A cap for a pen and a pen

Abstract

The utility model discloses a cap and pen, including cap main part, the cap main part is seted up with the protection groove intercommunication with the slot for the pen head of the pen core to insert to make the lateral wall of protection groove with the pen head of pen core have interval, prevent the steel ball of pen head of pen core contact cap main part. The utility model sets up the protection groove and does not contact the steel ball of pen head, can protect the steel ball, and the protection intensity of traditional wax cover is higher. The cap main part is at least partly transparent visible material. The pen includes the pen core, the pen head fixed in the pen core end, above -mentioned cap, the utility model discloses simple structure, not only can increase the protection effect to the steel ball of pen head, and can see whether the pen core is ink leakage through the cap.

Description

Technical Field

[0001] This utility model belongs to the field of stationery technology, specifically relating to a pen cap and a pen. Background Technology

[0002] Traditional pens have wax seals on the nib to protect the ball bearing. However, this method allows the wax to directly contact the ball bearing, blocking the ink flow. Additionally, the ball bearing is easily worn down during transportation, leading to ink leakage during normal use. Therefore, it is crucial to develop a pen cap and pen that protects the ball bearing. Utility Model Content

[0003] To solve at least one of the above-mentioned technical problems, the present invention provides a pen cap, including a pen cap body, wherein the pen cap body has a slot for inserting a pen tip into a pen refill, and the pen cap body also has a protective groove communicating with the slot so that the sidewall of the protective groove is spaced from the pen tip of the pen refill, so as to prevent the steel ball of the pen tip from contacting the pen cap body.

[0004] Through the above technical solution, the present invention sets a protective groove that does not contact the steel ball of the pen tip, thus protecting the steel ball and providing a higher level of protection compared to traditional wax sleeves.

[0005] The inner wall of the slot at least partially abuts against the outer wall of the pen tip of the refill.

[0006] At least a portion of the pen cap body on the periphery of the slot's opening forms a limiting part to cooperate with the pen refill and limit its movement, preventing the sidewall of the protective groove from contacting the steel ball. The protective groove is frustoconical in shape, with its diameter decreasing from the pen refill towards the direction away from it.

[0007] Preferably, at least part of the pen cap body is made of a transparent material.

[0008] With the above technical solution, if the assembly or processing of the pen refill and pen tip is substandard, the ink will flow out from the gap between the pen cap and the pen tip, or the leakage can be observed through the transparent material. Therefore, it can be directly known whether the pen refill is a good product.

[0009] This utility model also provides a pen, including a pen refill, a pen tip fixed to the end of the pen refill, and the aforementioned pen cap; the pen refill has a receiving cavity, the pen tip has a control cavity communicating with the receiving cavity, the pen tip is at least partially inserted into and fixed to the inner wall of the receiving cavity, the end of the pen tip has an outlet cavity communicating with the control cavity and having a limiting ring, the outlet cavity has a steel ball inside, the control cavity has an elastic element inside, the elastic element deforms to control the steel ball to block the outlet cavity or the limiting ring.

[0010] A control ball is installed between the elastic element and the limiting ring, and the control ball abuts against the outer wall of the steel ball. The pen refill includes a first pen refill and a second pen refill, which are integrally formed, and the outer diameter of the first pen refill is smaller than the outer diameter of the second pen refill.

[0011] The outer wall of the outer end of the first pen refill has a constricted bevel.

[0012] The maximum outer diameter of the pen cap body is less than or equal to the maximum outer diameter of the first pen refill.

[0013] The pen refill also includes a third pen refill, which also has a receiving cavity. The outer wall of the second pen refill is integrally formed with a limiting outer ring. The second pen refill is at least partially inserted into the inner wall of the third pen refill. The two can be interference fit and limited by the limiting outer ring.

[0014] It also includes a shell. The pen of this invention is placed inside the shell. The pen has an opening and an inlet. The pen tip can be extended and retracted to connect with the shell so that the pen tip can extend and retract. The size of the opening and anlet is larger than the maximum outer diameter of the pen cap body so that the pen cap body can retract into the shell along with the pen tip, which can better protect the pen tip.

[0015] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, which not only increases the protection of the steel ball in the pen tip, but also allows the pen cap to indicate whether the pen refill is leaking ink. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of the pen cap, pen refill, and pen tip assembly of this utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the present invention with the outer shell retracted.

[0018] Figure 3 This is a cross-sectional schematic diagram of the present invention used in conjunction with the extended outer shell;

[0019] Figure label:

[0020] 1. Pen cap body; 101. Slot; 102. Protective groove; 103. Limiting part;

[0021] 2. Pen refill; 201. Receiving cavity; 202. First pen refill; 203. Second pen refill; 204. Shrinking bevel; 205. Third pen refill; 206. Limiting outer ring;

[0022] 3. Pen tip; 301. Control cavity; 302. Outlet cavity; 303. Limiting ring; 304. Steel ball; 305. Elastic element; 306. Control ball;

[0023] 4. Outer shell; 401. Entrance / Exit. Detailed Implementation

[0024] To enable those skilled in the art to better understand this utility model and to more clearly define the scope of protection claimed by this utility model, the present utility model is described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present utility model concept, and are only a part of the embodiments of this utility model. The specific and direct description of related structures is only for the convenience of understanding this utility model, and the specific features do not necessarily or directly limit the scope of implementation of this utility model.

[0025] Referring to the accompanying drawings, the present invention adopts the following technical solution: a pen cap, comprising a pen cap body 1, wherein the pen cap body 1 has a slot 101 for inserting the pen tip 3 of the pen refill 2, and the pen cap body 1 also has a protective groove 102 communicating with the slot 101 so that the side wall of the protective groove 102 is spaced from the pen tip 3 of the pen refill 2, so as to prevent the steel ball 304 of the pen tip 3 of the pen refill 2 from contacting the pen cap body 1.

[0026] Through the above technical solution, the present invention sets the protective groove 102 to not contact the steel ball 304 of the pen tip 3, which can protect the steel ball 304 and provides a higher level of protection than the traditional wax sleeve.

[0027] The inner wall of the slot 101 at least partially abuts against the outer wall of the pen tip 3 of the pen refill 2.

[0028] At least a limiting portion 103 is formed on one side of the pen cap body 1 around the opening of the slot 101 to cooperate with the pen refill 2 to limit its movement and prevent the side wall of the protective groove 102 from contacting the steel ball 304. The protective groove 102 is frustoconical in shape, and its diameter decreases from the pen refill 2 away from the pen refill 2.

[0029] Preferably, at least part of the pen cap body 1 is made of a transparent material.

[0030] With the above technical solution, if the assembly or processing of the pen refill 2 and the pen tip 3 is substandard, the ink will flow out from the gap between the pen cap and the pen tip 3, or the leakage can be observed through the transparent visible material. Therefore, it can be directly known whether the pen refill 2 is a good product.

[0031] The pen cap body 1 can be made of PP material.

[0032] This utility model also provides a pen, including a pen core 2, a pen tip 3 fixed to the end of the pen core 2, and the aforementioned pen cap; the pen core 2 has a receiving cavity 201, the pen tip 3 has a control cavity 301 communicating with the receiving cavity 201, the pen tip 3 is at least partially inserted and fixed to the inner wall of the receiving cavity 201, the end of the pen tip 3 has an outlet cavity 302 communicating with the control cavity 301 and having a limiting ring 303, the outlet cavity 302 has a steel ball 304 inside, the control cavity 301 has an elastic element 305 inside, the elastic element 305 deforms to control the steel ball 304 to block the outlet of the outlet cavity 302 or the limiting ring 303.

[0033] A control ball 306 is installed between the elastic element 305 and the limiting ring 303, and the control ball 306 abuts against the outer wall of the steel ball 304. The pen refill 2 includes a first pen refill 202 and a second pen refill 203, which are integrally formed, and the outer diameter of the first pen refill 202 is smaller than the outer diameter of the second pen refill 203.

[0034] The outer wall of the outer end of the first pen refill 202 is provided with a constricted bevel surface 204.

[0035] The maximum outer diameter of the pen cap body 1 is less than or equal to the maximum outer diameter of the first pen refill 202.

[0036] The pen refill 2 also includes a third pen refill 205, which also has a receiving cavity 201. The outer wall of the second pen refill 203 is integrally formed with a limiting outer ring 206. The second pen refill 203 is at least partially inserted into the inner wall of the third pen refill 205. The two can be interference fit and are limited by the limiting outer ring 206.

[0037] It also includes a housing 4. The pen of this invention is placed inside the housing 4. The pen has an inlet and outlet 401. The pen tip 3 is retractably connected to the housing 4 so that the pen tip 3 can extend and retract. The size of the inlet and outlet 401 is larger than the maximum outer diameter of the pen cap body 1 so that the pen cap body 1 can retract into the housing 4 along with the pen tip 3, which can better protect the pen tip 3.

[0038] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, which not only increases the protection of the steel ball 304 of the pen tip 3, but also allows the pen cap to indicate whether the pen refill 2 is leaking ink.

[0039] The elastic element 305 is a spring, one end of which is welded or plugged into the inner wall of the pen tip 3, and the other end can be a reduced-diameter spring that abuts against the control ball 306.

[0040] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A pen cap, characterized in that: The pen cap body (1) includes a slot (101) for inserting the pen tip (3) of the pen refill (2). The pen cap body (1) also has a protective groove (102) communicating with the slot (101) so that the side wall of the protective groove (102) is spaced from the pen tip (3) of the pen refill (2) to prevent the steel ball (304) of the pen tip (3) of the pen refill (2) from contacting the pen cap body (1).

2. The pen cap according to claim 1, characterized in that: The inner wall of the slot (101) at least partially abuts against the outer wall of the pen tip (3) of the pen refill (2).

3. The pen cap according to claim 1, characterized in that: At least a limiting part (103) is formed on one side of the pen cap body (1) around the opening of the slot (101) to cooperate with the pen refill (2) to limit the movement and prevent the side wall of the protective groove (102) from contacting the steel ball (304).

4. The pen cap according to claim 1, characterized in that: The protective groove (102) is frustum-shaped, and its diameter decreases from the pen refill (2) toward the direction away from the pen refill (2).

5. The pen cap according to claim 1, characterized in that: The pen cap body (1) is at least partially made of a transparent material.

6. A pen, characterized in that: The pen includes a pen refill (2), a pen tip (3) fixed to the end of the pen refill (2), and a pen cap as described in any one of claims 1-5; the pen refill (2) has a receiving cavity (201), the pen tip (3) has a control cavity (301) communicating with the receiving cavity (201), the pen tip (3) is at least partially inserted and fixed to the inner wall of the receiving cavity (201), the end of the pen tip (3) has an outlet cavity (302) communicating with the control cavity (301) and having a limiting ring (303), the outlet cavity (302) has a steel ball (304) built in it, the control cavity (301) has an elastic element (305) built in it, and the elastic element (305) deforms to control the steel ball (304) to block the outlet of the outlet cavity (302) or the limiting ring (303).

7. The pen according to claim 6, characterized in that: A control ball (306) is installed between the elastic element (305) and the limiting ring (303), and the control ball (306) abuts against the outer wall of the steel ball (304).

8. The pen according to claim 6, characterized in that: The pen refill (2) includes a first pen refill (202) and a second pen refill (203), the first pen refill (202) and the second pen refill (203) are integrally formed and the outer diameter of the first pen refill (202) is smaller than the outer diameter of the second pen refill (203).

9. The pen according to claim 8, characterized in that: The outer wall of the outer end of the first pen refill (202) is provided with a constricted bevel (204).

10. The pen according to claim 8, characterized in that: The maximum outer diameter of the pen cap body (1) is less than or equal to the maximum outer diameter of the first pen refill (202).

Images