Refill rotary positioning device

Abstract

The utility model discloses a refill rotary positioning device, and particularly relates to the technical field of refill rotary positioning, which comprises a refill main body, a fixing sleeve is sleeved on the outer wall of the refill main body, a shell is sleeved on the outer side of the fixing sleeve, the top end of the shell is in threaded connection with a threaded cover, a rotary positioning component is arranged on the fixing sleeve, and the rotary positioning component is connected with the refill main body. The rotary positioning assembly comprises a rotating block and a positioning ring plate, a lead screw is fixedly arranged at the bottom end of the rotating block, the outer wall of the lead screw is in threaded connection with a nut block connected with the fixing sleeve, and a plurality of limiting plates are fixedly arranged at the top of the positioning ring plate. The lead screw is driven to rotate through the rotating block, the nut block on the lead screw drives the fixing sleeve and the refill body in the fixing sleeve to ascend and descend together, stretching and retracting of the refill body are achieved, meanwhile, positioning and limiting are conducted through the positioning annular plate and the limiting plate, and therefore the stability of the refill body can be improved; the shell and the threaded cover can wrap the refill and the rotary positioning assembly, and the service life of the refill and the rotary positioning assembly can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pen refill rotation positioning technology, and more specifically to a pen refill rotation positioning device. Background Technology

[0002] The refill is the core component of a writing pen, typically consisting of ink, a barrel, and a nib, used for writing. The ink in the refill flows out through a ball bearing at the nib, leaving a mark on the paper. Most modern writing pens use a press-to-extend mechanism to extend the refill from the outer casing. This mechanism is usually controlled by axial pressing, and the press head moves back and forth with each press. The press head is located at the top of the pen; the user presses the press head with their finger to extend the refill for writing.

[0003] Furthermore, there are also methods that use rotation to adjust the extension and retraction of the pen refill. For example, there is a pen refill rotation device with the prior art publication number CN222591074U. This utility model achieves the extension and retraction of the pen refill through the rotation between the pen tube and the pen refill sleeve, and under the action of the sliding column and the positioning groove. It changes the traditional axial pressing drive to a circumferential rotation drive. The pen tube and the pen refill sleeve can achieve the extension and retraction of the pen refill while the pen tube also serves as a support for the hand holding part of the writing pen, playing a dual role and having a high degree of structural compactness.

[0004] However, the existing technology described above still has the following problems in use: since the extension and retraction of the pen refill is achieved by rotating the pen tube, the user's fingers tend to rotate the pen tube when holding it while writing, which not only affects the stability of the pen refill but also the smoothness of writing. Based on this, the present invention provides a pen refill rotation positioning device. Utility Model Content

[0005] To overcome the aforementioned deficiencies in the prior art, this utility model provides a pen refill rotation positioning device. A rotating block drives a lead screw to rotate, and a nut block on the lead screw drives a fixed sleeve and the pen refill body inside the fixed sleeve to rise and fall together, thereby realizing the extension and retraction of the pen refill body. At the same time, a positioning ring plate and a limiting plate are used for positioning and limiting, which can improve the stability of the pen refill body. Furthermore, the outer shell and threaded cap can enclose the pen refill and the rotation positioning component, which can extend the service life of both, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pen refill rotation positioning device, comprising a pen refill body, a fixing sleeve fitted on the outer wall of the pen refill body, an outer shell fitted on the outer side of the fixing sleeve, a threaded cap threaded to the top of the outer shell, a rotation positioning assembly on the fixing sleeve, the rotation positioning assembly comprising a rotating block and a positioning ring plate, a lead screw fixedly mounted at the bottom of the rotating block, a nut block threadedly connected to the outer wall of the lead screw and connected to the fixing sleeve, a plurality of limiting plates fixedly mounted at the top of the positioning ring plate, and limiting grooves of the same number as the limiting plates being formed on the outer surface of the nut block and the outer surface of the fixing sleeve, the plurality of limiting plates being respectively disposed in the plurality of limiting grooves, the limiting plates being used to limit the movement of the nut block and the fixing sleeve up and down, thereby improving the stability of the pen refill body.

[0007] In a preferred embodiment, the top of the fixing sleeve has a circular hole corresponding to the lead screw, and the diameter of the circular hole is larger than the diameter of the threaded hole at the bottom of the nut block. The circular hole is provided to accommodate the lead screw during the adjustment of the pen refill body height, so as to prevent the fixing sleeve from obstructing the adjustment of the pen refill body height.

[0008] In a preferred embodiment, the top of the threaded cap is provided with a circular groove, and the rotating block is disposed in the circular groove. The circular groove accommodates the rotating block, which can improve the stability of the rotating block during rotation.

[0009] In a preferred embodiment, the outer wall of the rotating block is fixedly provided with a plurality of protrusions arranged in a ring array. The plurality of protrusions are integrally formed with the rotating block. The plurality of protrusions can increase the friction of the outer wall of the rotating block and prevent the user from slipping when rotating the rotating block. Each protrusion is provided above the circular groove to avoid the protrusion from contacting the inner wall of the circular groove and increasing the resistance of the rotating block.

[0010] In a preferred embodiment, multiple limiting plates are arranged in a ring array on the top of the positioning ring plate. The top of the limiting plates is connected to the inner wall of the threaded cover. When the threaded cover is removed, multiple limiting plates and a positioning ring plate can be taken out of the outer shell together, making it convenient for the user to replace the pen refill.

[0011] In a preferred embodiment, a mounting hole communicating with a circular groove is provided on one side of the top of the outer shell. A pin is fixedly provided inside the mounting hole. A slot is machined on the outer wall of the rotating block. One end of the pin is inserted into the slot. The pin is used to reinforce the rotating block to prevent the rotating block from loosening and affecting the stability of the pen refill body.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] This invention uses a rotating block to drive a lead screw to rotate, and a nut block on the lead screw drives a fixed sleeve and the pen refill body inside the fixed sleeve to rise and fall together, realizing the extension and retraction of the pen refill body. At the same time, positioning ring plate and limiting plate are used for positioning and limiting, which can improve the stability of the pen refill body. Furthermore, the outer shell and threaded cap can wrap the pen refill and the rotating positioning component, which can extend the service life of both. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the outer shell of this utility model;

[0016] Figure 3 This is a cross-sectional view of the rotating block and threaded cover of this utility model;

[0017] Figure 4 This is a partial cross-sectional view of the present invention;

[0018] Figure 5 This is a schematic diagram of the fixing sleeve of this utility model.

[0019] The attached figures are labeled as follows: 1. Pen refill body; 2. Fixing sleeve; 3. Outer shell; 4. Threaded cap; 5. Rotary positioning component; 6. Round hole; 7. Circular groove; 8. Raised strip; 9. Mounting hole; 10. Pin; 11. Slot;

[0020] 51. Rotating block; 52. Positioning ring plate; 53. Lead screw; 54. Nut block; 55. Limiting plate; 56. Limiting groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Refer to the instruction manual appendix Figures 1-5 This utility model provides a pen refill rotation positioning device, including a pen refill body 1, a fixing sleeve 2 sleeved on the outer wall of the pen refill body 1, an outer shell 3 sleeved on the outer side of the fixing sleeve 2, a threaded cap 4 threadedly connected to the top of the outer shell 3, a rotation positioning component 5 provided on the fixing sleeve 2, the rotation positioning component 5 including a rotating block 51 and a positioning ring plate 52, a lead screw 53 fixedly provided at the bottom end of the rotating block 51, and a nut block 54 threadedly connected to the fixing sleeve 2 on the outer wall of the lead screw 53.

[0023] Multiple limiting plates 55 are fixedly provided on the top of the positioning ring plate 52. The multiple limiting plates 55 are arranged in a ring array on the top of the positioning ring plate 52. The top of the limiting plate 55 is connected to the inner wall of the threaded cover 4. The outer wall surface of the nut block 54 and the outer wall surface of the fixing sleeve 2 are provided with the same number of limiting grooves 56 as the limiting plates 55. The multiple limiting plates 55 are respectively provided in the multiple limiting grooves 56. The limiting plates 55 can play a limiting role when the nut block 54 and the fixing sleeve 2 move up and down, thereby improving the stability of the pen refill body 1.

[0024] The top of the fixing sleeve 2 has a circular hole 6 corresponding to the lead screw 53, and the diameter of the circular hole 6 is larger than the diameter of the threaded hole at the bottom of the nut block 54. The circular hole 6 is provided to accommodate the lead screw 53 during the adjustment of the height of the pen refill body 1, so as to prevent the fixing sleeve 2 from obstructing the adjustment of the height of the pen refill body 1.

[0025] The threaded cap 4 has a circular groove 7 at its top end, and the rotating block 51 is located in the circular groove 7. The circular groove 7 accommodates the rotating block 51, which can improve the stability of the rotating block 51 when it rotates.

[0026] In actual use, the user rotates the rotating block 51 to drive the lead screw 53 to rotate. The nut block 54 on the lead screw 53 moves downward under the restriction of multiple limiting plates 55, which at the same time drives the fixing sleeve 2 and the pen refill body 1 inside the fixing sleeve 2 to move downward together, so that the pen refill body 1 can be extended. Then, when the bottom of the fixing sleeve 2 abuts against the top of the positioning ring plate 52, the rotating block 51 can no longer rotate due to the restriction of the positioning ring plate 52, which means that the pen refill body 1 has been moved out into place. Then the user can hold the outer shell 3 to write. After writing, the user rotates the rotating block 51 in the opposite direction to screw the pen refill body 1 back into the outer shell 3, so as to avoid the pen tip at the bottom of the pen refill body 1 from being leaked out and damaged. When the pen ink in the pen refill body 1 is used up, the user unscrews the threaded cap 4 from the outer shell 3 to pull out the pen refill body 1 for replacement.

[0027] Refer to the instruction manual appendix Figures 1-5 The outer wall of the rotating block 51 is fixed with a plurality of protrusions 8 arranged in a ring array. The plurality of protrusions 8 are integrally formed with the rotating block 51. The plurality of protrusions 8 can increase the friction of the outer wall of the rotating block 51 and prevent the user from slipping when rotating the rotating block 51. Each protrusion 8 is located above the circular groove 7 to avoid the protrusion 8 from contacting the inner wall of the circular groove 7 and increasing the resistance of the rotating block 51.

[0028] like Figure 4 As shown, a mounting hole 9 communicating with a circular groove 7 is also provided on one side of the top of the outer shell 3. A pin 10 is fixedly provided inside the mounting hole 9. A slot 11 is machined on the outer wall of the rotating block 51. One end of the pin 10 is inserted into the slot 11.

[0029] By setting a pin 10 on the outer shell 3, when the pen refill body 1 is adjusted to the position, the pin 10 is inserted into the slot 11 to fix the rotating block 51, so as to prevent the rotating block 51 from being shaken by collision and affecting the stability of the pen refill body 1. At the same time, when the pen refill body 1 is screwed back into the outer shell 3, the pin 10 is also used to fix it, thereby improving the stability of the pen refill body 1.

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pen refill rotation positioning device, comprising a pen refill body (1), characterized in that: The pen refill body (1) is fitted with a fixing sleeve (2) on its outer wall, and a shell (3) is fitted on the outside of the fixing sleeve (2). The top of the shell (3) is threadedly connected with a threaded cap (4). The fixed sleeve (2) is provided with a rotary positioning component (5), which includes a rotating block (51) and a positioning ring plate (52). The bottom end of the rotating block (51) is fixed with a lead screw (53), and the outer wall of the lead screw (53) is threaded with a nut block (54) connected to the fixed sleeve (2). The top of the positioning ring plate (52) is fixed with multiple limiting plates (55). The outer wall surface of the nut block (54) and the outer wall surface of the fixing sleeve (2) are provided with the same number of limiting grooves (56) as the limiting plates (55). The multiple limiting plates (55) are respectively located in the multiple limiting grooves (56).

2. The pen refill rotation positioning device according to claim 1, characterized in that: The top of the fixed sleeve (2) is provided with a round hole (6) corresponding to the lead screw (53), and the diameter of the round hole (6) is larger than the diameter of the threaded hole at the bottom of the nut block (54).

3. The pen refill rotation positioning device according to claim 1, characterized in that: The top of the threaded cap (4) is provided with a circular groove (7), and the rotating block (51) is located in the circular groove (7).

4. The pen refill rotation positioning device according to claim 3, characterized in that: The outer wall of the rotating block (51) is fixed with a plurality of protrusions (8) arranged in a ring array. Each protrusion (8) is located above the circular groove (7), and the plurality of protrusions (8) are integrally formed with the rotating block (51).

5. The pen refill rotation positioning device according to claim 1, characterized in that: Multiple limiting plates (55) are arranged in a ring array on the top of the positioning ring plate (52), and the top of the limiting plates (55) is connected to the inner wall of the threaded cover (4).

6. The pen refill rotation positioning device according to claim 3, characterized in that: The top side of the outer shell (3) is provided with a mounting hole (9) that communicates with the circular groove (7). A pin (10) is fixedly provided inside the mounting hole (9). A slot (11) is machined on the outer wall of the rotating block (51). One end of the pin (10) is inserted into the slot (11).

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