Electric nail clippers

By directly mounting the drive assembly and using a multi-stage gear transmission structure within the inner shell of the electric nail clipper, the problems of low assembly efficiency and high cost are solved, resulting in a more efficient and stable nail trimming effect.

CN224234901UActive Publication Date: 2026-05-15SHENZHEN SHENLI WEIYE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN SHENLI WEIYE TECH CO LTD
Filing Date
2025-05-16
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

Existing electric nail clippers have low assembly efficiency and high cost, and poor concentricity during gear transmission, resulting in poor stability.

Method used

The design adopts an inner shell, in which the drive assembly is directly installed, eliminating the gearbox protective sleeve. By setting a mounting groove on the inner shell, the drive assembly is directly connected to the cutter head. A multi-stage gear transmission structure is adopted, including a motor, a driving gear, a first drive gear set, a second drive gear set, and a driven gear, to ensure concentric and coaxial transmission.

Benefits of technology

It improves assembly efficiency, reduces production costs and space requirements, and enhances the stability of gear transmission, resulting in more efficient and comfortable nail trimming.

✦ Generated by Eureka AI based on patent content.

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Abstract

The electric nail clipper comprises an outer shell, an inner shell, a driving assembly and a clipper head, the clipper head is connected with the driving assembly, a mounting groove is formed in the inner shell, a battery, a main board and a switch key are further arranged in the inner shell, the battery is electrically connected with the main board, the switch key is arranged on the main board and controls a switch of the driving assembly, the clipper head comprises a clipper cylinder and a hobbing cutter arranged in the clipper cylinder, and the hobbing cutter is arranged in the inner shell. A knife edge hole is formed in one side of the knife cylinder, and a connecting column is arranged at one end of the hob and connected with the driving assembly. The driving assembly comprises a motor, a driving gear, a first driving gear set, a second driving gear set and a driven gear, an output shaft of the motor is connected with the driving gear, the driving gear is sequentially meshed with the first driving gear set, the second driving gear set and the driven gear, and the driven gear is connected with the connecting column. According to the electric nail clipper, the inner shell is provided with the mounting groove for placing the driving assembly and the clipper head, so that the driving assembly is directly mounted in the inner shell, the processing cost is reduced, and the assembling efficiency is improved.
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Description

Technical Field

[0001] This utility model relates to the field of electric nail clipper technology, and in particular to an electric nail clipper. Background Technology

[0002] Nail clippers are an essential tool for trimming nails. Traditional nail clippers are mostly manual, which is laborious and unsafe to use. Therefore, electric nail clippers have emerged on the market, which can trim nails quickly. However, existing electric nail clippers have a protective cover on the outside of the drive structure. During assembly, the drive component is first wrapped in the protective cover and then installed inside the nail clipper shell. This results in low production and assembly efficiency, high cost, and space occupation. Moreover, the gear transmission has poor concentricity and stability. Therefore, there is an urgent need for a new type of electric nail clipper to solve the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide an electric nail clipper to solve the technical problems of low assembly efficiency, high cost, space occupation, and poor concentricity during gear transmission in existing electric nail clippers.

[0004] This utility model discloses an electric nail clipper, comprising a shell, an inner shell, a drive assembly disposed within the inner shell, and a cutting head. The cutting head is connected to the drive assembly. The inner shell has a mounting groove adapted to the drive assembly and the cutting head. The inner shell also contains a battery, a main board, and a power switch. The battery is electrically connected to the main board, and the power switch is located on the main board and controls the switching of the drive assembly. The cutting head includes a blade barrel and a roller blade disposed within the blade barrel. One side of the blade barrel has a cutting edge hole, and one end of the roller blade has a connecting post connected to the drive assembly. The drive assembly includes a motor, a drive gear, a first drive gear set, a second drive gear set, and a driven gear. The output shaft of the motor is connected to the drive gear. The drive gear meshes sequentially with the first drive gear set, the second drive gear set, and the driven gear. The driven gear is connected to the connecting post.

[0005] Preferably, the outer shell includes an upper shell and a lower shell, the inner shell includes a front shell and a rear shell, the drive assembly is disposed between the front shell and the rear shell, the front shell is provided with a chip discharge bin, a movable plate is hinged to the outside of the chip discharge bin, the chip discharge bin is connected to the chip discharge port of the cutter head, and the rear shell is provided with a hole adapted to the on / off switch.

[0006] Preferably, the upper shell and the lower shell are sleeved together, and the front shell and the rear shell are snapped together.

[0007] Preferably, there is one or two cutting edge holes, and the cutting edge holes are arc-shaped or square.

[0008] Preferably, the first drive gear set and the second drive gear set have the same structure, including a large gear, a small gear and a connecting shaft. The connecting shaft passes through the center of the large gear and the small gear. The large gear and the small gear are coaxial. The driving gear meshes with the large gear of the first drive gear set, the small gear of the first drive gear set meshes with the large gear of the second drive gear set, and the small gear of the second drive gear set meshes with the driven gear.

[0009] Preferably, a UV lamp is also provided at the bottom of the inner shell.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This electric nail clipper includes a shell, an inner shell, a drive assembly, and a blade. The outer shell encloses the inner shell for protection, while the drive assembly, located within the inner shell, drives the blade. A mounting slot on the inner shell allows the drive assembly to be directly installed inside, eliminating the need for a separate gearbox protective cover, saving processing costs and installation space, and improving assembly efficiency. Furthermore, it ensures concentric and coaxial transmission of the drive assembly's gears, resulting in better stability. Inside the inner shell are a battery, a main board, and a power switch. The battery provides power to the electric nail clipper, while the main board and power switch control its operation. The drive assembly, primarily used to rotate the blade to trim nails, consists of a motor, a drive gear, a first drive gear set, a second drive gear set, and a driven gear connected in sequence. During operation, the motor drives the drive gear, the first drive gear set, the second drive gear set, and the driven gear to rotate, which in turn rotates the blade, ensuring more efficient and comfortable nail trimming via electric operation. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 This is a schematic diagram of the split structure of an embodiment of an electric nail clipper according to this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of an embodiment of an electric nail clipper according to this utility model;

[0015] Figure 3 This is a schematic diagram of the installation structure of the front shell and drive assembly of an embodiment of an electric nail clipper according to this utility model;

[0016] Figure 4 This is a three-dimensional structural diagram of an embodiment of an electric nail clipper according to the present invention.

[0017] In the diagram: 1. Outer shell; 11. Upper shell; 12. Lower shell; 2. Inner shell; 20. Mounting slot; 21. Front shell; 22. Rear shell; 23. Chip discharge bin; 24. Movable plate; 25. Hole; 3. Drive assembly; 31. Motor; 32. Drive gear; 33. First drive gear set; 331. Large gear; 332. Small gear; 333. Connecting shaft; 34. Second drive gear set; 35. Driven gear; 4. Cutting head; 41. Cutting barrel; 42. Cutting edge hole; 43. Connecting column; 5. Battery; 6. Main board; 7. Power switch. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] like Figure 1-4 As shown, this utility model discloses an electric nail clipper, comprising a shell 1, an inner shell 2, a drive assembly 3 disposed within the inner shell, and a blade head 4. The blade head 4 is connected to the drive assembly 3. The inner shell 2 is provided with a mounting groove 20 adapted to the drive assembly 3 and the blade head 4. The inner shell 2 also contains a battery 5, a main board 6, and a switch 7. The battery 5 is electrically connected to the main board 6. The switch 7 is disposed on the main board 6 and controls the switching of the drive assembly 3. The blade head 4 includes a blade barrel 41 and a roller blade disposed within the blade barrel. A blade hole 42 is provided on one side of the blade barrel 41 along its length direction. A connecting post 43 is provided at one end of the roller blade and is connected to the drive assembly 3. The drive assembly 3 includes a motor 31, a drive gear 32, a first drive gear set 33, a second drive gear set 34, and a driven gear 35. The output shaft of the motor 31 is connected to the drive gear 32. The drive gear 32 meshes with the first drive gear set 33, the second drive gear set 34, and the driven gear 35 in sequence. The driven gear 35 is connected to the connecting post 43.

[0020] This utility model discloses an electric nail clipper, comprising a shell 1, an inner shell 2, a drive assembly 3, and a blade head 4. The shell 1 encloses the inner shell 2, providing protection. The drive assembly 3 is housed within the inner shell 2 and drives the blade head. By providing mounting slots 20 on the inner shell 2 for placing the drive assembly 3 and the blade head 4, the drive assembly 3 can be directly installed inside the inner shell 2, eliminating the need for a separate gearbox protective sleeve, thus saving processing costs and installation space, and improving assembly efficiency. Furthermore, it ensures concentric and coaxial transmission of the gear set of the drive assembly 3, resulting in better stability. A battery 5 and a main unit are also housed inside the inner shell 2. The main board 6 and the switch 7, along with the battery 5, provide power to the electric nail clippers. The main board 6 and the switch 7 control the on / off switch of the electric nail clippers. The drive assembly 3 is mainly used to drive the blade head 4 to rotate as a whole to trim human nails. It mainly includes a motor 31, a drive gear 32, a first drive gear set 33, a second drive gear set 34, and a driven gear 35 connected in sequence. When working, the motor 31 drives the drive gear 32, the first drive gear set 33, the second drive gear set 34, and the driven gear 35 to rotate, which in turn drives the blade head 4 to rotate, ensuring that nails are trimmed electrically, which is more efficient and more comfortable.

[0021] In a preferred embodiment, refer to Figure 1-3 The electric nail clipper has an outer shell 1 comprising an upper shell 11 and a lower shell 12, and an inner shell 2 comprising a front shell 21 and a rear shell 22. A drive assembly 3 is located between the front shell 21 and the rear shell 22. The front shell 21 has a chip removal chamber 23, and a movable plate 24 is hinged to the outside of the chip removal chamber 23. The chip removal chamber 23 communicates with the chip removal port of the clipper head 4. The rear shell 22 has a hole 25 adapted to the on / off switch. The upper shell 11 and the lower shell 12 are sleeved together, and the front shell 21 and the rear shell 22 are snapped together. The front shell 21 and the rear shell 22 have mounting grooves 20 adapted to the drive assembly. Inside the outer shell 1, at the bottom of the inner shell 2, is a UV lamp.

[0022] Specifically, the outer shell 1 has a top-bottom structure, including an upper shell 11 and a lower shell 12, while the inner shell 2 has a left-right structure, including a 21 and a rear shell 22. The cross arrangement ensures the stability of the electric nail clipper housing. A chip removal chamber 23 is provided on the front shell 21, and a movable plate 24 is connected to the outside of the chip removal chamber 23. The nail clippings trimmed by the user can be collected in the chamber. When it is necessary to empty them, press one end of the movable plate 24 to empty the nail clippings for easy cleaning. A hole 25 is provided on the rear shell 22 to expose the power switch for easy switching on and off of the electric nail clipper. By providing mounting grooves 20 on the front shell 21 and the rear shell 22, the drive assembly 3 can be installed as a whole on the inner shell 2, resulting in a more reasonable structural design and lower production costs. By providing a UV lamp inside the outer shell 1 and at the bottom of the inner shell 2, the UV lamp can quickly dry the user's nail polish, achieving a multi-purpose effect.

[0023] In a preferred embodiment, refer to Figure 1-3The electric nail clipper has one or two blade holes, which can be arc-shaped or square. The number and shape of the blade holes can be set according to actual needs and are not specifically limited here.

[0024] In a preferred embodiment, refer to Figure 1-3 The first drive gear set 33 and the second drive gear set 34 of this electric nail clipper have the same structure, including a large gear 331, a small gear 332, and a connecting shaft 333. The connecting shaft 333 passes through the center of the large gear 331 and the small gear 332. The large gear 331 and the small gear 332 are coaxial. The driving gear 32 meshes with the large gear 331 of the first drive gear set, the small gear 332 of the first drive gear set meshes with the large gear of the second drive gear set, and the small gear of the second drive gear set meshes with the driven gear 35. The drive component 3 of this electric nail clipper is located inside the inner shell 2 of the nail clipper. When in use, pressing the power button 7 turns on the nail clipper. At the same time, the drive component 3 drives the roller blade inside the blade head 4 to rotate, so that the roller blade acts on the user's nails, trimming or rounding the nails during rotation. It adopts an automatic trimming method, which is different from traditional scissors, making it more efficient and safer.

[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An electric nail clipper, comprising a housing, an inner housing, a drive assembly disposed within the inner housing, and a cutting head, wherein the cutting head is connected to the drive assembly, characterized in that: The inner shell is provided with mounting slots adapted to the drive assembly and the cutter head. The inner shell also contains a battery, a main board, and a switch. The battery is electrically connected to the main board, and the switch is located on the main board to control the switching of the drive assembly. The cutter head includes a cutter barrel and a hob disposed inside the cutter barrel. One side of the cutter barrel has a cutting edge hole, and one end of the hob has a connecting post. The connecting post is connected to the drive assembly. The drive assembly includes a motor, a drive gear, a first drive gear set, a second drive gear set, and a driven gear. The output shaft of the motor is connected to the drive gear. The drive gear meshes with the first drive gear set, the second drive gear set, and the driven gear in sequence. The driven gear is connected to the connecting post.

2. The electric nail clipper as described in claim 1, characterized in that, The outer shell includes an upper shell and a lower shell, the inner shell includes a front shell and a rear shell, the drive assembly is located between the front shell and the rear shell, the front shell is provided with a chip discharge bin, a movable plate is hinged to the outside of the chip discharge bin, the chip discharge bin is connected to the chip discharge port of the cutter head, and the rear shell is provided with a hole adapted to the on / off switch.

3. The electric nail clipper as described in claim 2, characterized in that, The upper and lower shells are sleeved together, and the front and rear shells are snapped together.

4. The electric nail clipper as described in claim 1, characterized in that, The blade hole is one or two, and the blade hole is arc-shaped or square.

5. The electric nail clipper as described in claim 1, characterized in that, The first and second drive gear sets have the same structure, including a large gear, a small gear, and a connecting shaft. The connecting shaft passes through the center of the large gear and the small gear. The large gear and the small gear are coaxial. The driving gear meshes with the large gear of the first drive gear set, the small gear of the first drive gear set meshes with the large gear of the second drive gear set, and the small gear of the second drive gear set meshes with the driven gear.

6. The electric nail clipper as described in claim 1, characterized in that, Inside the outer shell, at the bottom of the inner shell, there is also a UV lamp.