A sealing structure for a modular fountain pen tip

Abstract

The utility model discloses a sealing structure of a modular fountain pen nib, comprising a pen holder, a pen cap, a fixing sleeve, and a sealing sleeve; the pen holder is provided with a nib module, and a user holds the pen holder and uses the nib to write; the pen cap is connected to the pen holder and covers the nib module when the fountain pen is not in use, the fixing sleeve is arranged on the pen cap, and the sealing sleeve is elastically connected to the fixing sleeve and is used to abut the pen holder when the pen holder and the pen cap are matched. When the pen cap is matched with the pen holder, the sealing sleeve contacts the pen holder and achieves a certain sealing effect, so that the overall sealing performance of the fountain pen is better, and the ink is prevented from overflowing and polluting the outside when the fountain pen is in an abnormal working condition to a greater extent, and the evaporation of the ink at the nib is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pen tip sealing, in particular to a modular pen tip sealing structure. Background Art

[0002] The pen tip is usually protected and sealed by a pen cap. Although the pen cap can effectively prevent the pen tip from touching the ground and being damaged when it falls, the sealing effect is often insufficient due to the limitations of the pen cap structure or process. In extreme usage scenarios, the ink or ink vapor in the pen cap leaks into the atmosphere, causing the pen tip to dry out and unable to be wetted or contaminated by the outside world. Traditional pen caps and related elastic seals have a short available sealing stroke and cannot provide lateral support for the seals, making it difficult to simultaneously ensure the sealing pressure and sealing accuracy for large-sized pen tips. At the same time, the seals in traditional pen caps are limited in their detachability and versatility, and the same seal is difficult to use in pen caps of different models.

[0003] Therefore, it is particularly important to propose a modular, highly sealed fountain pen nib sealing structure designed for large-size nibs. Utility Model Content

[0004] The utility model aims to solve the problem of ink and ink vapor leakage at the connection between the pen cap and the pen barrel of a large-size pen tip fountain pen in the prior art, and proposes a sealing structure for the nib of a modular fountain pen.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sealing structure for a modular fountain pen nib, the fountain pen comprising a pen holder, the pen holder being provided with a nib module, the sealing structure comprising:

[0007] A pen cap, configured to cover the pen tip module when connected to the pen barrel;

[0008] A fixed sleeve, configured on the pen cap;

[0009] A sealing sleeve, elastically connected to the fixing sleeve and used to abut against the pen holder when the pen holder and the pen cap are matched;

[0010] Wherein, an inner cavity is arranged in the fixing sleeve, and the sealing sleeve partially extends into the inner cavity.

[0011] Preferably, the sealing sleeve comprises a hollow and columnar sleeve, one end of which is sequentially provided with a sleeve rod and a protrusion, and the protrusion is arranged in the inner cavity to prevent the sealing sleeve from being separated from the fixing sleeve.

[0012] Preferably, the fixing sleeve comprises a cylindrical sleeve body, the inner cavity is arranged in the sleeve body, a threaded channel connected to the inner cavity is opened on one side of the sleeve body, the protrusion is movably connected in the inner cavity, and the protrusion cannot be separated from the fixing sleeve when subjected to axial tension of the pen cap.

[0013] Preferably, the sleeve rod passes through the threaded channel and is movably connected to the fixing sleeve.

[0014] Preferably, a spring is arranged between the sealing sleeve and the fixing sleeve, and the spring generates an elastic force on the fixing sleeve to make the protrusion move in the direction of the thread track.

[0015] Preferably, a step is provided on one side of the fixing sleeve, one end of the spring is connected to the step, and the other end of the spring is connected to the sealing sleeve.

[0016] Preferably, one end of the spring is fixedly connected to the fixing sleeve, and the other end of the spring is fixedly connected to the sealing sleeve.

[0017] Preferably, a water pump is arranged in the housing, and a threaded column is arranged at one end of the fixing sleeve, and the threaded column is threadably connected to the pen cap.

[0018] Preferably, the threaded channel is a tubular space provided with an internal thread, the protrusion is provided with an external thread matching the threaded channel, and the protrusion spirally enters the inner cavity through the threaded channel.

[0019] Preferably, the outer wall of the sealing sleeve is gap-matched with the inner wall of the pen cap.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] The utility model discloses a sealing structure of a modular fountain pen nib. When the pen cap is matched with the pen holder, the sealing sleeve contacts the pen holder and achieves a certain sealing effect, so that the overall sealing performance of the fountain pen is better, and the ink is prevented from overflowing and polluting the outside when the fountain pen is in an abnormal working condition to a greater extent, and the evaporation of the ink in the fountain pen nib is effectively reduced. In addition, the sealing structure adopts a modular assembly method, can be adapted to pen caps of different sizes and models, can be assembled in the pen cap of a large-size nib fountain pen for use, and has the functions of detachability and versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an exploded schematic diagram of a sealing structure of a modular fountain pen nib proposed by the utility model;

[0023] Figure 2 A schematic cross-sectional view of a sealing structure of a modular fountain pen tip proposed by the utility model;

[0024] Figure 3It is a three-dimensional schematic diagram of a fixed sleeve in a sealing structure of a modular fountain pen tip proposed by the utility model;

[0025] Figure 4 It is a cross-sectional schematic diagram of a fixed sleeve in a sealing structure of a modular fountain pen nib proposed by the utility model;

[0026] Figure 5 The utility model discloses a structural schematic diagram of a sealing sleeve in a sealing structure of a modular fountain pen nib.

[0027] In the figure: 1, pen barrel; 2, sealing sleeve; 21, sleeve; 22, sleeve rod; 23, bump; 3, spring; 4, fixing sleeve; 41, sleeve body; 42, threaded column; 43, inner cavity; 44, threaded channel; 45, step; 5, pen cap. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] Reference Figure 1-5 A sealing structure of a modular fountain pen nib comprises a pen holder 1, a pen cap 5, a fixing sleeve 4 and a sealing sleeve 2; the pen holder 1 is provided with a nib module, and a user holds the pen holder 1 and uses the nib to write; the pen cap 5 is connected to the pen holder 1 and covers the nib module when the fountain pen is not in use;

[0031] The fixing sleeve 4 is arranged on the pen cap 5, and the sealing sleeve 2 is elastically connected to the fixing sleeve 4, and is used to abut the pen body 1 when the pen body 1 and the pen cap 5 are matched, so that the pen cap 5 and the sealing sleeve 2 are both abutted against the pen body 1, and the three achieve two-point sealing effects to achieve a higher sealing performance of the fountain pen.

[0032] Reference Figure 2 , Attachment Figure 3 , Attachment Figure 4In this embodiment, the fixing sleeve 4 is provided with an inner cavity 43, and the sealing sleeve 2 partially extends into the inner cavity 43. The sealing sleeve 2 includes a hollow and columnar sleeve 21, and one end of the sleeve 21 is provided with a sleeve rod 22 and a protrusion 23 in sequence. The protrusion 23 is arranged inside the inner cavity 43 to prevent the sealing sleeve 2 from separating from the fixing sleeve 4. The above connection relationship enables the sealing sleeve 2 and the fixing sleeve 4 to maintain a certain connection relationship without bending and separating, and the two can also produce a certain relative movement. The amount of the relative movement is the amount of movement of the sealing sleeve 2 when the pen body 1 is matched with the pen cap 5.

[0033] Reference Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 The fixing sleeve 4 includes a cylindrical sleeve body 41, an inner cavity 43 is arranged in the sleeve body 41, a threaded channel 44 connected to the inner cavity 43 is opened on one side of the sleeve body 41, and the protrusion 23 is movably connected to the inner cavity 43, and the protrusion 23 cannot be separated from the fixing sleeve 4 when subjected to the axial tension of the pen cap 5. As shown in the figure, the fixing sleeve 4 is an integrated structure, and the protrusion 23 is assembled in the inner cavity 43 by means of a screw; refer to the attached Figure 4 The sleeve rod 22 passes through the threaded channel 44 and is movably connected to the fixed sleeve 4. The inner diameter of the inner cavity 43 is larger than the major diameter of the thread of the protrusion 23, and the outer diameter of the sleeve rod 22 is smaller than the minor diameter of the threaded channel 44, so that the protrusion 23 can move relatively freely in the inner cavity 43.

[0034] A spring 3 is arranged between the sealing sleeve 2 and the fixing sleeve 4 , and the spring 3 generates an elastic force on the fixing sleeve 4 to move the protrusion 23 toward the threaded channel 44 , so that the sealing sleeve 2 can maintain contact with the pen body 1 .

[0035] Furthermore, a step 45 is provided on one side of the fixing sleeve 4, one end of the spring 3 is connected to the step 45, and the other end of the spring 3 is connected to the sealing sleeve 2. The existence of the step 45 makes the installation of the spring 3 easier. At the same time, the fixed connection between the two ends of the spring 3 and the step 45 and the sealing sleeve 2 can prevent the sealing sleeve 2 from continuously rotating in the pen cap 5, that is, it can prevent the protrusion 23 from continuously rotating and being screwed out through the threaded channel 44 and detaching from the fixing sleeve 4.

[0036] In one embodiment of the present application, one end of the fixing sleeve 4 is provided with a threaded column 42, and the threaded column 42 is connected to the pen cap 5 by threads, so the assembly method is relatively simple. In other embodiments, the connection can also be carried out by other methods such as gluing, interference fit, etc.

[0037] As mentioned above, the threaded channel 44 in this embodiment is a tubular space with internal threads, and the protrusion 23 is provided with external threads matching the threaded channel, and the protrusion 23 spirally enters the inner cavity 43 through the threaded channel 44. In other embodiments, the threaded channel 44 may also be configured as a channel without threads, but in this case the fixing sleeve 4 should be composed of at least two parts. In this embodiment, the protrusion 23 should be placed in the inner cavity 43 before the fixing sleeve 4 is assembled.

[0038] In this embodiment, the outer wall of the sealing sleeve 2 and the inner wall of the pen cap 5 are clearance-matched. As mentioned above, when the pen is not in use, the pen body 1 is inserted into the pen cap 5, and the pen cap 5 and the sealing sleeve 2 are both in contact with the pen body 1; and in the process of the pen body 1 being inserted into the pen cap 5, the sealing sleeve 2 moves with the pen body 1 and compresses the spring 3, and the sealing sleeve 2 also moves relative to the pen cap 5 when moving with the pen body 1. The purpose of the above-mentioned clearance fit is to prevent the air pressure between the sealing sleeve 2 and the pen cap 5 from affecting the movement of the sealing sleeve 2, so that the movement of the sealing sleeve 2 is smoother, and the action of inserting the pen body 1 into the pen cap 5 is also smoother.

[0039] It is further explained that: Figure 1 As shown, in this embodiment, the pen body 1 and the pen cap 5 are not provided with mutually matching threads, that is, the pen body 1 and the pen cap 5 are plug-in connected; however, in other embodiments, the pen body 1 and the pen cap 5 can also be configured with threads; that is, regardless of whether the pen body 1 and the pen cap 5 are configured with threads, as long as other features meet the above description, they should be understood to fall within the protection scope of this application.

[0040] To sum up: the utility model discloses a modular sealing structure of the pen tip. When the pen cap 5 is matched with the pen body 1, the sealing sleeve 2 contacts the pen body 1 and achieves a certain sealing effect, so that the overall sealing performance of the pen is better, and the ink is prevented from overflowing and polluting the outside when the pen is in an abnormal working condition to a greater extent, and the evaporation of the ink in the pen tip is effectively reduced. In addition, the sealing structure adopts a modular assembly method, which can be adapted to pen caps 5 of different sizes and models, and can be assembled in the pen cap 5 of a large-size pen tip for use, and has the functions of detachability and versatility.

[0041] It is worth mentioning that: in order to effectively protect the external shape of the fountain pen, the pen cap 5 is usually made of hard materials such as iron and aluminum. During long-term use, it is difficult for the pen cap 5 to remain completely non-deformed, which leads to a deterioration in the sealing effect at the joint between the pen cap 5 and the pen body 1; however, in this embodiment, the connection between the sealing sleeve 2 and the pen body 1 can be configured as a flexible sealing material, which can effectively achieve sealing when abutting against the pen body 1 and still maintain a good sealing effect during long-term use.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sealing structure for a modular fountain pen nib, the fountain pen comprising a pen holder (1), the pen holder (1) being provided with a nib module, characterized in that: The sealing structure comprises: A pen cap (5) configured to cover the pen tip module when connected to the pen barrel (1); A fixing sleeve (4) configured on the pen cap (5); A sealing sleeve (2) elastically connected to the fixing sleeve (4) and used for abutting against the pen holder (1) when the pen holder (1) and the pen cap (5) are matched; The fixing sleeve (4) is provided with an inner cavity (43), and the sealing sleeve (2) partially extends into the inner cavity (43).

2. A sealing structure for a modular fountain pen tip according to claim 1, characterized in that: The sealing sleeve (2) comprises a hollow and columnar sleeve (21), one end of which is sequentially provided with a sleeve rod (22) and a protrusion (23), wherein the protrusion (23) is arranged in the inner cavity (43) to prevent the sealing sleeve (2) from being separated from the fixing sleeve (4).

3. The sealing structure of a modular fountain pen tip according to claim 2, characterized in that: The fixing sleeve (4) comprises a columnar sleeve body (41), the inner cavity (43) is arranged in the sleeve body (41), a threaded channel (44) communicating with the inner cavity (43) is provided on one side of the sleeve body (41), the convex block (23) is movably connected to the inner cavity (43), and the convex block (23) cannot be separated from the fixing sleeve (4) when subjected to an axial pulling force of the pen cap (5).

4. A sealing structure for a modular fountain pen tip according to claim 3, characterized in that: The sleeve rod (22) passes through the threaded channel (44) and is movably connected to the fixed sleeve (4).

5. The sealing structure of a modular fountain pen tip according to claim 4, characterized in that: A spring (3) is arranged between the sealing sleeve (2) and the fixing sleeve (4), and the spring (3) generates an elastic force on the fixing sleeve (4) to cause the protrusion (23) to move in the direction of the threaded channel (44).

6. A sealing structure for a modular fountain pen tip according to claim 5, characterized in that: A step (45) is provided on one side of the fixing sleeve (4), one end of the spring (3) is connected to the step (45), and the other end of the spring (3) is connected to the sealing sleeve (2).

7. The sealing structure of a modular fountain pen tip according to claim 5, characterized in that: One end of the spring (3) is fixedly connected to the fixing sleeve (4), and the other end of the spring (3) is fixedly connected to the sealing sleeve (2).

8. A sealing structure for a modular fountain pen tip according to any one of claims 1 to 7, characterized in that: One end of the fixing sleeve (4) is provided with a threaded column (42), and the threaded column (42) is threadedly connected to the pen cap (5).

9. The sealing structure of a modular fountain pen tip according to claim 3, characterized in that: The threaded channel (44) is a tubular space provided with an internal thread, the protrusion (23) is provided with an external thread matching the threaded channel, and the protrusion (23) spirally enters the inner cavity (43) through the threaded channel (44).

10. A sealing structure for a modular fountain pen tip according to any one of claims 1 to 7, characterized in that: The outer wall of the sealing sleeve (2) is clearance-matched with the inner wall of the pen cap (5).

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