively smooth; and / or the sides of the polygonal structure are straight lines or arcs.

[0094] In another embodiment, one end of the second rod 12 is provided with the sliding groove 101, and the other end of the second rod 12 is provided with a plug-in part 121, the outer contour of the outer wall of the plug-in part 121 matches the inner contour of the inner wall of the first rod 11; the plug-in part 121 is inserted into the first rod 11.

[0095] When assembled, the plug-in part 121 of the second rod 12 is inserted into the first rod 11, and then further fastened with the first rod 11 by the connecting sleeve 13.

[0096] Further, the outer wall of the plug-in part 121 is provided with a limiting rib 122, and the inner wall of the first rod 11 is provided with a limiting groove 112, the limiting groove 112 and the limiting groove extend along the length direction of the pen rod 100, and the limiting rib 122 is inserted into the limiting groove 112.

[0097] Specifically, in order to improve the assembly accuracy, during the plug-in assembly of the first rod 11 and the second rod 12, the limiting rib 122 is inserted into the limiting groove 112 to prevent the design and improve the assembly accuracy.

[0098] In another embodiment, in order to ensure that the connecting sleeve 13 can freely rotate on the second rod 12 while not falling off the second rod 12. The inner wall of the connecting sleeve 13 is provided with an inner thread and a positioning rib 131, and the outer wall of the second rod 12 is provided with an annular clamping 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 clamping groove 123, and the positioning rib 131 is slidably arranged in the annular clamping groove 123 around the axis direction of the connecting sleeve 13;

[0099] The other end of the first rod 11 is provided with an external thread, and the connecting sleeve 13 is connected on the first rod 11 by matching the inner thread and the external thread.

[0100] Specifically, the connecting sleeve 13 is pre-assembled on the second rod 12, the connecting sleeve 13 is sleeved on the plug-in part 121 of the second rod 12, and the positioning rib 131 is clamped in the annular clamping groove 123 to prevent falling off, and when the connecting sleeve 13 rotates, the positioning rib 131 rotates in the annular clamping groove 123.

[0101] By designing the rod body 1 in a split body, the first rod 11 and the second rod 12 are connected through the connecting sleeve 13, the connecting sleeve 13 can rotate circumferentially but cannot move axially relative to the second rod 12, and the connecting sleeve 13 is threadedly connected to the first rod 11. Thus, when assembling, the pen core 200 connected to the sliding button 3 of the second rod 12 is inserted into the first rod 11, and then the connecting sleeve 13 is rotated to be threadedly connected to the first rod 11 and to 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. Thus, the capacity of the pen core 200 can be effectively increased without increasing the outer circumferential size of the first rod 11, thereby reducing the replacement frequency of the user and improving the user experience.

[0102] In the third embodiment, the spring 300 of the existing multi-core pen is clamped between the sliding button 3 and the pen barrel 100, which has a large assembly difficulty and is prone to interference with other springs 300 during use due to the inclination of the sliding button 3. In order to reduce the assembly difficulty of the spring 300 and improve the use reliability, the installation mode of the spring 300 is improved as follows.

[0103] The embodiment of the present application provides a multi-core pen, comprising a pen barrel 100 and a plurality of pen cores 200.

[0104] The pen barrel 100 comprises a rod body 1 and a plurality of sliding buttons 3. The first end of the rod body 1 is internally provided with a plurality of insertion slots 114, and the plurality of insertion slots 114 are distributed around the center of the rod body 1. The first end of the rod body 1 is also provided with a plurality of through holes 16, and the through holes 16 communicate with the corresponding insertion slots 114. The second end of the rod body 1 is provided with a plurality of sliding grooves 101, and the sliding buttons 3 are slidably arranged in the corresponding sliding grooves 101. The insertion slots 114 are arranged opposite to the sliding buttons 3 at the corresponding positions.

[0105] The pen core 200 is inserted into the rod body 1 and connected to the corresponding sliding button 3.

[0106] A plurality of springs 300 are arranged in the rod body 1 and configured to apply an elastic force to the pen core 200.

[0107] The spring 300 is inserted into the corresponding insertion slot 114, the tail of the pen core 200 is inserted into 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 barrel 100.

[0108] 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 refill 200 is sleeved with the spring 300, and the spring 300 is inserted into the corresponding slot 114; when other refills 200 are assembled, the refill 200 moves along the inner wall of the rod body 1 towards the corresponding slot 114 so that the spring 300 on the refill 200 is also inserted into the slot 114, thereby avoiding mutual interference between the springs 300 due to the inclined installation of the sliding button 3 during assembly.

[0109] Meanwhile, 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 tilted during compression to avoid interference with other springs 300.

[0110] In an embodiment, the rod body 1 includes a first rod 11 and a second rod 12.

[0111] The first rod 11 is internally provided with the slot 114 and the through hole 16, and the second rod 12 is provided with the sliding groove 101.

[0112] One end of the second rod 12 is provided with the sliding groove 101, and the other end of the second rod 12 is provided with a plug-in portion 121 which is inserted into the first rod 11.

[0113] Specifically, the rod body 1 adopts a split design, and during assembly, the sliding button 3 is assembled onto the second rod 12, then the refill 200 is connected with the corresponding sliding button 3, and the spring 300 sleeved on the refill 200 can be assembled into the first rod 11. During insertion of the refill 200 into the first rod 11, the refill 200 is in a substantially flat state, so as to accurately insert a plurality of springs 300 into corresponding slots 114 at one time, thereby improving the assembly efficiency.

[0114] In an embodiment, the inner wall of the first rod 11 is provided with a plurality of guide portions 113 matched with the slots 114, and the guide portions 113 extend from the slots 114 towards the second rod 12 along the length direction of the rod body 1.

[0115] The guide portions 113 are configured to guide the spring 300 to be inserted into the corresponding slot 114.

[0116] Specifically, during assembly of the refill 200 into the first rod 11, the refill 200 is guided along the guide portions 113 formed on the inner wall of the first rod 11 to be accurately inserted into the corresponding slot 114.

[0117] The cross section of the guiding portion 113 is arc-shaped to match the outer circumferential arc surface structure of the refill 200, thereby guiding the replacement.

[0118] In another embodiment, the outer wall of the insertion portion 121 is provided with a limiting rib 122, and the inner wall of the first rod 11 is provided with a limiting groove 112. The limiting groove 112 and the limiting groove extend along the length direction of the pen rod 100, and the limiting rib 122 is inserted into the limiting groove 112.

[0119] Specifically, the limiting rib 122 and the limiting groove 112 are matched to more accurately connect the first rod 11 and the second rod 12.

[0120] In yet another embodiment, the rod body 1 further comprises a connecting sleeve 13, which is rotatably arranged on the second rod 12 and is threadedly connected with the first rod 11.

[0121] Specifically, the first rod 11 and the second rod 12 are connected by means of the connecting sleeve 13, which can avoid relative rotation of the first rod 11 and the second rod 12. For details, refer to the description of Embodiment Two, which will not be repeated here.

[0122] In another embodiment of the present application, for the sliding button 3, the two side walls of the sliding groove 101 are provided with protruding guiding ribs 103, and the two sides of the sliding button 3 are provided with guiding grooves 31. The guiding ribs 103 are slidably arranged in the guiding grooves 31.

[0123] Specifically, in order to improve the sliding reliability of the sliding button 3, the guiding ribs 103 are formed on the rod body 1 to cooperate with the guiding grooves 31 on the two sides of the sliding button 3 through the guiding ribs 103, thereby improving the smoothness of pressing.

[0124] By setting multiple slots 114 in the pen barrel 100, in 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 barrel 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 nib 210 will be aligned with the corresponding slot 114 when inserted into the barrel 1, ensuring that the spring 300 can be accurately inserted into the corresponding slot 114, and at the same time, it will not interfere with other assembled springs 300, thereby reducing the assembly difficulty and improving the assembly efficiency. In addition, during use, on the one hand, each slot 114 can stably and reliably position and support the spring 300, and on the other hand, the refill 200 will press the spring 300 when pushed by the sliding button 3 during use, and the spring 300 can be isolated from other springs 300 by the slot 114, and during the compression of the spring 300, the spring 300 is both limited by the refill 200 and supported by the slot 114, which can avoid interference between the spring 300 and the adjacent spring 300, thereby improving the use reliability.

[0125] In the fourth embodiment, based on the above-mentioned first to third embodiments, the multi-core pen provided by the present application can also include the structural configuration of the multi-core pen in the first, second, and / or third embodiments. For specific structures, reference can be made to the above-mentioned first to third embodiments, which will not be repeated here.

[0126] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A multi-tip pen characterized by comprising: The utility model relates to a pen barrel, the pen barrel includes the pole body, the pen head and a plurality of sliding buttons, the pen head is rotatably arranged at the first end of the pole body, the pen head is provided with the access hole, the access hole is arranged on the one side of the axis of the pen head, the inner wall of the pen head is further provided with the rotation drive part, the second end of the pole body is provided with a plurality of sliding grooves, the sliding button is slidably arranged in the corresponding sliding groove, a plurality of pen cores are inserted in the pole body and connected to the corresponding sliding buttons, a spring is located in the pole body and is configured to apply a spring force to the pen core or the sliding button, wherein the rotation drive part is configured to be abutted by the pen core to drive the pen head to rotate on the pen barrel and guide the pen tip of the pen core to be inserted into the access hole, and the access hole is configured to allow the pen tip of the pen core to protrude outside the pen head. The rotation drive part protrudes from the inner wall of the pen head, and the side of the rotation drive part is provided with a guide slope that extends obliquely towards the access hole.

2. The multi-tip pen according to claim 1, characterized by The guide slope is configured to abut the pen core to drive the pen head to rotate on the pen barrel. The two sides of the rotation drive part are respectively provided with the guide slope.

3. The multi-tip pen according to claim 2, characterized by The first end of the pole body is provided with a support shaft, the axis of the support shaft is collinear with the rotation axis of the pen head, and the pen head is rotatably arranged on the support shaft.

4. The multi-tip pen according to claim 1, characterized by The pen head is provided with a shaft hole, the access hole is arranged on one side of the shaft hole, and the support shaft is inserted into the shaft hole; the free end of the support shaft is further provided with a anti-lost head that abuts against the outside of the pen head and is configured to prevent the pen head from falling off the support shaft.

5. The multi-tip pen according to claim 4, wherein The end surface of the first end of the pole body is provided with the support shaft, the end surface of the first end of the pole body is provided with a plurality of through holes configured to allow the pen core at the corresponding position to pass through, and the through hole is arranged opposite to the corresponding sliding button.

6. The multi-tip pen according to claim 5, wherein The pole body includes a first rod, a second rod and a connecting sleeve.

7. The multi-tip pen according to claim 1, wherein One end of the first rod is provided with the pen head, and the other end of the first rod is provided with an external thread. One end of the second rod is provided with the sliding groove, and the connecting sleeve is rotatably arranged at the other end of the second rod. The inner wall of the connecting sleeve is provided with an internal thread, and the connecting sleeve is connected to the first rod through the cooperation of the internal thread and the external thread. 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 clamping groove, the connecting sleeve is sleeved on the outside of the second rod, the positioning rib is clamped in the annular clamping groove, and the positioning rib is slidably arranged in the annular clamping groove around the axis direction of the connecting sleeve.

8. The multi-tip pen according to claim 7, characterized by 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. The two side walls of the sliding groove are provided with protruding guide ribs, and the two sides of the sliding button are provided with guide grooves, and the guide ribs are slidably arranged in the guide grooves.

9. The multi-tip pen according to claim 1, wherein ​ 10. The multi-tip pen according to claim 1, wherein The first end of the rod body is internally provided with a plurality of slots, which are distributed around the center of the rod body, and the first end of the rod body is also provided with a plurality of through holes, which communicate with the corresponding slots, The spring is inserted into the corresponding slot, the tail of the refill is inserted on the sliding button, the head of the refill is inserted into the spring, and the spring is clamped between the refill and the pen rod.

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