Finger writing brush with contraction and storage functions

By designing an extension and retraction mechanism, and utilizing the cooperation of a slider, connecting rod, and spring, the finger brush can automatically extend and retract, solving the problems of complex operation and easy damage, and providing a convenient user experience and protection.

CN224028690UActive Publication Date: 2026-03-24SHANDONG JILU MUSEUM & CULTURE DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-08
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

Existing finger brushes are complex to operate during extension and retraction, are easily damaged, and require a high level of user proficiency, making them difficult for beginners to master quickly.

Method used

An extension mechanism and a retraction mechanism were designed. Through the cooperation of the slider and the connecting rod, the elastic force of the spring is used to realize the automatic extension and retraction of the brush, simplifying the operation steps. The design includes a sliding groove and a positioning groove to fix the brush body.

Benefits of technology

It enables easy extension and retraction of the brush, lowers the barrier to entry for use, protects the brush tip from damage during transport, and provides a convenient storage experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a finger writing brush with a contraction storage function, and relates to the technical field of finger writing brushes. The pen cap comprises a pen cap body, an extending mechanism and a contracting mechanism are arranged on the pen cap body, the extending mechanism comprises a connecting rod connected to the inner wall of the pen cap body in a sliding mode, and the bottom end of the connecting rod extends to the outside of the pen cap body. By means of the extending mechanism, when the writing brush needs to be used, a user holds the brush cap and pushes the limiting block to slide in the first sliding groove through fingers, and due to the fact that the sliding block is connected with the connecting rod, the connecting rod is driven to overcome the elastic force of the second spring, downwards extends out of the bottom of the brush cap and stretches the second spring. When the positioning block moves along with the connecting rod to be aligned with the positioning groove in the fixing sleeve, the positioning block is clamped into the positioning groove under the action of the first spring, the finger writing brush body is fixed to be in an extending state, and therefore a user can easily adjust the writing brush to be in a writing state, complex operation is not needed, and the use threshold is lowered.
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Description

Technical Field

[0001] This utility model belongs to the field of finger brush technology, and in particular relates to a finger brush with a retractable storage function. Background Technology

[0002] Finger brushes, as a unique writing tool, allow users to control them flexibly with their fingers, bringing a writing experience different from traditional brushes. They are small and portable, suitable for various scenarios. Whether it is daily writing practice or impromptu creation when out and about, they can meet the needs of calligraphy enthusiasts to write anytime and anywhere, and are loved by a wide range of calligraphy lovers.

[0003] In the current market for finger brushes, some finger brushes require complex operating procedures to extend and retract, and the slightest carelessness may cause damage to the parts. This not only consumes a lot of the user's time, but also requires a high level of operating proficiency, making it difficult for beginners to get started quickly. Therefore, we propose a new finger brush with a retractable and retractable function. Utility Model Content

[0004] The purpose of this invention is to provide a finger brush with a retractable storage function. It features an extension mechanism. Specifically, when the brush is needed, the user holds the brush cap and pushes the limiting block within the slide groove. Since the slider is connected to the connecting rod, the connecting rod overcomes the elasticity of the second spring, extending downwards from the bottom of the brush cap and stretching the second spring. When the positioning block moves with the connecting rod and aligns with the positioning groove on the fixed sleeve, under the action of the first spring, the positioning block engages with the positioning groove, fixing the main body of the finger brush in the extended state. This allows the user to easily adjust the brush to a writing position without complicated operations, lowering the barrier to entry and solving the problem that some finger brushes often require complex operating steps to extend and retract.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a finger brush with a retractable storage function, comprising a brush cap, wherein the brush cap is provided with an extension mechanism and a retraction mechanism.

[0007] The extension mechanism includes a connecting rod slidably connected to the inner wall of the pen sleeve. The bottom end of the connecting rod extends to the outside of the pen sleeve. A finger brush body is fixedly connected to the bottom end of the connecting rod. A brush tip is installed at the bottom end of the finger brush body. Two sliding grooves are formed on the outer wall of the pen sleeve. Two sliders are fixedly connected to the outer wall of the connecting rod. The side of each slider away from the connecting rod extends to the outside of the pen sleeve and is slidably connected to the corresponding sliding groove. A limiting block is fixedly connected to the side of each slider away from the connecting rod. Both limiting blocks are slidably connected to the outer wall of the pen sleeve. Anti-slip textures are provided on the side of each limiting block away from the pen sleeve. The retraction mechanism includes a spring fixedly connected to the top wall of the inner wall of the pen sleeve. The bottom end of the spring is fixedly connected to the connecting rod.

[0008] Furthermore, a fixing sleeve is fixedly connected to the outer wall of the pen cap, and two positioning grooves are formed on the inner wall of the fixing sleeve.

[0009] Furthermore, two sliding grooves are formed on the outer wall of the connecting rod, and springs are fixedly connected to the inner walls of the two sliding grooves that are close to each other.

[0010] Furthermore, each of the two springs is fixedly connected to a positioning block at one end that is far apart from each other, and the two positioning blocks extend to the corresponding slide groove and are slidably connected to the corresponding slide groove.

[0011] Furthermore, a top cover is installed at the top of the pen cap, and a hanging rope is fixedly connected to the top of the top cover.

[0012] Furthermore, the outer wall of the fixed sleeve has two sliding grooves three, both of which are connected to the corresponding sliding groove two, and the inner walls of both sliding grooves three are slidably connected to guide plates.

[0013] Furthermore, each of the two guide plates is fixedly connected to a sliding rod on the side closest to each other, and a spring is wound around the outer wall of each of the two sliding rods. Each of the two guide plates is fixedly connected to a pressing block at the end away from each other, and the end of each pressing block away from the corresponding guide plate extends to the outside of the fixed sleeve.

[0014] Furthermore, one end of each of the two springs is fixedly connected to the corresponding guide plate, and the other end of each of the two springs is fixedly connected to the inner wall of the corresponding slide groove.

[0015] This utility model has the following beneficial effects:

[0016] 1. By setting up an extension mechanism, specifically when the brush needs to be used, the user holds the brush cap and pushes the limiting block to slide in the slide groove one with their finger. Since the slider is connected to the connecting rod, it drives the connecting rod to overcome the elastic force of the spring two, extend downward from the bottom of the brush cap and stretch the spring two. When the positioning block moves with the connecting rod to align with the positioning groove on the fixed sleeve, under the action of the spring one, the positioning block is locked into the positioning groove, fixing the brush body in the extended state. This allows the user to easily adjust the brush to a writing state without complicated operations, reducing the threshold for use.

[0017] 2. By setting up a retraction mechanism, specifically, when it is necessary to retract the main body and tip of the finger brush, press the pressing block on the outer wall of the fixing sleeve. The pressing block drives the guide plate and the slide rod to slide in the slide groove three. The guide plate compresses the spring three, and the slide rod pushes the positioning block to overcome the elastic force of the spring one and exit from the positioning groove, so that the spring one returns to its initial state. At this time, the spring two resets and retracts under its own elastic potential energy. Under its pull, the connecting rod drives the main body and tip of the finger brush to retract into the pen sleeve to complete the storage, thereby protecting the pen tip from damage caused by collision and squeezing during carrying, extending the service life of the brush, and providing users with a convenient storage experience.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a front cross-sectional view of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of the pen cap of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the fixing sleeve of this utility model;

[0024] Figure 5 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0025] Figure 6 This utility model Figure 3 A magnified structural diagram of B in the diagram.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Pen cap; 2. Extension mechanism; 3. Retraction mechanism; 21. Connecting rod; 22. Finger brush body; 23. Pen tip; 24. Slide groove one; 25. Slider; 26. Limiting block; 27. Anti-slip texture; 28. Fixing sleeve; 29. ​​Positioning groove; 210. Slide groove two; 211. Spring one; 212. Positioning block; 213. Top cover; 214. Hanging rope; 31. Spring two; 32. Slide groove three; 33. Slide rod; 34. Guide plate; 35. Spring three; 36. Pressing block. Detailed Implementation

[0028] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-6As shown, this utility model is a finger brush with a retractable storage function, including a brush sleeve 1. The brush sleeve 1 is provided with an extension mechanism 2 and a retraction mechanism 3. The extension mechanism 2 includes a connecting rod 21 slidably connected to the inner wall of the brush sleeve 1. The bottom end of the connecting rod 21 extends to the outside of the brush sleeve 1. The bottom end of the connecting rod 21 is fixedly connected to the finger brush body 22. The bottom end of the finger brush body 22 is equipped with a brush tip 23. The outer wall of the brush sleeve 1 has two sliding grooves 24. The outer wall of the connecting rod 21 is fixedly connected to two sliders 25. The two sliders 25 are away from the connecting rod 21. Both sliders 25 extend to the outside of the pen sleeve 1 and slide in the corresponding groove 24. Limiting blocks 26 are fixedly connected to the side of each slider 25 away from the connecting rod 21. Both limiting blocks 26 slide in connection with the outer wall of the pen sleeve 1. Anti-slip textures 27 are provided on the side of each limiting block 26 away from the pen sleeve 1. The retraction mechanism 3 includes a second spring 31 fixedly connected to the inner top wall of the pen sleeve 1. The bottom end of the second spring 31 is fixedly connected to the connecting rod 21. A fixing sleeve 28 is fixedly connected to the outer wall of the pen sleeve 1. Two positioning grooves 29 are provided on the inner wall of the fixing sleeve 28. The connecting rod... Two grooves 210 are formed on the outer wall of the pen cap 1. A spring 211 is fixedly connected to the inner wall of the side of each groove 210 that is close to each other. A positioning block 212 is fixedly connected to the side of each spring 211 that is far from each other. The side of each positioning block 212 that is far from each other extends to the corresponding groove 210 and slides in connection with it. A top cover 213 is installed at the top of the pen cap 1. A hanging rope 214 is fixedly connected to the top of the top cover 213. Through the extension mechanism 2, specifically when the brush needs to be used, the user holds the pen cap. 1. The finger pushes the limiting block 26 to slide in the first groove 24. Since the slider 25 is connected to the connecting rod 21, the connecting rod 21 overcomes the elastic force of the second spring 31 and extends downward from the bottom of the pen sleeve 1, stretching the second spring 31. When the positioning block 212 moves with the connecting rod 21 to align with the positioning groove 29 on the fixed sleeve 28, under the action of the first spring 211, the positioning block 212 is inserted into the positioning groove 29, fixing the finger brush body 22 in the extended state. This allows the user to easily adjust the brush to a writing state without complicated operations, reducing the threshold of use.

[0030] The outer wall of the fixed sleeve 28 has two sliding grooves 32, both of which are connected to the corresponding sliding grooves 210. Guide plates 34 are slidably connected to the inner walls of both sliding grooves 32. Sliding rods 33 are fixedly connected to the sides of the two guide plates 34 that are close to each other. Springs 35 are wound around the outer walls of both sliding rods 33. Pressing blocks 36 are fixedly connected to the ends of the two guide plates 34 that are far from each other. The ends of the two pressing blocks 36 that are far from the corresponding guide plates 34 extend to the outside of the fixed sleeve 28. One end of each of the two springs 35 is fixedly connected to the corresponding guide plate 34, and the other end of each of the two springs 35 is fixedly connected to the inner wall of the corresponding sliding groove 32. A retraction mechanism 3 is specifically provided... When the main body 22 and tip 23 of the finger brush need to be retracted, press the pressing block 36 on the outer wall of the fixing sleeve 28. The pressing block 36 drives the guide plate 34 and the slide rod 33 to slide in the slide groove 32. The guide plate 34 compresses the spring 35. The slide rod 33 pushes the positioning block 212 to overcome the elastic force of the spring 1 211 and exit from the positioning groove 29, so that the spring 1 211 returns to its initial state. At this time, the spring 2 31 resets and retracts under its own elastic potential energy. Under its pull, the connecting rod 21 drives the main body 22 and tip 23 of the finger brush to retract into the pen sleeve 1 to complete the storage, thereby protecting the tip 23 from damage by collision and squeezing during carrying, extending the service life of the brush, and providing users with a convenient storage experience.

[0031] A specific application of this embodiment is as follows: When using the device, the user holds the pen cap 1 and pushes the limiting block 26 to slide in the first groove 24. Because the slider 25 is connected to the connecting rod 21, the connecting rod 21 overcomes the elastic force of the second spring 31 and extends downward from the bottom of the pen cap 1, causing the second spring 31 to stretch. When the positioning block 212 moves with the connecting rod 21 to align with the positioning groove 29 on the fixed sleeve 28, the positioning block 212 is engaged in the positioning groove 29 under the action of the first spring 211. At this time, the finger brush body 22 is fixed in the extended state and can be used for writing. The first spring 211 is in a compressed state in the initial state when the positioning block 212 is not aligned with the positioning groove 29. At the same time, the anti-slip texture 27 on the slider 25 increases the friction when pushing the limiting block 26, making the limiting block 26 easier to push.

[0032] When the main body 22 and tip 23 of the finger brush need to be retracted, press the pressing block 36 on the outer wall of the fixing sleeve 28. The pressing block 36 drives the guide plate 34 and the slide rod 33 to slide in the slide groove 32. At the same time, the guide plate 34 compresses the spring 35. When the slide rod 33 moves, it pushes the positioning block 212 to overcome the elastic force of the spring 1 211 and exit from the positioning groove 29, so that the spring 1 211 returns to its initial state. When the positioning block 212 exits from the positioning groove 29, the spring 2 31 returns to its original state under its own elastic potential energy. Thus, under the pulling force of the spring 2 31, the connecting rod 21 drives the main body 22 and tip 23 of the finger brush to retract into the pen sleeve 1 to complete the storage. In addition, the hanging rope 214 on the top of the top cover 213 makes it convenient to carry the brush.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A finger brush with a retractable storage function, characterized in that: Includes a pen cap (1), on which an extension mechanism (2) and a retraction mechanism (3) are provided; The extension mechanism (2) includes a connecting rod (21) slidably connected to the inner wall of the pen sleeve (1). The bottom end of the connecting rod (21) extends to the outside of the pen sleeve (1). The bottom end of the connecting rod (21) is fixedly connected to the body of a finger brush (22). The bottom end of the body of the finger brush (22) is equipped with a brush tip (23). The outer wall of the pen sleeve (1) has two sliding grooves (24). The outer wall of the connecting rod (21) is fixedly connected to two sliders (25). The two sliders (25) are located on the side away from the connecting rod (21). Extending to the outside of the pen cap (1) and slidably connected to the corresponding slide groove (24), the two sliders (25) are fixedly connected to the side away from the connecting rod (21) with limit blocks (26), the two limit blocks (26) are slidably connected to the outer wall of the pen cap (1), and the two limit blocks (26) are provided with anti-slip texture (27) on the side away from the pen cap (1). The shrinking mechanism (3) includes a second spring (31) fixedly connected to the inner top wall of the pen cap (1), and the bottom end of the second spring (31) is fixedly connected to the connecting rod (21).

2. The finger brush with retractable storage function according to claim 1, characterized in that, The outer wall of the pen cap (1) is fixedly connected to a fixing sleeve (28), and the inner wall of the fixing sleeve (28) has two positioning grooves (29).

3. The finger brush with retractable storage function according to claim 2, characterized in that, The outer wall of the connecting rod (21) has two sliding grooves (210), and the inner wall of the two sliding grooves (210) that are close to each other is fixedly connected with a spring (211).

4. The finger brush with retractable storage function according to claim 3, characterized in that, The two springs (211) are fixedly connected to a positioning block (212) at their opposite ends. The opposite sides of the two positioning blocks (212) extend to the corresponding slide groove (210) and are slidably connected to the corresponding slide groove (210).

5. The finger brush with retractable storage function according to claim 4, characterized in that, The top of the pen cap (1) is fitted with a top cover (213), and a hanging rope (214) is fixedly connected to the top of the top cover (213).

6. The finger brush with retractable storage function according to claim 5, characterized in that, The outer wall of the fixed sleeve (28) has two sliding grooves (32), both of which are connected to the corresponding sliding grooves (210), and the inner walls of both sliding grooves (32) are slidably connected to guide plates (34).

7. The finger brush with retractable storage function according to claim 6, characterized in that, Each of the two guide plates (34) is fixedly connected to a slide rod (33) on the side that is close to each other. The outer walls of the two slide rods (33) are wrapped with springs (35). Each of the two guide plates (34) is fixedly connected to a pressing block (36) on the side that is far from each other. The ends of the two pressing blocks (36) that are far from the corresponding guide plates (34) extend to the outside of the fixing sleeve (28).

8. The finger brush with retractable storage function according to claim 7, characterized in that, One end of each of the two springs (35) is fixedly connected to the corresponding guide plate (34), and the other end of each of the two springs (35) is fixedly connected to the inner wall of the corresponding slide groove (32).