Rotatable writing pen

1 . A rotatable writing pen, comprising:

a pen main body;

a supporting structure, wherein the supporting structure is configured for supporting the pen main body, and the pen main body is capable of rotating on the supporting structure;

wherein a first groove is defined in the pen main body, and the first groove is defined adjacent to a center of gravity of the pen main body; a first end of the supporting structure is positioned in the first groove;

wherein an inner side wall of the first groove is a cylindrical side wall, and an inclined surface is arranged around a periphery of an opening of the first groove.

2 . The rotatable writing pen according to claim 1 , wherein the supporting structure comprises a supporting base and a supporting portion, the supporting portion is connected to the supporting base, and the supporting portion is arranged on the supporting base; a top end of the supporting portion is received within the first groove and is configured for abutting against an inner top wall of the first groove.

3 . The rotatable writing pen according to claim 2 , wherein the supporting base is provided with an arc-shaped outer surface, and a diameter of the supporting base gradually decreases from top to bottom; a bottom portion of the supporting base is provided with a flat supporting surface; a mounting groove is defined in the bottom portion of the supporting base, the mounting groove is configured for mounting a first anti-slip pad, and the supporting surface is arranged around the mounting groove; the supporting structure is further provided with a counterweight groove configured for placing a counterweight member, the counterweight groove is provided with an accommodating opening, and the mounting groove is arranged around an edge of the accommodating opening; the first anti-slip pad is configured for covering the counterweight groove and the mounting groove; the first anti-slip pad is a flexible anti-slip pad.

4 . The rotatable writing pen according to claim 2 , wherein the top end of the supporting portion is provided with a first protruding arc-shaped contact surface; the inner top wall of the first groove is provided with a second recessed arc-shaped contact surface, and the second arc-shaped contact surface is configured for abutting against the first arc-shaped contact surface.

5 . The rotatable writing pen according to claim 4 , wherein a first end of the pen main body is located below the first arc-shaped contact surface, and a second end of the pen main body is located above the first arc-shaped contact surface, so that the pen main body is placed obliquely on the supporting structure.

6 . The rotatable writing pen according to claim 2 , wherein the supporting portion comprises a transition portion and a first supporting member, the first supporting member is connected to the transition portion, the transition portion is provided with an arc-shaped outer surface, and a diameter of the transition portion gradually decreases from bottom to top; the first supporting member is a cylindrical supporting member.

7 . The rotatable writing pen according to claim 1 , wherein a first gap is provided between the supporting structure and the first groove; a second gap is provided between the supporting structure and an outer edge of the inclined surface, and the second gap is larger than the first gap; a width of the first gap is in a range from 0.1 mm to 3 mm.

8 . The rotatable writing pen according to claim 1 , wherein the inclined surface comprises a front side section, a rear side section, a left side section, and a right side section, the left side section and the right side section are connected to the front side section and the rear side section, second gaps are formed between the supporting structure and the front side section as well as between the supporting structure and the rear side section, third gaps are formed between the supporting structure and the left side section as well as between the supporting structure and the right side section, and the third gaps are different from the second gaps.

9 . The rotatable writing pen according to claim 1 , wherein the pen main body comprises a gripping portion, the gripping portion comprises a front gripping portion and a rear gripping portion, the front gripping portion is connected to the rear gripping portion, the front gripping portion is provided with a first protruding arc-shaped gripping surface, and the rear gripping portion is provided with a second recessed arc-shaped gripping surface.

10 . The rotatable writing pen according to claim 9 , wherein the pen main body further comprises a tip sleeve and a first refill, a first cavity is defined in the pen main body, a first end of the first cavity is provided with a first opening, a first end of the first refill is arranged in the first cavity, and a second end of the first refill passes through the first opening and is located at an exterior of the first cavity; the tip sleeve is sleeved on the first refill and is connected to the front gripping portion.

11 . The rotatable writing pen according to claim 9 , wherein an end portion of the rear gripping portion is provided with an arc-shaped protective end face, and the first groove is defined in the front gripping portion.

12 . The rotatable writing pen according to claim 9 , wherein a diameter of the front gripping portion first gradually increases and then gradually decreases along a lengthwise direction, to form the first protruding arc-shaped gripping surface; a diameter of the rear gripping portion first gradually decreases and then gradually increases along a lengthwise direction, to form the second recessed arc-shaped gripping surface.

13 . The rotatable writing pen according to claim 1 , wherein a height of the supporting structure is greater than a width of the supporting structure.

14 . A rotatable writing pen, comprising:

a pen main body;

a supporting structure, wherein the supporting structure is configured for supporting the pen main body, and the pen main body is capable of rotating on the supporting structure;

wherein the pen main body comprises a first rotating portion and a second rotating portion, and the first rotating portion is threadedly connected to the second rotating portion;

wherein the pen main body further comprises a first magnetic attraction member, the first magnetic attraction member is sleeved on a junction between the first rotating portion and the second rotating portion, and the first magnetic attraction member is configured for protruding from outer surfaces of the first rotating portion and the second rotating portion; the supporting structure is magnetically attracted to the first magnetic attraction member, the first magnetic attraction member is a first annular magnetic attraction member, and the first magnetic attraction member is provided with an arc-shaped magnetic outer surface; the first magnetic attraction member is arranged at a middle portion of the pen main body.

15 . The rotatable writing pen according to claim 14 , wherein the writing pen further comprises a second refill, a third cavity is defined in the first rotating portion, a fourth cavity is defined in the second rotating portion, and the third cavity is in communication with the fourth cavity; a first end of the second refill is positioned in the fourth cavity, and a second end of the second refill passes through the third cavity and is located at an exterior of the first rotating portion.

16 . The rotatable writing pen according to claim 14 , wherein the supporting structure comprises a second supporting base, a fifth cavity is defined in the second supporting base, a second magnetic attraction member is arranged in the fifth cavity, and the second magnetic attraction member is magnetically attracted to the first magnetic attraction member.

17 . The rotatable writing pen according to claim 16 , wherein a second anti-slip pad is arranged at a bottom portion of the second supporting base, and a height of the second supporting base is greater than a width of the second supporting base.