Cutting assembly and electric nose hair trimmer

Abstract

The utility model belongs to the technical field of vibrissa trimmers, and particularly relates to a cutting assembly and an electric vibrissa trimmer, the cutting assembly comprises a fixed cutter and a movable cutter, the fixed cutter is internally provided with a containing cavity, the front end of the fixed cutter is provided with a first cutting groove, and the first cutting groove is I-shaped; the movable cutter is arranged in the containing cavity, the peripheral side of the movable cutter is attached to the inner wall of the containing cavity, a second cutting groove is formed in the front end of the movable cutter, the second cutting groove is located beside the first cutting groove, and the second cutting groove is in a V shape. The first cutting groove is arranged to be I-shaped, the second cutting groove is arranged to be V-shaped, when the movable cutter rotates relative to the fixed cutter, the contact positions of the second cutting groove and the first cutting groove are only few points, and compared with the prior art that the side edges of the two cutting grooves are completely contacted when the movable cutter and the fixed cutter are used, the pause feeling is effectively reduced, and the cutting efficiency is improved. The use is smoother, and the experience is better. Meanwhile, the second cutting groove is V-shaped, so that the vibrissa can be gathered at the bottom of the second cutting groove, and cutting is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of nose hair trimmers, and in particular relates to a cutting component and an electric nose hair trimmer. Background Art

[0002] A nose hair trimmer is a daily necessity that can quickly and safely trim the excessively long nose hair in the nasal cavity. A nose hair trimmer of conventional structure usually comprises a fixed blade, a movable blade and a motor, wherein the movable blade is arranged inside the fixed blade, and the motor drives the movable blade to rotate, thereby cutting the nose hair extending from the fixed blade.

[0003] The utility model patent with authorization announcement number CN218428460U discloses a nose hair trimming scissor head, which includes a columnar blade head seat with a blade head cavity inside, and a movable blade assembly, wherein the top end of the blade head seat is a nasal cavity insertion portion, and a nose hair insertion groove for nose hair to penetrate is formed on the nasal cavity insertion portion, and the movable blade assembly includes a movable blade seat and a movable blade, characterized in that: the nasal cavity insertion portion includes a connecting section extending toward the top along the extension direction of the blade head seat, and an arc section extending from the top of the connecting section toward the top and bending inward, the nose hair penetration groove is arranged on the arc section and / or the connecting section, the blade of the movable blade is respectively attached to the inner walls of the arc section and the connecting section, and the movable blade assembly also includes an elastic member for keeping the movable blade elastically attached to the inner wall of the blade head cavity along the columnar axial direction or / and radial direction. A nose hair trimmer with this structure uses a motor to drive the moving blade to rotate, and cooperates with the moving blade holder to cut the nose hair into pieces. However, the high-speed rotation of the moving blade will cause friction and heat, affecting the user experience. At the same time, the continuous and rapid friction between the moving blade and the inner wall of the moving blade holder will cause the moving blade to wear quickly, and its service life is short.

[0004] The utility model patent with authorization announcement number CN220826030U discloses a rotary cutting assembly, including a cylindrical fixed knife and a movable knife that match each other inside and outside, the movable knife includes a circular rotating column, the upper part of the rotating column is provided with a plurality of movable hair feeding grooves along the circumferential direction, the movable hair feeding grooves divide a plurality of movable cutting teeth on the rotating column, the top of the rotating column is provided with a groove that is concave downward and makes the movable cutting teeth change from small to large from top to bottom, the fixed knife is provided with a circular through hole that passes through from top to bottom, the rotating column and the circular through hole are rotatably matched, the upper part of the fixed knife is provided with a plurality of fixed hair feeding grooves along the circumferential direction, the fixed hair feeding grooves divide the upper part of the fixed knife into a plurality of fixed cutting teeth, and the upper end of the fixed cutting teeth is provided with a flange that protrudes inward and blocks the upper end surface of the movable cutting teeth from above. The nose hair trimmer of this structure cuts nose hair through the movable cutting teeth and the fixed cutting teeth, which reduces the wear of the movable knife, but the contact area between the movable knife and the fixed knife is large. When rotating at high speed, a more obvious sense of frustration will be generated, affecting the user experience. Therefore, it is necessary to improve the existing technology to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a cutting assembly and an electric nose hair trimmer, aiming to solve the technical problem in the prior art that electric nose hair trimmers produce a more obvious sense of frustration when rotating at high speed, affecting the user experience.

[0006] To achieve the above-mentioned purpose, the embodiment of the utility model provides a cutting assembly for use in an electric nose hair trimmer, comprising:

[0007] A fixed knife, wherein a receiving cavity is provided in the fixed knife, and a first cutting groove is provided at the front end of the fixed knife, and the first cutting groove is I-shaped;

[0008] The movable knife is arranged in the accommodating cavity, the outer peripheral side of the movable knife is in contact with the inner wall of the accommodating cavity, the front end of the movable knife is provided with a second cutting groove, the second cutting groove is located beside the first cutting groove, and the second cutting groove is V-shaped.

[0009] As a preferred solution, a guide groove is integrally extended from the bottom of the first cutting groove, a guide surface is arranged in the guide groove, and the height of the guide surface gradually decreases from the inside to the outside.

[0010] As a preferred solution, a groove is provided on the front end surface of the movable knife, and the groove is connected to each of the second cutting grooves.

[0011] As a preferred solution, a first convex portion is provided at the bottom of the fixed knife, a second convex portion is provided at the bottom of the movable knife, the movable knife extends forward into the accommodating cavity, and the front end surface of the second convex portion abuts against the rear end surface of the first convex portion.

[0012] As a preferred solution, a clearance groove is provided at the bottom of the movable knife, and the clearance groove is located on the front end surface of the second convex portion.

[0013] As a preferred solution, the width of the first cutting groove is 1.1-1.5 mm.

[0014] As a preferred solution, the V-shaped bending angle of the second cutting groove is 20°-30°.

[0015] An embodiment of the utility model also provides an electric nose hair trimmer, comprising: a shell, a motor, a power supply assembly and the cutting assembly; an installation cavity is provided in the shell; the motor is provided in the installation cavity; the power supply assembly is provided in the installation cavity and is electrically connected to the motor; the cutting assembly is provided on the front side of the motor, the fixed knife is fixed at the front end of the installation cavity, and the motor drives the movable knife to rotate in the accommodating cavity.

[0016] As a preferred solution, the motor is a differential motor.

[0017] As a preferred embodiment, the shell includes an outer shell, an inner shell and an upper shell; the installation cavity is arranged in the outer shell; the inner shell is arranged in the installation cavity, and the motor, the power supply component and the cutting component are all arranged in the inner shell; the upper shell is arranged at the front end of the outer shell.

[0018] The above one or more technical solutions in the cutting assembly and the electric nose hair trimmer provided by the embodiment of the utility model have at least one of the following technical effects:

[0019] The utility model sets the first cutting groove to be I-shaped and the second cutting groove to be V-shaped. When the movable knife rotates relative to the fixed knife, the second cutting groove contacts the first cutting groove at only a few points. Compared with the prior art in which the movable knife and the fixed knife are in full contact with each other during use, the utility model effectively reduces the sense of frustration, and the use is smoother and the experience is better. At the same time, setting the second cutting groove to be V-shaped can gather the nose hair at the bottom of the second cutting groove for easy cutting.

[0020] At the same time, the moving knife is driven by a differential motor. Compared with the high-speed motor drive in the prior art, the speed of the differential motor is slower, which can reduce the heat generated by the friction between the fixed knife and the moving knife and the wear of the fixed knife and the moving knife, reduce noise, and increase service life; at the same time, the torque of the differential motor is greater, which can increase the force when cutting nose hair, further reduce the sense of frustration during use, and there will be no pulling of nose hair or getting stuck by nose hair debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A schematic diagram of the overall structure of a cutting assembly provided in an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of the three-dimensional structure of an electric nose hair trimmer provided by an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of the partial structure of an electric nose hair trimmer provided by an embodiment of the utility model;

[0025] Figure 4 A cross-sectional view of an electric nose hair trimmer provided by an embodiment of the utility model;

[0026] Among them, the reference numerals in the figure are:

[0027] 100-housing; 101-mounting cavity; 110-outer shell; 120-inner shell; 130-upper shell;

[0028] 200-motor; 210-transfer part;

[0029] 300-power supply assembly; 310-battery frame; 320-battery; 330-charging interface;

[0030] 400-cutting assembly; 401-accommodating cavity; 402-first cutting groove; 403-second cutting groove; 404-groove; 405-guide groove; 406-guide surface; 407-avoidance groove; 410-fixed knife; 411-first convex part; 420-movable knife; 421-second convex part. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention 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, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0035] In one embodiment of the present invention, Figure 1-Figure 4 As shown, an electric nose hair trimmer is provided, comprising: a housing 100 , a motor 200 , a power supply assembly 300 and a cutting assembly 400 .

[0036] The shell 100 is provided with an installation cavity 101, and the installation cavity 101 runs through from front to back. Specifically, the shell 100 includes an outer shell 110, an inner shell 120 and an upper shell 130. The outer shell 110 is cylindrical or prismatic, and the installation cavity 101 is provided in the outer shell 110. In this embodiment, the outer shell 110 is in the shape of a regular quadrangular prism, and the four side edges are R-chamfered. The inner shell 120 is provided in the installation cavity 101, and the motor 200, the power supply assembly 300 and the cutting assembly 400 are all provided in the inner shell 120. The upper shell 130 is provided at the front end of the outer shell 110, and the outer peripheral side surfaces of the upper shell 130 are kept flush with the side surfaces of the outer shell 110.

[0037] The motor 200 is disposed in the installation cavity 101, and the motor 200 is fixed on the inner shell 120. A transfer member 210 is disposed between the motor 200 and the cutting assembly 400, the rear end of the transfer member 210 is fixed on the rotating shaft of the motor 200, and the front end of the transfer member 210 is connected to the cutting assembly 400, so as to avoid the problem of excessive kinetic energy caused by the direct connection between the motor 200 and the cutting assembly 400.

[0038] The power supply assembly 300 is disposed in the mounting cavity 101 and electrically connected to the motor 200, and is used to supply power to the motor 200. The power supply assembly 300 includes a battery frame 310, and the battery frame 310 is connected to the motor 200, and the battery frame 310 is used to place dry cells or storage batteries. In this embodiment, a storage battery 320 is disposed on the battery frame 310, and the power supply assembly 300 also includes a charging interface 330, and the charging interface 330 is connected to the battery frame 310, and is used to connect an external power source to charge the storage battery 320.

[0039] The cutting assembly 400 is arranged at the front side of the motor 200, and the cutting assembly 400 includes a fixed knife 410 and a movable knife 420. The fixed knife 410 is fixed to the front end of the mounting cavity 101, and a receiving cavity 401 is arranged in the fixed knife 410. A first cutting groove 402 is arranged at the front end of the fixed knife 410, and the first cutting groove 402 is I-shaped; the width of the first cutting groove 402 is 1.0-1.5mm, and is set to 1.1mm in this embodiment. The movable knife 420 is arranged in the receiving cavity 401, and the outer peripheral side of the movable knife 420 is in contact with the inner wall of the receiving cavity 401. A second cutting groove 403 is arranged at the front end of the movable knife 420, and the second cutting groove 403 is V-shaped, which can gather the nose hair at the bottom of the second cutting groove 403 for easy cutting. The V-shaped bending angle of the second cutting groove 403 is 20°-30°, and is set to 25° in this embodiment. The second cutting groove 403 is located beside the first cutting groove 402, and the motor 200 drives the movable knife 420 to rotate in the accommodating cavity 401 to cut the nose hair.

[0040] In the present embodiment, by setting the first cutting groove 402 to an I-shape and the second cutting groove 403 to a V-shape, when the movable knife 420 rotates relative to the fixed knife 410, the contact between the second cutting groove 403 and the first cutting groove 402 is only at a few points. Compared with the prior art in which the side edges of the movable knife and the fixed knife are in complete contact when in use, the sense of frustration is effectively reduced, and the use is smoother and the user experience is better.

[0041] In one embodiment of the utility model, the front end surface of the movable blade 420 is provided with a groove 404, and the groove 404 is connected to each of the second cutting grooves 403. When the electric nose hair trimmer is inserted into the nasal cavity, the nose hair spreads out to the circumference after contacting the bottom of the groove 406 and extends into the second cutting groove 403 to be cut. Furthermore, a guide groove 405 is integrally extended from the bottom of the first cutting groove 402, and a guide surface 406 is provided in the guide groove 405. The height of the guide surface 406 gradually decreases from the inside to the outside, and the nose hair is guided to pass through the second cutting groove 403 and the first cutting groove 402 and then extend out of the guide groove 405, so as to better cut the nose hair from the root and improve the trimming efficiency.

[0042] In one embodiment of the utility model, the motor 200 is a differential motor with a rotation speed of 20-60 rpm, and in this embodiment, it is set to 30 rpm. The differential motor drives the movable knife 420. Compared with the high-speed motor drive in the prior art, the differential motor has a slower rotation speed, which can reduce the heat generated by the friction between the fixed knife 410 and the movable knife 420 and the wear of the fixed knife 410 and the movable knife 420, reduce noise, and increase service life; at the same time, the differential motor has a larger torque, which can increase the force when cutting the nose hair, further reduce the sense of frustration during use, and will not pull the nose hair or be stuck by nose hair debris.

[0043] In one embodiment of the utility model, the bottom of the fixed knife 410 is provided with a first convex portion 411, and the bottom of the movable knife 420 is provided with a second convex portion 421. The movable knife 420 extends forward into the accommodating cavity 401, and the front end surface of the second convex portion 421 abuts against the rear end surface of the first convex portion 411 to prevent the movable knife 420 from escaping from the accommodating cavity 401. The bottom of the movable knife 420 is provided with an escape groove 407, and the escape groove 407 is located on the front end surface of the second convex portion 421. The escape groove 407 is used to collect hair debris that falls into the gap between the first cutting groove 402 and the second cutting groove 403. The front end surface of the second convex portion 421 fits with the escape groove 407 to prevent hair debris from entering the rotating shaft of the motor 200 and affecting the rotation effect.

[0044] In one embodiment of the utility model, the fixed knife 410 and the movable knife 420 are made of national standard S340 stainless steel to prevent the product from rusting due to sweat. At the same time, after long-term use, the fixed knife 410 and the movable knife 420 will cause the gap to increase due to wear. During production, the fixed knife 410 is annealed to keep the fixed knife 410 under stress tension. During long-term use, the fixed knife 410 will shrink inward, thereby reducing the gap between the fixed knife 410 and the movable knife 420.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting assembly for use in an electric nose hair trimmer, characterized in that: include: A fixed knife, wherein a receiving cavity is provided in the fixed knife, and a first cutting groove is provided at the front end of the fixed knife, and the first cutting groove is I-shaped; The movable knife is arranged in the accommodating cavity, the outer peripheral side of the movable knife is in contact with the inner wall of the accommodating cavity, the front end of the movable knife is provided with a second cutting groove, the second cutting groove is located beside the first cutting groove, and the second cutting groove is V-shaped.

2. The cutting assembly according to claim 1, characterized in that A groove is disposed on the front end surface of the movable knife, and the groove is connected to each of the second cutting grooves.

3. The cutting assembly according to claim 2, characterized in that: A guide groove is integrally extended from the bottom of the first cutting groove, a guide surface is arranged in the guide groove, and the height of the guide surface gradually decreases from the inside to the outside.

4. The cutting assembly according to any one of claims 1 to 3, characterized in that: The bottom of the fixed knife is provided with a first convex portion, the bottom of the movable knife is provided with a second convex portion, the movable knife extends forward into the accommodating cavity, and the front end surface of the second convex portion abuts against the rear end surface of the first convex portion.

5. The cutting assembly according to claim 4, characterized in that A clearance groove is provided at the bottom of the movable knife, and the clearance groove is located on the front end surface of the second convex portion.

6. The cutting assembly according to any one of claims 1 to 3, characterized in that: The width of the first cutting groove is 1.1-1.5 mm.

7. The cutting assembly according to any one of claims 1 to 3, characterized in that: The V-shaped bending angle of the second cutting groove is 20°-30°.

8. An electric nose hair trimmer, characterized in that: include: A housing, a motor, a power supply assembly, and a cutting assembly as described in any one of claims 1 to 7; An installation cavity is provided in the shell; the motor is provided in the installation cavity; the power supply component is provided in the installation cavity and is electrically connected to the motor; the cutting component is provided on the front side of the motor, the fixed knife is fixed at the front end of the installation cavity, and the motor drives the movable knife to rotate in the accommodating cavity.

9. The electric nose hair trimmer according to claim 8, characterized in that: The motor is a differential motor.

10. The electric nose hair trimmer according to claim 9, characterized in that: The housing comprises an outer shell, an inner shell and an upper shell; the installation cavity is arranged in the outer shell; the inner shell is arranged in the installation cavity, and the motor, the power supply component and the cutting component are all arranged in the inner shell; The upper shell is arranged at the front end of the outer shell.

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