Pen with ink bag convenient to replace

Abstract

The pen comprises a fastening mechanism and a limiting mechanism, the fastening mechanism comprises a supporting ink bag, a circulation head, an external thread and a communicating cylinder, the circulation head is installed at the bottom end of the supporting ink bag, the external thread is installed on the outer side of the circulation head, and the limiting mechanism is installed on the supporting ink bag. The limiting mechanism comprises a protective shell, a limiting ring, a telescopic spring and a limiting disc, the limiting ring is installed on the lower half portion of the inner wall of the protective shell, one end of the telescopic spring is installed on the top of the inner wall of the protective shell, the limiting disc is installed at the lower end of the telescopic spring, and the supporting ink bag is located in the protective shell. The supporting ink bag is connected with the limiting ring in an inserted mode, and the upper end of the supporting ink bag is connected into the limiting disc in an inserted mode. And through combined use of the telescopic spring and the limiting ring, the middle part and the top end of the supporting ink bag can be limited and fastened at the same time, and the accuracy of the mounting position of the supporting ink bag is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of writing tools, in particular to a fountain pen with an ink bag that is easy to replace. Background Art

[0002] A fountain pen is a pen-like instrument that is supported by ink and is mainly used for writing.

[0003] The ink in the fountain pen is mainly supported by the ink sac, and the ink is adjusted by replacing the ink sac. The existing replacement method is to directly insert the ink sac into the limiter. However, when in use, there is a certain gap between the fountain pen shell and the ink sac, which makes it easy to be affected by shaking and even cause the ink sac to break, making it impossible to ensure the stability of its position during use. Summary of the Invention

[0004] The present invention addresses the problem that the ink bag is not protected by limiting the position in the prior art and proposes the following technical solutions:

[0005] A fountain pen that is convenient for replacing ink cartridges comprises a fastening mechanism and a limiting mechanism.

[0006] The fastening mechanism includes an ink bag support, a circulation head, an external thread, and a connecting tube. The circulation head is installed at the bottom end of the ink bag support, the external thread is installed on the outside of the circulation head, and the circulation head is screwed together with the connecting tube through the external thread.

[0007] The limiting mechanism includes a protective shell, a limiting ring, a telescopic spring, and a limiting plate. The limiting ring is installed on the lower half of the inner wall of the protective shell, one end of the telescopic spring is installed on the top of the inner wall of the protective shell, and the limiting plate is installed on the lower end of the telescopic spring.

[0008] The ink bag support is located inside the protective shell, the ink bag support is plugged into the limiting ring, and the upper end of the ink bag support is plugged into the limiting plate.

[0009] As a preferred embodiment of the above technical solution, the limiting mechanism further includes a distance limiting groove for limiting support, the distance limiting groove is opened on one side of the inner wall of the protective shell, and the limiting plate is slidably arranged inside the distance limiting groove.

[0010] As a preferred embodiment of the above technical solution, the inner diameter of the opening of the limiting disk is consistent with the inner diameter of the limiting ring.

[0011] As a preferred embodiment of the above technical solution, the limiting mechanism further includes a fastening head and a supporting head for rotational connection, the fastening head is installed at the lower end of the protective shell, and the protective shell is screwed together with the supporting head through the fastening head.

[0012] As a preferred embodiment of the above technical solution, the connecting tube is installed inside the supporting head, and the fastening head is inserted between the supporting head and the connecting tube.

[0013] As a preferred embodiment of the above technical solution, the interior of the supporting ink bag is connected to the interior of the communicating tube through the interior of the communicating head, and the communicating head is plugged into the interior of the communicating tube.

[0014] The beneficial effects of the utility model are:

[0015] (1) When the circulation tube and the connecting tube are plugged in and the external thread is connected to the threaded connection of the connecting tube, the position of the circulation head is fixed, and the ink bag support is installed and tightened at the same time. By using the combination of the telescopic spring and the limiting ring, the middle and top of the ink bag support can be simultaneously limited and tightened, thereby improving the accuracy of the installation angle of the ink bag support and the fixation of the surrounding side and the top of the ink bag support when in use, making the installation of the ink bag support convenient and stable;

[0016] (2) With the support of the external thread, the connection between the circulation head and the connecting tube is set to be rotationally tightened, which effectively prevents the internal ink from spilling when the ink bag is pulled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a perspective view of the upper half of the device;

[0018] Figure 2 What is shown is a three-dimensional diagram of the limiting method;

[0019] Figure 3 What is shown is a three-dimensional diagram of the limiting mechanism;

[0020] Figure 4 Shown is a top view of the plug-in connection.

[0021] In the figure: 1. ink sac support; 101. circulation head; 102. external thread; 103. support head; 104. connecting tube; 2. protective shell; 201. limiting ring; 202. telescopic spring; 203. limiting disk; 204. distance limiting groove; 205. fastening head. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0023] Example

[0024] Figures 1-4 What is shown is a schematic diagram of the overall structure of a specific embodiment of the utility model. Figures 1-4 A fountain pen that is convenient for replacing ink cartridges comprises a fastening mechanism and a limiting mechanism.

[0025] The fastening mechanism includes an ink bag support 1, a circulation head 101, an external thread 102, and a connecting tube 104. The circulation head 101 is installed at the bottom end of the ink bag support 1, and the external thread 102 is installed on the outside of the circulation head 101. The circulation head 101 is threadedly connected to the connecting tube 104 through the external thread 102.

[0026] The limiting mechanism includes a protective shell 2, a limiting ring 201, a telescopic spring 202, and a limiting plate 203. The limiting ring 201 is installed on the lower half of the inner wall of the protective shell 2, one end of the telescopic spring 202 is installed on the top of the inner wall of the protective shell 2, and the limiting plate 203 is installed on the lower end of the telescopic spring 202;

[0027] The ink bag 1 is supported and located inside the protective shell 2 , and the ink bag 1 is plugged into the limiting ring 201 , and the upper end of the ink bag 1 is plugged into the limiting plate 203 .

[0028] First, move the ink sac support 1 so that the circulation head 101 at its lower end is inserted into the connecting tube 104, then rotate the ink sac support 1, and fix the position of the circulation head 101 under the threaded connection between the external thread 102 and the connecting tube 104, and at the same time achieve the effect of fastening the installation of the ink sac support 1, then put the protective shell 2 on the outside of the ink sac support 1, so that the ink sac support 1 is simultaneously plugged into the limiting ring 201, and move the upper end of the ink sac support 1 to the inside of the limiting disk 203. While limiting and fastening the protective shell 2, squeeze and contract the telescopic spring 202, and then, under the elastic action of the telescopic spring 202, the limiting disk 203 and the force providing directional movement are further fixed to fix the position of the ink sac support 1, so that the ink sac support 1 is fastened to the connecting tube 104. The ink bag 1 can be accurately placed under the support, and the middle and top of the ink bag 1 can be limited and fastened at the same time when the protective shell 2 is installed normally, which improves the accuracy of the installation angle of the ink bag 1 and the fixation of the surrounding sides and the top of the ink bag 1 when in use, and facilitates the convenient and stable installation of the ink bag 1. Moreover, with the elastic support of the telescopic spring 202, the ink bag 1 without the external thread 102 and the ink bag 1 with inconsistent lengths can be limited and fixed at the same time, thereby improving the diverse selectivity of the device. At the same time, with the support of the external thread 102, the connection mode between the circulation head 101 and the connecting tube 104 is set to rotational fastening, which effectively prevents the internal ink from spilling when the ink bag 1 is pulled.

[0029] Figure 3 Shown is a schematic diagram of the three-dimensional structure of a limiting mechanism as a specific embodiment of the utility model. Figure 3 In the embodiment, the limiting mechanism further includes a distance limiting groove 204 for limiting support. The distance limiting groove 204 is opened on one side of the inner wall of the protective shell 2, and the limiting plate 203 is slidably arranged inside the distance limiting groove 204.

[0030] The inner diameter of the opening of the limiting plate 203 is consistent with the inner diameter of the limiting ring 201.

[0031] Under the limitation of the distance groove 204, the reliable and stable movement limit of the elastic fastening component is guaranteed. In terms of distance, when the telescopic spring 202 is subjected to pressure, it drives the limit plate 203 to contract synchronously, causing the limit plate 203 to slide inside the distance groove 204. Under the limitation of the specifications of the distance groove 204 itself, the movement of the limit plate 203 is restricted, thereby ensuring the safety of the telescopic spring 202 during its elastic operation. At the same time, when the squeeze on the limit plate 203 is released, the telescopic spring 202 drives the limit plate 203 to rebound inside the distance groove 204. At the same time, under the limitation of the distance groove 204, the position of the limit groove 204 is guaranteed to be stable when it is reset, thereby further ensuring the stability of the limit plate 203 and the telescopic spring 202 when performing limited support.

[0032] Figure 3 and Figure 4 Shown is a schematic diagram of a fastening connection structure as a specific embodiment of the utility model. Figure 3 and Figure 4 In the embodiment, the limiting mechanism further includes a fastening head 205 and a support head 103 for rotational connection. The fastening head 205 is installed at the lower end of the protective shell 2, and the protective shell 2 is screwed together with the support head 103 through the fastening head 205.

[0033] The connecting tube 104 is installed inside the supporting head 103 , and the fastening head 205 is inserted between the supporting head 103 and the connecting tube 104 .

[0034] Under the tight support of the support head 103, the use position of the protective shell 2 is guaranteed to be reliable and stable. For example, when the fastening head 205 is inserted into the support head 103, the protective shell 2 is rotated to fasten the fastening head 205 and the support head 103. At the same time, the use position of the protective shell 2 is fixed to ensure the accuracy of the position of its internal limiting components during operation. Moreover, under the tight support of the connecting tube 104, the relative accuracy of the position of the protective shell 2 and the supporting ink bag 1 during installation is guaranteed, thereby improving the overall installation effect of the device.

[0035] Figure 1 and Figure 4 Shown is a schematic diagram of the connection structure of a specific embodiment of the present utility model. Figure 1 and Figure 4 In the embodiment, the interior of the ink bag 1 is connected to the interior of the communicating tube 104 through the interior of the communicating head 101 , and the communicating head 101 is inserted into the interior of the communicating tube 104 .

[0036] Under the rotation and tightening of the connecting tube 104 and the circulation head 101, the interior of the supporting ink bag 1 is stably connected with the interior of the nib below, thereby ensuring smooth ink circulation during writing and improving the stability and efficiency of the device during normal use.

[0037] Working principle: First, move the ink sac support 1 so that the circulation head 101 at its lower end is plugged into the inside of the connecting tube 104. Then, rotate the ink sac support 1. Under the threaded connection between the external thread 102 and the connecting tube 104, the position of the circulation head 101 is fixed, and the ink sac support 1 is installed and tightened. Then, the protective shell 2 is sleeved on the outside of the ink sac support 1 so that the ink sac support 1 is plugged into the limiting ring 201 at the same time. Then, move the upper end of the ink sac support 1 into the inside of the limiting disk 203. While limiting and tightening the protective shell 2, the telescopic spring is tightened. The spring 202 is squeezed and contracted, and the elastic action of the telescopic spring 202 further fixes the position of the ink bag 1 by the limit plate 203 and the force of directional movement, so that the position of the ink bag 1 is accurately placed under the support of the circulation head 101. When the protective shell 2 is installed normally, the middle and top of the ink bag 1 can be limited and fastened at the same time, which improves the accuracy of the installation angle of the ink bag 1 and the fixation of the surrounding sides and the top of the ink bag 1 when it is used, making the installation of the ink bag 1 convenient and stable.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A fountain pen that facilitates ink cartridge replacement, comprising a fastening mechanism and a limiting mechanism, characterized in that: The fastening mechanism comprises an ink sac support (1), a circulation head (101), an external thread (102), and a connecting tube (104); the circulation head (101) is mounted on the bottom end of the ink sac support (1); the external thread (102) is mounted on the outside of the circulation head (101); and the circulation head (101) is threadedly connected to the connecting tube (104) via the external thread (102); The limiting mechanism comprises a protective shell (2), a limiting ring (201), a telescopic spring (202), and a limiting plate (203); the limiting ring (201) is mounted on the lower half of the inner wall of the protective shell (2); one end of the telescopic spring (202) is mounted on the top of the inner wall of the protective shell (2); and the limiting plate (203) is mounted on the lower end of the telescopic spring (202); The supporting ink bag (1) is located inside the protective shell (2), the supporting ink bag (1) is plugged into the limiting ring (201), and the upper end of the supporting ink bag (1) is plugged into the inside of the limiting plate (203).

2. The fountain pen with easy ink cartridge replacement according to claim 1, characterized in that: The limiting mechanism further comprises a distance limiting groove (204) for limiting support, the distance limiting groove (204) is opened on one side of the inner wall of the protective shell (2), and the limiting plate (203) is slidably arranged inside the distance limiting groove (204).

3. The fountain pen with easy ink cartridge replacement according to claim 1, characterized in that: The inner diameter of the opening of the limiting plate (203) is consistent with the inner diameter of the limiting ring (201).

4. The fountain pen with easy ink cartridge replacement according to claim 1, characterized in that: The limiting mechanism further comprises a fastening head (205) and a supporting head (103) for rotational connection, wherein the fastening head (205) is mounted on the lower end of the protective shell (2), and the protective shell (2) is threadedly connected to the supporting head (103) via the fastening head (205).

5. The fountain pen with easy ink cartridge replacement according to claim 4, characterized in that: The connecting tube (104) is installed inside the supporting head (103), and the fastening head (205) is inserted between the supporting head (103) and the connecting tube (104).

6. The fountain pen with easy ink cartridge replacement according to claim 1, characterized in that: The interior of the supporting ink bag (1) is communicated with the interior of the communicating tube (104) through the interior of the communicating head (101), and the communicating head (101) is plugged into the interior of the communicating tube (104).

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