Stepped neutral spring pen point

Abstract

The utility model relates to the technical field of gel pen assemblies, and discloses a stepped gel spring pen point which comprises a pen point shell made of stainless steel, the outer side of the pen point shell is arranged in a stepped mode from bottom to top, a group of annular grooves are formed in the outer side wall of the upper end of the pen point shell, and the annular grooves are arranged at equal intervals from top to bottom. An embedding installation groove is formed in the center of the top end of the pen point shell, and an ink groove is formed in the center of the bottom end of the pen point shell. The embedding ring is arranged at the upper end of the ink groove in the pen head shell in a sliding mode, the cambered surface attaching groove of the ball is formed in the center of the top of the embedding ring, the positioning rod is arranged at the bottom of the embedding ring for positioning, and the spring is arranged at the bottom of the embedding ring and matched with the outer side of the positioning rod for abutting. In addition, a plurality of ink guide holes are further formed in the bottom of the embedding ring, when instantaneous large pressure is applied, the ball cannot be embedded into a plurality of inner rings at the end of the spring, and contact with the ball for writing is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gel pen components, in particular to a stepped neutral spring pen head. Background Art

[0002] Gel pen, full name medium viscosity gel water-based pigment ink, also known as neutral ink ballpoint pen, is a writing tool originated in Japan. It has smooth writing, continuous strokes, and no ink bleeding. It has the advantages of both fountain pen and oil-based ballpoint pen. The appearance of a gel pen is similar to a ballpoint pen, with a replaceable refill inside. The viscosity of the writing ink is between the viscosity of water-based ballpoint pen and oil-based ballpoint pen ink. Because the viscosity of the writing medium is between water-based and oil-based, the ballpoint pen is called a gel pen; the metal tip (stainless steel, copper, stainless steel) used for writing in front is called a gel pen head.

[0003] The utility model with prior art publication number CN215552127U relates to a double-ball spring pen tip, comprising a main body, which is tubular and has a tube hole. A first ball, a second ball and a spring are arranged in sequence from front to back in the tube hole. A ball holder for the first ball to rotate is arranged at the front end of the tube hole. The first ball is partially exposed at a port at the front end of the tube hole. The rear end of the spring is limited in the tube hole, and the front end is against the first ball. It is characterized in that the outer side wall of the main body comprises a first part, a second part, a third part and a fourth part arranged in sequence from front to back. The double-ball spring pen tip has a long service life, is conducive to students learning to write, and has good leakage resistance.

[0004] However, the above-mentioned pen tip still has the following problems when in use: the ball used for tightening mainly relies on direct contact with the spring, and the ball is embedded in the inner circle of the end of the spring. If a large instantaneous pressure is applied, the ball is very easy to be embedded in multiple inner circles at the end of the spring, affecting the contact with the writing ball and causing damage to the overall stepped neutral spring pen tip. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a stepped neutral spring pen tip, which solves the problems raised by the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stepped neutral spring pen tip, comprising a pen tip shell, the pen tip shell is made of stainless steel, the outer side of the pen tip shell is arranged in a stepped shape from bottom to top, a group of annular grooves are opened on the outer side wall of the upper end of the pen tip shell, a group of annular grooves are multiple and are arranged equidistantly from top to bottom, a fitting installation groove is opened at the center position of the top end of the pen tip shell, an ink groove is opened at the center position of the bottom end of the pen tip shell, the ink groove and the fitting installation groove are connected, a first ball is rollingly connected in the fitting installation groove, a second ball is rollingly connected at the top of the ink groove, and the top of the second ball slides in contact with the first ball.

[0009] As a further solution of the utility model: the second ball is rollingly connected to a fitting ring at the bottom, a spring is slidingly contacted to the bottom of the fitting ring, a positioning mechanism is arranged at the center of the bottom wall of the fitting ring, an arc-shaped fitting groove is opened at the center of the top of the fitting ring, and the second ball is rollingly connected in the arc-shaped fitting groove, and six ink guide holes are opened in a circular shape with equal distances between the upper and lower side walls of the fitting ring.

[0010] As a further solution of the utility model: the positioning mechanism includes a positioning rod fixedly connected to the center position of the bottom wall of the interlocking ring, the positioning mechanism also includes a positioning ring fixedly connected to the inner wall of the opening below the ink groove, the top wall of the positioning ring is fixedly connected to the end of the bottom wall of the spring, a positioning hole is opened between the center positions of the upper and lower side walls of the positioning ring, the positioning rod is slidably connected in the positioning hole, and two ink guide grooves are opened between the upper and lower side walls of the positioning ring and symmetrically about the positioning hole.

[0011] As a further solution of the utility model: a thread groove is formed on the outer side wall of the bottom of the nib shell, and a retaining ring is fixedly sleeved on the outer side wall of the bottom of the nib shell and located above the thread groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, a fitting ring is slidably arranged on the upper end of the ink groove inside the pen head shell, and an arc-surface fitting groove for a ball is provided at the center position of the top of the fitting ring. At the same time, a positioning rod is provided at the bottom of the fitting ring for positioning. A spring is also provided at the bottom of the fitting ring to cooperate with the outer side of the positioning rod for abutment. In addition, a plurality of ink guide holes are also provided at the bottom of the fitting ring. When a large instantaneous pressure is applied, the ball will not fit into the plurality of inner circles at the end of the spring, thereby ensuring contact with the writing ball.

[0014] 2. In the utility model, the outer side of the nib shell is arranged in a stepped shape, so that when assembling the steel ball, the gap between the nib shell and the steel ball can be smaller, thereby improving the sealing performance. At the same time, a group of annular grooves are opened on the upper end of the nib shell to improve the anti-slip performance of the nib when holding it. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The overall three-dimensional Figure 1 ;

[0016] Figure 2 The overall three-dimensional Figure 2 ;

[0017] Figure 3 It is an overall cutaway stereogram of the utility model.

[0018] In the figure: 1, pen tip shell; 2, fitting installation groove; 3, ink groove; 4, first ball; 5, second ball; 6, annular groove; 7, fitting ring; 8, ink guide hole; 9, positioning rod; 10, positioning ring; 11, positioning hole; 12, ink guide groove; 13, spring; 14, retaining ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that the ball is a prior art and is common knowledge to those skilled in the art, and will not be described in detail here.

[0021] See also Figures 1 to 3 In the embodiment of the utility model, the stepped neutral spring pen tip comprises a pen tip shell 1, which is made of stainless steel. The outer side of the pen tip shell 1 is arranged in a stepped shape from bottom to top. A group of annular grooves 6 are opened on the outer side wall of the upper end of the pen tip shell 1. A group of annular grooves 6 are multiple and are arranged equidistantly from top to bottom. A chimeric mounting groove 2 is opened at the center position of the top of the pen tip shell 1, and an ink groove 3 is opened at the center position of the bottom end of the pen tip shell 1. The ink groove 3 is connected to the chimeric mounting groove 2 in a connected manner. A first ball 4 is rollingly connected in the chimeric mounting groove 2, and a second ball 5 is rollingly connected at the top of the ink groove 3. The top of the second ball 5 slides in contact with the first ball 4. The outer side of the pen tip shell 1 is arranged in a stepped shape. When assembling the steel ball, the gap between it and the pen tip shell 1 can be smaller, so that its sealing is better. At the same time, a group of annular grooves 6 are opened at the upper end of the pen tip shell 1 to improve the anti-slip performance of the pen tip when holding it.

[0022] The second ball 5 is rollingly connected with a fitting ring 7 at the bottom, and a spring 13 is slidingly contacted at the bottom of the fitting ring 7. A positioning mechanism is arranged at the center of the bottom wall of the fitting ring 7. An arc-shaped fitting groove is provided at the center of the top of the fitting ring 7, and the second ball 5 is rollingly connected in the arc-shaped fitting groove. Six ink guide holes 8 are provided in annular shapes with equal distances between the upper and lower side walls of the fitting ring 7. A fitting ring 7 is slidingly provided at the upper end of the ink groove 3 inside the pen head shell 1. An arc-shaped fitting groove for the ball is provided at the center of the top of the fitting ring 7. At the same time, a positioning rod 9 is arranged at the bottom of the fitting ring 7 for positioning. A spring 13 is also arranged at the outside of the positioning rod 9 at the bottom of the fitting ring 7 for abutment. In addition, a plurality of ink guide holes 8 are also arranged at the bottom of the fitting ring 7. When a large instantaneous pressure is applied, the ball will not fit into the multiple inner circles at the end of the spring 13, thereby ensuring contact with the writing ball.

[0023] The positioning mechanism includes a positioning rod 9 fixedly connected to the center position of the bottom wall of the chimeric ring 7, and the positioning mechanism also includes a positioning ring 10 fixedly connected to the inner wall of the opening below the ink groove 3. The top wall of the positioning ring 10 is fixedly connected to the bottom wall end of the spring 13. A positioning hole 11 is provided between the center positions of the upper and lower side walls of the positioning ring 10. The positioning rod 9 is slidably connected in the positioning hole 11 to play a positioning role for the positioning rod 9, and further plays a positioning role for the chimeric ring 7 connected to the positioning rod 9. Two ink guide grooves 12 are provided between the upper and lower side walls of the positioning ring 10 and are symmetrical about the positioning hole 11 to play an ink guiding role.

[0024] A thread groove is provided on the outer side wall of the bottom of the pen shell 1 , and a retaining ring 14 is fixedly sleeved on the outer side wall of the bottom of the pen shell 1 and located above the thread groove. The body of the gel pen can be installed through the cooperation of the retaining ring 14 with the thread at the bottom of the pen shell 1 .

[0025] The working principle of the utility model is as follows: the body of the gel pen can be installed through the bottom thread of the pen shell 1 and the retaining ring 14. The upper end of the ink groove 3 inside the pen shell 1 is slidably provided with a fitting ring 7. The center position of the top of the fitting ring 7 is provided with an arc-surface fitting groove for the ball. At the same time, a positioning rod 9 is provided at the bottom of the fitting ring 7 for positioning. The bottom of the fitting ring 7 is also provided with a spring 13 on the outside of the positioning rod 9 for abutment. In addition, a plurality of ink guide holes 8 are provided at the bottom of the fitting ring 7. When a large instantaneous pressure is applied, the ball will not be fitted into the plurality of inner circles at the end of the spring 13, thereby ensuring contact with the writing ball. In addition, the outer side of the pen shell 1 is arranged in a stepped shape. When assembling the steel ball, the gap between it and the pen shell 1 can be smaller, thereby improving its sealing performance. At the same time, a group of annular grooves 6 are provided at the upper end of the pen shell 1 to improve the anti-slip performance of the pen when holding it.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stepped neutral spring pen tip, comprising a pen tip shell (1); Features: The pen tip shell (1) is made of stainless steel, the outer side of the pen tip shell (1) is arranged in a stepped shape from bottom to top, and a group of annular grooves (6) are provided on the outer side wall of the upper end of the pen tip shell (1), and the group of annular grooves (6) is multiple and arranged in an equidistant shape from top to bottom; A fitting installation groove (2) is provided at the center of the top end of the nib shell (1), and an ink groove (3) is provided at the center of the bottom end of the nib shell (1), wherein the ink groove (3) is connected to the fitting installation groove (2); A first ball (4) is rollingly connected in the embedded installation groove (2), a second ball (5) is rollingly connected in the top of the ink groove (3), the top of the second ball (5) is in sliding contact with the first ball (4), and the bottom of the second ball (5) is rollingly connected to a embedding ring (7); The bottom of the chimeric ring (7) is in sliding contact with a spring (13), and a positioning mechanism is provided at the center of the bottom wall of the chimeric ring (7).

2. The stepped neutral spring pen tip according to claim 1, characterized in that: A curved fitting groove is provided at the center of the top of the chimeric ring (7), and the second ball (5) is rollingly connected in the curved fitting groove.

3. The stepped neutral spring pen tip according to claim 1, characterized in that: Six ink guide holes (8) are provided in an annular shape and at equal distances between the upper and lower side walls of the chimeric ring (7).

4. The stepped neutral spring pen tip according to claim 1, characterized in that: The positioning mechanism comprises a positioning rod (9) fixedly connected to the center position of the bottom wall of the interlocking ring (7), and the positioning mechanism also comprises a positioning ring (10) fixedly connected to the inner wall of the lower opening of the ink tank (3).

5. The stepped neutral spring pen tip according to claim 4, characterized in that: The top wall of the positioning ring (10) is fixedly connected to the bottom wall end of the spring (13), and a positioning hole (11) is provided between the center positions of the upper and lower side walls of the positioning ring (10), and a positioning rod (9) is slidably connected in the positioning hole (11).

6. The stepped neutral spring pen tip according to claim 4, characterized in that: Two ink guide grooves (12) are provided between the upper and lower side walls of the positioning ring (10) and are symmetrical with respect to the positioning hole (11).

7. The stepped neutral spring pen tip according to claim 1, characterized in that: A thread groove is formed on the outer side wall of the bottom of the nib shell (1), and a retaining ring (14) is fixedly sleeved on the outer side wall of the bottom of the nib shell (1) and located above the thread groove.

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