Double-layer structure pen point and writing stationery

Abstract

The invention discloses a double-layer framework pen point and writing stationery. The double-layer framework pen point comprises a bead seat assembly, the bead seat assembly comprises an installation seat, a first pipe body and a second pipe body, installation insertion holes which are communicated with one another are formed in the installation seat, the first pipe body is a hard pipe, the second pipe body is an elastic pipe, and a bowl opening is formed in the first end of the first pipe body; the second pipe body is sleeved outside the first pipe body; the first end part of the second pipe body wraps the first end part of the first pipe body and surrounds the outer side of the bowl opening, and the second end part of the first pipe body and the second end part of the second pipe body are inserted into the mounting insertion hole; the first end part of the first pipe body and the first end part of the second pipe body are positioned outside the mounting seat; and the ball bead is arranged in the bowl opening. The bowl opening protection capability of writing stationery is improved, so that stable writing of the writing tool is ensured, and the use reliability and the user use experience are improved.

Description

Technical Field

[0001] The present application relates to the technical field of stationery products, and in particular to a double-layer structure pen head and writing stationery. Background Art

[0002] Writing tools are important learning tools for students. They use writing tools for a long time for studying and exams, and various types of ballpoint pens with good writing experience have become the mainstream writing tools in the market.

[0003] The ballpoint pen has a double-layer ball made of stainless steel, and the ball is rolled to write with ink. There are problems with the use of various ballpoint pens. If the pen tip falls down and hits the ball seat accidentally during use, it will cause poor writing.

[0004] Chinese patent announcement number CN220332320U discloses a bullet pen tip structure, which relates to the technical field of pen tips, including a pen tip body, a cavity for ink circulation is provided on the pen tip body, a steel ball is rotatably installed at the end of the pen tip body, and a protective component is provided inside, the protective component includes an elastic member and a limit plate fixed on the inner wall of the pen tip body, and a plurality of ink outlet holes are provided on the upper edge of the limit plate, the elastic member is in a compressed state and its two opposite sides are respectively pressed against the steel ball and the limit plate, a part of the steel ball protrudes from the outer side of the pen tip body, and the steel ball can squeeze into the inside of the pen tip body and further compress the elastic member; through the setting of the protective component, when the bullet pen tip collides with the ground, under the action of the impact force, the steel ball can squeeze into the inside of the pen tip body and further compress the elastic member, so as to avoid the rigid collision between the steel ball and the ground. This scheme can achieve buffering by setting a compressed elastic member inside the pen tip, but the space inside the pen tip is small, and the effect of achieving buffering is also relatively limited. When the pen tip body is damaged, it still cannot guarantee normal sketching.

[0005] Chinese patent announcement number CN216783137U discloses a drop-resistant and leak-resistant semi-needle gourd double-ball spring pen tip, including a main body, the main body is rod-shaped and is provided with an inner hole along the axial direction, the inner hole is provided with a first ball, a second ball and a spring from front to back, the front end of the inner hole is provided with an annular partition forming a first ball rotation cavity, the annular partition is provided with a plum blossom groove, the first ball is partially exposed at the port at the front end of the inner hole, the rear end of the spring is limited in the inner hole, the key is that the main body includes a pen tip, a needle tube part and a bullet part from front to back, the diameter of the needle tube part is 1mm~1.2mm, and the bullet part includes a rear part with a diameter of 2.2 mm~2.4mm and a front part with a diameter gradually reduced from the rear to the needle tube part. Although the spring itself can buffer the ball body, the elastic buffering is also limited, and the protection of the bowl mouth is insufficient.

[0006] Chinese patent announcement number CN220095988U discloses a drop-proof ballpoint pen, including an ink tube, a ball seat body is fixedly connected to the lower surface of the ink tube, a ball is arranged on the lower surface of the ball seat body, a first hole is slidably connected to the outer wall of the ink tube, the first hole is opened inside the sponge column, the outer wall of the sponge column is fixedly connected to a sliding rod, the sliding groove is opened on the inner wall of the pen holder, the outer wall of the pen holder is fixedly connected to a silicone sleeve, and the second hole is opened inside the silicone pad. In the utility model, the outer wall of the ink tube is in line with the inner wall of the first hole inside the sponge column, the sponge column protects the ink tube to prevent damage caused by falling, the pen holder is provided with a second layer of protection, the silicone sleeve on the outer wall of the pen holder protects the whole, the ball seat body and the ball are protected in the second hole inside the silicone pad to prevent damage caused by falling, and the ballpoint pen can be fully protected from falling. Although the design of the whole pen structure can protect the product when it falls, a larger space has to be used to realize the function, which greatly increases the cost of the product.

[0007] Therefore, how to design a technology with good elastic buffering function and bowl rim protection function and stable writing is the technical problem to be solved by this application. Summary of the invention

[0008] The present application provides a double-layer structure pen tip and writing stationery, which can improve the bowl protection ability of the writing stationery to ensure that the writing tool can write stably, thereby improving the reliability of use and the user experience.

[0009] In order to achieve the above objectives, this application adopts the following technical solutions: The present application provides a double-layer structure pen tip, comprising: A bead seat assembly, the bead seat assembly comprises a mounting seat, a first tube body and a second tube body, the mounting seat is provided with mutually connected mounting sockets, the first tube body is a hard tube, the second tube body is an elastic tube, the first end of the first tube body forms a bowl mouth; the second tube body is sleeved on the outside of the first tube body; the first end of the second tube body wraps the first end of the first tube body and surrounds the outside of the bowl mouth, the second end of the first tube body and the second end of the second tube body are inserted into the mounting socket, and the first end of the first tube body and the first end of the second tube body are located outside the mounting seat; A ball is arranged in the bowl mouth.

[0010] In one embodiment of the present application, a buffer portion is further provided on the inner tube wall of the second end portion of the second tube body; An end surface of the second end portion of the first tube body abuts against the buffer portion.

[0011] In one embodiment of the present application, the buffer portion is in an annular structure; or, the buffer portion includes a plurality of buffer sub-portions, and the plurality of buffer sub-portions are distributed around a center line of the second tube body.

[0012] In one embodiment of the present application, a plurality of positioning parts are further provided at the first end of the first tube body, wherein the positioning parts form positioning grooves on the outer wall of the first tube body, and the positioning parts form positioning protrusions on the inner wall of the first tube body; The ball also rests on the positioning protrusion.

[0013] In one embodiment of the present application, the inner wall of the first end portion of the second tube body is further provided with a mounting protrusion, and the mounting protrusion is located in the corresponding positioning groove.

[0014] In one embodiment of the present application, the mounting seat includes a seat body and a mounting head, the seat body is formed with an assembly socket, the mounting head is formed with the assembly socket, and the mounting head is inserted into the assembly socket; The second end of the first tube body and the second end of the second tube body are inserted into the mounting socket in the mounting head.

[0015] The present application also provides a writing stationery, comprising: pen; A pen core, the pen core comprising a core head and an ink tank, the core head adopts the above-mentioned double-layer structure pen head, and the core head is arranged on the ink tank; Wherein, the pen core is arranged in the pen holder.

[0016] In one embodiment of the present application, the writing stationery comprises a plurality of the refills and a plurality of springs; The pen holder comprises a rod body, a pen tip and a plurality of sliding buttons, wherein the pen tip is rotatably arranged at a first end of the pen holder, an inlet and outlet hole is arranged on the pen tip, and the inlet and outlet hole is eccentrically arranged on one side of the axis of the pen tip, and a rotation driving part is also arranged on the inner wall of the pen tip; a plurality of sliding grooves are arranged on the second end of the rod body, and the sliding buttons are slidably arranged in the corresponding sliding grooves; The pen core is inserted into the rod body and connected to the corresponding sliding button; The spring is located in the rod body and is configured to apply elastic force to the pen core or the sliding button; Wherein, the rotation driving part is configured to be abutted by the pen core to drive the pen tip to rotate on the pen shaft and guide the pen tip of the pen core to be inserted into the entry and exit hole, and the entry and exit hole is configured to allow the pen tip of the pen core to extend to the outside of the pen tip.

[0017] In one embodiment of the present application, the rotation driving part protrudes from the inner wall of the pen tip, 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.

[0018] In one embodiment of the present application, a support shaft is provided at the first end of the pen shaft, the axis of the support shaft is colinear with the rotation axis of the pen tip, and the pen tip is rotatably provided on the support shaft.

[0019] The technical solution of the present application has the following technical effects compared with the prior art: a first tube body and a second tube body are installed on a mounting seat, the first tube body is made of a hard tube to meet the installation requirements of the ball, and a second tube body made of an elastic tube is disposed outside the first tube body, and the first end of the second tube body is covered and protected by the first end of the first tube body exposed outside the mounting seat, so that the bowl mouth of the first tube body can be protected by the second tube body, and when the user falls during use, the first end of the first tube body can be protected by the external second tube body. The second tube body has a good buffering effect due to the use of an elastic tube, so as to improve the bowl mouth protection ability of the writing stationery, to ensure that the writing tool can write stably, thereby improving the reliability of use and the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of an embodiment of the pen refill of the present application; Figure 2 This is a schematic structural diagram of an embodiment of a double-layer structure pen tip of the present application; Figure 3 for Figure 2 One of the cross-sectional views of the double-layer structure nib; Figure 4 for Figure 3 A partial enlarged schematic diagram of the middle A area; Figure 5 for Figure 3 A schematic structural diagram of the first tube body; Figure 6 for Figure 3 A schematic diagram of the structure of the second tube body; Figure 7 for Figure 2 The second cross-sectional view of the double-layer structure nib; Figure 8 A schematic diagram of the structure of an embodiment of the writing stationery of this application; Fig. 9 for Figure 8 A cross-sectional view of a writing stationery; Fig.10 for Figure 8 Exploded view of writing stationery; Fig.11 for Figure 8 One of the structural diagrams of the first pole in the figure; Fig.12 for Figure 8 The second structural diagram of the first rod; Fig.13 for Figure 8 A cross-sectional view of the first rod; Fig.14 for Figure 8 A top view of the first pole in the middle; Fig.15 for Figure 8 The structural diagram of the second rod; Fig.16 for Figure 8 A schematic diagram of the structure of the middle connecting sleeve; Fig.17 for Figure 8 Schematic diagram of the structure of the middle pen head Fig.18 for Figure 8 A cross-sectional view of the middle pen tip; Fig.19 for Figure 8 Schematic diagram of the structure of the slide button.

[0021] Reference numerals: 100, pen holder; 200, refill; 210, pen tip; 300, spring; 210, core head; 211, mounting seat; 212, first tube body; 213, second tube body; 214, ball; 215, ink guide core; 2111, seat body; 2112, mounting head; 2121, bowl mouth; 2122, positioning part; 2131, buffer part; 2132, mounting protrusion; 220, ink tank; 1. Rod body; 11. First rod; 12. Second rod; 13. Connecting sleeve; 14. Support shaft; 15. Anti-slip head; 16. Through hole; 101. slide groove; 102. sliding support surface; 103. guide rib; 111. gripping portion; 112. limiting groove; 113. guiding portion; 121, plug-in portion; 122, limiting rib; 123, annular groove; 131. Positioning ribs; 2. pen tip; 21. inlet and outlet hole; 22. rotation drive unit; 23. sliding guide surface; 221. guide slope; 222. tip structure; 3. Slide button; 31. Guide groove. DETAILED DESCRIPTION

[0022] Embodiment 1, as Figure 1-Figure 7 As shown, an embodiment of the present application provides a pen core 200. The pen core 200 includes a core head 210 and an ink tank 220. The ink tank 220 stores ink to supply the core head 210 to meet the writing requirements. The core head 210 plays a role in writing ink onto paper during the writing process. When the writing tool is dropped by the user during use, the core head 210 will be damaged due to the impact. In order to improve the drop resistance of the core head 210 and improve its reliability, the core head 210 is improved as follows.

[0023] The core head 210 includes a ball seat assembly and a ball 214 . The ball 214 is mounted on the ball seat assembly, and the ball seat assembly is mounted on the ink tank 220 .

[0024] In which, the ball seat assembly includes a mounting seat 211, a first tube body 212 and a second tube body 213, and the mounting seat 211 is provided with mutually connected mounting sockets, the first tube body 212 is a hard tube, the second tube body 213 is an elastic tube, the first end of the first tube body 212 forms a bowl mouth 2121; the second tube body 213 is sleeved on the outside of the first tube body 212; the first end of the second tube body 213 wraps the first end of the first tube body 212 and surrounds the outside of the bowl mouth 2121, the second end of the first tube body 212 and the second end of the second tube body 213 are inserted into the mounting socket, the first end of the first tube body 212 and the first end of the second tube body 213 are located outside the mounting seat 211; the ball 214 is arranged in the bowl mouth 2121.

[0025] Specifically, the mounting seat 211 in the ball seat assembly is provided with a first tube body 212 and a second tube body 213. The first tube body 212 can be made of a hard tube (such as a metal tube) to meet the requirements of supporting and mounting the ball 214. The second tube body 213 is an elastic tube, and the second tube body 213 can wrap and protect the first end of the first tube body 212 located outside the mounting seat 211. The first end of the second tube body 213 is wrapped outside the first end of the first tube body 212, and the first end of the second tube body 213 surrounds the outside of the bowl mouth 2121 to provide buffer protection for the bowl mouth 2121 of the first tube body 212.

[0026] After the mounting seat 211 is connected to the ink tank 220 , the first tube body 212 will be connected to the ink tank 220 , so that the ink in the ink tank 220 can flow into the first tube body 212 , and the ink is printed on the paper through the rolling ball 214 .

[0027] When the writing tool falls from a height during the writing process, the first end of the second tube body 213 can provide buffering protection for the peripheral portion of the first end of the first tube body 212, thereby effectively protecting the ball 214 in the bowl mouth 2121, so as to increase the possibility of the ball 214 rolling smoothly in the bowl mouth 2121 after the fall, thereby improving the reliability of the writing tool.

[0028] At the same time, the second end of the second tube body 213 is also located in the mounting seat 211. When falling, the second tube body 213 can produce elastic deformation when in contact with the ground, thereby ensuring that both ends of the first tube body 212 can obtain effective buffering, reducing the deformation of the first tube body 212 and causing the inability to output ink smoothly, thereby improving the overall protection capability of the first tube body 212, and improving the overall reliability of the writing tool.

[0029] In one embodiment, a buffer portion 2131 is further provided on the inner tube wall of the second end portion of the second tube body 213; The end surface of the second end portion of the first tube body 212 abuts against the buffer portion 2131 .

[0030] Specifically, under normal circumstances, when a writing tool falls, it will fall in an inclined posture. In some cases, when the writing tool falls in a substantially vertical state, the ball 214 will be damaged by directly hitting the ground. For this reason, a buffer portion 2131 is formed in the inner tube wall of the second end of the second tube body 213, and the buffer portion 2131 supports the end face of the second end of the first tube body 212. In this way, when falling vertically, after the ball 214 contacts the ground, the first tube body 212 can compress the buffer portion 2131 and thus play a role in buffering the impact, thereby reducing the situation where the ball 214 cannot be written due to deformation.

[0031] The buffer portion 2131 is in an annular structure; or, the buffer portion 2131 includes a plurality of buffer sub-portions, and the plurality of buffer sub-portions are distributed around the center line of the second tube body 213 .

[0032] In another embodiment, the first end of the first tube body 212 is further provided with a plurality of positioning portions 2122, wherein the positioning portions 2122 form positioning grooves on the outer wall of the first tube body 212, and the positioning portions 2122 form positioning protrusions on the inner wall of the first tube body 212; The ball 214 also rests against the positioning protrusion.

[0033] Specifically, the ball 214 located in the bowl mouth 2121 can be further positioned and supported by the positioning portion 2122 inside the first tube body 212 .

[0034] Furthermore, the inner wall of the first end of the second tube body 213 is further provided with a mounting protrusion 2132 , and the mounting protrusion 2132 is located in the corresponding positioning groove.

[0035] Specifically, after the first tube body 212 is inserted into the second tube body 213 , the mounting protrusion 2132 will be located in the positioning groove to improve the connection reliability between the first tube body 212 and the second tube body 213 .

[0036] Furthermore, the mounting protrusion 2132 and the second tube body 213 are made of the same material and are also elastic. The mounting protrusion 2132 cooperates with the positioning groove to further play an elastic buffering role for the first tube body 212, so as to improve the impact resistance of falling.

[0037] In another embodiment, the mounting seat 211 includes a seat body 2111 and a mounting head 2112, the seat body 2111 is formed with an assembly socket, the mounting socket is formed in the mounting head 2112, and the mounting head 2112 is inserted into the assembly socket; the second end of the first tube body 212 and the second end of the second tube body 213 are inserted into the mounting socket in the mounting head 2112.

[0038] Specifically, in order to facilitate assembly, the mounting seat 211 can also adopt a split structure, that is, it includes a seat body 2111 and a mounting head 2112 that are inserted together. The mounting head 2112 can first be assembled with the first tube body 212 and the second tube body 213, and then the mounting head 2112 can be inserted into the assembly socket set on the seat body 2111.

[0039] In another embodiment, in order to ensure that the ink in the ink tank 220 flows smoothly into the first tube body 212, an ink guide groove is provided on the inner wall of the first tube body 212 to guide the flow of ink. Figure 7 As shown, the core body may also be provided with an ink introducing core 215, which is inserted into the first tube body 212. The ink introducing core 215 can guide the ink in the ink tank 220 to the ball 214. The installation method of the ink introducing core 215 can refer to the ink introducing structure configured in a conventional pen, and no limitation or redundant description is made here.

[0040] Embodiment 2, as Figure 8-Figure 19As shown, the present application provides a writing stationery, which generally includes a pen holder 100 and a plurality of pen cores 200. The pen holder 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 holder 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 holder 100. For the mutual locking and unlocking methods between the sliding buttons 3, reference can be made to the writing stationery in the conventional technology, and no limitation or redundant description is made here.

[0041] In view of the different problems existing in the existing writing stationery, the following structural designs and improvements are made in a targeted manner.

[0042] In one embodiment of the present application, for the writing stationery 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. For this reason, the following improvements are made to the writing stationery.

[0043] An embodiment of the present application provides a writing stationery, including: a pen holder 100 and a plurality of pen refills 200 .

[0044] 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. The pen core 200 is inserted into the rod body 1 and connected to the corresponding sliding button 3; Among them, the rotating drive part 22 is configured to be abutted by the pen core 200 to drive the pen tip 2 to rotate on the pen shaft 100 and guide the core head 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 allow the core head 210 of the pen core 200 to extend to the outside of the pen tip 2.

[0045] 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.

[0046] For example: taking the rotation axis of the pen tip 2 as a reference, multiple refills 200 will be arranged around the rotation axis of the pen tip 2, and the projection of the core head 210 of the refill 200 along the length direction of the 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.

[0047] When the sliding button 3 slides toward the pen tip 2, the pen core 200 will abut against the rotating drive unit 22 to drive the pen tip 2 to rotate, so that the entry and exit hole 21 rotates to be arranged relative to the pen core 200 so that the core head 210 of the pen core 200 can extend to the outside of the entry and exit hole 21.

[0048] Thus, during use, after the user presses the sliding button 3, the core head 210 of the pen core 200 will move toward the pen head 2. Since the pen head 2 is a conical structure, the mounting seat 211 of the core head 210 of the pen core 200 will slide along the inner wall of the pen head 2 and finally abut against the rotation driving part 22.

[0049] The core head 210 of the pen core 200 will apply pressure to the rotation driving part 22 to drive the pen head 2 to rotate on the pen shaft 100 through the rotation driving part 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 core head 210 will drive the rotation driving part 22 to rotate while the core head 210 will also be inserted into the inlet and outlet hole 21 along the rotation driving part 22.

[0050] Finally, after the core head 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.

[0051] 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.

[0052] The rotary drive part 22 needs to contact with the core head 210 to drive the pen head 2 to rotate. On the other hand, the rotary drive part 22 further guides the core head 210 to be inserted into the inlet and outlet hole 21 when cooperating with the core head 210 .

[0053] 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; 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 .

[0054] Specifically, the rotary drive part 22 is in a convex state on the inner wall of the pen tip 2, and the guide slope 221 formed on the side of the rotary drive part 22 can be abutted against the core head 210 of the pen core 200. The guide slope 221 is squeezed by the core head 210 of the pen core 200 sliding outward, so that the pen tip 2 is pressed by the rotary drive part 22 to make the pen tip 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 core head 210 to be accurately inserted into the inlet and outlet hole 21.

[0055] Preferably, the guide inclined surfaces 221 are respectively provided on both sides of the rotation driving portion 22 .

[0056] 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.

[0057] 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.

[0058] Specifically, a pointed structure 222 is formed on the rotary driving part 22 , and the pointed structure 222 can ensure that the core head 210 is distributed to the guide inclined surface 221 on one side after contacting the pointed structure 222 to ensure reliability in use.

[0059] 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.

[0060] 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 .

[0061] 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 .

[0062] 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 .

[0063] 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 .

[0064] 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.

[0065] 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.

[0066] 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 core head 210 extends out of the rod body 1, a through hole 16 matching the refill 200 is also provided on the end surface of the first end portion of the rod body 1. The core head 210 of the refill 200 extends into the pen head 2 via the through hole 16.

[0067] 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.

[0068] A rotatable pen tip 2 is provided at the end of the rod body 1, an inlet and outlet hole 21 is eccentrically provided on the pen tip 2, and a rotation driving part 22 is also provided on the inner wall of the pen tip 2. When the sliding button 3 slides toward the pen tip 2, the pen core 200 will abut against the rotation driving part 22 to drive the pen tip 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 core head 210 of the pen core 200 extends out of the inlet and outlet hole 21. Since the pen tip 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.

[0069] In another embodiment of the present application, for writing stationery, since multiple refills 200 are arranged inside, the overall peripheral size of the pen body 100 will increase. In order to reasonably design the peripheral size of the pen body 100, the peripheral size 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 writing stationery, the following structural improvements are made to the writing stationery.

[0070] An embodiment of the present application provides a writing stationery, including: a pen holder 100 and a plurality of pen refills 200 .

[0071] 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. The pen core 200 is located in the pen body 100 and connected to the corresponding sliding button 3 .

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] In one embodiment, the cross section of the inner wall of the first rod 11 is a non-circular structure.

[0077] 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 .

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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 .

[0084] 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 .

[0085] 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.

[0086] 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; 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.

[0087] 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.

[0088] 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.

[0089] In another embodiment of the present application, the spring 300 of the existing writing instrument 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.

[0090] An embodiment of the present application provides a writing stationery, including: a pen holder 100 and a plurality of pen refills 200 .

[0091] 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. The pen core 200 is inserted into the rod body 1 and connected to the corresponding sliding button 3; 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; 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 .

[0092] 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.

[0093] 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.

[0094] In one embodiment, the rod body 1 includes a first rod 11 and a second rod 12; 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; 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 .

[0095] 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.

[0096] 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; The guide portion 113 is configured to guide the spring 300 to be inserted into the corresponding slot 114 .

[0097] 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 .

[0098] 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.

[0099] 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 .

[0100] Specifically, the limiting rib 122 and the limiting groove 112 cooperate to more accurately connect the first rod 11 and the second rod 12 .

[0101] 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 .

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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 core head 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 efficiency of assembly. 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.

[0106] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A double-layer structure pen tip, characterized in that: include: A bead seat assembly, the bead seat assembly comprises a mounting seat, a first tube body and a second tube body, the mounting seat is provided with mutually connected mounting sockets, the first tube body is a hard tube, the second tube body is an elastic tube, the first end of the first tube body forms a bowl mouth; the second tube body is sleeved on the outside of the first tube body; the first end of the second tube body wraps the first end of the first tube body and surrounds the outside of the bowl mouth, the second end of the first tube body and the second end of the second tube body are inserted into the mounting socket, and the first end of the first tube body and the first end of the second tube body are located outside the mounting seat; A ball is arranged in the bowl mouth.

2. The double-layer structure pen tip according to claim 1, characterized in that: A buffer portion is also provided on the inner tube wall of the second end portion of the second tube body; An end surface of the second end portion of the first tube body abuts against the buffer portion.

3. The double-layer structure pen tip according to claim 2, characterized in that: The buffer portion is annular in structure; or, the buffer portion includes a plurality of buffer sub-portions, and the plurality of buffer sub-portions are distributed around the center line of the second tube body.

4. The double-layer structure pen tip according to claim 1, characterized in that: The first end of the first tube body is further provided with a plurality of positioning parts, wherein the positioning parts form positioning grooves on the outer wall of the first tube body, and the positioning parts form positioning protrusions on the inner wall of the first tube body; The ball also rests on the positioning protrusion.

5. The double-layer structure pen tip according to claim 4, characterized in that: The inner wall of the first end of the second tube body is further provided with a mounting protrusion, and the mounting protrusion is located in the corresponding positioning groove.

6. The double-layer structure pen tip according to claim 1, characterized in that: The mounting seat comprises a seat body and a mounting head, wherein an assembly socket is formed on the seat body, the mounting socket is formed in the mounting head, and the mounting head is inserted into the assembly socket; The second end of the first tube body and the second end of the second tube body are inserted into the mounting socket in the mounting head.

7. A writing stationery, characterized in that: include: pen; A pen core, the pen core comprising a core head and an ink tank, the core head adopts the double-layer structure pen head as claimed in any one of claims 1 to 6, and the core head is arranged on the ink tank; Wherein, the pen core is arranged in the pen holder.

8. The writing instrument according to claim 7, characterized in that: The writing stationery comprises a plurality of the refills and a plurality of springs; The pen holder comprises a rod body, a pen tip and a plurality of sliding buttons, wherein the pen tip is rotatably arranged at a first end of the pen holder, an inlet and outlet hole is arranged on the pen tip, and the inlet and outlet hole is eccentrically arranged on one side of the axis of the pen tip, and a rotation driving part is also arranged on the inner wall of the pen tip; a plurality of sliding grooves are arranged on the second end of the rod body, and the sliding buttons are slidably arranged in the corresponding sliding grooves; The pen core is inserted into the rod body and connected to the corresponding sliding button; The spring is located in the rod body and is configured to apply elastic force to the pen core or the sliding button; Wherein, the rotation driving part is configured to be abutted by the pen core to drive the pen tip to rotate on the pen shaft and guide the pen tip of the pen core to be inserted into the entry and exit hole, and the entry and exit hole is configured to allow the pen tip of the pen core to extend to the outside of the pen tip.

9. The writing instrument according to claim 8, 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.

10. The writing instrument according to claim 8, characterized in that: A support shaft is disposed at the first end of the pen shaft, the axis of the support shaft is colinear with the rotation axis of the pen tip, and the pen tip is rotatably disposed on the support shaft.

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