Nail care liquid bottle with brush head convenient to replace

By designing adjustment and connection cavities on the nail polish bottle cap, and utilizing the cooperation of elastic sheet and fixed cap, the problems of brush head wear and drying are solved, enabling the brush head to be detachable and replaceable, thus reducing usage costs.

CN224125433UActive Publication Date: 2026-04-17ZHEJIANG CLEO PLASTIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG CLEO PLASTIC CO LTD
Filing Date
2025-05-06
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Nail polish brushes are prone to wear and tear and drying out if used frequently and not cleaned in a timely manner, making it impossible to disassemble and replace the brush separately, thus increasing the cost of use.

Method used

A nail polish bottle with easy-to-replace brush head was designed. By setting an adjustment cavity and a connection cavity on the bottle cap, and using the cooperation of an elastic sheet and a fixing cap, the brush handle can be detached and fixed, making it convenient to replace the brush head.

Benefits of technology

The brush head is detachable and replaceable, reducing usage costs and increasing the reusability of the bottle cap.

✦ Generated by Eureka AI based on patent content.

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Abstract

The manicure liquid bottle comprises a bottle cap, an adjusting cavity and a connecting cavity are formed in the upper end and the lower end of the bottle cap respectively, a receding hole is formed in the bottom of the adjusting cavity and communicated with the connecting cavity, a plurality of elastic pieces are arranged on the peripheral side of the receding hole at intervals, and a bottle body is connected into the connecting cavity. The fixing cover is in threaded connection with the interior of the adjusting cavity, a conical fixing cavity is formed in the bottom face of the fixing cover, and the elastic piece extends into the fixing cavity; the top end of the brush rod penetrates through the receding hole and extends into the fixing cavity, and bristles are arranged at the bottom end of the brush rod. According to the product, the contact between the fixing cavity and the elastic piece is changed by controlling the fixing cover to move up and down, when the fixing cover moves downwards, the conical cavity wall of the fixing cavity drives the top end of the elastic piece to get close inwards, the brush rod is clamped and fixed through the elastic piece, and the fixing cover is screwed out outwards, so that fixing of the brush rod can be relieved, and a user can replace the brush head; and the bottle cap can be repeatedly used, so that the use cost is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of cosmetic bottles, and in particular to a nail polish bottle with an easy-to-replace brush head. Background Technology

[0002] Nail polish is mainly used for nail beauty. Users apply the nail polish to their nails using the nail polish brush on the bottle cap. The frequent contact between the brush and the nail will accelerate wear and tear, especially in nail salons where the brushes are used frequently, causing the bristles to wear out quickly. In addition, if the brushes are not cleaned in time, the nail polish will dry and harden on the bristles. However, nail polish brushes and bottle caps are mostly not detachable, so users need to replace the bottle cap as well when replacing the brush, which increases the cost of use. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a nail polish bottle that facilitates brush head replacement.

[0004] The technical solution adopted by this utility model is: a nail liquid bottle that is easy to replace the brush head, including a bottle cap, an adjustment cavity and a connecting cavity respectively provided at the upper and lower ends of the bottle cap, a clearance hole provided at the bottom of the adjustment cavity, the clearance hole communicating with the connecting cavity, a number of elastic pieces spaced apart on the periphery of the clearance hole, and a bottle body connected inside the connecting cavity.

[0005] A fixed cover is threaded into the adjusting cavity, and a tapered fixed cavity is provided on the bottom surface of the fixed cover, into which the elastic sheet extends;

[0006] The brush rod has its top end extending into the fixing cavity through the relief hole, the top end of the elastic sheet abutting against the peripheral side of the brush rod, and the bottom end of the brush rod is provided with bristles.

[0007] Furthermore, a positioning groove is provided on the bottom surface of the fixed cover, and a spring is provided in the positioning groove. The two ends of the spring abut against the positioning groove and the adjustment cavity, respectively.

[0008] Furthermore, the top end of the brush rod is provided with several annular grooves at intervals, and the top end of the elastic sheet abuts in the annular grooves.

[0009] Furthermore, a fixing groove is provided on the top surface of the fixing cavity, and the top end of the brush rod is engaged in the fixing groove.

[0010] Furthermore, the clearance hole is located at the center of the adjustment cavity, and the fixing cavity is coaxially arranged with the clearance hole.

[0011] Furthermore, the top of the fixed cover is provided with a positioning edge, which abuts against the opening of the adjustment cavity, and the side of the positioning edge is provided with several anti-slip grooves.

[0012] Compared with the prior art, this utility model has the following beneficial effects:

[0013] This invention changes the contact between the fixing cavity and the elastic sheet by moving the fixing cap up and down. When the fixing cap moves downward, the conical cavity wall of the fixing cavity drives the top of the elastic sheet to move inward, and the brush rod is clamped and fixed by the elastic sheet. When the fixing cap is rotated outward, the fixing of the brush rod can be released, and the user can replace the brush head, making the bottle cap reusable and reducing the cost of use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a first schematic diagram of the exploded structure of this utility model;

[0016] Figure 2 This is a second schematic diagram of the explosive structure of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 4 This is a schematic diagram of the overall structure of this utility model;

[0019] The utility model reference information is as follows:

[0020] 1. Bottle cap; 11. Adjustment cavity; 111. Clearance hole; 112. Elastic sheet; 12. Connecting cavity; 2. Fixing cap; 21. Fixing cavity; 211. Fixing groove; 22. Positioning groove; 23. Positioning edge; 3. Brush rod; 31. Brush bristles; 32. Annular groove; 4. Bottle body;

[0021] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] 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.

[0023] This utility model proposes a nail polish bottle with an easy-to-replace brush head, including a bottle cap 1, see reference. Figure 1 , 2 The bottle cap 1 has an adjustment cavity 11 and a connecting cavity 12 at its upper and lower ends, respectively. The bottom of the adjustment cavity 11 has a clearance hole 111, which communicates with the connecting cavity 12. Several elastic pieces 112 are spaced apart around the clearance hole 111. The connecting cavity 12 is fixedly connected to the bottle body 4. A fixing cap 2 is threaded into the adjustment cavity 11. The bottom surface of the fixing cap 2 has a conical fixing cavity 21, into which the elastic pieces 112 extend. A brush rod 3 has its top end passing through the clearance hole 111 and extending into the fixing cavity 21. The bottom end of the brush rod 3 has bristles 31. For assembly, refer to... Figure 3 As the fixing cover 2 is gradually screwed into the adjustment cavity 11, the elastic piece 112 gradually moves inward under the action of the inclined cavity wall of the fixing cavity 21 until the top of the elastic piece 112 abuts against the peripheral side of the brush rod 3. The position of the brush rod 3 is fixed by the elastic piece 112. Correspondingly, the user can unscrew the fixing cover 2 outward to release the fixing of the brush rod 3 and replace it.

[0024] Referring to 2, the bottom surface of the fixed cover 2 is provided with a positioning groove 22, and a spring is provided in the positioning groove 22. The two ends of the spring abut against the positioning groove 22 and the adjustment cavity 11 respectively. When the fixed cover 2 is screwed into the adjustment cavity 11, the compressed spring generates an upward thrust on the fixed cover 2, making the threaded connection between the fixed cover 2 and the adjustment cavity 11 tighter and preventing the fixed cover 2 from coming off during use.

[0025] See Figure 2 , 3 The top end of the brush rod 3 is provided with several annular grooves 32 at intervals, and the top end of the elastic sheet 112 abuts against the annular grooves 32, thereby improving the fixing effect of the elastic sheet 112 on the brush rod 3.

[0026] See Figure 2 The top surface of the fixed cavity 21 is provided with a fixing groove 211. During assembly, the top end of the brush rod 3 first extends into the fixing groove 211 to achieve initial positioning of the brush rod 3, which facilitates subsequent operations.

[0027] Preferably, the clearance hole 111 is located at the center of the adjustment cavity 11, and the fixing cavity 21 is coaxially arranged with the clearance hole 111.

[0028] See Figure 2 , 4The top of the fixed cover 2 is provided with a positioning edge 23. When assembled, the positioning edge 23 abuts against the opening of the adjustment cavity 11. Several anti-slip grooves are provided on the side of the positioning edge 23. The anti-slip grooves are used to increase friction and facilitate the user to rotate the fixed cover 2.

[0029] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions that fall within the scope of the present utility model are protected by the present utility model.

Claims

1. A nail polish bottle facilitating replacement of a brush head, characterized by: include The bottle cap has an adjustment cavity and a connecting cavity at its upper and lower ends, respectively. The bottom of the adjustment cavity has a clearance hole that communicates with the connecting cavity. Several elastic pieces are spaced around the periphery of the clearance hole. The bottle body is connected inside the connecting cavity. A fixed cover is threaded into the adjusting cavity, and a tapered fixed cavity is provided on the bottom surface of the fixed cover, into which the elastic sheet extends; The brush rod has its top end extending into the fixing cavity through the relief hole, the top end of the elastic sheet abutting against the peripheral side of the brush rod, and the bottom end of the brush rod is provided with bristles.

2. The nail polish bottle with a replaceable brush head according to claim 1, wherein: The bottom surface of the fixed cover is provided with a positioning groove, and a spring is provided in the positioning groove. The two ends of the spring abut against the positioning groove and the adjustment cavity, respectively.

3. The nail polish bottle with a replaceable brush head of claim 1, wherein: The top of the brush rod is provided with several annular grooves at intervals, and the top of the elastic sheet abuts in the annular grooves.

4. The nail polish bottle with a replaceable brush head of claim 1, wherein: The top surface of the fixed cavity is provided with a fixing groove, and the top end of the brush rod is engaged in the fixing groove.

5. The nail polish bottle with a replaceable brush head of claim 1, wherein: The clearance hole is located at the center of the adjustment cavity, and the fixing cavity is coaxially arranged with the clearance hole.

6. The nail polish bottle with a replaceable brush head of claim 1, wherein: The top of the fixed cover is provided with a positioning edge, which abuts against the opening of the adjustment cavity, and the side of the positioning edge is provided with several anti-slip grooves.