Magnetic stable unscrewing writing brush

Abstract

The utility model belongs to the technical field of painting and calligraphy tools, particularly relates to a magnetic stable unscrewing writing brush, and aims to solve the problems that penholders and nibs of some writing brushes in the existing market can be separated, most of the writing brushes are connected in a turnbuckle screwing manner, the nibs and the penholders need to be screwed for many circles during mounting and dismounting, and the operation is tedious. The magnetic pen comprises a pen point and a pen holder, an outer cylinder magnetic attraction structural part is fixedly arranged at the end, away from pen hairs, of the pen point and comprises an outer cylinder magnet, and an inner cylinder magnetic attraction structural part is fixedly arranged at the end, facing the pen point, of the pen holder. According to the magnetic-attraction unscrewing writing brush, the problems of axial falling, radial dislocation, annular rotation and shaking of the pen point of a detachable writing brush are perfectly solved, the pen point and the pen holder are very simple and rapid to combine and disassemble, and normal use and good use experience of the magnetic-attraction unscrewing writing brush are guaranteed; and the separated pen points can be put into the pen point moisturizing box for storage and moisturizing, so that the pen holder is more convenient to carry.

Description

Technical Field

[0001] This application relates to the field of calligraphy and painting tools, and in particular to a magnetically stabilized rotating brush. Background Technology

[0002] As the core tool for calligraphy creation, the storage and maintenance of the brush should be taken seriously. Traditional brushes are relatively long, making them even more inconvenient to carry after the brush tip is dipped in ink, and there is a lack of a dedicated storage system to ensure the safety and moisture retention of the brush tip. The moisturizing and maintenance of the brush tip is particularly crucial for brushes used frequently. If the brush bristles are not washed for several hours, they will dry and harden; frequent washing will cause unnecessary damage to the brush tip. Therefore, it is essential to temporarily moisturize the brush tip when pausing during writing. In certain situations, such as when traveling or when students are attending calligraphy classes, it is sometimes necessary to avoid washing the brush tip too frequently. When convenient, it's necessary to store the ink-laden brush in a moisturizing box to keep it moisturized before taking it home to wash. Currently, most products on the market are designed for storing, carrying, and moisturizing the entire brush, but the boxes are large and bulky, the moisturizing effect is not good, the leakage problem is not completely solved, and they are not portable. In summary, separating the brush into the brush head and the brush handle, storing the brush head in a compact moisturizing box and the brush handle in a regular pencil case, can better solve the problems of moisturizing and carrying. Therefore, whether considering moisturizing or portability, there is a need to separate the brush head from the brush handle.

[0003] Another important reason why we want the pen tip and pen barrel to be detachable is that the pen barrel is a durable product that can be used for a long time, while the pen tip is a consumable product that is worn out and discarded every few weeks. Separating the pen barrel and pen tip makes it easy to replace worn-out pen tips, and using the pen barrel for a long time is more economical and environmentally friendly.

[0004] Currently, some calligraphy brushes on the market have detachable handles and tips, which are mostly connected by screws. When installing and disassembling them, the brush tip and handle need to be screwed on many times, making the operation cumbersome. Utility Model Content

[0005] The purpose of this invention is to solve the problem that in the existing technology, the pen handle and pen head are connected by screws, which requires screwing the pen head and pen handle many times during installation and disassembly, making the operation cumbersome. Therefore, this invention proposes a magnetically stabilized pen that can be unscrewed.

[0006] The magnetically stabilized rotating brush provided in this application adopts the following technical solution:

[0007] A magnetically stabilized, screw-on calligraphy brush, comprising:

[0008] The pen tip and pen barrel are provided. The pen tip is fixedly provided with an outer cylinder magnetic attraction structure, which includes an outer cylinder magnet, away from the tip. The pen barrel is fixedly provided with an inner cylinder magnetic attraction structure, which includes an inner cylinder magnet, at the end facing the pen tip. Both the outer cylinder magnet and the inner cylinder magnet are provided with multiple magnetic poles.

[0009] Furthermore, the outer cylinder magnetic structure includes a front section of the outer cylinder, a rear section of the outer cylinder fixedly connected to one side of the front section of the outer cylinder, and the rear section of the outer cylinder is disposed inside the pen head away from the tip of the brush and fixedly connected to the pen head; or the rear section of the outer cylinder and the front section of the outer cylinder are both disposed inside the pen head away from the tip of the brush and fixedly connected to the pen head; the outer cylinder magnet is located inside the rear section of the outer cylinder.

[0010] Furthermore, the inner cylinder magnetic structure includes a front section of the inner cylinder, a rear section of the inner cylinder is fixedly connected to one side of the front section of the inner cylinder, the rear section of the inner cylinder is disposed inside the pen barrel facing the pen tip and is fixedly connected to the pen barrel; the inner cylinder magnet is located inside the front section of the inner cylinder.

[0011] Furthermore, the front section of the outer cylinder is a rotating body, and the front section of the inner cylinder is a rotating body or a regular polyhedron.

[0012] Furthermore, the front section of the outer cylinder includes an outer cylinder rim, an outer cylinder middle section, and an outer cylinder conical section, and the rear section of the outer cylinder is sequentially fixedly connected to the outer cylinder conical section, the outer cylinder middle section, and the outer cylinder rim from the pen tip toward the pen barrel.

[0013] Furthermore, the front section of the inner cylinder includes an inner cylinder wing ring, an inner cylinder cone section, and an inner cylinder head section. The rear section of the inner cylinder is sequentially fixedly connected to the inner cylinder wing ring, the inner cylinder cone section, and the inner cylinder head section from the pen barrel toward the pen tip. A preset gap is reserved between the inner cylinder head section and the outer cylinder opening edge and the middle section of the outer cylinder.

[0014] Furthermore, the outer cylinder rim includes anti-slip serrations, which are located on the side facing the pen barrel.

[0015] Furthermore, the inner cylinder wing ring includes wing ring anti-slip teeth, the wing ring anti-slip teeth are disposed on the side facing the pen tip, and the rim anti-slip teeth are adapted to the wing ring anti-slip teeth.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. In this solution, the pen barrel can be used for a long time, while the consumable pen tip can be easily replaced, which is economical. One pen barrel can be matched with different pen tips, making it multi-purpose and more economical and environmentally friendly.

[0018] 2. This solution can separate the brush into the brush head and the brush handle. The brush head is equipped with a brush head moisturizing box, which can be stored in the exquisite moisturizing box for temporary moisturization. The brush handle can be stored in a pencil case, which can effectively solve the problems of storage, moisturization and carrying. The special brush head moisturizing box is small and exquisite, which solves the problems of sealing difficulties, excessive size and inconvenience of carrying the whole brush.

[0019] 3. The magnetically plucked brush in this design has a simple structure. Its core structure consists of only four components: two inner and outer cylindrical structures and two cylindrical permanent magnets. It is easy to implement and not easily damaged. Its appearance is the same as that of a traditional brush.

[0020] 4. With this solution, the pen tip and pen barrel only need to be brought close to each other, and the pen tip will automatically rotate to align with the position. The magnetic attraction of the outer cylinder magnetic structure and the inner cylinder magnetic structure can firmly attract the pen tip to the pen barrel.

[0021] 5. This solution utilizes the inherent magnetic attraction between opposite poles and repulsion between like poles of a multipole magnet. When disassembling the brush, the magnetic attraction can be eliminated by twisting the brush head and the brush handle at a relatively small angle, allowing the brush head and the brush handle to separate on their own. It is simple and quick, and the ingenious sleeve design prevents radial misalignment between the brush head and the brush handle.

[0022] 6. The anti-slip serrations on the contact surfaces of the outer and inner magnetic components in this design prevent the pen tip from rotating arbitrarily. A gap is left between the front sections of the outer and inner cylinders, and conical sections are provided on the front sections of the outer and inner cylinders respectively. The reserved gap allows the front section of the inner cylinder to be quickly and smoothly inserted into the front section of the outer cylinder. The conical sections of the outer and inner cylinders reduce the gap between the front sections of the outer and inner cylinders to zero after the pen tip is installed, fundamentally eliminating the problem of the pen tip wobbling on the pen barrel.

[0023] This invention perfectly solves the problems of axial detachment, radial misalignment, circumferential rotation, and wobbling of the detachable brush tip. The assembly and disassembly of the brush tip and the brush handle are very simple and quick, ensuring normal use and a good user experience when the brush is magnetically unscrewed. The separated brush tip can be stored and kept moist in a brush tip moisturizing box, and the brush handle is more convenient to carry. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a magnetically stabilized rotating brush proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the disassembled structure of a magnetically stabilized, rotating calligraphy brush proposed in this utility model.

[0026] Figure 3 This is a detailed structural diagram of the magnetically stabilizing and unscrewing outer cylinder magnetic attraction structure of a calligraphy brush proposed in this utility model;

[0027] Figure 4 This is a detailed structural diagram of the magnetic suction structure of the inner cylinder of a magnetically stabilized and unscrewed calligraphy brush proposed in this utility model.

[0028] Figure 5 This is a schematic diagram showing the completed connection between the outer cylinder magnetic suction structure and the inner cylinder magnetic suction structure of a magnetically stabilized and unscrewed brush according to this utility model.

[0029] Figure 6 This is a schematic diagram of a magnetically stabilizing and unscrewing magnetic structure for the outer cylinder of a calligraphy brush, as proposed in this utility model.

[0030] Figure 7 This is a schematic diagram of a magnetically stabilizing and rotating inner cylinder magnetic attraction structure for a calligraphy brush, as proposed in this utility model.

[0031] Figure 8 This is a schematic diagram of the outer cylinder magnet structure of a magnetically stabilized and unscrewed calligraphy brush proposed in this utility model;

[0032] Figure 9 This is a schematic diagram of the inner cylinder magnet structure of a magnetically stabilized and unscrewed calligraphy brush proposed in this utility model.

[0033] Reference numerals: 1. Pen tip; 2. Pen barrel; 3. Outer cylinder magnetic structure; 31. Outer cylinder front section; 311. Outer cylinder rim; 3111. Rim anti-slip teeth; 312. Outer cylinder middle section; 313. Outer cylinder conical section; 32. Outer cylinder rear section; 33. Outer cylinder magnet; 4. Inner cylinder magnetic structure; 41. Inner cylinder front section; 411. Inner cylinder wing ring; 4111. Wing ring anti-slip teeth; 412. Inner cylinder conical section; 413. Inner cylinder head section; 42. Inner cylinder rear section; 43. Inner cylinder magnet. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] Example 1

[0036] Reference Figures 1 to 9A magnetically stabilized, screw-on calligraphy brush includes: a brush head 1 and a brush handle 2. An outer cylinder magnetic attraction structure 3 is fixedly disposed on the brush head 1 away from the bristle tip. The outer cylinder magnetic attraction structure 3 includes an outer cylinder magnet 33. An inner cylinder magnetic attraction structure 4 is fixedly disposed on the end of the brush handle 2 facing the brush head 1. The inner cylinder magnetic attraction structure 4 includes an inner cylinder magnet 43. Multiple magnetic poles are provided inside both the outer cylinder magnet 33 and the inner cylinder magnet 43, and the positions of the magnetic poles between the outer cylinder magnet 33 and the inner cylinder magnet 43 are... Correspondingly, the outer cylinder magnet 33 and the inner cylinder magnet 43 attract the pen tip 1 to the pen barrel 2 by magnetic attraction. The outer cylinder magnet 33 and the inner cylinder magnet 43 are multi-pole magnetized cylindrical permanent magnets, or multiple permanent magnet columns arranged along the circumference to form a cylindrical structure with adjacent magnetic poles having different magnetic properties. The outer cylinder magnet 33 and the inner cylinder magnet 43 mentioned above are each provided with multiple magnetic poles, where multiple means no less than two magnetic poles, and adjacent magnetic poles have different magnetic properties.

[0037] Reference Figure 1 and Figure 2 The outer cylinder magnet 33 and the inner cylinder magnet 43 can be regarded as multi-pole magnetized cylindrical permanent magnets. Multi-pole magnetization refers to the magnetization process of two or more pairs of magnetic poles on the same magnet; or multiple permanent magnet columns are arranged along the circumference to form a cylindrical structure with adjacent magnetic poles having different magnetic properties.

[0038] Reference Figure 8 and Figure 9 Both the outer cylinder magnet 33 and the inner cylinder magnet 43 are cylindrical permanent magnets with two poles, that is, S pole and N pole magnetism are obtained in the same magnetization direction of the same magnet. Compared with the columnar structure formed by arranging multiple permanent magnet columns along the circumference to form adjacent magnetic columns with different magnetic poles, the multi-pole magnetization scheme adopted in this embodiment has a more compact structure and smaller volume, which is especially suitable for situations where the installation space of the brush handle and brush tip is very limited. The permanent magnets mentioned above are neodymium iron boron magnets in alloy permanent magnet materials.

[0039] Reference Figure 2 and Figure 5 The outer cylinder magnetic structure 3 includes an outer cylinder front section 31, and an outer cylinder rear section 32 is fixedly connected to one side of the outer cylinder front section 31. The outer cylinder rear section 32 is located inside the pen head 1 away from the tip and is fixedly connected to the pen head 1; or the outer cylinder rear section 32 and the outer cylinder front section 31 are both located inside the pen head 1 away from the tip and are fixedly connected to the pen head 1; the outer cylinder magnet 33 is located inside the outer cylinder rear section 32. The inner cylinder magnetic structure 4 includes an inner cylinder front section 41, and an inner cylinder rear section 42 is fixedly connected to one side of the inner cylinder front section 41. The inner cylinder rear section 42 is located inside the pen barrel 2 facing the pen head 1 and is fixedly connected to the pen barrel 2; the inner cylinder magnet 43 is located inside the inner cylinder front section 41; the outer cylinder front section 31 is a rotating body, and the inner cylinder front section 41 is a rotating body or a regular polyhedral prism. The inner cylinder front section 41 can rotate within the outer cylinder front section 31.

[0040] The outer cylinder front section 31 is a rotating body, including but not limited to a cylinder, a cone, a frustum, etc.; the inner cylinder front section 41 is a rotating body or a regular polyhedral cylinder, including but not limited to a cylinder, a cone, a frustum, a regular polyhedral cylinder, a regular polyhedral cone, a regular polyhedral frustum, etc.

[0041] Reference Figure 6 and Figure 7 Both the outer tube front section 31 and the inner tube front section 41 are cylindrical. The inner tube front section 41 is inserted into the outer tube front section 31 and can rotate. When the pen tip 1 and the pen barrel 2 need to be connected as a whole, the inner tube front section 41 is inserted into the outer tube front section 31. The outer tube magnet 33 and the inner tube magnet 43 attract the pen tip 1 and the pen barrel 2 together under the action of magnetic force. The circumferential angle between the pen tip 1 and the pen barrel 2 can be arbitrarily adjusted during the insertion process without manual adjustment. With the multi-pole magnet setting, the pen tip 1 will automatically rotate and adjust its circumferential angle with the pen barrel 2, so that the magnetic poles with opposite magnetic properties correspond to each other. When disassembling the brush, simply pinch the pen tip 1 and the pen barrel 2 with your hands and twist them at an angle of 90 to 180 degrees. This will cause the relative position of the outer cylinder magnet 33 and the inner cylinder magnet 43 to transition from a magnetic attraction position to a magnetic repulsion position. The interaction force between the pen tip 1 and the pen barrel 2 will transition from magnetic attraction to magnetic repulsion, and the pen tip 1 and the pen barrel 2 will separate on their own.

[0042] The innovation of the multi-pole magnetization scheme used in this embodiment compared to the single-pole magnetization scheme is as follows: For the single-pole magnetization scheme, the axial magnetic force is strong, and the brush must be forcibly pulled apart along the axis of the brush when it is separated, which requires a large pulling force and is a rough action; while for the multi-pole magnetization scheme used in this embodiment, the brush is separated by twisting the brush head 1 and the brush handle 2 along the tangential direction, which minimizes the resistance. The brush head 1 and the brush handle 2 can be separated by a very small torque, which is gentle and has a small range of motion, resulting in a better user experience; during the rotation, the front section 41 of the inner cylinder is inserted into the front section 31 of the outer cylinder, which serves as a rotation positioning shaft and a bushing; the formed sleeve structure prevents radial misalignment between the brush head 1 and the brush handle 2 at the connection point during writing, and also prevents the brush from bending at the joint of the brush head 1 and the brush handle 2 during use.

[0043] like Figure 5 As shown, the outer cylinder magnet 33 is fixedly installed in the rear section 32 of the outer cylinder, and the inner cylinder magnet 43 is fixedly installed in the front section 41 of the inner cylinder. The depth of the front section 31 of the outer cylinder is adapted to the length of the front section 41 of the inner cylinder. After the front section 41 of the inner cylinder and the front section 31 of the outer cylinder are inserted, the outer cylinder magnet 33 and the inner cylinder magnet 43 should be close enough to generate a magnetic force of a preset strength. Because the magnetic attraction of the two magnets is greatly affected by the distance, the distance between the outer cylinder magnet 33 and the inner cylinder magnet 43 should be close enough after they are inserted.

[0044] like Figure 3 , Figure 4 , Figure 5As shown, the outer cylinder front section 31 includes an outer cylinder rim 311, an outer cylinder middle section 312, and an outer cylinder conical section 313; the outer cylinder rear section 32 is sequentially fixedly connected to the outer cylinder conical section 313, the outer cylinder middle section 312, and the outer cylinder rim 311 in the direction from the pen barrel 2 to the pen tip 1; the inner cylinder front section 41 includes an inner cylinder wing ring 411, an inner cylinder conical section 412, and an inner cylinder head section 413; the inner cylinder rear section 42 is sequentially fixedly connected to the inner cylinder wing ring 411, the inner cylinder conical section 412, and the inner cylinder head section 413 in the direction from the pen barrel 2 to the pen tip 1; a preset gap is reserved between the inner cylinder head section 413 and the outer cylinder rim 311 and the outer cylinder middle section 312. After the inner cylinder front section 41 and the outer cylinder front section 31 are connected, the inner cylinder head section 413 touches the outer cylinder conical section 313 and the gap between them disappears, and at the same time, the inner cylinder conical section 412 touches the outer cylinder rim 311 and the gap between them disappears.

[0045] like Figure 3 , Figure 4 and Figure 5 As shown, the outer cylinder rim 311 includes an anti-slip serration 3111, which is located on the side facing the pen barrel 2; the inner cylinder wing ring 411 includes an anti-slip serration 4111, which is located on the side facing the pen tip 1; the anti-slip serration 3111 and the anti-slip serration 4111 are adapted to each other.

[0046] like Figure 3 , Figure 4 , Figure 5 As shown, the middle section 312 of the outer cylinder serves as a transition section connecting the outer cylinder opening edge 311 and the outer cylinder conical section 313; from the middle section 312 of the outer cylinder to the rear section 32 of the outer cylinder, the inner diameter of the outer cylinder conical section 313 gradually decreases, and the inner cylinder conical section 412 serves as a transition section connecting the inner cylinder wing ring 411 and the inner cylinder head section 413; from the inner cylinder head section 413 to the inner cylinder wing ring 411, the outer diameter of the inner cylinder conical section 412 gradually increases; a certain gap is provided between the outer wall of the inner cylinder head section 413 and the inner wall of the outer cylinder middle section 312 and the outer cylinder opening edge 311, and the recommended bilateral gap value is 0.05 mm to 0.15 mm, so that the inner cylinder front section 41 can be quickly and easily inserted into the outer cylinder front section 31.

[0047] In this embodiment, all the main structural components of the pen tip 1, pen barrel 2, outer cylinder magnetic structure 3 and inner cylinder magnetic structure 4, except for the outer cylinder magnet 33 and the inner cylinder magnet 43, are made of non-magnetic materials, including but not limited to wood, bamboo, plastic, ox horn, jade, non-magnetic metals and non-magnetic alloys.

[0048] The implementation principle of a magnetically stabilized rotating brush in this application embodiment is as follows: In order to be used normally, the connection between the brush head 1 and the brush handle 2 must simultaneously achieve the following: First, the brush head 1 will not detach from the end of the brush handle along the brush axis; Second, the brush head 1 and the brush handle 2 will not undergo relative radial misalignment; Third, the brush head 1 and the brush handle 2 will not rotate relative to each other; Fourth, the brush head 1 will not wobble on the brush handle 2.

[0049] First, during normal writing, the axial force that causes the pen tip 1 to detach from the pen barrel 2 comes only from the weight of the pen tip. The magnetic attraction between the outer cylinder magnet 33 and the inner cylinder magnet 43 is greater than the weight of the pen tip, which ensures that the pen tip 1 will not fall off the pen barrel 2.

[0050] Secondly, the sleeve structure formed by inserting the inner cylinder front section 41 into the outer cylinder front section 31 prevents radial misalignment between the pen tip 1 and the pen barrel 2 at the connection point during writing.

[0051] Furthermore, when writing, twisting the pen or rotating the pen stroke generates a relative rotational force between the pen tip 1 and the pen barrel 2. However, this force is weak. Under the magnetic attraction of the outer cylinder magnet 33 and the inner cylinder magnet 43, the anti-slip teeth 3111 on the rim engage with the anti-slip teeth 4111 on the wing ring, generating resistance far greater than the rotational force. This effectively prevents the pen tip 1 and pen barrel 2 from rotating relative to each other. When it is necessary to separate the pen tip 1 and pen barrel 2, hold the pen tip 1 and pen barrel 2 with both hands and twist them relative to each other. This makes the torque greater than the engagement between the anti-slip teeth 3111 on the rim and the anti-slip teeth 4111 on the wing ring. The resistance formed by the combination allows for a smooth twisting angle greater than 90 degrees, causing the pen tip 1 to detach from the pen barrel 2 on its own. As long as the following conditions are met: the manual twisting torque > the resisting torque formed by the meshing of the teeth > the rotational torque generated by the writing action, the pen tip 1 and pen barrel 2 will not rotate relative to each other during writing, and can be easily and quickly twisted apart during disassembly. In this embodiment, the above conditions can be fully met by adjusting the strength of the magnetic force of the outer cylinder magnet 33 and the inner cylinder magnet 43, as well as the shape of the anti-slip teeth 3111 on the rim and the anti-slip teeth 4111 on the wing ring.

[0052] Finally, by setting an outer conical section 313 and an inner conical section 412 in the outer cylinder front section 31 and the inner cylinder front section 41 respectively, when the inner cylinder front section 41 is inserted into the outer cylinder front section 31, the front end of the inner cylinder front section 41 just touches the inner wall of the outer cylinder conical section 313 to form a zero gap. At the same time, the outer wall of the inner cylinder conical section 412 also just touches the inner wall of the opening edge of the outer cylinder front section 31 to form a zero gap. The sleeve structure with zero gap at both ends can fundamentally eliminate the problem of the pen tip 1 shaking on the pen barrel 2.

[0053] Example 2

[0054] The difference between this embodiment and Embodiment 1 is that the outer cylinder magnetic structure 3 can also be fixedly installed on the pen barrel 2, and correspondingly, the inner cylinder magnetic structure 4 is fixedly installed on the pen tip 1.

[0055] Example 3

[0056] The difference between this embodiment and Embodiment 1 is that an outer shell can be set to enclose the outer cylinder magnet 33 and the inner cylinder magnet 43 to protect the fragile and easily rusted outer cylinder magnet 33 and inner cylinder magnet 43 and extend their service life.

[0057] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A magnetically stabilized, screw-on calligraphy brush, characterized in that: include: The pen tip (1) and pen barrel (2) are provided. The pen tip (1) is fixedly provided with an outer cylinder magnetic structure (3) away from the tip. The outer cylinder magnetic structure (3) includes an outer cylinder magnet (33). The pen barrel (2) is fixedly provided with an inner cylinder magnetic structure (4) at one end facing the pen tip (1). The inner cylinder magnetic structure (4) includes an inner cylinder magnet (43). Both the outer cylinder magnet (33) and the inner cylinder magnet (43) are provided with multiple magnetic poles.

2. The magnetically stabilized rotating brush according to claim 1, characterized in that: The outer cylinder magnetic structure (3) includes an outer cylinder front section (31), and an outer cylinder rear section (32) is fixedly connected to one side of the outer cylinder front section (31). The outer cylinder rear section (32) is located inside the pen head (1) away from the tip of the brush and is fixedly connected to the pen head (1); or the outer cylinder rear section (32) and the outer cylinder front section (31) are both located inside the pen head (1) away from the tip of the brush and are fixedly connected to the pen head (1); the outer cylinder magnet (33) is located inside the outer cylinder rear section (32).

3. The magnetically stabilized rotating brush according to claim 1, characterized in that: The inner cylinder magnetic structure (4) includes an inner cylinder front section (41), and an inner cylinder rear section (42) is fixedly connected to one side of the inner cylinder front section (41). The inner cylinder rear section (42) is disposed inside the pen barrel (2) facing the pen tip (1) and is fixedly connected to the pen barrel (2). The inner cylinder magnet (43) is located inside the inner cylinder front section (41).

4. A magnetically stabilized rotating brush according to claim 3, characterized in that: The front section (31) of the outer cylinder is a rotating body, and the front section (41) of the inner cylinder is a rotating body or a regular polyhedron.

5. A magnetically stabilized rotating brush according to claim 2, characterized in that: The outer cylinder front section (31) includes an outer cylinder rim (311), an outer cylinder middle section (312), and an outer cylinder conical section (313). The outer cylinder rear section (32) is sequentially fixedly connected to the outer cylinder conical section (313), the outer cylinder middle section (312), and the outer cylinder rim (311) in the direction from the pen tip (1) to the pen barrel (2).

6. A magnetically stabilized rotating brush according to claim 3, characterized in that: The inner cylinder front section (41) includes an inner cylinder wing ring (411), an inner cylinder cone section (412), and an inner cylinder head section (413). The inner cylinder rear section (42) is fixedly connected to the inner cylinder wing ring (411), the inner cylinder cone section (412), and the inner cylinder head section (413) in sequence from the pen barrel (2) toward the pen tip (1). A preset gap is reserved between the inner cylinder head section (413) and the outer cylinder opening edge (311) and the outer cylinder middle section (312).

7. A magnetically stabilized rotating brush according to claim 5, characterized in that: The outer cylinder rim (311) includes anti-slip serrations (3111), which are provided on the side facing the pen barrel (2).

8. A magnetically stabilized rotating brush according to claim 6, characterized in that: The inner cylinder wing ring (411) includes wing ring anti-slip teeth (4111), the wing ring anti-slip teeth (4111) are provided on the side facing the pen tip (1), and the rim anti-slip teeth (3111) are adapted to the wing ring anti-slip teeth (4111).

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