Pen with telescopic refill

Abstract

The pen comprises a pen holder, the refill and an elastic driving assembly, the pen holder is provided with an opening part, the refill is movably installed in the pen holder, and the elastic driving assembly is used for driving the refill to stretch out and draw back so that the writing end of the refill can stretch out of the opening part or retract into the pen holder; the pen further comprises a plurality of first accessories, the first accessories are detachably arranged on the pen refill in a sleeving mode so that the first accessories can be arranged and installed in different sorting modes, and different first accessories are different. The pen holder comprises a transparent part used for observing the first accessory, and the pen has the advantages that the pen can be disassembled, assembled and recombined into different styles according to user preferences, so that the interestingness of the pen is improved, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stationery, in particular to a pen with a retractable core. Background Art

[0002] Currently on the market, pens with retractable refills usually include push-to-retract ballpoint pens or gel pens. Such pens usually include a pen barrel, a refill and an elastic drive component, wherein the refill is movably installed in the pen barrel, and the elastic drive component is used to drive the refill to retract. When writing is needed, the refill is extended out of the pen barrel under the drive of the elastic drive component for writing. When writing is not needed, the refill is retracted into the pen barrel under the drive of the elastic drive component to avoid damage to the writing end of the refill or ink leakage.

[0003] The above-mentioned retractable refill pens usually have a single structure, and can only present one specific style after being assembled. Users cannot split and reassemble the pens into different styles according to their own preferences, which is less interesting.

[0004] Therefore, it is urgent for those skilled in the art to provide a pen with a retractable refill so that the pen can be disassembled and reassembled into different styles according to user preferences to improve the interest of the pen and increase the user experience. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defects in the prior art, thereby providing a pen with a retractable refill.

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

[0007] A retractable pen core pen comprises a pen barrel, a refill and an elastic drive assembly, wherein the pen barrel comprises an upper rod portion and an opening portion, the refill is movably installed in the pen barrel, and the elastic drive assembly is used to drive the refill to be retracted so that the writing end of the refill extends out of the opening portion or is retracted into the pen barrel; the pen also comprises a plurality of first accessories, which are detachably mounted on the refill so that a plurality of the first accessories can be arranged and installed in different arrangements, and there are differences between different first accessories; the upper rod portion and the opening portion are detachably connected, and the upper rod portion has a transparent area for observing the first accessories.

[0008] Preferably, when the pen core is extended and retracted along the axial direction of the pen shaft, two adjacent first accessories can collide with each other.

[0009] Preferably, the first accessory is configured as an injection-molded bead.

[0010] Preferably, a second accessory is further included; when the writing end of the pen core extends out of the opening, at least a partial outer wall surface of the second accessory abuts against a partial inner wall surface of the opening.

[0011] Preferably, the pen core includes an ink cartridge and an ink supply head; the ink supply head is inserted into one end of the ink cartridge and abuts against the ink cartridge to seal; the second accessory includes a first support ring and a second support ring, the first support ring is sleeved on the outside of the ink cartridge, and the second support ring is sleeved on the outside of the ink supply head; the first support ring and the second support ring are fixedly connected, and a support platform is formed on the inner wall surface of the connection position between the two, and the support platform is used to apply axial compression force to the connection position between the ink cartridge and the ink supply head.

[0012] Preferably, the elastic driving assembly comprises an elastic member; the elastic member is sleeved on the outer wall surface of the second accessory, one end of the elastic member abuts against the second accessory, and the other end abuts against the inner wall surface of the pen holder.

[0013] Preferably, the outer wall surface of the second accessory has a first connecting surface, and the first connecting surface extends radially along the pen body; the opening portion includes a plurality of ribs protruding from its inner wall surface, and the ribs have a second connecting surface, and the second connecting surface is arranged opposite to the first connecting surface; one end of the elastic member abuts against the first connecting surface, and the other end abuts against the second connecting surface.

[0014] Preferably, a plurality of the ribs are distributed in a circular array along the axial direction of the opening, and each of the ribs abuts against a local outer wall surface of the second accessory.

[0015] Preferably, the outer wall surface of the second accessory is provided with a plurality of recessed grooves, and the recessed grooves are located on a side close to the writing end of the pen core.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The above technical solution provides a pen with a retractable refill, which can be disassembled, assembled and reassembled as a whole through the detachable connection between the upper rod part and the opening part; and by detachably arranging a plurality of first accessories on the pen barrel, the first accessories can be arranged and installed on the pen barrel in different ways, and there are differences between different first accessories, so that users can disassemble and assemble the first accessories into different styles according to their own preferences. A transparent part for observing the first accessories is provided on the pen barrel, which is convenient for users to observe, thereby improving the fun and playability of the pen and further enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of one example of the utility model when the lower pen core is extended.

[0020] Figure 2 for Figure 1 Schematic cross-section diagram.

[0021] Figure 3 for Figure 2 A magnified schematic diagram of position A in the middle.

[0022] Figure 4 for Figure 1 Schematic diagram of the structure when the pen core is retracted.

[0023] Figure 5 for Figure 4 A magnified schematic diagram of position B in the middle.

[0024] Description of reference numerals:

[0025] 1. Pen body; 10. Upper rod; 100. Transparent area; 11. Opening; 111. Ribs; 1110. Second connecting surface; 2. Pen core; 21. Ink cartridge; 22. Ink supply head; 3. Elastic drive assembly; 31. Elastic member; 32. Drive mechanism; 321. Push rod; 322. Turntable; 4. First accessory; 5. Second accessory; 50. First connecting surface; 51. First support ring; 52. Second support ring; 53. Support platform; 54. Sink. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figures 1 to 5 The embodiment of the utility model provides a retractable pen core, comprising a pen barrel 1, a pen core 2 and an elastic drive assembly 3. The pen barrel 1 has an opening 11, and the pen core 2 is movably installed in the pen barrel 1. The elastic drive assembly 3 is used to drive the pen core 2 to extend and retract, so that the writing end of the pen core 2 extends out of the opening 11 or is retracted into the pen barrel 1. It can be known that when the user needs to use the pen to write, the elastic drive assembly 3 is used to drive the pen core 2 to extend out of the opening 11 along the axial direction of the pen barrel 1, so that the writing end of the pen core 2 extends out for the user to write; when the user does not need to write and needs to store the pen, the elastic drive assembly 3 is used to drive the pen core 2 to be retracted into the pen barrel 1 along the axial direction of the pen barrel 1 to avoid ink leakage during the storage process of the pen core 2. It is worth noting that the opening 11 is a part of the pen barrel 1, which has an opening for the pen core 2 to extend out. In this embodiment, the opening 11 is a part that is detachably connected to the upper rod 10 near the writing end. Of course, in other embodiments, the specific portion may be a portion of 5 to 15 mm on the writing end of the pen shaft 1 close to the pen core 2 .

[0030] The elastic driving component 3 can be set to a variety of structures, as long as it can drive the pen core 2 to extend and retract along the axial direction of the pen shaft 1.

[0031] In this embodiment, the elastic drive assembly 3 includes an elastic member 31 and a drive mechanism 32 located on the side of the pen body 1 away from the writing end. The drive mechanism 32 can directly adopt the drive structure of an existing cylindrical pen. For example, the drive mechanism 32 includes a push rod 321 and a turntable 322. When in use, the user applies an axial pressure toward the writing end (downward) to the push rod 321, and the push rod 321 slides toward the writing end and presses the turntable 322 to slide synchronously. When the turntable 322 is disengaged from the meshing portion on the pen body 1, a radial force is generated at the contact between the pointed feature on the push rod 321 and the inclined surface of the turntable 322. The turntable 322 is forced to rotate, and under the elastic restoring force (axial direction) of the elastic member 31, the upper end of the inclined surface of the turntable 322 is against the pointed feature of the push rod 321, and the pen core 2 is extended; when the push rod 321 is pressed again, the pointed feature at the head of the push rod 321 is separated from the inclined surface of the turntable 322, and the turntable 322 is rotated by the radial force, and the meshing part of the turntable 322 and the pen barrel 1 coincide with each other, and the pen core 2 is retracted, wherein the meshing pointed feature, the inclined surface, and the meshing position are not shown in the figure.

[0032] For the sake of fun and playability of the pen, in the present embodiment, the pen with retractable refill further comprises a plurality of first accessories 4, which are detachably mounted on the refill 2 so that the plurality of first accessories 4 can be arranged and installed in different arrangements, and there are differences between different first accessories 4; the upper rod portion 10 and the opening portion 11 are detachably connected, and the upper rod portion 10 has a transparent area 100 for observing the first accessories 4.

[0033] Specifically, the upper rod portion 10 and the opening portion 11 are detachably connected, so that the entire pen can be disassembled and reassembled, and a plurality of first accessories 4 can be detachably mounted on the pen body 1, so that the first accessories 4 can be arranged and installed on the pen body 1 in different ways, and there are differences between different first accessories 4, so that the user can disassemble and reassemble the first accessories 4 into different styles according to his or her own preferences. A transparent area 100 for observing the first accessories 4 is provided on the pen body 1, which is convenient for the user to observe, can improve the fun and playability of the pen, and further enhance the user experience.

[0034] It is worth noting that “differences between different first accessories 4” may be differences in color or shape of the first accessories 4. The first accessories 4 may be provided in a variety of structures, as long as they can present different combinations.

[0035] In order to further increase the fun, in this embodiment, when the refill 2 is axially extended and retracted along the pen body 1, two adjacent first accessories 4 can collide with each other. Specifically, when the first accessory 4 is sleeved on the refill 2, it can slide along the axial direction of the refill 2, and the elastic restoring force applied by the elastic drive component 3 has a certain mutation, and the coordination between the structures of the elastic drive component 3 will produce a certain collision, so that when the refill 2 is axially extended and retracted along the pen body 1, two adjacent first accessories 4 can collide with each other, and then multiple first accessories 4 can jump along the axial direction of the refill 2, making the use of the pen more interesting and increasing the user experience.

[0036] In order to further reduce the weight of the first accessory 4 and improve the user experience, in this embodiment, the first accessory 4 is set as an injection-molded bead. Specifically, several first accessories 4 can be set as beads of different colors, and users can automatically arrange and combine the beads of different colors according to their own preferences. Of course, different patterns can also be set on the first accessory 4, or the structure of the first accessory 4 itself can be shaped (such as set as a cartoon head, etc.), to increase the playability of the first accessory 4.

[0037] In the existing retractable refill pens, in order to facilitate writing by users, the opening 11 of the pen barrel 1 is usually set to a circular arc structure with a gradually decreasing diameter, and in order to prevent the writing end of the refill 2 from shaking during writing, the inner circle of the opening 11 usually abuts against the refill 2. On the one hand, when the user's hand applies force to the pen barrel 1, the applied force will be directly transmitted to the writing end of the refill 2 through the pen barrel 1, which is easy to cause the writing end of the refill 2 to deform or even break, thereby affecting the writing of the pen; on the other hand, this setting will cause the writing end of the refill 2 to be closer to the inner circle of the opening 11, and when the refill 2 slightly deviates from the axial direction, the ink is easy to stick to the opening 11.

[0038] In order to prevent the writing end of the refill 2 from being deformed or even broken, and to prevent the ink at the writing end of the refill 2 from getting on the opening 11, in the present embodiment, the retractable pen further comprises a second accessory 5; when the writing end of the refill 2 extends out of the opening 11, at least a partial outer wall surface of the second accessory 5 abuts against a partial inner wall surface of the opening 11. On the one hand, the second accessory 5 can be provided to increase the supporting effect on the writing end of the refill 2, thereby preventing the writing end of the refill 2 from being deformed or even broken; on the other hand, the second accessory 5 has a certain supporting strength and limiting distance, which can maintain the writing end of the refill 2 on the central axis of the opening 11, thereby preventing the ink from getting on the opening 11.

[0039] The second accessory 5 has a variety of structures, and can support the writing end of the pen core 2.

[0040] Since the pen core 2 includes an ink cartridge 21 and an ink supply head 22, and the ink supply head 22 is usually inserted into one end of the ink cartridge 21 and forms an extrusion seal with the ink cartridge 21. In order to further increase the sealing effect of the ink cartridge 21 and the ink supply head 22, in this embodiment, the second accessory 5 includes a first support ring 51 and a second support ring 52, the first support ring 51 is sleeved on the outside of the ink cartridge 21, and the second support ring 52 is sleeved on the outside of the ink supply head 22; the first support ring 51 and the second support ring 52 are fixedly connected, and a support platform 53 is formed on the inner wall surface of the connection position between the two, and the support platform 53 is used to apply an axial pressing force to the connection position of the ink cartridge 21 and the ink supply head 22, so that the ink cartridge 21 and the ink supply head 22 can be stably connected. Of course, in other embodiments, the second accessory 5 can also be set as a stepped structure with an axial notch.

[0041] Furthermore, in order to facilitate writing by the user, when the pen core 2 is extended, a part of the second support ring 52 extends out of the opening 11 , and a part of the second support ring 52 is located in the opening 11 .

[0042] Furthermore, in order to prevent the elastic member 31 from directly contacting the refill 2, and further prevent the radial deformation of the elastic member 31 itself from causing the refill 2 to be deformed by radial force, in this embodiment, the elastic member 31 is sleeved on the outer wall surface of the second accessory 5, and preferably the inner part of the elastic member 31 avoids contacting the outer wall surface of the second accessory 5, thereby increasing the radial anti-deformation capability of the elastic member 31. One end of the elastic member 31 contacts the second accessory 5, and the other end contacts the inner wall surface of the pen barrel 1, which can not only prevent the elastic member 31 from directly acting on the refill 2, but also further utilize the axial extrusion force generated by the elastic member 31 to promote the support platform 53 to apply axial pressing force to the connection position of the ink cartridge 21 and the ink supply head 22, thereby increasing the connection effect of the ink cartridge 21 and the ink supply head 22. It can be known that the elastic member 31 can be set as an elastic structure such as a spring or a spring sheet that can provide an axial elastic restoring force.

[0043] Furthermore, the outer wall surface of the second accessory 5 has a first connecting surface 50, and the first connecting surface 50 extends radially along the pen body 1; the opening portion 11 includes a plurality of ribs 111 protruding from its inner wall surface, and the ribs 111 have a second connecting surface 1110, and the second connecting surface 1110 is arranged opposite to the first connecting surface 50; one end of the elastic member 31 abuts against the first connecting surface 50, and the other end abuts against the second connecting surface 1110, so that the elastic member 31 is only subjected to axial force, thereby avoiding radial deformation of the elastic member 31.

[0044] In order to increase the abutment effect between the opening 11 and the second accessory 5 and make the force on the second accessory 5 more balanced to ensure that the writing end of the pen core 2 is located on the central axis of the opening 11, in this embodiment, a plurality of ribs 111 are distributed in a circular array along the axial direction of the opening 11, and each rib 111 abuts against a local outer wall surface of the second accessory 5.

[0045] Since the second accessory 5 will rotate to a certain extent during the extension and retraction of the refill 2, in order to reduce the contact area and thus reduce the running resistance, in this embodiment, the outer wall surface of the second accessory 5 is provided with a plurality of recesses 54, and the recesses 54 are located on the side close to the writing end of the refill 2. Specifically, the recesses 54 may be located in the area where the second accessory 5 abuts against the inner wall surface of the opening 11.

[0046] In order to facilitate the assembly of the pen as a whole, the upper rod portion 10 and the opening portion 11 of the pen holder 1 in this embodiment can be connected by threads. Of course, in other embodiments, it can also be set to a snap connection, a limit connection, a friction abutment, etc.

[0047] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A retractable pen core, comprising a pen holder (1), a pen core (2) and an elastic drive assembly (3), wherein the pen holder (1) comprises an upper rod portion (10) and an opening portion (11), the pen core (2) is movably mounted in the pen holder (1), and the elastic drive assembly (3) is used to drive the pen core (2) to retract so that the writing end of the pen core (2) extends out of the opening portion (11) or is retracted into the pen holder (1); It is characterized in that It also comprises a plurality of first accessories (4), wherein the first accessories (4) are detachably mounted on the pen core (2), so that the plurality of first accessories (4) can be arranged and installed in different arrangements, and there are differences between different first accessories (4); The upper rod portion (10) and the opening portion (11) are detachably connected, and the upper rod portion (10) is provided with a transparent area (100) for observing the first accessory (4).

2. A retractable pen according to claim 1, characterized in that: When the pen core (2) is extended and retracted axially along the pen shaft (1), two adjacent first accessories (4) can collide with each other.

3. A retractable pen according to claim 2, characterized in that: The first accessory (4) is configured as an injection-molded bead.

4. A retractable pen according to any one of claims 1 to 3, characterized in that: Also includes a second accessory (5); When the writing end of the pen core (2) extends out of the opening (11), at least a partial outer wall surface of the second accessory (5) abuts against a partial inner wall surface of the opening (11).

5. A retractable pen according to claim 4, characterized in that: The pen core (2) comprises an ink cartridge (21) and an ink supply head (22); The ink supply head (22) is inserted into one end of the ink cartridge (21) and abuts against and seals the ink cartridge (21); The second accessory (5) comprises a first supporting ring (51) and a second supporting ring (52), wherein the first supporting ring (51) is sleeved on the outside of the ink cartridge (21), and the second supporting ring (52) is sleeved on the outside of the ink supply head (22); The first support ring (51) and the second support ring (52) are fixedly connected, and a support platform (53) is formed on the inner wall surface of the connection position between the two, and the support platform (53) is used to apply axial pressing force to the connection position between the ink cartridge (21) and the ink supply head (22).

6. A retractable pen according to claim 4, characterized in that: The elastic drive assembly (3) comprises an elastic member (31); The elastic member (31) is sleeved on the outer wall surface of the second accessory (5); one end of the elastic member (31) abuts against the second accessory (5), and the other end abuts against the inner wall surface of the pen holder (1).

7. A retractable pen according to claim 6, characterized in that: The outer wall surface of the second accessory (5) has a first connecting surface (50), and the first connecting surface (50) extends in the radial direction of the pen holder (1); The opening portion (11) comprises a plurality of ribs (111) protruding from the inner wall surface thereof, the ribs (111) having a second connecting surface (1110), and the second connecting surface (1110) is arranged opposite to the first connecting surface (50); One end of the elastic member (31) abuts against the first connecting surface (50), and the other end abuts against the second connecting surface (1110).

8. A retractable pen according to claim 7, characterized in that: A plurality of the ribs (111) are distributed in a circular array along the axial direction of the opening portion (11), and each of the ribs (111) abuts against a local outer wall surface of the second accessory (5).

9. A retractable pen according to claim 4, characterized in that: The outer wall surface of the second accessory (5) is provided with a plurality of recessed grooves (54), and the recessed grooves (54) are located on a side close to the writing end of the pen core (2).

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