Portable manicure device
By changing the grinding disc to a roller shape and rotating synchronously with the spiral milling cutter, the problem of complex structure and high cost of nail repair tool is solved, and the structure is simplified and cleaning is convenient.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-03-03
AI Technical Summary
Existing nail repair tools have a complex structure, requiring two sets of drive units to drive the grinding disc and the spiral milling cutter respectively, resulting in high cost and susceptibility to failure.
The grinding disc was changed to a roller shape and integrated onto the shank of the spiral milling cutter, so that the grinding roller rotates synchronously with the spiral milling cutter, eliminating the need for a dedicated drive unit for grinding.
The simplified structure reduces manufacturing costs, and the active suction of nail clippings through the exhaust component avoids splashing and residue, reducing cleaning work.
Smart Images

Figure CN223958456U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nail trimming technology, specifically to a portable nail trimming device. Background Technology
[0002] Nail trimmers are used to replace nail clippers to help people trim and file their nails, and they are easier to operate than nail clippers. In addition, nail trimmers are safer for helping elderly people with limited mobility and infants, effectively preventing conditions such as paronychia caused by nail trimming. While nail trimmers generally have the function of trimming and filing nails, most commercially available nail trimmers use a horizontally rotating grinding disc for filing. Because the rotation direction of the grinding disc is different from that of the spiral end mill used for trimming nails, two separate drive units are needed to drive the grinding disc and the spiral end mill separately. This not only results in a complex structure but also high cost and a higher likelihood of malfunction. Utility Model Content
[0003] To address the shortcomings of the prior art, this utility model proposes a portable nail trimmer that replaces the abrasive disc used for nail grinding with a roller shape and integrates it onto the shank of a spiral milling cutter used for trimming nails. This allows the nail grinding roller to rotate synchronously with the spiral milling cutter, eliminating the need for a dedicated drive unit for nail grinding, thereby simplifying the structure and reducing manufacturing costs.
[0004] This utility model proposes a portable nail trimmer, including a bottom shell with an inner cavity. A tool holder plate is fixed at the top opening of the inner cavity, and a spiral milling cutter is arranged laterally at the bottom of the tool holder plate. The shank of the spiral milling cutter is equipped with a nail grinding roller. The inner cavity is equipped with a nail trimmer motor for driving the spiral milling cutter to rotate and a battery for powering the nail trimmer motor.
[0005] The tool holder plate has a trimming groove facing the milling part of the spiral end mill and a grinding groove facing the grinding roller. The roller surface of the grinding roller extends out of the grinding groove and protrudes slightly from the top surface of the tool holder plate.
[0006] Preferably, the portable nail trimmer also includes a top cover, which is placed on top of the bottom shell and covers the blade holder plate inside the top cover. The top cover and the bottom shell are combined to form a disc-shaped structure.
[0007] Preferably, a bucket-shaped slide is provided inside the bottom shell, and a chip storage bin is provided in the center of the disc-shaped structure. The top wide part of the bucket-shaped slide is located at the bottom of the tool holder plate, and the bottom narrow part of the bucket-shaped slide is connected to the opening at the top of the chip storage bin.
[0008] Preferably, the bottom shell is provided with a detachable exhaust assembly, and the bottom of the chip storage bin is provided with a ventilation hole, which is connected to the air inlet of the exhaust assembly.
[0009] The blade holder plate has a surrounding edge, and a ring of perforations is provided at the connection of the blade holder plate along the surrounding edge. The ring of perforations is connected to the wide opening of the bucket-shaped slide.
[0010] Preferably, the exhaust assembly includes a fan base and a fan. The bottom of the base shell has a notch, the fan base is inserted into the notch, the fan is fixedly mounted on the top of the fan base, and several exhaust slots are provided on both sides of the fan base.
[0011] Preferably, a contact plate is provided on one side of the fan base, and a spring is provided on the bottom shell for engaging the contact plate. The contact plate is electrically connected to the fan, and the spring is electrically connected to the battery.
[0012] Preferably, the chip collection bin is made of transparent plastic, and a removable cover is provided on one side of the chip collection bin.
[0013] Preferably, the tool holder plate is inserted into the top opening of the bottom shell, the wide opening of the bucket-shaped slide is bonded to the bottom of the tool holder plate, and the narrow opening of the bucket-shaped slide is pressed against the top opening of the chip storage bin.
[0014] The beneficial effects of this utility model include: the portable nail trimmer replaces the abrasive disc used for nail grinding with a roller shape and integrates it onto the shank of the spiral milling cutter used for trimming nails, so that the abrasive roller rotates synchronously with the spiral milling cutter, eliminating the need for a dedicated drive unit for nail grinding, thereby simplifying the structure and reducing manufacturing costs; the portable nail trimmer actively sucks nail clippings into the clipping bin through a ventilation assembly, preventing nail clippings from flying around or remaining on the cutter holder plate, reducing the cleaning work after trimming; the ventilation assembly can be removed for cleaning, and after being inserted back into the bottom shell, it automatically connects to the battery circuit through a spring and a contact plate, avoiding the need for wire connections to hinder the cleaning work after the ventilation assembly is removed. Attached Figure Description
[0015] The present invention will now be described in detail with reference to the embodiments and accompanying drawings, wherein:
[0016] Figure 1 This is an exploded view of the structure of the portable nail repair tool of this utility model.
[0017] Figure 2 This is a front view of the portable nail trimmer of this utility model.
[0018] Figure 3 This is a top view of the tool holder plate of this utility model.
[0019] Figure 4 This is a structural diagram of the spiral end mill of this utility model.
[0020] Figure label:
[0021] 1-Bottom shell, 2-Tool holder plate, 21-Mask repair groove, 22-Grinding groove, 23-Fish-shaped slide, 24-Side rim, 25-Drain hole, 3-Helical end mill, 4-Grinding roller, 5-Mask repair motor, 6-Battery, 7-Top cover, 8-Chip storage bin, 81-Block cover, 82-Ventilation hole, 9-Exhaust assembly, 91-Fan base, 92-Fan, 93-Exhaust duct, 94-Touch plate. Detailed Implementation
[0022] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0023] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.
[0024] The principle of this utility model will be described in detail below with reference to the accompanying drawings and embodiments.
[0025] This invention discloses a portable nail trimmer, comprising a base shell 1 with an inner cavity. A blade holder plate 2 is fixedly mounted at the top opening of the inner cavity. A spiral milling cutter 3 is horizontally arranged at the bottom of the blade holder plate 2. The shank of the spiral milling cutter 3 is equipped with a nail-grinding roller 4. The inner cavity contains a nail trimming motor 5 for driving the spiral milling cutter 3 to rotate and a battery 6 for powering the nail trimming motor. The blade holder plate 2 has a nail trimming groove 21 facing the milling part of the spiral milling cutter 3 and a nail-grinding groove 22 facing the nail-grinding roller 4. The roller surface of the nail-grinding roller 4 extends out of the nail-grinding groove 22 and slightly protrudes from the top surface of the blade holder plate 2. When trimming nails, the nail is inserted into the nail trimming groove 21 and pressed against the spiral milling cutter 3. As the spiral milling cutter 3 rotates, it automatically cuts the nail. After trimming, the nail is lightly touched with the rotating nail-grinding roller 4 to smooth the cut nail. The portable nail trimmer replaces the nail-grinding disc with a roller and integrates it onto the shank of the spiral milling cutter 3 used for trimming nails. This allows the nail-grinding roller 4 to rotate synchronously with the spiral milling cutter 3, eliminating the need for a dedicated drive unit for nail grinding, thus simplifying the structure and reducing manufacturing costs.
[0026] In this embodiment, the portable nail trimmer also includes an upper cover 7, which is placed on top of the bottom shell 1 and covers the inside of the blade holder plate 2. The upper cover 7 and the bottom shell 1 are combined to form a disc-shaped structure, which is convenient to carry and hold by hand, and is also aesthetically pleasing.
[0027] In this embodiment, a funnel-shaped slide 23 is provided inside the bottom shell 1, and a chip storage bin 8 is located at the center of the disc-shaped structure. The top wide part of the funnel-shaped slide 23 is located at the bottom of the tool holder plate 2, and the bottom narrow opening of the funnel-shaped slide 23 is connected to the opening at the top of the chip storage bin 8. During trimming, the nail clippings cut off will splash along the cutting direction of the spiral end mill 3, and then enter the chip storage bin 8 along the funnel-shaped slide 23 for temporary storage. The chip storage bin 8 is made of transparent plastic, so the amount of nail clippings inside can be seen. In addition, a bin cover 81 is provided on one side of the chip storage bin 8. The bin cover 81 is connected to the bin wall of the chip storage bin 8 by threads. After unscrewing the bin cover 81, the temporarily stored nail clippings can be poured out.
[0028] In this embodiment, the bottom shell 1 is provided with a detachable exhaust assembly 9, and the bottom of the nail clipping chamber 8 is provided with a ventilation hole 82, which is connected to the air inlet of the exhaust assembly 9. The blade holder plate 2 is provided with a rim 24 around its perimeter, and a ring of drainage holes 25 is provided along the connection of the rim 24. The ring of drainage holes 25 communicates with the wide opening of the bucket-shaped slide 23. When trimming nails, if the portable nail clipper is held at an angle, nail clippings may splash out of the nail clipping groove 21. The rim 24 is used to cover the nail clippings. The portable nail clipper actively sucks the nail clippings into the nail clipping chamber 8 through the exhaust assembly 9, preventing nail clippings from splashing everywhere or remaining on the blade holder plate 2, thus eliminating the need for cleaning after trimming.
[0029] In this embodiment, the exhaust assembly 9 includes a fan base 91 and a fan 92. A notch is provided at the bottom of the base 1, into which the fan base 91 is inserted. The fan 92 is centrally fixed to the top of the fan base 91. Several exhaust slots 93 are provided on both sides of the fan base 91. A contact plate 94 is provided on one side of the fan base 91, and a spring contact is provided on the base 1 for engaging the contact plate 94. The contact plate 94 is electrically connected to the fan 92, and the spring contact is electrically connected to the battery 6. The exhaust assembly 9 can be removed for cleaning. After being inserted back into the base 1, it automatically connects to the battery 6 via the spring contact and the contact plate 94, preventing the wiring connections from hindering the cleaning process after the exhaust assembly 9 is removed.
[0030] In this embodiment, the tool holder plate 2 is inserted into the top opening of the bottom shell 1, the wide opening of the bucket-shaped slide 23 is glued to the bottom of the tool holder plate 2, and the narrow opening of the bucket-shaped slide 23 is pressed against the top opening of the chip collection bin 8. The tool holder plate 2 can be pulled out of the bottom shell 1 for rinsing, and after cleaning, the narrow opening of the bucket-shaped slide 23 is pressed back against the top opening of the chip collection bin 8 to complete the connection.
[0031] 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 and improvements 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 portable nail trimmer, characterized in that, The device includes a bottom shell with an inner cavity. A tool holder plate is fixed at the top opening of the inner cavity. A spiral milling cutter is arranged laterally at the bottom of the tool holder plate. The shank of the spiral milling cutter is equipped with an armor-grinding roller. An armor-grinding motor for driving the spiral milling cutter to rotate and a battery for powering the armor-grinding motor are provided in the inner cavity. The tool holder plate has a trimming groove facing the milling part of the spiral milling cutter and a grinding groove facing the grinding roller. The roller surface of the grinding roller extends out of the grinding groove and protrudes slightly from the top surface of the tool holder plate.
2. The portable nail trimmer as described in claim 1, characterized in that, The portable nail trimmer also includes a top cover, which is placed on top of the bottom shell and covers the blade holder plate inside the top cover. The top cover and the bottom shell are combined to form a disc-shaped structure.
3. The portable nail trimmer as described in claim 2, characterized in that, The bottom shell is provided with a bucket-shaped slide, and the center of the disc-shaped structure is provided with a chip storage bin. The top wide part of the bucket-shaped slide is located at the bottom of the tool holder plate, and the bottom narrow part of the bucket-shaped slide is connected to the opening at the top of the chip storage bin.
4. The portable nail trimmer as described in claim 3, characterized in that, The bottom shell is equipped with a detachable exhaust assembly, and the bottom of the chip storage bin is provided with a ventilation hole, which is connected to the air inlet of the exhaust assembly. The blade holder plate has a surrounding edge, and a ring of perforations is provided along the connection of the surrounding edge. The ring of perforations communicates with the wide opening of the bucket-shaped slide.
5. The portable nail trimmer as described in claim 4, characterized in that, The exhaust assembly includes a fan base and a fan. The bottom of the base shell has a notch, the fan base is inserted into the notch, the fan is centrally fixed to the top of the fan base, and several exhaust slots are provided on both sides of the fan base.
6. The portable nail trimmer as described in claim 5, characterized in that, A contact plate is provided on one side of the fan base, and a spring piece is provided on the bottom shell for connecting the contact plate. The contact plate is electrically connected to the fan, and the spring piece is electrically connected to the battery.
7. The portable nail trimmer as described in claim 3, characterized in that, The chip storage bin is made of transparent plastic, and a removable cover is provided on one side of the chip storage bin.
8. The portable nail trimmer as described in claim 3, characterized in that, The tool holder plate is inserted into the top opening of the bottom shell, the wide opening of the bucket-shaped slide is glued to the bottom of the tool holder plate, and the narrow opening of the bucket-shaped slide is pressed against the top opening of the chip storage bin.