NAIL GRINDER

Abstract

A nail grinder includes: a housing, a master control module, a drive assembly, a nail grinding member, a power supply, and a display. The housing has a receiving cavity, and a cavity wall defines a first through opening communicating with to an exterior of the housing, a mounting structure is arranged on an outer surface of the housing. The master control module is received in the receiving cavity. The drive assembly is received in the receiving cavity and electrically connected to the master control module. The nail grinding member is at least partially exposed out of the receiving cavity and connected to the drive assembly. The drive assembly drives the nail grinding member to rotate. The power supply is received in the receiving cavity and electrically connected to the master control module. The display is mounted on the mounting structure and electrically connected to the master control module.

Claims

1. A nail grinder, comprising: a housing, having a receiving cavity, wherein a wall of the receiving cavity defines a first through opening communicating with to an exterior of the housing, a mounting structure is arranged on an outer surface of the housing, and a cavity of the mounting structure is fluidly connected with the receiving cavity; a master control module, received in the receiving cavity and disposed at a side of the mounting structure; a drive assembly, received in the receiving cavity and electrically connected to the master control module; a nail grinding member, at least partially exposed out of the receiving cavity and connected to the drive assembly through the first through opening, wherein the drive assembly is configured to drive the nail grinding member to rotate; a power supply, received in the receiving cavity and electrically connected to the master control module; and a display, at least partially mounted on the mounting structure and electrically connected to the master control module; wherein, the master control module is attached to an inner surface of the housing; the power supply is disposed at a side of the master control module opposite to the inner surface of the housing; and the drive assembly is connected to and extending away from an end of the master control module and an end of the power supply.

2. The nail grinder according to claim 1, wherein a portion of the housing serves as the mounting structure.

3. The nail grinder according to claim 2, wherein a surface of the mounting structure facing away from the receiving cavity has a first region and a second region surrounding a circumference of the first region, the first region is recessed relative to the second region towards the receiving cavity, the recessed first region and the second region cooperatively define a mounting groove, the display is mounted in the mounting groove.

4. The nail grinder according to claim 3, wherein a bottom of the mounting groove defines a second through opening communicating with the receiving cavity, the display comprises a display panel and a protective screen covering the display panel, the display panel is integrated into the master control module and is received in the second through opening, and the protective screen is received in the mounting groove.

5. The nail grinder according to claim 1, wherein, along a length direction of the nail grinder, the drive assembly is disposed between the nail grinding member and the power supply; and an orthographic projection of the power supply onto the inner surface of the housing is entirely located out of an orthographic projection of the drive assembly onto the inner surface of the housing.

6. The nail grinder according to claim 1, further comprising a foam, wherein an adhesive layer is arranged on a surface of the foam, and the power supply is adhered to a side of the master control module away from the display via the foam.

7. The nail grinder according to claim 1, wherein the housing comprises two end portions and a hand-held portion, the two end portions are disposed opposite to each other in a length direction of the housing, the hand-held portion is disposed between the two end portions, and the hand-held portion is curved and is recessed towards the receiving cavity.

8. The nail grinder according to claim 1, wherein the nail grinding member is detachably connected to the drive assembly.

9. The nail grinder according to claim 8, wherein the drive assembly comprises a body and an output shaft, the output shaft is arranged on the body, the body is configured to drive the output shaft to rotate, a side of the output shaft away from the body defines a slot, the nail grinding member comprises a grinding head and a connection rod, an end of the connection rod is connected to the grinding head, and the other end of the connection rod is detachably inserted in the slot.

10. The nail grinder according to claim 9, wherein a cross section of the other end of the connection rod is different from a circle, and the slot has a shape matching with a shape of the other end of the connection rod.

11. The nail grinder according to claim 9, wherein the nail grinding member further comprises a connection base, the connection rod extends through the connection base and is rotatably connected to the connection base, the connection base is inserted in the first through opening, and the connection base is fixedly connected to the housing in a circumferential direction of the connection rod.

12. The nail grinder according to claim 11, further comprising: a collection cover, wherein the collection cover comprises a collection portion and a snapping portion, the collection portion is disposed on a side of the grinding head in a direction perpendicular to a rotation axis of the grinding head, the snapping portion is connected to a side of the collection cover facing the housing, the snapping portion is snapped to the connection base.

13. The nail grinder according to claim 9, further comprising: a sound insulating foam that wraps the body.

14. The nail grinder according to claim 1, wherein, along a direction perpendicular to a length direction of the nail grinder, a size of the drive assembly is greater than a size of the power supply.

15. The nail grinder according to claim 1, wherein, an angle between a rotation axis of the drive assembly substantially coincides with or is parallel to a center line of the power supply.

16. The nail grinder according to claim 1, further comprising a switch assembly, wherein the switch assembly and the display are disposed on a same side of the housing.

17. The nail grinder according to claim 16, wherein the switch assembly comprises a motor control switch, the motor control switch is at least partially exposed out of the housing and is connected to the master control module, and the motor control switch is configured to control the drive assembly to start operating or to stop operating.

18. The nail grinder according to claim 17, further comprising a light source, wherein the light source is electrically connected to the master control module, the light source emits light towards a region adjacent to the nail grinding member, and the adjacent region is located on a side of the nail grinding member opposite to a rotational center line of the nail grinding member.

19. The nail grinder according to claim 18, wherein the housing comprises two ends disposed opposite each other in a length direction of the housing, the display is disposed adjacent to one of the two ends of the housing, and the light source is disposed adjacent to the other one of the two ends of the housing, and the switch assembly is disposed between the display and the light source.

20. The nail grinder according to claim 19, wherein the switch assembly further comprises a light source control button, the light source control button is exposed from the outer surface of the housing and is connected to the master control module, the light source control button is configured to switch on and switch off the light source.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Specific embodiments of the present disclosure will be described in further detail below by referring to the accompanying drawings and embodiments.

[0011] FIG. 1 is a perspective view of a nail grinder according to an embodiment of the present disclosure.

[0012] FIG. 2 is an assembled view of the nail grinder according to an embodiment of the present disclosure.

[0013] FIG. 3 is an enlarged view of a portion A in FIG. 2.

[0014] FIG. 4 is a schematic view of a drive assembly, a master control module, and a battery of the nail grinder according to an embodiment of the present disclosure.

[0015] FIG. 5 is a cross-sectional view of a portion of a housing and a motor of the nail grinder according to an embodiment of the present disclosure.

[0016] FIG. 6 is an assembled schematic view of the housing and the motor of the nail grinder according to an embodiment of the present disclosure.

[0017] FIG. 7 is an assembled schematic view of the housing and the master control module of the nail grinder according to an embodiment of the present disclosure.

[0018] FIG. 8 is an assembled schematic view of the housing and the battery of the nail grinder according to an embodiment of the present disclosure.

[0019] FIG. 9 is an assembled schematic view of a charging port and the housing of the nail grinder according to an embodiment of the present disclosure.

[0020] FIG. 10 is an assembled schematic view of a nail grinding member and a drive assembly of the nail grinder according to an embodiment of the present disclosure.

[0021] FIG. 11 is an assembled schematic view of the nail grinding member and the housing of the nail grinder according to an embodiment of the present disclosure.

[0022] FIG. 12a is a perspective view of a grinding head having a conical body and a flat free end according to an embodiment of the present disclosure.

[0023] FIG. 12b is a perspective view of a grinding head having a round-disk shape according to an embodiment of the present disclosure.

[0024] FIG. 12c is a perspective view of a grinding head having a bullet shape according to an embodiment of the present disclosure.

[0025] FIG. 13 is an assembled schematic view of a collection cover and a connection base according to an embodiment of the present disclosure.

[0026] FIG. 14 is an assembled schematic view of a light source and the housing according to an embodiment of the present disclosure.

REFERENCE NUMERALS IN THE DRAWINGS

[0027] 10, housing; 11, receiving cavity; 11a, first mounting portion; 11b, first positioning rib; 11c, second positioning rib; 11d, second mounting portion; 11e, fixation tab; 11f, limiting protrusion; 12, first through opening; 13, mounting structure; 13a, tab; 13b, mounting groove; 14, upper cover; 15, lower cover; 16, second through opening; 17, screw; 18, hand-held portion; 19, through hole; 20, master control module; 30, drive assembly; 31, body; 32, output shaft; 32a, slot; 40, nail grinding member; 41, grinding head; 42, connection rod; 43, connecting base; 43a, joining portion; 43b, insertion portion; 50, power supply; 60, display; 61, protective screen; 62, display panel; 70, charging port; 80, foam; 90, sound insulating foam; 100, collection cover; 101, collection portion; 102, a snapping portion; 110, light source; 120, switch assembly; 121, motor control switch; 121a, press switch; 121b, toggle switch; 122, light source control button.

DETAILED DESCRIPTION

[0028] To be noted that, if no conflict is caused, features in various the embodiments of the present disclosure may be combined with each other. Preferred embodiments of the present disclosure will be described in detail by referring to the accompanying drawings.

[0029] The present disclosure provides a nail grinder 1000, as shown in FIG. 1 to FIG. 3, the nail grinder 1000 includes a housing 10, a master control module 20, a drive assembly 30, a nail grinding member 40, a power supply 50, and a display 60. The housing 10 defines a receiving cavity 11. A wall of the receiving cavity 11 defines a first through opening 12 that communicates with an exterior of the housing 10. A mounting structure 13 is arranged on an outer surface of the housing 10. The master control module 20 is received in the receiving cavity 11 and is disposed on a side of the mounting structure 13, for example, an orthographic projection of the mounting structure 13 onto the housing at least partially overlaps with an orthographic projection of the master control module 20 onto the housing. The drive assembly 30 is received in the receiving cavity 11 and is electrically connected to the master control module 20. The nail grinding member 40 is at least partially exposed out of the receiving cavity 11. The nail grinding member 40 is connected to the drive assembly 30 through the first through opening 12, such that the drive assembly 30 drives the nail grinding member 40 to rotate. The power supply 50 is received in the receiving cavity 11 and is electrically connected to the master control module 20. The display 60 is at least partially mounted on the mounting structure 13 and is electrically connected to the master control module 20.

[0030] According to the above embodiment, the nail grinder 1000 provides a larger space to receive the power supply 50, such that an operation endurance of nail grinder 1000 is increased.

[0031] Specifically, the display 60 is arranged at an outside of the housing 10 via the mounting structure 13 and is prevented from occupying a portion of the receiving cavity 11, and therefore, a larger space is available for receiving the battery, and the power capacity of the battery may be increased. A larger power capacity of the battery means that more electrical energy can be stored, and the operation endurance of the nail grinder can be prolonged. In addition, since increasing the power capacity, the user may use the nail grinder 1000 for a longer period of time without charging the nail grinder 1000 frequently, and the nail grinder 1000 may be more practical and may be used more conveniently.

[0032] As shown in FIG. 2, the housing 10 includes an upper cover 14 and a lower cover 15. The upper cover 14 and the lower cover 15 cooperatively define the receiving cavity 11. The upper cover 14 and the lower cover 15 may be connected to each other by threaded connection, snap connection, and so on, such that other components may be received in the receiving cavity 11 easily.

[0033] As shown in FIG. 1, in an embodiment, the housing 10 includes two end portions and a hand-held portion 18. The two end portions are opposite to each other in a length direction of the housing. The hand-held portion 18 is curved and is recessed towards the receiving cavity 11, such that the hand-held portion 18 may fit with a hand optimally and may be held by the hand of the user easily, and the hand-held portion 18 may not be dropped out of the hand while being in use.

[0034] Locations at which the master control module 20, the drive assembly 30 and the power supply 50 are arranged may be various. As shown in FIG. 2 and FIG. 4, in an embodiment, the drive assembly 30 is located between the nail grinding member 40 and the power supply 50. In the present embodiment, the drive assembly 30 is disposed near the first through opening 12 to reduce a space of the receiving cavity 11 occupied by the drive assembly 30. The master control module 20 and the power supply 50 are disposed on a side of the drive assembly 30 away from the first through opening 12. The master control module 20 is disposed on a side of the power supply 50 near the display 60 and is mounted on the wall of the receiving cavity of the housing 10, such that more space is available to receive the power supply 50.

[0035] In order to better secure the master control module 20, the drive assembly 30 and the power supply 50, as shown in FIG. 5 to FIG. 8 of the present disclosure, a first mounting portion 11a and a second mounting portion 11d are arranged in the receiving cavity 11. The first mounting portion 11a is disposed on a side of the first through opening 12 away from the nail grinding member 40. The second mounting portion 11d is disposed on a side of the first mounting portion 11a away from the first through opening 12. The first mounting portion 11a is configured to secure the drive assembly 30, and the second mounting portion 11d is configured to secure the master control module 20 and the power supply 50.

[0036] Specifically, the first mounting portion 11a includes a first positioning rib 11b and a second positioning rib 11c. The first positioning rib 11b and the second positioning rib 11c are disposed on the wall of the receiving cavity 11. The first positioning rib 11b is disposed on the upper cover 14, and the second positioning rib 11c is disposed on the lower cover 15. The first positioning rib 11b and the second positioning rib 11c to cooperatively define a mounting cavity. The drive assembly 30 may be received in the mounting cavity, and an outer peripheral surface of the drive assembly 30 may be surrounded by the first positioning rib 11b and the second positioning rib 11c.

[0037] In this way, the drive assembly 30 may be arranged in the housing 10 quickly and conveniently. It is only necessary to place the drive assembly 30 on the second positioning rib 11c and to close the upper cover 14 with respect to the lower cover 15, and in this way, the drive assembly 30 can be fixedly arranged in the mounting cavity, and a position of the drive assembly 30 may be limited, greatly reducing an assembling time.

[0038] As shown in FIG. 7 and FIG. 8, the second mounting portion 11d includes a fixation tab 11e and a limiting protrusion 11f. The fixation tab 11e protrudes from the wall of the receiving cavity 11 and is disposed on a side of the housing 10 away from the mounting structure 13. The fixation tab 11e is configured to provide a mounting surface for the master control module 20, allowing the master control module 20 to be mounted easily. The limiting protrusion 11f is disposed on a side of the wall of the receiving cavity 11 opposite to the fixation tab 11e. The limiting protrusion 11f is configured to limit the power supply 50. The master control module 20 and the power supply 50 are clamped between the fixation tab 11e and the limiting protrusion 11f, such that connection between the master control module 20 and the housing 10 and connection between the power supply 50 and the housing 10 is more stable

[0039] The fixation tab 11e and the master control module 20 may be secured to each other in various ways. For example, the fixation tab 11e and the master control module 20 may be secured to each other by threaded connection or snapped connection. Exemplarily, as shown in FIG. 7, in the present disclosure, the fixation tab 11e defines a threaded hole, and the master control module 20 defines an avoidance hole. A screw 17 extends through the avoidance hole of the master control module 20 to be threaded with the threaded hole. Therefore, the master control module 20 is firmly connected to the housing 10 based on a tightening force of the screw 17. In this way, connection between the master control module 20 and the housing 10 is more secure, and in addition, the connection based on the screw 17 may be disassembled easily. In some embodiments, the fixation tab 11e may protrude slightly from the wall of the receiving cavity 11 to allow the master control module 20 to attach more tightly with the wall of the receiving cavity 11. In this way, a less space of the receiving cavity 11 is occupied, and more space is provided to receive the power supply 50. Preferably, in the present disclosure, a side of the limiting protrusion 11f facing the power supply 50 has a semi-curved surface to better attach to a surface of the power supply 50, such that the power supply 50 may be optimally limited and fixed.

[0040] As shown in FIG. 9, in the present disclosure, the power supply 50 is electrically connected to a charging port 70. The charging port 70 is exposed out of the housing 10 and is independently disposed at one of the two ends of the housing 10 to charge the power supply 50. In some embodiments, the charging port 70 is located in a center of the end, such that the charging may be performed easily.

[0041] In the present disclosure, the drive assembly 30 may be a motor. In some embodiments, the drive assembly 30 is a speed-regulated motor, which may provide different rotation speeds to allow the user to grind various portions of the body. For example, when dead skin is to be removed, the user may select a low-speed gear, to avoid bleeding caused by damaging the skin. When the nail is to be grinded, the user may select a high-speed gear, to improve fineness of the grinding. Therefore, the nail grinder 1000 has better adaptability and is safe.

[0042] The display 60 in the present disclosure may display an operation of the nail grinder 1000 when the nail grinder 1000 is in use, providing parameters the nail grinder 1000 to the user in real-time. For example, the display 60 may display the remaining power or display the rotation speed of the motor, such that the user may use the nail grinder 1000 conveniently. The display 60 is electrically connected to the master control module 20. In some embodiments, the display 60 may be disposed at the end of the housing 10 away from the first through opening 12 and is misaligned with the hand-held portion 18. In this way, when the user is operating the nail grinder 1000, the display 60 may be observed by the user and may not be blocked by fingers of the user.

[0043] As shown in FIG. 3, in an embodiment, a portion of the housing 10 serves as the mounting structure 13. A surface of the mounting structure 13 facing away from the receiving cavity 11 has a first region and a second region surrounding a circumference of the first region. The first region is recessed relative to the second region towards the receiving cavity 11. The recessed first region and the second region cooperatively define a mounting groove 13b. In some embodiments, the second region may be aligned with the outer surface of another portion of housing 10 adjacent to the second region. In some embodiments, the second region protrudes from the outer surface of the another portion of housing 10 adjacent to the second region; and in this case, the mounting structure 13 may be a tab 13a that protrudes from the outer surface of the housing 10. The display 60 is mounted the mounting structure 13. More specifically, the display 60 is received in the mounting groove 13b of the mounting structure 13, such that the display 60 does not occupy the internal space of the housing 11. In addition, since an opening of the mounting groove 13b of the mounting structure 13 faces the outside of the housing 10, the display 60 may be mounted more easily.

[0044] The mounting groove 13b may be in various shapes. For example, in the present embodiment, the mounting groove 13b may be a straight groove, each of two ends of the straight groove is semi-circular. In this way, an outer appearance of the housing 11 may be better.

[0045] By defining the mounting groove 13b, the display 60 may be mounted and limited better by a side wall and a bottom wall of the mounting groove 13b, and therefore, stability of the connection is improved. In addition, the mounting groove 13b provides protection for the display 60.

[0046] To be noted that, according to the above embodiment, an edge of the display 60 is covered by the side wall of the mounting groove 13b, such that the outer appearance of the nail grinder 1000 may be better.

[0047] The display 60 of the present disclosure includes a display panel 62 with a protective screen 61 covering the display panel 62. The protective screen 61 protects the display panel 62 from collision, improving collision resistance of the nail grinder 1000. The display panel 62 is configured to display the parameters of the nail grinder 1000 in real-time. The display panel 62 may be integrated to the master control module 20 to reduce the number of components, such that installation and maintenance may be performed easily.

[0048] Specifically, the protective screen 61 is made of a transparent or semi-transparent material. Exemplarily, the protective screen 61 may be glass or a transparent plastic cover. In some embodiments, only a portion of the protective screen 61 corresponding to a displaying region of the display panel 62 is made of the transparent material, and the rest portion of the protective screen 61 may be subjected to other treatments, such as being configured into a non-transparent dark color for covering the mounting groove. Alternatively, the rest portion of the protective screen 61 may be directly printed with a pattern to improve the overall outer appearance.

[0049] As shown in FIG. 3, in an embodiment, the bottom wall of the mounting groove 13b defines a second through opening 16 communicating with the receiving cavity 11. The display panel 62 is received in the second through opening 16. The protective screen 61 is received in the mounting groove 13b. The side wall of the mounting groove 13b may limit and protect the protective screen 61. The display panel 62 may be mounted on a wall of the second through opening 16, and the wall of the second through opening 16 may limit the display panel 62. In this way, stability and reliability of the connection of the display 60 may be improved.

[0050] Specifically, a contour of the groove wall of the mounting groove 13b matches with an outer contour of the protective screen 61 to improve the limiting and fixation effect on the protective screen 61. In some embodiments, the protective screen 61 and the groove wall of the mounting groove 13b are connected to each other in an interference fit or by an adhesive to ensure firm connection therebetween and to avoid accidental separation. In addition, a depth of the mounting groove 13b may be slightly larger than a thickness of the protective screen 61. After the protective screen 61 is attached to the bottom of the mounting groove 13b, the protective screen 61 does not protrude from an upper edge of the groove wall, such that additional protection is provided for the protective screen 61. Similarly, a contour of the wall of the second through opening 16 matches with an outer contour of the display panel 62. The contour of the wall of the second through opening 16 may be circular or polygonal. In the present embodiment, the second through opening 16 is rectangular to provide more space for the display panel 62.

[0051] As shown in FIG. 4, in an embodiment, the nail grinder 1000 further includes a foam 80. A surface of the foam 80 is provided with an adhesive layer. The power supply 50 is adhered to the side of the master control module 20 away from the display 60 through the foam 80. In this way, the master control module 20 and the power supply 50 are connected to each other by the foam 80, simplifying installation and maintenance. In addition, the foam 80 has certain elasticity and softness. When the nail grinder 1000 is subjected to an external impact, the foam 80 provides shock absorption and a cushioning effect. The impact applied to the power supply 50 is reduced and the master control module 20, and the nail grinder 1000 is more reliable.

[0052] The nail grinder 1000 in the present disclosure is detachably connected to the drive assembly 30 to allow the user to arrange various nail grinding members 40 to meet various demands.

[0053] As shown in FIG. 10, in an embodiment, the drive assembly 30 includes a body 31 and an output shaft 32. The output shaft 32 is arranged on the body 31. The body 31 is configured to drive the output shaft 32 to rotate. A side of the output shaft 32 away from the body 31 defines a slot 32a. The nail grinding member 40 includes a grinding head 41 and a connection rod 42. An end of the connection rod 42 is connected to the grinding head 41, and the other end is detachably inserted into the slot 32a. In this way, the user may replace among various nail grinding members 40 to meet different demands. Moreover, the connection rod 42 is connected to the slot 32a by plugging and unplugging, which is more convenient for the user to remove and to mount the nail grinding member.

[0054] In addition, as shown in FIGS. 12a-c, in the present embodiment, there are various types of grinding heads 41. For example, the grinding head 41 may be a needle-shaped head, a bullet-shaped head, a conical body with a flat head, a conical body with a round head, or a round disc-shaped head, and so on. Different shapes of the grinding heads 41 may be suitable to grinding different parts and may provide different grinding effects, improving the user's experience. The user may select an appropriate shape of the grinding head 41 to achieve a desired nail grinding effect and a desired trimming requirement.

[0055] In the above embodiment, a shape of the connection rod 42 may be various. For example, the connection rod 42 may be cylindrical or conical. In the present embodiment, a cross-section of the other end of the connection rod 42 is different from a circle. Exemplarily, the other end of the connection rod 42 may be elliptical or polygonal. More specifically, the connection rod 42 may be hexagonal. The slot 32a may be a slot having a mimetic shape adapted to the shape of the other end of the connection rod 42. In this way, since the hexagonal shape has a clear directional performance, when hexagonal end is inserted into the hexagonal slot, the connection between the end of the connection rod and the slot is improved, and the connection rod 42 is prevented from rotating in the slot 32a.

[0056] As shown in FIG. 11, in an embodiment, the nail grinding member 40 further includes a connection base 43, the connection rod 42 extends through the connection base 43 and is rotationally connected to the connection base 43. The connection base 43 is inserted in the first through opening 12 to enable the connection base 43 to be fixedly connected to the housing 10 in a circumferential direction of the connection rod 42. Since the connection rod 42 is rotationally connected to the connection base 43, stability of rotation of the connection rod 42 is improved, such that the grinding head 41 may rotate smoothly and stably, and a nail grinding effect may be improved. The connection base 43 is inserted in the first through opening 12, and the first through opening 12 limits the connection base 43 to prevent the connection base 43 from rotating as the connection rod 42 rotates.

[0057] Specifically, the connection base 43 includes a joining portion 43a and an insertion portion 43b. The joining portion 43a is disposed at a side of the insertion portion 43b away from the first through opening 12. The joining portion 43a increases a rotational contact area contacting the connection rod 42, such that stability of the rotation is improved. The insertion portion 43b improves the limiting effect of the first through opening 12 applied to the connection base 43. In addition, an outer contour of the insertion portion 43b matches with a shape of the first through opening 12, and the shape of the first through opening 12 is different from a circle. In the present embodiment, each of the first through opening 12 and the insertion portion 43b is hexagonal, such that after the insertion portion 43b of the connection base 43 is inserted into the first through opening 12, the insertion portion 43b may be completely limited, and the nail grinder 1000 is more reliable and stable.

[0058] As shown in FIG. 13, in an embodiment, the nail grinder 1000 further includes a collection cover 100. The collection cover 100 includes a collection portion 101 and a snapping portion 102. The collection portion 101 is disposed on a side of the grinding head 41 along a direction perpendicular to a rotation axis of the grinding head 41. The snapping portion 102 is connected to a side of the collection portion 101 facing towards the housing 10. The snapping portion 102 is snapped to the connection base 43. The collection portion 101 collects, in time, dead skin and debris that are grinded off from the nail and prevents the dead skin and the debris from splashing out, enabling the user to clear and clean the nail grinder 1000. The snapping portion 102 is snapped on the connection base 43, allowing the collection cover 100 to be detachably arranged, such that the user may determine, based on demands, whether or not to use the collection cover 100, and the nail grinder 1000 may be used flexibly.

[0059] Specifically, the collection portion 101 is arranged extending in a rotation direction of the grinding head 41 to increase a coverage area of the collection portion 101, allowing collection and cleaning to be performed easily. The snapping portion 102 is adapted to and snapped to the connection base 43. In the present embodiment, the snapping portion 102 is U-shaped. In this way, the user may quickly mount the collection cover 100 on the connection base 43, and quick-release may be achieved. The user only needs to snap the U-shaped snapping portion 102 to the connection base 43 to achieve the connection, allowing the nail grinder 1000 to be used more conveniently and easily.

[0060] In the present embodiment, the collection cover 100 may be made of a transparent material, such that the user may observe a nail grinding process and check a collection effect when using the nail grinder 1000.

[0061] As shown in FIG. 4, in an embodiment, the nail grinder 1000 further includes a sound insulating foam 90. The sound insulating foam 90 wraps around the body 31 and is mounted in the first mounting portion 11a. The sound insulating foam 90 reduces noise generated by the body 31 of the drive assembly 30. In this way, a quiet operating effect may be achieved when the nail grinder 1000 is in use, providing a more comfortable usage environment to the user. Specifically, the sound insulating foam 90 has a sound absorbing performance, effectively reduces transmission of the noise generated by the drive assembly 30, and reduces interference to the user.

[0062] As shown in FIG. 4, in an embodiment, in a direction perpendicular to a length direction of the nail grinder 1000, a size of the body 31 is larger than a diameter of the power supply 50. That is, a height of the body 31 is smaller than a height of the power supply 50. A larger sized body 31 may receive more motor members and rotors, such that the drive assembly 30 provides a greater output capacity. In addition, the height of the body 31 is smaller than the height of the power supply 50, such that the body 31 provides more space to receive the power supply 50, such that the power capacity of the power supply 50 may be improved, and the nail grinder 1000 may have a more reasonable design.

[0063] As shown in FIG. 4, in an embodiment, an angle between a rotation axis of the output shaft 32 and a center line of the power supply 50 is less than or equal to 5. That is, the rotation axis of the output shaft 32 substantially coincides with or parallel to the center line of the power supply 50. In this way, the space can be effectively utilized, especially in scenarios where a limited space is available or a compact design is required. In the present disclosure, the size of the housing 10 may be reduced to allow the nail grinder 1000 to be smaller, to have a more compact structure, and to be portable.

[0064] As shown in FIG. 1, in an embodiment, the nail grinder 1000 further includes further comprises a switch assembly 120. The switch assembly 120 and the display 60 are disposed on a same side of the housing 10. The switch assembly 120 includes a motor control switch 121. The motor control switch 121 is at least partially exposed out of the housing 10 and is connected to the master control module 20. The motor control switch 121 is configured to control the drive assembly 30 to start operating or to stop operating. In this way, the user, when operating the nail grinder 1000, may check information displayed on the display.

[0065] The motor control switch 121 may be operated in various ways. As shown in FIG. 1, in an embodiment, the motor control switch 121 is a press switch 121a. The press switch 121a controls the drive assembly 30 to start operating or to stop operating, furthermore, the press switch 121a adjusts the rotation speed of the drive assembly 30. For example, the user presses the press switch 121a to switch among a low-speed mode, a medium-speed mode, and a high-speed mode to meet different trimming demands. In another embodiment, the motor control switch 121 is a toggle switch 121b. In a toggle direction of the toggle switch 121b, the toggle switch 121b has a first toggle position, a second toggle position, and a third toggle position sequentially. When the first toggle switch 121b is set at the first toggle position, the drive assembly 30 provides a positive driving. When the first toggle switch 121b is set at the second toggle position, the drive assembly 30 stops operating. When the first toggle switch 121b is set at the third toggle position, the drive assembly 30 provides a negative driving. In this way, the toggle operation may be performed easily, and false touches may be reduced. In addition, various adjustments may be achieved by arranging only one motor control switch 121, the user may witch modes rapidly.

[0066] To be noted that, when the nail grinder 1000 is being used, nails or other debris may jam the nail grinding member 40, resulting in the nail grinding member 1000 unable to operate properly. Based on the above embodiment, the drive assembly 30 drives the nail grinding member 40 to rotate forwardly and reversely, the rotation direction of the nail grinding member 40 is changed, the jamming situation may be solved. For example, when the nail grinding member 40 is jammed, the user may attempt to reversely rotate the motor to release the jam and to restore the operation of the nail grinder 1000.

[0067] As shown in FIG. 14, in an embodiment, the nail grinder 1000 further includes a light source 110. The light source 110 is electrically connected to the master control module 20. The light source 110 emits light towards a region adjacent to the nail grinding member 40. The adjacent region is located on a side of the nail grinding member 40 away from a rotational center line of the nail grinding member 40. Specifically, when the user is using the nail grinder 1000, the user needs to place the grinding portion at the region adjacent to the nail grinding member 40. Since the light source 110 emits light towards the adjacent region, the light source 110 provides light to the grinding portion when the user is grinding the nail, such that the user may observe the grinding situation more clearly. The user may control a position and strength of the nail grinder 1000 more accurately, preventing accidents and improving operation safety.

[0068] Specifically, the light source 110 may be a light-emitting diode (LED) lamp. In an embodiment, the light source 110 may be arranged inside the housing 10. The housing 10 defines a through hole 19. A light emitting surface of the LED lamp is exposed out of the housing 10 through the through hole 19. The housing 10 may protect the LED lamp. In addition, since only the light emitting surface of the LED lamp is exposed out of the housing 10, the outer appearance of the nail grinder 1000 may be better.

[0069] As shown in FIG. 1, in an embodiment, the housing 10 includes two ends disposed opposite each other in the length direction of the housing 10. The display is disposed near one of the two ends of the housing 10. The light source 110 is disposed near the other of the two ends of the housing 10. The switch assembly 120 is disposed between the display 60 and the light source 110. In an embodiment, the switch assembly 120 and the display 60 are disposed on a same side of the housing 10, allowing the user to manipulate and observe the nail grinder 1000 at the same time. In this way, when the user holds the nail grinder 1000 with four fingers, the user may use the thumb to manipulate the switch assembly 120, convenience of the manipulation is greatly improved, and the user may perform adjustment to meet various demands while using the nail grinder 1000.

[0070] In the above embodiments, the light source 110 may be activated in various ways. As shown in FIG. 1, in an embodiment, the switch assembly 120 further includes a light source control button 122. The light source control button 122 is exposed on the outer surface of the housing 10 and is connected to the master control module 20. The light source control button 122 is configured to control the light source 110 to be turned on or to be turned off. The user may determine whether to use the light source 110 according to a usage environment, such that power consumption of the nail grinder 1000 may be saved. In another embodiment, activation of the light source 110 may be synchronously turned on when the drive assembly 30 is started to operate. In this way, operations are simplified, and the user may use the nail grinder 1000 conveniently.

[0071] It should be understood that the above embodiments are described to illustrate technical solutions of the present disclosure, and does not limit the present disclosure. Any ordinary skilled person in the art may modify or replace some of the technical features with equivalent ones based on the technical solution recorded in the above embodiments. All such modifications and replacements shall fall within the scope of the appended claims of the present disclosure.