Electric nail clippers with protection mechanism

Abstract

The utility model discloses an electric nail clipper with a protection mechanism, which comprises a nail clipper body, a clipper head is arranged on the nail clipper body, a pressure detection device is arranged between the clipper head and the nail clipper body, and the pressure detection device switches on or switches off a clipper head driving circuit according to the pressed condition of the clipper head; according to the nail clipper, the pressure detection device is arranged between the clipper head and the nail clipper body, the clipper head needs to be pressed with certain strength during normal use, the pressure detection device is connected with the clipper head driving circuit, and then the clipper head can move to trim nails; when the force of touching and pressing the lips or the tongues is not enough to trigger the pressure detection device to switch on the tool bit driving circuit, the tool bit does not act, so that children are effectively protected, and injuries caused by accidents are avoided.

Description

Technical Field

[0001] This utility model relates to the field of electric nail clipper technology, specifically to an electric nail clipper with a protection mechanism. Background Technology

[0002] Electric nail clippers are personal care products that use electricity to assist users in trimming their nails. Current electric nail clippers mainly consist of a housing, a motor, and a cutting shaft. The nail is inserted into the housing through a nail inlet, where it is cut by the blades, thus trimming the nail.

[0003] Currently, electric nail clippers are relatively easy to control; simply press the power button to start them. However, once the electric nail clippers are in operation, there is a certain risk if young children use or play with them alone. All known cases of accidents involve accidental injury to the lips or tongue from the blades. Utility Model Content

[0004] To address the shortcomings of existing technologies, an electric nail clipper with a protective mechanism is proposed, which solves the problem in the background technology that there is a certain degree of danger if young children use or play with the electric nail clipper alone after it is started.

[0005] To achieve the above objectives, the present invention proposes the following technologies:

[0006] An electric nail clipper with a protection mechanism includes a nail clipper body, a blade head disposed on the nail clipper body, and a pressure detection device between the blade head and the nail clipper body. The pressure detection device connects or disconnects the blade head drive circuit based on the pressure applied to the blade head.

[0007] Furthermore, the pressure detection device includes a fixing structure for fixing the blade head and a linkage reset structure for moving in conjunction with the fixing structure. The blade head is disposed on the fixing structure, and the fixing structure moves with the blade head according to the force applied to the blade head, thereby driving the linkage reset structure to move. The linkage reset structure has a control connection relationship with a control switch disposed in the nail clipper body for controlling the blade head drive circuit, and the movement of the linkage reset structure is related to the switching action of the control switch.

[0008] Furthermore, the linkage reset structure has a reset structure. When the force on the cutter head disappears, the linkage reset structure is pushed by the reset structure to reset, thereby driving the cutter head on the fixed structure to reset.

[0009] Furthermore, the nail clipper body also includes a first power supply and a first control unit, and the first power supply, the first control unit and the control switch are connected to form a blade drive circuit.

[0010] Furthermore, the cutter head drive circuit also includes a first start / stop switch, which is signal-connected to the first control unit.

[0011] Furthermore, the pressure detection device includes a pressure sensor.

[0012] Furthermore, the pressure sensor is a thin-film pressure sensor.

[0013] Furthermore, the nail clipper body also includes a second power supply and a second control unit, which are connected to form a blade drive circuit.

[0014] Furthermore, the cutter head drive circuit also includes a second start / stop switch, which is signal-connected to the second control unit.

[0015] Furthermore, the second control unit includes a detection signal input terminal, and the pressure detection device includes a pressure sensor detection circuit, which includes:

[0016] The system includes a pressure sensor, an eleventh resistor, and an eleventh capacitor. One end of the pressure sensor is electrically connected to one end of the eleventh resistor, one end of the eleventh capacitor, and the detection signal input terminal, respectively. The other ends of the eleventh resistor and the eleventh capacitor are grounded.

[0017] Compared with the prior art, the comprehensive effects brought about by this utility model include:

[0018] (1) This application sets a pressure detection device between the blade head and the nail clipper body. During normal use, a certain amount of force is required to press the blade head to activate the pressure detection device and enable the blade head to move and trim the nails. When the force of touching and pressing with the lips or tongue is insufficient to trigger the pressure detection device to activate the blade head to activate the blade head to drive the circuit, the blade head will not move, thereby effectively protecting children and avoiding accidental injury.

[0019] (2) The blade assembly is designed as a press-movable structure. This structure is linked to the control switch and transmits the switch signal to the first control unit. When the blade is pressed, it causes the fixed structure to drive the linkage reset structure to move, so that the blade drive circuit can drive the blade to move. Children have less strength, so it is possible to avoid children touching the blade with their tongue or lips and causing injury.

[0020] (3) A pressure sensor is designed at the blade head. When in use, the blade head needs to be pressed down with a certain amount of force by the finger to trigger the signal change of the pressure sensor. The second control unit detects that the signal change reaches a certain amplitude before driving the blade head to rotate. The second control unit distinguishes between finger pressing and lip / tongue pressing by analyzing the difference in the amplitude of the pressure sensor signal change, thereby protecting the lips and tongue from contact with the blade head. Attached Figure Description

[0021] Figure 1 This is an exploded structural diagram of Embodiment 1 of the electric nail clipper with a protective mechanism of the present invention;

[0022] Figure 2 This is a cross-sectional view of Embodiment 1 of the electric nail clipper with a protective mechanism of the present invention;

[0023] Figure 3 This is an exploded structural diagram of Embodiment 2 of the electric nail clipper with a protective mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the circuit connection principle of the pressure sensor in Embodiment 2 of the electric nail clipper with protection mechanism of this utility model.

[0025] Illustration: 1. Nail clipper body; 2. Blade head; 3. Fixing structure; 4. Linkage and reset structure; 5. Arc-shaped groove; 6. Nail opening; 7. First start switch; 8. Stop block; 9. First power supply. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Terms such as "upper," "lower," "left," "right," and "top" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0028] like Figures 1 to 3 As shown, an electric nail clipper with a protection mechanism includes a nail clipper body 1, a blade head 2 disposed on the nail clipper body 1, and a pressure detection device between the blade head 2 and the nail clipper body 1. The pressure detection device connects or disconnects the blade head drive circuit based on the pressure applied to the blade head 2.

[0029] This application incorporates a pressure detection device between the blade head and the nail clipper body. During normal use, a certain amount of force is required to press the blade head to activate the pressure detection device and enable the blade head to move and trim the nails. If the force applied by touching or pressing with the lips or tongue is insufficient to trigger the pressure detection device and activate the blade head's drive circuit, the blade head will not move, thus effectively protecting children and preventing accidental injury.

[0030] In other preferred embodiments, the pressure detection device includes a fixing structure 3 for fixing the blade head 2 and a linkage reset structure 4 for moving in conjunction with the fixing structure 3. The blade head 2 is disposed on the fixing structure 3, and the fixing structure 3 moves with the blade head 2 according to the force applied to the blade head 2, thereby driving the linkage reset structure 4 to move. The linkage reset structure 4 has a control connection relationship with a control switch disposed in the nail clipper body 1 for controlling the blade head drive circuit, and the movement of the linkage reset structure 4 is related to the switching action of the control switch.

[0031] The blade assembly is designed as a press-activated structure. This structure is linked to the control switch and transmits the switch signal to the first control unit. When the blade is pressed, it causes the fixed structure 3 to drive the linkage reset structure 4, which in turn enables the blade drive circuit to drive the blade to move. Children have less strength, so this design avoids children touching the blade with their tongue or lips, which could cause injury.

[0032] In this embodiment, the linkage reset structure 4 has a reset structure. When the force on the cutter head 2 disappears, the linkage reset structure 4 is pushed by the reset structure to reset, thereby driving the cutter head 2 on the fixed structure 3 to reset.

[0033] In this embodiment, the nail clipper body 1 also includes a first power supply 9 and a first control unit. The first power supply 9, the first control unit, and the control switch are connected to form a blade drive circuit.

[0034] The control switch connects or disconnects the first power supply 9 from the first control unit, thereby determining whether the cutter head 2 operates based on the pressure applied to the control switch.

[0035] In this embodiment, the cutter head drive circuit also includes a first start / stop switch 7, which is signal-connected to the first control unit.

[0036] Preferably, a first power switch is connected between the first power supply 9 and the first control unit. The first power switch can be a mechanical switch type, such as a toggle switch, slide switch, rocker switch, or other equivalent button switch type. During use, the product is in standby mode when the first power switch is turned on / pressed. If the user then turns on / presses / touches the first start / stop switch 7, and the nail presses the blade head 2, the nail clipper body 1 will start working, and the blade head 2 will start rotating.

[0037] In other preferred embodiments, the pressure detection device is a pressure sensor RP1, preferably a thin-film pressure sensor.

[0038] This application incorporates a pressure sensor RP1 at the blade head 2. During normal use, pressing the blade head 2 assembly with a finger applies sufficient force to trigger a signal change in the pressure sensor RP1. The control unit detects when the signal change reaches a certain amplitude before driving the blade head 2 to rotate. The texture of the lips or tongue differs significantly from that of the fingers, being relatively softer, especially for children. The amplitude of the signal change generated by pressing the pressure sensor RP1 with the lips or tongue differs from that generated by pressing with the fingers, and is typically smaller. The control unit distinguishes between finger pressing and lip / tongue pressing based on the difference in the amplitude of the different signal changes in the pressure sensor RP1, thus protecting the lips and tongue from contact with the blade head 2.

[0039] The above solution effectively avoids the possibility of young children starting the nail clipper body 1 on their own, thus improving the product's safety for children.

[0040] In this embodiment, the nail clipper body 1 also includes a second power supply and a second control unit. The second power supply, the second control unit, and the pressure sensor RP1 are connected to form a blade head driving circuit. The blade head driving circuit also includes a second start / stop switch, which is signal-connected to the second control unit.

[0041] Please see Figure 4 Furthermore, the second control unit includes a detection signal input terminal PRESS ADC, and the pressure detection device includes a pressure sensor RP1 detection circuit, which includes:

[0042] The pressure sensor RP1, the eleventh resistor R11, and the eleventh capacitor C11 are provided. One end of the pressure sensor RP1 is electrically connected to one end of the eleventh resistor R11, one end of the eleventh capacitor C11, and the detection signal input terminal PRESS ADC. The other ends of the eleventh resistor R11 and the eleventh capacitor C11 are grounded.

[0043] A second power switch is connected between the second power supply and the second control unit. During use, the device is first turned on by pressing and holding the second power switch, putting the nail clipper body 1 into standby mode 1. Then, the user needs to press and hold or touch the second start / stop switch to put the product into standby mode 2. If the user then presses the blade head 2 firmly with their finger, the pressure sensor RP1 mounted on the surface of the blade head 2 transmits a signal to the second control unit. Once the second control unit detects that the amplitude of this signal change reaches a certain value, the nail clipper body 1 will start working, and the blade head 2 will begin to rotate and trim.

[0044] If the second start / stop switch is lifted or not touched, the cutter head 2 will immediately stop rotating. Preferably, the second start / stop switch can be a mechanical tactile button switch, a touch button switch, or other equivalent button switch type. If the amplitude of the signal change of the pressure sensor RP1 on the surface of the cutter head 2 does not reach a certain value requirement, the cutter head 2 will also immediately stop rotating.

[0045] In this embodiment, an arc-shaped groove 5 is provided at one end of the nail clipper body 1, and a nail opening 6 is provided on the groove surface of the arc-shaped groove 5. The blade 2 is provided inside the nail opening 6. A second start / stop switch is provided at the top of the nail clipper body 1 for easy long press or touch. A second power switch is provided on the side of the nail clipper body 1.

[0046] Preferably, a stop block 8 is provided on the surface of the arc-shaped groove 5. The stop block 8 is installed above the nail opening 6. A cavity is provided inside the stop block 8, and at least one light is installed in the cavity. The light is connected to the control unit. The stop block 8 and the light provide illumination to the nail opening 6, which facilitates better nail trimming and checking whether the nail is trimmed neatly during normal use. Preferably, the lighting is synchronized with the operating status of the blade head 2.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "rotation", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] Although embodiments of the present invention have been shown and described in detail, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electric nail clipper with a protective mechanism, characterized in that, The device includes a nail clipper body, on which a cutting head is provided, and a pressure detection device is provided between the cutting head and the nail clipper body. The pressure detection device connects or disconnects the cutting head drive circuit when the cutting head is under pressure. The pressure detection device includes a pressure sensor; The nail clipper body also includes a second power supply and a second control unit, and the second power supply, the second control unit and the pressure sensor are connected to form a blade drive circuit; The second control unit includes a detection signal input terminal, and the pressure detection device includes a pressure sensor detection circuit, which includes: The system includes a pressure sensor, an eleventh resistor, and an eleventh capacitor. One end of the pressure sensor is electrically connected to one end of the eleventh resistor, one end of the eleventh capacitor, and the detection signal input terminal, respectively. The other ends of the eleventh resistor and the eleventh capacitor are grounded.

2. The electric nail clipper with a protection mechanism according to claim 1, characterized in that, The pressure detection device includes a fixing structure for fixing the blade head and a linkage reset structure for moving in conjunction with the fixing structure. The blade head is disposed on the fixing structure, and the fixing structure moves with the blade head according to the force applied to the blade head, thereby driving the linkage reset structure to move. The linkage reset structure has a control connection relationship with a control switch disposed in the nail clipper body for controlling the blade head drive circuit, and the action of the linkage reset structure is related to the switching action of the control switch.

3. An electric nail clipper with a protection mechanism according to claim 2, characterized in that, The linkage reset structure has a reset structure. When the force on the cutter head disappears, the linkage reset structure is pushed by the reset structure to reset, thereby driving the cutter head on the fixed structure to reset.

4. An electric nail clipper with a protection mechanism according to claim 2, characterized in that, The nail clipper body also includes a first power supply and a first control unit, and the first power supply, the first control unit and the control switch are connected to form a blade driving circuit.

5. An electric nail clipper with a protection mechanism according to claim 4, characterized in that, The cutter head drive circuit also includes a first start / stop switch, which is signal-connected to the first control unit.

6. An electric nail clipper with a protection mechanism according to claim 1, characterized in that, The pressure sensor is a thin-film pressure sensor.

7. An electric nail clipper with a protection mechanism according to claim 1, characterized in that, The cutter head drive circuit also includes a second start / stop switch, which is signal-connected to the second control unit.

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