Nail grinding device

Abstract

The utility model discloses a nail grinding device which comprises a shell, a nail grinding piece, a driving piece, a driving module, an overcurrent detection module and a control module, the nail grinding piece is rotationally arranged in the shell, the driving piece is arranged in the shell, and the driving piece is connected with the nail grinding piece so as to drive the nail grinding piece to rotate. The driving module is connected with the driving piece to form at least part of driving branches, the driving branches are used for being connected with a power supply, the over-current detection module is connected with the driving module to detect driving current, and the control module is connected with the over-current detection module and the driving module. The control module can control the driving part to stop according to the driving current; the design automatically detects the driving current and timely controls the stop when the driving current is too large, the use is safe and reliable, and the durability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of beauty and makeup instruments, in particular to a nail grinder. Background Art

[0002] In the existing electric nail grinder, the nail grinding part can contact with the user's nail and rotate itself to achieve the effect of nail grinding. However, during the nail grinding process, if the pressing force of the nail on the nail grinding part is too large, the nail grinding part will be blocked from rotating. The blocked rotation will cause the driving current of the driving part to increase, and the driving part will generate more heat, thus causing damage to the driving part. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a nail grinder, which can automatically detect the driving current and timely control the stop when the driving current is too large, is safe and reliable to use, and improves the durability.

[0004] A nail grinder according to an embodiment of the first aspect of the utility model includes: a housing; a nail grinding part rotatably arranged in the housing; a driving part arranged in the housing, the driving part being connected to the nail grinding part to drive the nail grinding part to rotate; a driving module connected to the driving part to form at least part of a driving branch, the driving branch being used for connecting to a power supply; an overcurrent detection module connected to the driving module to detect the driving current; and a control module respectively connected to the overcurrent detection module and the driving module, the control module being able to control the driving part to stop according to the driving current.

[0005] A nail grinder according to an embodiment of the utility model has at least the following beneficial effects:

[0006] For the nail grinder of the utility model, the user can hold the housing, the control module can drive the driving part to operate through the driving module, the driving part drives the nail grinding part to rotate, the user can press the nail against the nail grinding part, and the nail grinding part can rotate and grind the nail. If the pressing force of the nail on the nail grinding part is too large, causing the driving part to be blocked from rotating and the driving current of the driving part to increase, the overcurrent detection module detects the driving current, and the control module timely controls the driving part to stop when the driving current is too large, preventing damage to the driving part. This design automatically detects the driving current and timely controls the stop when the driving current is too large, is safe and reliable to use, and improves the durability.

[0007] According to some embodiments of the utility model, the overcurrent detection module includes a second-order filtering detection unit, the input end of the second-order filtering detection unit is connected to the driving module, the grounding end of the second-order filtering detection unit is grounded, and the output end of the second-order filtering detection unit is connected to the control module.

[0008] According to some embodiments of the present utility model, the second-order filtering detection unit includes a resistor R14, a resistor R19, and a capacitor C7. One end of the resistor R14 is respectively connected to one end of the resistor R19 and the driving module. The other end of the resistor R19 is respectively connected to one end of the capacitor C7 and the control module. The other end of the resistor R14 and the other end of the capacitor C7 are grounded.

[0009] According to some embodiments of the present utility model, the driving module includes a forward and reverse driving unit. The forward and reverse driving unit is connected to the driving member so that the nail grinding member can have at least a first working state and a second working state. Wherein, in the first working state, the nail grinding member rotates in a first clockwise direction, and in the second working state, the nail grinding member rotates in a second clockwise direction. The first clockwise direction and the second clockwise direction are opposite to each other.

[0010] According to some embodiments of the present utility model, the forward and reverse driving unit includes a first switching tube Q2 of a semiconductor, a second switching tube Q3 of a semiconductor, a third switching tube Q4 of a semiconductor, and a fourth switching tube Q5 of a semiconductor. The input ends of the first switching tube Q2 and the second switching tube Q3 are connected. The output end of the first switching tube Q2 is respectively connected to one pole of the driving member and the input end of the third switching tube Q4. The output end of the second switching tube Q3 is respectively connected to the other pole of the driving member and the input end of the fourth switching tube Q5. The output end of the third switching tube Q4 is respectively connected to the output end of the fourth switching tube Q5 and the input end of the second-order filtering detection unit. The control module is respectively connected to the controlled ends of the first switching tube Q2, the second switching tube Q3, the third switching tube Q4, and the fourth switching tube Q5.

[0011] According to some embodiments of the present utility model, a forward rotation button and a reverse rotation button are provided on the housing. The control module is respectively connected to the forward rotation button and the reverse rotation button.

[0012] According to some embodiments of the present utility model, the nail grinding member is columnar, a grinding part is provided at the head end of the nail grinding member, and the driving member is connected to the tail end of the nail grinding member.

[0013] According to some embodiments of the present utility model, the housing is in a long handle shape. An installation opening is provided at one end of the housing. The nail grinding member is located at one end of the housing, and the driving member passes through the installation opening and is connected to the nail grinding member.

[0014] According to some embodiments of the present utility model, a collar is provided at one end of the housing. The collar is sleeved on the nail grinding member and the grinding part protrudes from the collar.

[0015] According to some embodiments of the present utility model, the nail grinder further includes a prompting module, and the control module is connected to the prompting module so as to be able to control the prompting module to give an alarm according to the driving current.

[0016] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be learned through the practice of the present utility model. Description of the Drawings

[0017] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0018] Figure 1 is a three-dimensional schematic diagram of one embodiment of the nail grinder of the present utility model;

[0019] Figure 2 is an internal structure schematic diagram of one embodiment of the nail grinder of the present utility model;

[0020] Figure 3 is a circuit diagram of the control module of one embodiment of the nail grinder of the present utility model;

[0021] Figure 4 is a circuit diagram of the power voltage regulating module of one embodiment of the nail grinder of the present utility model;

[0022] Figure 5 is a circuit schematic diagram of the driving module and the overcurrent detection module of one embodiment of the nail grinder of the present utility model;

[0023] Figure 6 is a circuit schematic diagram of the prompting module of one embodiment of the nail grinder of the present utility model.

[0024] Reference Signs:

[0025] housing 100; collar 110; nail grinding member 200; grinding portion 210; driving member 300; driving module 400; overcurrent detection module 500; control module 600; energy storage battery 710; power voltage regulating module 720; forward rotation button 730; reverse rotation button 740; prompting module 750. Detailed Embodiments

[0026] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0027] In the description of the present utility model, it should be understood that when it comes to orientation descriptions, for example, terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0028] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the original number, and understandings such as "above", "below", "within", etc. include the original number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] As Figure 1-6 shown, a nail grinder according to an embodiment of the first aspect of the present utility model includes a housing 100, a nail grinding member 200, a driving member 300, a driving module 400, an overcurrent detection module 500, and a control module 600. The nail grinding member 200 is rotatably disposed in the housing 100, the driving member 300 is disposed in the housing 100, the driving member 300 is connected to the nail grinding member 200 to be able to drive the nail grinding member 200 to rotate, the driving module 400 is connected to the driving member 300 to form at least part of a driving branch, the driving branch is used to be connected to a power supply, the overcurrent detection module 500 is connected to the driving module 400 to detect the driving current, the control module 600 is respectively connected to the overcurrent detection module 500 and the driving module 400, and the control module 600 can control the driving member 300 to stop according to the driving current.

[0031] Among them, the housing 100 can be in a long handle shape for easy user grip, and the outer peripheral surface of the housing 100 can be provided with a recess for easy grasping by the user's fingers. The control module 600 includes a processor such as an MCU or a CPU and its associated circuits. The driving member 300 can be a motor or a rotary cylinder, and the driving shaft of the driving member 300 is connected to the nail grinding member 200. As Figure 2 , 4 shown, an energy storage battery 710 and a power voltage regulation module 720 can also be provided inside the housing 100. The energy storage battery 710 serves as a power supply. The input end of the power voltage regulation module 720 is connected to the energy storage battery 710 to modulate the power supply voltage output by the energy storage battery 710, and the output end of the power voltage regulation module 720 outputs a suitable driving voltage to provide to the driving branch.

[0032] For the nail grinder of the present utility model, the user can hold the housing 100, and the control module 600 can drive the driving member 300 to operate through the driving module 400. The driving member 300 operates to drive the nail grinding member 200 to rotate. The user can press the nail against the nail grinding member 200, and the nail grinding member 200 can rotate and grind the nail. If the pressing force of the nail against the nail grinding member 200 is too large, resulting in the driving member 300 being blocked, the driving current of the driving member 300 increases. The overcurrent detection module 500 detects the driving current, and the control module 600 timely controls the driving member 300 to stop when the driving current is too large, preventing the driving member 300 from being damaged. This design automatically detects the driving current and timely controls to stop when the driving current is too large, making it safe and reliable to use and improving the durability.

[0033] In some embodiments of the present utility model, as Figure 5 shown, the overcurrent detection module 500 includes a second-order filtering detection unit. The input end of the second-order filtering detection unit is connected to the driving module 400, the grounding end of the second-order filtering detection unit is grounded, and the output end of the second-order filtering detection unit is connected to the control module 600.

[0034] The second-order filtering detection unit can be connected to the driving branch. One end of the driving branch is connected to the power supply. The driving current passes through the driving module 400 and the driving member 300, and then passes through the second-order filtering detection unit and is grounded. The second-order filtering detection unit can form a signal representing the magnitude of the driving current and output it to the control module 600.

[0035] Specifically, as Figure 5 shown, the second-order filtering detection unit includes a resistor R14, a resistor R19, and a capacitor C7. One end of the resistor R14 is respectively connected to one end of the resistor R19 and the driving module 400. The other end of the resistor R19 is respectively connected to one end of the capacitor C7 and the control module 600. The other end of the resistor R14 and the other end of the capacitor C7 are grounded.

[0036] The driving current passes through the driving module 400 and the driving member 300 and then flows through the resistor R14, forming a terminal voltage on the resistor R14 that characterizes the magnitude of the driving current. Then, after filtering and voltage stabilization through the resistor R19 and the capacitor C7, it is input into the control module 600. The control module 600 analyzes the feedback signal of the terminal voltage to know the magnitude of the driving current.

[0037] In some embodiments of the present invention, the driving module 400 includes a forward and reverse driving unit, and the forward and reverse driving unit is connected to the driving member 300 so that the nail grinding member 200 can have at least a first working state and a second working state. Among them, in the first working state, the nail grinding member 200 rotates in a first clockwise direction, and in the second working state, the nail grinding member 200 rotates in a second clockwise direction, and the first clockwise direction and the second clockwise direction are opposite to each other.

[0038] The driving module 400 can drive the driving member 300 to switch between forward rotation and reverse rotation, so that the nail grinding member 200 can switch between the first working state and the second working state. The nail grinding member 200 has rotational states in the first clockwise direction and the second clockwise direction that are opposite to each other, which is more conducive for users to choose a suitable grinding direction to grind their nails according to their own needs.

[0039] Specifically, as Figure 5 shown, the forward and reverse driving unit includes a first switching transistor Q2 of a semiconductor, a second switching transistor Q3 of a semiconductor, a third switching transistor Q4 of a semiconductor, and a fourth switching transistor Q5 of a semiconductor. The input end of the first switching transistor Q2 and the input end of the second switching transistor Q3 are connected. The output end of the first switching transistor Q2 is respectively connected to one pole of the driving member 300 and the input end of the third switching transistor Q4. The output end of the second switching transistor Q3 is respectively connected to the other pole of the driving member 300 and the input end of the fourth switching transistor Q5. The output end of the third switching transistor Q4 is respectively connected to the output end of the fourth switching transistor Q5 and the input end of the second-order filtering and detection unit. The control module 600 is respectively connected to the controlled ends of the first switching transistor Q2, the second switching transistor Q3, the third switching transistor Q4, and the fourth switching transistor Q5.

[0040] When the control module 600 can output control signals to respectively control the on-off of the first switching transistor Q2, the second switching transistor Q3, the third switching transistor Q4, and the fourth switching transistor Q5,

[0041] When the first switch tube Q2 and the fourth switch tube Q5 are controlled to be turned on, and the second switch tube Q3 and the third switch tube Q4 are turned off, a first direction current is formed passing through the driving member 300, and the driving member 300 drives the nail grinding member 200 to rotate along the first clockwise direction. When the first switch tube Q2 and the fourth switch tube Q5 are controlled to be turned off, and the second switch tube Q3 and the third switch tube Q4 are controlled to be turned on, a second direction current is formed passing through the driving member 300, and the driving member 300 drives the nail grinding member 200 to rotate along the second clockwise direction. The first direction current and the second direction current are opposite to each other.

[0042] In some embodiments of the present invention, a forward button 730 and a reverse button 740 are provided on the housing 100 , and the control module 600 is connected to the forward button 730 and the reverse button 740 , respectively.

[0043] The user can operate the forward button 730 to form a control instruction, and the control module 600 controls the driving member 300 to drive the nail grinding member 200 to rotate forward according to the control instruction. The user can also operate the reverse button 740 to form a control instruction, and the control module 600 controls the driving member 300 to drive the nail grinding member 200 to rotate reversely according to the control instruction.

[0044] In some embodiments of the present invention, Figure 1 As shown, the nail grinding member 200 is columnar, and a grinding portion 210 is provided at the head end of the nail grinding member 200. The driving member 300 is connected to the tail end of the nail grinding member 200. The columnar nail grinding member 200 is convenient for connecting with the driving member 300 located in the shell 100 and rotating around the length direction. The grinding portion 210 can be a frosted surface provided on the columnar end face, which is convenient for the user's nails to contact.

[0045] In some embodiments of the present invention, Figure 1 As shown, a mounting opening is provided at one end of the shell 100 , the nail grinding component 200 is located at one end of the shell 100 , and the driving component 300 passes through the mounting opening and is connected to the nail grinding component 200 .

[0046] Specifically, the driving shaft of the driving member 300 extends from the installation opening to the outside, and then is connected to the nail grinding member 200, which can prevent nail powder from entering the housing 100 during the grinding process as much as possible.

[0047] In some embodiments of the present invention, Figure 2As shown, one end of the housing 100 is provided with a collar 110. The collar 110 is sleeved on the nail grinding member 200 and the grinding portion 210 is exposed from the collar 110. The collar 110 is sleeved on the outer periphery of the nail grinding member 200, and the grinding portion 210 is exposed from the collar 110. Other parts of the collar 110 are located within the collar 110, which is not likely to come into contact with a person's hand or external objects, preventing damage to a person's hand or external objects caused by contact during rotation.

[0048] In some embodiments of the present invention, as Figure 1 , 2 , as shown in FIG. 6, the nail grinder further includes a reminder module 750. The control module 600 is connected to the reminder module 750 to be able to control the reminder module 750 to give an alarm according to the driving current. The reminder module 750 may include an LED lamp group or a buzzer. The LED lamp group may be composed of multiple LED lamp beads of different colors. Different colored LED lamp beads can be controlled to light up according to the magnitude of the driving current, or the buzzer can be controlled to emit an alarm sound when the driving current is too large.

[0049] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0050] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A nail grinder, characterized in that, Comprising: A housing; A nail grinding member rotatably disposed in the housing; A driving member disposed in the housing, the driving member being connected to the nail grinding member to be able to drive the nail grinding member to rotate; A driving module connected to the driving member to form at least part of a driving branch, the driving branch being used for connection to a power supply; An overcurrent detection module connected to the driving module to detect a driving current; A control module connected to the overcurrent detection module and the driving module respectively, the control module being able to stop the driving member according to the driving current.

2. The nail grinder according to claim 1, wherein: The overcurrent detection module includes a second-order filtering detection unit, an input end of the second-order filtering detection unit is connected to the driving module, a grounding end of the second-order filtering detection unit is grounded, and an output end of the second-order filtering detection unit is connected to the control module.

3. The nail grinder according to claim 2, wherein: The second-order filtering detection unit includes a resistor R14, a resistor R19 and a capacitor C7. One end of the resistor R14 is connected to one end of the resistor R19 and the driving module respectively. The other end of the resistor R19 is connected to one end of the capacitor C7 and the control module respectively. The other end of the resistor R14 and the other end of the capacitor C7 are grounded.

4. A nail grinder according to claim 2, characterized in that: The driving module includes a forward and reverse driving unit, the forward and reverse driving unit being connected to the driving member to be able to make the nail grinding member have at least a first working state and a second working state. Wherein, in the first working state, the nail grinding member rotates in a first clockwise direction, and in the second working state, the nail grinding member rotates in a second clockwise direction, and the first clockwise direction and the second clockwise direction are opposite to each other.

5. The nail grinder according to claim 4, characterized in that: The forward and reverse driving unit includes a first switching tube Q2 of a semiconductor, a second switching tube Q3 of a semiconductor, a third switching tube Q4 of a semiconductor and a fourth switching tube Q5 of a semiconductor. An input end of the first switching tube Q2 and an input end of the second switching tube Q3 are connected. An output end of the first switching tube Q2 is connected to one pole of the driving member and an input end of the third switching tube Q4 respectively. An output end of the second switching tube Q3 is connected to the other pole of the driving member and an input end of the fourth switching tube Q5 respectively. An output end of the third switching tube Q4 is connected to an output end of the fourth switching tube Q5 and an input end of the second-order filtering detection unit respectively. The control module is connected to a controlled end of the first switching tube Q2, a controlled end of the second switching tube Q3, a controlled end of the third switching tube Q4 and a controlled end of the fourth switching tube Q5 respectively.

6. The nail grinder according to claim 4, characterized in that: A forward rotation button and a reverse rotation button are provided on the housing, and the control module is connected to the forward rotation button and the reverse rotation button respectively.

7. The nail grinder according to claim 1, wherein: The nail grinding member is columnar, a grinding portion is provided at a head end of the nail grinding member, and the driving member is connected to a tail end of the nail grinding member.

8. The nail grinder according to claim 7, wherein: The housing is in a long handle shape, an installation port is provided at one end of the housing, the nail grinding member is located at one end of the housing, and the driving member passes through the installation port and is connected to the nail grinding member.

9. The nail grinder according to claim 8, wherein: A collar is provided at one end of the housing, the collar is sleeved on the nail grinding member and the grinding portion protrudes from the collar.

10. A nail grinder according to claim 1, characterized in that, It further includes a prompting module, and the control module is connected to the prompting module so as to be able to control the prompting module to give an alarm according to the driving current.

Images