Rotary telescopic pen

Abstract

The utility model relates to a rotary telescopic pen, which comprises a pen cap assembly, a penholder assembly, a pen cap assembly, an inner sleeve assembly, a pushing assembly, a spring and a refill, the pen cap assembly is connected with the penholder assembly, the penholder assembly is connected with the pen cap assembly, the pen cap assembly is connected with the inner sleeve assembly, the inner sleeve assembly is connected with the pushing assembly, and the pushing assembly is connected with the spring. The pushing assembly is connected with the refill, the refill penetrates out of the pen cap assembly, and the spring is arranged on the refill in a sleeving mode and abuts against the refill and the pen cap assembly. The pen holder assembly is provided with a plurality of first trapezoidal convex rings and second trapezoidal convex rings, the pen sleeve assembly is provided with a plurality of first trapezoidal ring grooves, the inner sleeve assembly is provided with a plurality of second trapezoidal ring grooves, the first trapezoidal convex rings are connected with the first trapezoidal ring grooves, and the second trapezoidal convex rings are connected with the second trapezoidal ring grooves. When in use, the telescopic device can stretch out and draw back more quickly, stably, smoothly and effortlessly.

Description

Technical Field

[0001] The utility model belongs to the technical field of teaching equipment, and particularly relates to a rotary telescopic pen. Background Art

[0002] Automatic telescopic pens, as loyal companions in people's study and work, have become common items in daily life. They are part of culture and represent the crystallization of modern people's wisdom and creativity. When people pick up an automatic telescopic pen, its lines come to life. Whether sketching thoughts on draft paper or showing off talents on white paper, it can bring people great satisfaction with its smooth lines and precise depiction. All of this stems from the unique design and function of the automatic telescopic pen.

[0003] From the appearance, the shape of the automatic telescopic pen is simple and generous, with smooth lines. Its pen body is usually made of materials such as metal or plastic, which is both light and durable. And its core part - the refill, is an essential component. For a good automatic telescopic pen, the smoothness of the refill and the writing experience are both impeccable.

[0004] From the internal structure, the design of the automatic telescopic pen is full of wisdom and ingenuity. Its working principle is to use mechanical structures such as springs and clutches to drive the refill forward. Such a design not only makes writing easy and fast, but also greatly improves the writing efficiency and quality.

[0005] Most of the existing automatic telescopic pens are push-type, and only a very small number are rotary pens. And they are telescoped through matching threads, so a long thread structure is required, and the rotation time is long. Moreover, there are many defects in the rotary telescopic automatic pens on the market.

[0006] First of all, the refill replacement process of many rotary automatic telescopic pens is relatively complex. The refills of most automatic telescopic pens are wrapped with the inner shell into an integrated structure. Once the refill is exhausted, the whole pen needs to be discarded or disassembled complexly to replace the new refill. This not only increases the use cost, but also causes unnecessary pressure on the environment. In addition, the refill clamping mechanism of some automatic telescopic pens is not designed humanely, resulting in easy wrong operations or damage to the refill when replacing the refill.

[0007] Secondly, the rotation mechanism of some rotary automatic telescopic pens may be stuck or loose during use. This is mainly due to deficiencies in manufacturing processes or material selection. The instability of the rotation mechanism will not only affect the writing experience, but also have an adverse impact on the life of the pen. Content of the Utility Model

[0008] The technical problem to be solved by the present utility model is to provide a rotary telescopic pen, which can be telescoped more quickly, stably, smoothly and labor-savingly during use, and can replace the refill quickly and conveniently.

[0009] The present utility model provides a rotary telescopic pen, which includes a pen cap assembly, a pen barrel assembly, a pen sleeve assembly, an inner sleeve assembly, a pushing assembly and a refill. The top of the pen barrel assembly is provided with a pen sleeve mounting portion, and the outer wall of the pen sleeve mounting portion is provided with several circles of first trapezoidal convex rings. The inner wall of the pen sleeve assembly is provided with a pen barrel connecting portion, and the pen barrel connecting portion is provided with several circles of first trapezoidal ring grooves matching the first trapezoidal convex rings. The pen sleeve mounting portion is rotatably connected with the pen barrel connecting portion. The inner wall of the pen sleeve mounting portion is provided with several circles of second trapezoidal convex rings. The inner sleeve assembly is provided with several circles of second trapezoidal ring grooves matching the second trapezoidal convex rings. The pen barrel assembly is rotatably connected with the inner sleeve assembly. The cross-sections of the first trapezoidal convex rings and the second trapezoidal convex rings are both right trapezoids, and the cross-sections of the first trapezoidal ring grooves and the second trapezoidal ring grooves are both isosceles trapezoids. The inner sleeve assembly is rotatably and telescopically connected with the pushing assembly, the pushing assembly is connected with the refill, and the refill passes through the pen cap assembly.

[0010] Preferably, a first tooth engaging portion is further provided above the pen barrel connecting portion of the pen sleeve assembly, and a second tooth engaging portion matching the first tooth engaging portion is provided at the top of the inner sleeve assembly. The first tooth engaging portion is engaged with the second tooth engaging portion. A set of inclined threaded pushing grooves are further provided on the inner sleeve assembly. Micro protrusions are provided at both the top and the bottom of the pushing grooves, a retracting fixing groove is formed at the top of the pushing grooves, and an extending fixing groove is formed at the bottom of the pushing grooves. Two symmetric pushing blocks are provided at the top of the pushing assembly, and the pushing blocks are installed in the pushing grooves.

[0011] Preferably, it further includes a spring, the spring is sleeved on the refill and abuts against the refill and the pen cap assembly.

[0012] Preferably, a refill engaging portion is provided at the bottom of the pushing assembly, and the top of the refill is connected with the refill engaging portion.

[0013] Preferably, the pen cap assembly is provided with a pen cap thread, and the bottom of the pen barrel assembly is provided with a pen barrel thread matching the pen cap thread.

[0014] Preferably, a rotary push ring is further provided on the outer side of the pen sleeve assembly.

[0015] Preferably, the refill includes a refill rod, a spring mounting rod and a pen tip connected in sequence from top to bottom. The diameter of the refill rod is larger than the diameter of the spring, the diameter of the spring mounting rod is smaller than the diameter of the spring, the spring is sleeved in the spring mounting rod, and one end of the spring is connected with the refill rod and the other end is connected with the pen cap assembly.

[0016] The present utility model has the following technical effects:

[0017] 1. The cross-sections of the first trapezoidal convex ring and the second trapezoidal convex ring are right trapezoidal, which match the isosceles trapezoidal cross-sections of the first trapezoidal ring groove and the second trapezoidal ring groove. During the rotation process, the pen sleeve installation part and the pen rod connection part are completely fitted, and the pen rod assembly and the inner sleeve assembly are completely fitted. The contact area is large, the extrusion area is small, the rotation is smooth, and there is no jamming during rotation, making the pen sleeve assembly rotate more quickly, making the telescoping of the pen refill smoother and labor-saving.

[0018] 2. Through the engagement of the first tooth part and the second tooth part, when the pen sleeve assembly is rotated, the inner sleeve assembly is driven to rotate. By matching the pushing groove with the pushing block, when the inner sleeve assembly rotates, the pushing assembly is driven to move up and down quickly and stably, realizing the telescoping of the pen refill.

[0019] 3. Through the retraction fixing groove and the extension fixing groove in the pushing groove, the pen refill can be stably maintained in the final state after being fully telescoped and will not rotate under the influence of external forces such as writing. Therefore, while having high smoothness, its stability is ensured, and it has higher practicability.

[0020] 4. The pushing assembly drives the pen refill to move up and down to realize the extension and retraction of the pen refill.

[0021] 5. Rotating the pushing ring is more convenient and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic cross-sectional structure view of the present utility model;

[0023] Figure 2 is a schematic external structure view of the present utility model;

[0024] Figure 3 is a schematic cross-sectional structure view of the pen sleeve assembly of the present utility model;

[0025] Figure 4 is a schematic structure view of the pen rod assembly of the present utility model;

[0026] Figure 5 is a schematic structure view of the inner sleeve assembly of the present utility model;

[0027] Figure 6 is a schematic structure view of the pushing assembly of the present utility model;

[0028] Figure 7 is of the present utility model Figure 1 an enlarged schematic view of part A;

[0029] Figure 8 is of the present utility model Figure 5 an enlarged schematic view of part B.

[0030] In the figure: 1. Cap assembly; 2. Barrel assembly; 21. Sleeve mounting portion; 22. First trapezoidal convex ring; 23. Second trapezoidal convex ring; 3. Sleeve assembly; 31. Barrel connection portion; 32. First trapezoidal ring groove; 33. First tooth engaging portion; 34. Rotating push ring; 4. Inner sleeve assembly; 41. Second trapezoidal ring groove; 42. Second tooth engaging portion; 43. Pushing groove; 431. Retracting fixing groove; 432. Extending fixing groove; 5. Pushing assembly; 51. Pushing block; 52. Cartridge engaging portion; 6. Spring; 7. Cartridge; 71. Cartridge rod; 72. Spring mounting rod; 73. Tip. Detailed implementation mode

[0031] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be specifically described below with reference to the accompanying drawings.

[0032] As Figures 1 to 8As shown in the figure, a rotary telescopic pen includes a pen cap assembly 1, a pen barrel assembly 2, a pen sleeve assembly 3, an inner sleeve assembly 4, a pushing assembly 5, a spring 6, and a pen refill 7. The pen cap assembly 1 is connected to the pen barrel assembly 2, the pen barrel assembly 2 is connected to the pen sleeve assembly 3, the pen sleeve assembly 3 is connected to the inner sleeve assembly 4, the inner sleeve assembly 4 is connected to the pushing assembly 5, the pushing assembly 5 is connected to the pen refill 7, the pen refill 7 passes through the pen cap assembly 1, the spring 6 is sleeved on the pen refill 7 and abuts against the pen refill 7 and the pen cap assembly 1; a pen sleeve mounting portion 21 is provided at the top of the pen barrel assembly 2, and several circles of first trapezoidal convex rings 22 are provided on the outer wall of the pen sleeve mounting portion 21. The cross-section of the first trapezoidal convex ring 22 is a right trapezoid. A pen barrel connecting portion 31 is provided on the inner wall of the pen sleeve assembly 3, and several circles of first trapezoidal ring grooves 32 matching the first trapezoidal convex rings 22 are provided on the pen barrel connecting portion 31. The cross-section of the first trapezoidal ring groove 32 is an isosceles trapezoid, and the pen sleeve mounting portion 21 is connected to the pen barrel connecting portion 31; several circles of second trapezoidal convex rings 23 are provided on the inner wall of the pen sleeve mounting portion 21. The cross-section of the second trapezoidal convex ring 23 is a right trapezoid. The inner sleeve assembly 4 is provided with several circles of second trapezoidal ring grooves 41 matching the second trapezoidal convex rings 23. The cross-section of the second trapezoidal ring groove 41 is an isosceles trapezoid, and the pen barrel assembly 2 is connected to the inner sleeve assembly 4. Above the pen barrel connecting portion 31 in the pen sleeve assembly 3, a first tooth engaging portion 33 is further provided. A second tooth engaging portion 42 matching the first tooth engaging portion 33 is provided at the top of the inner sleeve assembly 4, and the first tooth engaging portion 33 is engaged with the second tooth engaging portion 42; a set of inclined threaded pushing grooves 43 are further provided on the inner sleeve assembly 4. Micro protrusions are provided at both the top and the bottom of the pushing groove 43. A retracting fixing groove 431 is formed at the top of the pushing groove 43, and an extending fixing groove 432 is formed at the bottom of the pushing groove 43. Two symmetric pushing blocks 51 are provided at the top of the pushing assembly 5, and the pushing blocks 51 are installed in the pushing grooves 43. By matching the right trapezoidal cross-sections of the first trapezoidal convex rings 22 and the second trapezoidal convex rings 23 with the isosceles trapezoidal cross-sections of the first trapezoidal ring grooves 32 and the second trapezoidal ring grooves 41, during the rotation process, the pen sleeve mounting portion 21 and the pen barrel connecting portion 31 are completely attached, and the pen barrel assembly 2 and the inner sleeve assembly 4 are completely attached. The contact area is large, the extrusion area is small, the rotation is smooth, and there is no jamming during rotation, making the pen sleeve assembly 3 rotate more quickly, making the telescoping of the pen refill 7 smoother and labor-saving; by engaging the first tooth engaging portion 33 with the second tooth engaging portion 42, when the pen sleeve assembly 3 is rotated, the inner sleeve assembly 4 is driven to rotate. By matching the pushing groove 43 with the pushing block 51, when the inner sleeve assembly 4 rotates, the pushing assembly 5 is driven to move up and down to realize the telescoping of the pen refill 7; through the retracting fixing groove 431 and the extending fixing groove 432 in the pushing groove 43, the pen refill 7 can be stably maintained in the final state after being fully telescoped and will not rotate under the influence of external forces such as writing. Therefore, while having high smoothness, its stability is ensured, and it has higher practicality.

[0033] The bottom of the pushing component 5 is provided with a nib engaging portion 52, and the top of the nib 7 is connected to the nib engaging portion 52. The pushing component 5 drives the nib 7 to move up and down, realizing the extension and retraction of the nib 7.

[0034] The pen cap component 1 is provided with a pen cap thread, and the bottom of the pen barrel component 2 is provided with a pen barrel thread matching the pen cap thread.

[0035] The nib 7 includes a nib rod 71, a spring mounting rod 72, and a nib tip 73 connected in sequence from top to bottom. The diameter of the nib rod 71 is larger than the diameter of the spring 6, the diameter of the spring mounting rod 72 is smaller than the diameter of the spring 6, the spring 6 is sleeved in the spring mounting rod 72, one end of the spring 6 is connected to the nib rod 71, and one end is connected to the pen cap component 1.

[0036] The outer side of the pen sleeve component 3 is further provided with a rotating push ring 34, which is more convenient and labor-saving.

[0037] A usage method of the rotary telescopic pen is as follows:

[0038] When the nib 7 needs to be extended, rotate the pen sleeve component 3 in the clockwise direction. The pen sleeve component 3 drives the inner sleeve component 4 to rotate in the clockwise direction. The clockwise rotation of the inner sleeve component 4 drives the pushing block 51 to move downward in the clockwise direction. At this time, the pushing component 5 moves downward, making the nib 7 gradually extend. When a clicking sound is heard, the pushing block 51 enters the extension fixing groove 432, completing the extension of the nib 7.

[0039] When the nib 7 needs to be retracted, rotate the pen sleeve component 3 in the counterclockwise direction. The pen sleeve component 3 drives the inner sleeve component 4 to rotate in the counterclockwise direction. The counterclockwise rotation of the inner sleeve component 4 drives the pushing block 51 to move upward in the counterclockwise direction. At this time, the pushing component 5 moves upward, making the nib 7 gradually retract. When a clicking sound is heard, the pushing block 51 enters the retraction fixing groove 431, completing the retraction of the nib 7.

[0040] The above-described embodiments are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A rotary telescopic pen, characterized in that: It includes a pen cap assembly, a pen barrel assembly, a pen sleeve assembly, an inner sleeve assembly, a pushing assembly, and a refill. The top of the pen barrel assembly is provided with a pen sleeve mounting portion. The outer wall of the pen sleeve mounting portion is provided with several circles of first trapezoidal convex rings. The inner wall of the pen sleeve assembly is provided with a pen barrel connecting portion. The pen barrel connecting portion is provided with several circles of first trapezoidal ring grooves that match the first trapezoidal convex rings. The pen sleeve mounting portion is rotatably connected to the pen barrel connecting portion. The inner wall of the pen sleeve mounting portion is provided with several circles of second trapezoidal convex rings. The inner sleeve assembly is provided with several circles of second trapezoidal ring grooves that match the second trapezoidal convex rings. The pen barrel assembly is rotatably connected to the inner sleeve assembly. The cross-sections of the first trapezoidal convex rings and the second trapezoidal convex rings are both right trapezoids. The cross-sections of the first trapezoidal ring grooves and the second trapezoidal ring grooves are both isosceles trapezoids. The inner sleeve assembly is rotatably and telescopically connected to the pushing assembly. The pushing assembly is connected to the refill. The refill passes through the pen cap assembly.

2. The retractable rotary pen according to claim 1, characterized in that: Above the pen barrel connecting portion in the pen sleeve assembly, there is also a first tooth engaging portion. The top of the inner sleeve assembly is provided with a second tooth engaging portion that matches the first tooth engaging portion. The first tooth engaging portion is engaged with the second tooth engaging portion. The inner sleeve assembly is also provided with a set of inclined threaded pushing grooves. Both the top and the bottom of the pushing grooves are provided with micro protrusions. A retracting fixing groove is formed at the top of the pushing groove, and an extending fixing groove is formed at the bottom of the pushing groove. The top of the pushing assembly is provided with two symmetric pushing blocks. The pushing blocks are installed in the pushing grooves.

3. A rotary telescopic pen according to claim 1, characterized in that: It also includes a spring. The spring is sleeved on the refill and abuts against the refill and the pen cap assembly.

4. A rotary telescopic pen according to claim 1, characterized in that: The bottom of the pushing assembly is provided with a refill engaging portion. The top of the refill is connected to the refill engaging portion.

5. A rotary telescopic pen according to claim 1, characterized in that: The pen cap assembly is provided with a pen cap thread. The bottom of the pen barrel assembly is provided with a pen barrel thread that matches the pen cap thread.

6. The retractable rotary pen according to claim 1, wherein: The outer side of the pen sleeve assembly is also provided with a rotating push ring.

7. A rotary telescopic pen according to claim 3, characterized in that: The refill includes a refill rod, a spring mounting rod, and a pen tip that are connected in sequence from top to bottom. The diameter of the refill rod is larger than the diameter of the spring. The diameter of the spring mounting rod is smaller than the diameter of the spring. The spring is sleeved in the spring mounting rod. One end of the spring is connected to the refill rod, and the other end is connected to the pen cap assembly.

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