Magnetic stable unscrewing writing brush

Abstract

The invention 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. The problems of axial falling, radial dislocation, annular rotation and shaking of the pen point of the 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 suction 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] The present application relates to the technical field of calligraphy and painting tools, and in particular to a magnetically stable twist-open writing brush. Background Art

[0002] As the core tool for calligraphy creation, the storage and maintenance of the brush should be taken seriously. Traditional brushes are long, and it is more inconvenient to carry the brush tip after dipping it in ink. There is a lack of a special storage system to ensure the safety and moisture retention of the brush tip. The moisturizing and maintenance of the brush tip used frequently for writing is particularly critical. The brush hair will become dry and hard if not washed for a few hours, and frequent washing will cause unnecessary damage to the brush tip. Therefore, it is very necessary to temporarily moisturize the brush tip when you stop writing for a short time. In some specific scenarios, such as going out and students taking calligraphy classes, sometimes it is not necessary to wash the brush tip. When it is very convenient, you need to store the ink-containing brush in a moisturizing box for moisturizing and take it home for cleaning; currently most of the products on the market are for storing, carrying and moisturizing the entire brush, the containing box is large and bulky, the moisturizing effect is not good, the leakage problem is not completely solved, and it cannot be carried; in summary, the brush can be split into a brush head and a pen holder, the brush head can be stored in a delicate moisturizing box, and the pen holder can be stored in an ordinary pencil case, which can better solve the problems of moisturizing and carrying; therefore, whether from the perspective of moisturizing or portability, there is a need to separate the brush head from the pen holder.

[0003] Another important reason why we hope that the pen tip and pen barrel can be separated is that the pen barrel is a durable product that can be used for a long time, while the pen tip is a consumable item that is consumed and discarded after a few weeks. By separating the pen barrel from the pen tip, the worn pen tip can be easily replaced, and the long-term use of the pen barrel is more economical and environmentally friendly.

[0004] Currently, there are some brushes on the market whose pen holders and pen heads can be separated. Most of them are connected by screwing a screw. When installing and disassembling, the pen head and the pen holder must be screwed many times, which is cumbersome. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the pen holder and the pen head of some brushes are connected by screwing a screw buckle, and the pen head and the pen holder need to be screwed many times during installation and disassembly, which makes the operation cumbersome, and to propose a magnetically stable screw-open brush.

[0006] The present application provides a magnetically stable twist-open brush adopts the following technical solution:

[0007] A magnetically stable twist-open writing brush, comprising:

[0008] A pen tip and a pen shaft, wherein the pen tip is fixedly provided with an outer cylinder magnetic attraction structure component away from the pen tip end, and the outer cylinder magnetic attraction structure component includes an outer cylinder magnet; an inner cylinder magnetic attraction structure component is fixedly provided with an end of the pen shaft facing the pen tip, and the inner cylinder magnetic attraction structure component includes an inner cylinder magnet; and multiple magnetic poles are arranged in the outer cylinder magnet and the inner cylinder magnet.

[0009] Further, the outer cylinder magnetic attraction structural member includes a front section of the outer cylinder. One side of the front section of the outer cylinder is fixedly connected to a rear section of the outer cylinder. The rear section of the outer cylinder is disposed inside the pen tip away from the pen hair end and is fixedly connected to the pen tip; or the rear section of the outer cylinder and the front section of the outer cylinder are jointly disposed inside the pen tip away from the pen hair end and are fixedly connected to the pen tip; the outer cylinder magnet is located inside the rear section of the outer cylinder.

[0010] Further, the inner cylinder magnetic attraction structural member includes a front section of the inner cylinder. One side of the front section of the inner cylinder is fixedly connected to a rear section of the inner cylinder. The rear section of the inner cylinder is disposed inside the pen barrel towards the pen tip end and is fixedly connected to the pen barrel; the inner cylinder magnet is located inside the front section of the inner cylinder.

[0011] Further, 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 polyhedral column.

[0012] Further, the front section of the outer cylinder includes an outer cylinder rim, an outer cylinder middle section, and an outer cylinder tapered section. The rear section of the outer cylinder is fixedly connected to the outer cylinder tapered section, the outer cylinder middle section, and the outer cylinder rim in sequence in the direction from the pen tip to the pen barrel.

[0013] Further, the front section of the inner cylinder includes an inner cylinder wing ring, an inner cylinder tapered section, and an inner cylinder head section. The rear section of the inner cylinder is fixedly connected to the inner cylinder wing ring, the inner cylinder tapered section, and the inner cylinder head section in sequence in the direction from the pen barrel to the pen tip. A preset gap is reserved between the inner cylinder head section and both the outer cylinder rim and the outer cylinder middle section.

[0014] Further, the outer cylinder rim includes rim anti-slip tooth patterns, and the rim anti-slip tooth patterns are disposed on the side facing the pen barrel.

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

[0016] In summary, the present 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, and the consumable pen tip can be conveniently replaced, with good economy. One pen barrel can be matched with different pen tips, making it more reasonable, more economical, and more environmentally friendly to be used for multiple purposes and commonly used with one pen barrel;

[0018] 2. This solution can disassemble the writing brush into a pen tip and a pen barrel. The pen tip is equipped with a pen tip moisturizing box. The pen tip is stored in the delicate moisturizing box for temporary moisturizing, and the pen barrel is stored in the stationery box, which can better solve the problems of storage, moisturizing, and carrying. The special pen tip moisturizing box is small and delicate, solving the problems of difficult sealing for the whole pen's moisturizing, too large size, and inconvenient carrying;

[0019] 3. The magnetic attraction and rotation structure of the writing brush in this solution is simple. Its core structure only consists of two cylindrical structures, an inner cylinder and an outer cylinder, and two cylindrical permanent magnets, a total of four components. It is easy to implement and not easily damaged, and its appearance is the same as that of traditional writing brushes.

[0020] 4. In this solution, only when the pen tip and the pen barrel are close to each other, the pen tip will automatically rotate and align. Through the magnetic attraction of the outer cylinder magnetic attraction structure and the inner cylinder magnetic attraction structure, the pen tip can be firmly attracted to the pen barrel.

[0021] 5. This solution utilizes the inherent characteristics of multi-pole magnets, namely, the attraction between opposite magnetic poles and the repulsion between like magnetic poles. When disassembling the writing brush, a relatively small angle twist between the pen tip and the pen barrel can make the magnetic attraction disappear, enabling the pen tip and the pen barrel to separate automatically. It is simple and fast. The ingenious sleeve design prevents radial misalignment between the pen tip and the pen barrel.

[0022] 6. The anti-slip tooth patterns set on the contact surface of the outer cylinder magnetic attraction structure and the inner cylinder magnetic attraction structure prevent the pen tip from rotating randomly. There is a gap between the front section of the outer cylinder and the front section of the inner cylinder. At the same time, an outer cylinder conical section and an inner cylinder conical section are respectively set on the front section of the outer cylinder and the front section of the inner cylinder. The reserved gap can quickly and smoothly insert the front section of the inner cylinder into the front section of the outer cylinder. The outer cylinder conical section and the inner cylinder conical section reduce the gap between the front section of the outer cylinder and the front section of the inner cylinder to zero after the pen tip is installed, fundamentally eliminating the problem of the pen tip shaking on the pen barrel.

[0023] The present invention perfectly solves the problems of axial detachment, radial misalignment, circumferential rotation, and shaking of the pen tip of the detachable writing brush. Moreover, the combination and disassembly of the pen tip and the pen barrel are very simple and fast, ensuring the normal use and good user experience of the magnetic attraction and rotation writing brush. The separated pen tip can be placed in a pen tip moisturizing box for storage and moisturizing, and the pen barrel is more convenient to carry. Brief Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of a magnetic stability and rotation writing brush proposed by the present invention;

[0025] Figure 2 It is a schematic diagram of the disassembled structure of a magnetic stability and rotation writing brush proposed by the present invention;

[0026] Figure 3 It is a schematic diagram of the detailed structure of the outer cylinder magnetic attraction structure of a magnetic stability and rotation writing brush proposed by the present invention;

[0027] Figure 4 It is a schematic diagram of the detailed structure of the inner cylinder magnetic attraction structure of a magnetic stability and rotation writing brush proposed by the present invention;

[0028] Figure 5 It is a schematic diagram of the completed insertion of the outer cylinder magnetic attraction structure and the inner cylinder magnetic attraction structure of a magnetic stability and rotation writing brush proposed by the present invention;

[0029] Figure 6 Schematic diagram of the outer cylinder magnetic attraction structure part of a magnetically stabilized rotary-opening writing brush proposed by the present invention;

[0030] Figure 7 Schematic diagram of the inner cylinder magnetic attraction structure part of a magnetically stabilized rotary-opening writing brush proposed by the present invention;

[0031] Figure 8 Schematic diagram of the outer cylinder magnet structure of a magnetically stabilized rotary-opening writing brush proposed by the present invention;

[0032] Figure 9 Schematic diagram of the inner cylinder magnet structure of a magnetically stabilized rotary-opening writing brush proposed by the present invention.

[0033] Reference numerals: 1, pen tip; 2, pen shaft; 3, outer cylinder magnetic attraction structure part; 31, front section of the outer cylinder; 311, mouth edge of the outer cylinder; 3111, anti-slip tooth patterns on the mouth edge; 312, middle section of the outer cylinder; 313, tapered section of the outer cylinder; 32, rear section of the outer cylinder; 33, outer cylinder magnet; 4, inner cylinder magnetic attraction structure part; 41, front section of the inner cylinder; 411, wing ring of the inner cylinder; 4111, anti-slip tooth patterns on the wing ring; 412, tapered section of the inner cylinder; 413, head section of the inner cylinder; 42, rear section of the inner cylinder; 43, inner cylinder magnet. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0035] Embodiment 1

[0036] Refer to Figures 1 to 9 , a magnetically stabilized rotary-opening writing brush includes: a pen tip 1 and a pen shaft 2. An outer cylinder magnetic attraction structure part 3 is fixedly provided at the end of the pen tip 1 away from the pen hair end. The outer cylinder magnetic attraction structure part 3 includes an outer cylinder magnet 33. An inner cylinder magnetic attraction structure part 4 is fixedly provided at one end of the pen shaft 2 facing the pen tip 1. The inner cylinder magnetic attraction structure part 4 includes an inner cylinder magnet 43. A plurality of magnetic poles are provided inside both the outer cylinder magnet 33 and the inner cylinder magnet 43. The positions of the magnetic poles between the outer cylinder magnet 33 and the inner cylinder magnet 43 correspond to each other. The pen tip 1 is attracted and fixed on the pen shaft 2 by the magnetic attraction force between the outer cylinder magnet 33 and the inner cylinder magnet 43. The outer cylinder magnet 33 and the inner cylinder magnet 43 are cylindrical permanent magnets with multi-pole magnetization, or are cylindrical structural parts formed by arranging a plurality of permanent magnet columns in a circular arrangement with adjacent magnetic columns having different magnetic polarities; in the above, a plurality of magnetic poles are provided inside both the outer cylinder magnet 33 and the inner cylinder magnet 43. The plurality means not less than two magnetic poles, and adjacent magnetic poles have different magnetic polarities.

[0037] Refer to Figure 1 and Figure 2, the outer cylinder magnet 33 and the inner cylinder magnet 43 can be regarded as cylindrical permanent magnets with multi-pole magnetization. Multi-pole magnetization refers to the magnetization process of two or more pairs of magnetic poles on the same magnet; or it is a cylindrical structural member formed by arranging multiple permanent magnet columns in a circular arrangement with adjacent magnetic column poles having different magnetic polarities.

[0038] Refer to Figure 8 and Figure 9 , both the outer cylinder magnet 33 and the inner cylinder magnet 43 are cylindrical permanent magnets with two-pole magnetization, that is, the S pole and N pole magnetisms are obtained in the same magnetization direction of the same magnet; compared with the cylindrical structural member formed by arranging multiple permanent magnet columns in a circular arrangement with adjacent magnetic column poles having different magnetic polarities, the multi-pole magnetization scheme adopted in this embodiment has a more compact structure and a smaller volume, and is especially suitable for the case where the installation space for the pen tip and the pen barrel of the writing brush is very limited; the above-mentioned permanent magnet uses neodymium iron boron magnet in the alloy permanent magnet material.

[0039] Refer to Figure 2 and Figure 5 , the outer cylinder magnetic attraction structure member 3 includes an outer cylinder front section 31, and one side of the outer cylinder front section 31 is fixedly connected to an outer cylinder rear section 32. The outer cylinder rear section 32 is arranged inside the pen tip 1 away from the pen tip end and is fixedly connected to the pen tip 1; or the outer cylinder rear section 32 and the outer cylinder front section 31 are jointly arranged inside the pen tip 1 away from the pen tip end and are fixedly connected to the pen tip 1; the outer cylinder magnet 33 is located inside the outer cylinder rear section 32; the inner cylinder magnetic attraction structure member 4 includes an inner cylinder front section 41, and one side of the inner cylinder front section 41 is fixedly connected to an inner cylinder rear section 42. The inner cylinder rear section 42 is arranged inside the pen barrel 2 facing the pen tip 1 end 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, the inner cylinder front section 41 is a rotating body or a regular polyhedron column, and the inner cylinder front section 41 can rotate inside the outer cylinder front section 31.

[0040] The above-mentioned outer cylinder front section 31 is a rotating body, including but not limited to a cylindrical tube, a conical tube, a frustum tube, etc.; the inner cylinder front section 41 is a rotating body or a regular polyhedron column, including but not limited to a cylindrical tube, a conical tube, a frustum tube, a regular polyhedron column tube, a regular polyhedron cone tube, a regular polyhedron frustum tube, etc.

[0041] Refer to Figure 6 and Figure 7, the front section 31 of the outer barrel and the front section 41 of the inner barrel both adopt a round tube shape. The front section 41 of the inner barrel can rotate when inserted into the front section 31 of the outer barrel. When the pen tip 1 and the pen barrel 2 need to be connected into a whole, insert the front section 41 of the inner barrel into the front section 31 of the outer barrel. Under the magnetic force, the outer barrel magnet 33 and the inner barrel magnet 43 attract the pen tip 1 and the pen barrel 2 to each other. During the insertion process, the circumferential angle between the pen tip 1 and the pen barrel 2 can be arbitrary and does not require manual adjustment. Due to the arrangement of the multi-pole magnets of the outer barrel magnet 33 and the inner barrel magnet 43, the pen tip 1 will automatically rotate to adjust the circumferential angle with the pen barrel 2, so that the magnetic poles with different magnetisms correspond to each other. When disassembling the writing brush, just pinch the pen tip 1 and the pen barrel 2 with your hands and twist them by an angle of 90 to 180 degrees, so that the relative position between the outer barrel magnet 33 and the inner barrel magnet 43 transitions from the magnetic attraction position to the magnetic repulsion position, and the mutual force between the pen tip 1 and the pen barrel 2 transitions from magnetic attraction force to magnetic repulsion force, and the pen tip 1 and the pen barrel 2 will separate and disassemble by themselves.

[0042] The innovation point of the multi-pole magnetization scheme adopted in this embodiment compared with the single-pole magnetization is that: for the single-pole magnetization scheme, the axial magnetic force is strong. When disassembling the writing brush, it must be forcibly pulled apart along the axis of the writing brush, which requires a large pulling force and the action is rough; while for the multi-pole magnetization scheme adopted in this embodiment, when disassembling the writing brush, the pen tip 1 and the pen barrel 2 are twisted along the tangent direction, and the resistance received is the smallest. A very small torsion force can make the pen tip 1 and the pen barrel 2 separate by themselves. The action is light and the amplitude is small, and the user experience is good; during the rotation process, the front section 41 of the inner barrel is inserted into the front section 31 of the outer barrel, which plays the role of a rotating positioning shaft and a shaft sleeve; the formed sleeve structure blocks the radial displacement generated at the connection between the pen tip 1 and the pen barrel 2 during writing, and also prevents the writing brush from bending at the joint between the pen tip 1 and the pen barrel 2 when in use.

[0043] As Figure 5 shown, the outer barrel magnet 33 is fixedly installed on the rear section 32 of the outer barrel, and the inner barrel magnet 43 is fixedly installed on the front section 41 of the inner barrel; the depth of the front section 31 of the outer barrel is adapted to the length of the front section 41 of the inner barrel. After the front section 41 of the inner barrel is inserted into the front section 31 of the outer barrel, the outer barrel magnet 33 and the inner barrel magnet 43 should be close enough to generate a magnetic force of a preset intensity. Because the magnetic attraction force of the two magnets is greatly affected by the distance, the distance between the outer barrel magnet 33 and the inner barrel magnet 43 should be ensured to be close enough after being inserted in place.

[0044] As Figure 3 、 Figure 4 、 Figure 5As shown in the figure, the front section 31 of the outer barrel includes the outer barrel mouth edge 311, the middle section 312 of the outer barrel, and the tapered section 313 of the outer barrel; the rear section 32 of the outer barrel is fixedly connected to the tapered section 313 of the outer barrel, the middle section 312 of the outer barrel, and the outer barrel mouth edge 311 in sequence in the direction from the pen barrel 2 to the pen tip 1; the front section 41 of the inner barrel includes the inner barrel wing ring 411, the tapered section 412 of the inner barrel, and the head section 413 of the inner barrel; the rear section 42 of the inner barrel is fixedly connected to the inner barrel wing ring 411, the tapered section 412 of the inner barrel, and the head section 413 of the inner barrel in sequence in the direction from the pen barrel 2 to the pen tip 1; a preset gap is reserved between the head section 413 of the inner barrel and the outer barrel mouth edge 311 and the middle section 312 of the outer barrel. After the front section 41 of the inner barrel is inserted into the front section 31 of the outer barrel, the head section 413 of the inner barrel touches the tapered section 313 of the outer barrel and the gap between them disappears. At the same time, the tapered section 412 of the inner barrel touches the outer barrel mouth edge 311 and the gap between them disappears.

[0045] As Figure 3 , Figure 4 and Figure 5 shown, the outer barrel mouth edge 311 includes the mouth edge anti-slip tooth pattern 3111, and the mouth edge anti-slip tooth pattern 3111 is arranged on the side facing the pen barrel 2; the inner barrel wing ring 411 includes the wing ring anti-slip tooth pattern 4111, and the wing ring anti-slip tooth pattern 4111 is arranged on the side facing the pen tip 1; the mouth edge anti-slip tooth pattern 3111 is adapted to the wing ring anti-slip tooth pattern 4111.

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

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

[0048] The implementation principle of a magnetically stabilized rotary-opening writing brush in an embodiment of the present application is as follows: For normal use, the following conditions need to be met at the connection between the pen tip 1 and the pen barrel 2: First, the pen tip 1 will not axially disengage from the pen barrel end; Second, there will be no relative radial misalignment between the pen tip 1 and the pen barrel 2; Third, there will be no relative rotation between the pen tip 1 and the pen barrel 2; Fourth, the pen tip 1 will not wobble on the pen barrel 2.

[0049] First, when writing normally, the axial force that causes the pen tip 1 to disengage from the pen barrel 2 only comes from the gravity of the pen tip. If the magnetic attraction force between the outer cylinder magnet 33 and the inner cylinder magnet 43 is greater than the gravity of the pen tip, it can ensure that the pen tip 1 will not fall off the pen barrel 2.

[0050] Second, by inserting the front section 41 of the inner cylinder into the front section 31 of the outer cylinder, a sleeve-like structure is formed, which prevents radial misalignment from occurring at the connection between the pen tip 1 and the pen barrel 2 during writing.

[0051] Third, when twisting the pen barrel during writing or when the stroke turns, a relative rotational force will be generated between the pen tip 1 and the pen barrel 2. However, this force is weak. Under the action of the magnetic attraction force between the outer cylinder magnet 33 and the inner cylinder magnet 43, the anti-slip tooth pattern 3111 on the mouth edge meshes with the anti-slip tooth pattern 4111 on the wing ring, and the generated resistance is much greater than the rotational force, which can effectively prevent the relative rotation that may occur between the pen tip 1 and the pen barrel 2; When it is necessary to disassemble the pen tip 1 and the pen barrel 2, hold the pen tip 1 and the pen barrel 2 with both hands and make relative twisting, so that this torsional force is greater than the resistance formed by the meshing of the anti-slip tooth pattern 3111 on the mouth edge and the anti-slip tooth pattern 4111 on the wing ring, and an angle greater than 90 degrees can be smoothly twisted, and the pen tip 1 will disengage from the pen barrel 2 by itself; As long as the conditions are met: the artificially twisted torque > the blocking torque formed by the meshing of the tooth patterns > the rotational torque generated by the writing action, it can be ensured that there is no relative rotation between the pen tip 1 and the pen barrel 2 during writing, and the pen tip 1 and the pen barrel 2 can be quickly and conveniently twisted and disassembled during disassembly; In this embodiment, by adjusting the strength of the magnetic force between the outer cylinder magnet 33 and the inner cylinder magnet 43 and the shapes of the anti-slip tooth pattern 3111 on the mouth edge and the anti-slip tooth pattern 4111 on the wing ring, the above conditions can be fully met.

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

[0053] Embodiment 2

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

[0055] Example 3

[0056] The difference between this embodiment and the first embodiment is that a housing can be provided to wrap the outer cylinder magnet 33 and the inner cylinder magnet 43 to protect the fragile and rust-prone outer cylinder magnet 33 and inner cylinder magnet 43 and extend their service life.

[0057] As described above, the above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A magnetically stabilized rotary-opening writing brush, characterized in that: Comprising: A pen tip (1) and a pen barrel (2), an outer cylinder magnetic attraction structure member (3) is fixedly provided at the end of the pen tip (1) away from the pen nib, the outer cylinder magnetic attraction structure member (3) includes an outer cylinder magnet (33), an inner cylinder magnetic attraction structure member (4) is fixedly provided at one end of the pen barrel (2) facing the pen tip (1), the inner cylinder magnetic attraction structure member (4) includes an inner cylinder magnet (43), and a plurality of magnetic poles are arranged in both the outer cylinder magnet (33) and the inner cylinder magnet (43).

2. The magnetic-stabilized rotary-opening writing brush according to claim 1, characterized in that: The outer cylinder magnetic attraction structure member (3) includes an outer cylinder front section (31), one side of the outer cylinder front section (31) is fixedly connected to an outer cylinder rear section (32), the outer cylinder rear section (32) is arranged inside the pen tip (1) away from the pen nib and is fixedly connected to the pen tip (1); or the outer cylinder rear section (32) and the outer cylinder front section (31) are jointly arranged inside the pen tip (1) away from the pen nib and are fixedly connected to the pen tip (1); the outer cylinder magnet (33) is located inside the outer cylinder rear section (32).

3. A magnetically stabilized rotary-opening writing brush according to claim 1, wherein: The inner cylinder magnetic attraction structure member (4) includes an inner cylinder front section (41), one side of the inner cylinder front section (41) is fixedly connected to an inner cylinder rear section (42), the inner cylinder rear section (42) is arranged 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. The magnetic stable rotary open writing brush according to claim 3, characterized in that: 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 column.

5. A magnetically stabilized rotary-opening writing 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 tapered section (313), and the outer cylinder rear section (32) is fixedly connected to the outer cylinder tapered section (313), the outer cylinder middle section (312) and the outer cylinder rim (311) in sequence in the direction from the pen tip (1) to the pen barrel (2).

6. The magnetic-stabilized rotary-opening writing brush according to claim 3, characterized in that: The inner cylinder front section (41) includes an inner cylinder wing ring (411), an inner cylinder tapered section (412) and an inner cylinder head section (413), and the inner cylinder rear section (42) is fixedly connected to the inner cylinder wing ring (411), the inner cylinder tapered section (412) and the inner cylinder head section (413) in sequence in the direction from the pen barrel (2) to the pen tip (1), and a preset gap is reserved between the inner cylinder head section (413) and both the outer cylinder rim (311) and the outer cylinder middle section (312).

7. A magnetic-stable rotary-opening writing brush according to claim 5, characterized in that: The outer cylinder rim (311) includes rim anti-slip tooth patterns (3111), and the rim anti-slip tooth patterns (3111) are arranged on the side facing the pen barrel (2).

8. The magnetic-stabilized rotary-opening writing brush according to claim 6, characterized in that: The inner cylinder wing ring (411) includes wing ring anti-slip tooth patterns (4111), the wing ring anti-slip tooth patterns (4111) are arranged on the side facing the pen tip (1), and the rim anti-slip tooth patterns (3111) are adapted to the wing ring anti-slip tooth patterns (4111).

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