Mark pen

Abstract

The utility model relates to a mark pen which comprises a pen holder, a refill connected to the front end of the pen holder, a pen mouth connected between the refill and the pen holder, an ink storage cavity formed in the middle of the pen holder, a leakage-proof assembly arranged on the rear portion of the pen holder, the leakage-proof assembly comprises a leakage-proof cavity communicated with the ink storage cavity, and a floating ball arranged in the leakage-proof cavity. The anti-leakage ink pen is simple and reasonable in structure, when ink in the ink storage cavity seeps towards the pen point or the pen mouth, air return pressure is formed in the ink storage cavity, the floating ball is adsorbed and moved towards the ink storage cavity, meanwhile, external air pressure enters the anti-leakage cavity through the air return hole and drives the floating ball to move to the position between the ink storage cavity and the anti-leakage cavity, and therefore the anti-leakage ink pen is convenient to use. Ink in the pen holder can be prevented from seeping from the pen point or the pen mouth by feeding air into the ink storage cavity and regulating pressure, so that ink leakage is effectively avoided.

Description

Technical Field

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

[0002] Marker pens are a commonly used stationery. Existing marker pens usually include a pen holder, a pen head and a pen mouth are arranged at the front end of the pen holder, the pen head passes through the pen mouth, and an ink bag or a refill with ink is installed in the pen holder. When a traditional marker pen is idle, the ink in the pen holder is easy to slowly seep out from the pen head or the pen mouth, resulting in ink leakage.

[0003] In order to solve the above-mentioned ink leakage problem, there is a prior art in which an inner bracket is connected to one end of the pen shaft close to the nib, a bushing is connected to the inner bracket, an ink outlet hole is arranged on the bushing, a valve body is slidably connected to the inner bracket, and a spring is connected between the valve body and the inner bracket; one end of the nib is connected to the valve body. Although this type of structure has the valve body supporting the ink outlet hole on the bushing under the action of the spring, so that the ink outlet hole is in a closed state and ink cannot flow out of the ink outlet hole, its structure is relatively complicated, which greatly increases the cost. Utility Model Content

[0004] The utility model aims to provide a marker pen, which has a floating ball correspondingly arranged at the rear end of the ink storage cavity of the pen body, and the floating ball is driven by air pressure to adjust the pressure of the ink storage cavity, thereby effectively avoiding ink leakage, and has the characteristics of simple and reasonable structure.

[0005] In order to solve the above technical problems, the utility model solves the problems through the following technical solutions: a marker pen, comprising a pen shaft, an ink tube is arranged in the pen shaft, a pen tip is connected to the front end of the ink tube, a pen head is arranged in the pen tip, a water reservoir connected to the pen tip is arranged in the front end of the ink tube, an air return groove is formed between the water reservoir and the ink tube, a float is arranged in the middle part of the ink tube, a pressure reducing valve is arranged in the rear part of the ink tube, and an air intake channel is formed between the rear end of the pen shaft and the ink tube.

[0006] Preferably, an ink storage chamber is formed in the middle of the ink tube, a leak-proof chamber communicating with the ink storage chamber is formed at the rear of the ink tube, a pressure regulating step is formed between the leak-proof chamber and the ink storage chamber, the float is arranged in the ink storage chamber, and the pressure reducing valve is arranged in the leak-proof chamber.

[0007] Further preferably, the pressure reducing valve comprises a cylinder, a pressure regulating ring is provided at one end of the cylinder corresponding to the ink storage chamber, a limiting ring groove is provided on the outer wall of the other end of the cylinder, a movable ring groove for facilitating the movement of the pressure regulating ring is provided on the inner wall of the leakage-proof chamber corresponding to the ink storage chamber, and a limiting convex ring used in conjunction with the limiting ring groove is formed on the end of the inner wall of the leakage-proof chamber corresponding to the air inlet channel.

[0008] Further preferably, the air inlet channel includes an external air inlet hole opened at the rear end of the pen shaft and an internal air inlet hole opened at the rear end of the ink tube, and an air inlet cavity is formed between the external air inlet hole and the internal air inlet hole.

[0009] Further preferably, an arc-shaped groove is provided on the outer edge of the inner end of the water reservoir, and the air return groove is formed between the arc-shaped groove and the inner wall of the ink tube.

[0010] Further preferably, a water outlet hole is provided in the middle of the water reservoir, and a water diversion head which cooperates with the pen tip is installed in the water outlet hole.

[0011] Further preferably, the ink storage cavity and the anti-leakage cavity are integrally formed, and the pressure regulating step and the pressure regulating ring are both conical.

[0012] The beneficial effects of the utility model include: comprising a pen barrel, an ink tube is arranged in the pen barrel, a nib is connected to the front end of the ink tube, a pen head is arranged in the nib, a water reservoir connected to the nib is arranged in the front end of the ink tube, an air return groove is formed between the water reservoir and the ink tube, a float is arranged in the middle part of the ink tube, a pressure reducing valve is arranged in the rear part of the ink tube, an air intake channel is formed between the rear end of the pen barrel and the ink tube. The utility model has a simple and reasonable structure. If the ink in the ink tube seeps out to the air return groove, air is taken in through the air intake channel, the pressure reducing valve is controlled to adjust the pressure in the ink tube, and the float adjusts the air intake pressure of the air return groove, thereby preventing the ink in the ink tube from seeping out from the air return groove, thereby effectively avoiding ink leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a cross-sectional view of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the water storage device of the utility model.

[0016] Figure 4 This utility model Figure 2 A partial enlarged view of . DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] like Figure 1-4As shown, a marker pen comprises a pen holder 1, an ink tube 2 is arranged in the pen holder 1, a pen nozzle 3 is connected to the front end of the ink tube 2, a pen head 4 is arranged in the pen nozzle 3, a water reservoir 5 connected to the pen nozzle 3 is arranged in the front end of the ink tube 2, an air return groove 6 is formed between the water reservoir 5 and the ink tube 2, specifically, an arc groove 51 is opened on the outer edge of the inner end of the water reservoir 5, the air return groove 6 is formed between the arc groove 51 and the inner wall of the ink tube 2, a float 7 is arranged in the middle part of the ink tube 2, a pressure reducing valve 8 is arranged in the rear part of the ink tube 2, and an air intake channel is formed between the rear end of the pen holder 1 and the ink tube 2. The utility model has a simple and reasonable structure. If the ink in the ink tube 2 seeps out to the air return groove 6, the air intake channel is inhaled, and the pressure reducing valve 8 is controlled to adjust the pressure in the ink tube 2, so that the float 7 adjusts the pressure of the air intake in the air return groove 6, so as to prevent the ink in the ink tube 2 from seeping out from the air return groove 6, thereby effectively avoiding ink leakage.

[0019] In this embodiment, an ink storage chamber 21 is formed in the middle of the ink tube 2, and a leak-proof chamber 22 communicating with the ink storage chamber 21 is formed in the rear stroke of the ink tube 2. A pressure regulating step 23 is formed between the leak-proof chamber 22 and the ink storage chamber 21. The ink storage chamber 21 and the leak-proof chamber 22 are integrally formed. The pressure regulating step 23 and the pressure regulating ring 82 are both conical. The float 7 is arranged in the ink storage chamber 21, and the pressure reducing valve 8 is arranged in the leak-proof chamber 22. The pressure reducing valve 8 includes a cylinder 81, and a pressure regulating ring 82 is arranged at one end of the cylinder 81 corresponding to the ink storage chamber 21, and a limiting ring groove 83 is arranged on the outer wall of the other end of the cylinder 81. The leak-proof chamber 22 A movable ring groove 84 is formed on one end of the inner wall corresponding to the ink storage chamber 21 to facilitate the movement of the pressure regulating ring 82. A limiting convex ring 85 is formed on one end of the inner wall of the anti-leakage chamber 22 corresponding to the air inlet channel to cooperate with the limiting ring groove 83. When air is taken in through the air inlet channel, the pressure regulating ring 82 moves along the movable ring groove 84 to reduce the intake pressure in the air inlet channel. When the pressure reducing valve 8 moves into place, the float 7 moves and adjusts in time in the ink storage chamber 21 to regulate the pressure of the return air groove 6 to prevent ink leakage. At this time, the pressure reducing valve 8 cooperates with the limiting ring groove 83 to limit the pressure of the limiting convex ring 85 to prevent the pressure reducing valve 8 from falling into the ink storage chamber 21.

[0020] In this embodiment, the air inlet channel includes an external air inlet hole 9 opened at the rear end of the pen shaft 1 and an internal air inlet hole 10 opened at the rear end of the ink tube 2. An air inlet cavity 11 is formed between the external air inlet hole 9 and the internal air inlet hole 10. The external air inlet hole 9 and the internal air inlet hole 10 are in a normally open state, which facilitates timely and effective control of the pressure reducing valve 8 and the float 7 to prevent ink leakage from the return air groove 6.

[0021] In this embodiment, a water outlet is provided in the middle of the water reservoir 5, and a water diversion head 12 connected to the pen tip 4 is installed in the water outlet hole. The water diversion head 12 facilitates the ink in the water reservoir 5 to be evenly and smoothly discharged to the pen tip 4.

[0022] According to the concept of the present invention, there may be changes in the specific implementation method and application scope, and the content of this specification should not be understood as limiting the present invention.

Claims

1. A marker pen, characterized in that: The invention comprises a pen shaft, an ink tube is arranged in the pen shaft, a nib is connected to the front end of the ink tube, a pen head is arranged in the nib, a water reservoir connected to the nib is arranged in the front end of the ink tube, an air return groove is formed between the water reservoir and the ink tube, a float is arranged in the middle of the ink tube, a pressure reducing valve is arranged in the rear of the ink tube, and an air inlet channel is formed between the rear end of the pen shaft and the ink tube.

2. A marker pen according to claim 1, characterized in that: An ink storage chamber is formed in the middle of the ink tube, a leak-proof chamber communicating with the ink storage chamber is formed at the rear of the ink tube, a pressure regulating step is formed between the leak-proof chamber and the ink storage chamber, the float is arranged in the ink storage chamber, and the pressure reducing valve is arranged in the leak-proof chamber.

3. A marker pen according to claim 2, characterized in that: The pressure reducing valve includes a cylinder, a pressure regulating ring is provided at one end of the cylinder corresponding to the ink storage chamber, a limiting ring groove is provided on the outer wall of the other end of the cylinder, a movable ring groove is provided on the end of the inner wall of the leakage-proof chamber corresponding to the ink storage chamber to facilitate the movement of the pressure regulating ring, and a limiting convex ring used in conjunction with the limiting ring groove is formed on the end of the inner wall of the leakage-proof chamber corresponding to the air inlet channel.

4. A marker pen according to claim 2, characterized in that: The air inlet channel comprises an external air inlet hole opened at the rear end of the pen shaft and an internal air inlet hole opened at the rear end of the ink tube, and an air inlet cavity is formed between the external air inlet hole and the internal air inlet hole.

5. A marker pen according to claim 1, characterized in that: An arc-shaped groove is provided on the outer edge of the inner end of the water storage container, and the air return groove is formed between the arc-shaped groove and the inner wall of the ink tube.

6. A marker pen according to claim 1, characterized in that: A water outlet hole is provided in the middle of the water storage container, and a water inlet head which is matched with the pen head is installed in the water outlet hole.

7. A marker pen according to claim 3, characterized in that: The ink storage cavity and the anti-leakage cavity are integrally formed, and the pressure regulating step and the pressure regulating ring are both conical.

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