Hair trimmer

Abstract

The utility model discloses a hair trimmer, which relates to the field of nursing appliances and is simple in structure and stable in use. The hair trimmer comprises a motor, a knife rest and a first elastic component and further comprises a first coupling piece and a second coupling piece, the knife rest is movably connected with the first coupling piece, the first coupling piece and the knife rest synchronously rotate and can relatively move in the axial direction, the second coupling piece and the first coupling piece are connected in an inserted mode in the axial direction, and the second coupling piece and the first coupling piece synchronously rotate. The first coupling piece is connected with the motor; the knife rest comprises a first buckling part, the first coupling part comprises a second buckling part, the first buckling part and the second buckling part are in concave-convex connection, the first elastic part is arranged between the knife rest and the first coupling part, and the first elastic part is connected with the first buckling part and the second buckling part; the first coupling piece further comprises a first positioning part, the second coupling piece is provided with a second positioning part, and the first positioning part and the second positioning part are connected in an inserted mode. And a rotating shaft of the motor is sleeved with the second coupling piece.

Description

Technical Field

[0001] The utility model relates to the field of nursing appliances, in particular to a hair trimmer. Background Art

[0002] There are many hair trimmers, such as a nose hair trimmer, which is a tool for trimming nose hair.

[0003] The utility model patent with application number CN201920896513.3 discloses an elastic rotary nose hair trimmer, which includes a movable blade assembly and a cylindrical fixed blade, the fixed blade is provided with a groove-shaped cutting edge, the movable blade assembly includes a positioning member and at least one pair of movable blades, each pair of movable blades is arranged on the positioning member, the fixed blade is sleeved on the movable blade, the positioning member is provided with a blade embedding hole, the blade embedding hole has a front hole wall and a rear hole wall, the front hole wall is provided with a front limiting groove, the rear hole wall is provided with a rear limiting groove, the movable blade is arranged in the blade embedding hole and includes blade 1 and blade 2, blade 1 is provided with an elastic locking tongue 1, blade 2 is provided with an elastic locking tongue 2, and a reset spring is also abutted between blade 1 and blade 2 to limit the two from approaching. The trimmer changes the specific structure of positioning the movable blade, so that the problem of wear and tear of the positioning structure will not occur after multiple replacement and installation of the movable blade, and the movement stroke of the movable blade will not change, the trimming effect is better, and the service life is longer.

[0004] The rotation of the movable blade assembly of the above-mentioned nose hair trimmer is not stable enough and needs to be improved. Summary of the invention

[0005] The utility model aims to provide a hair trimmer which has a simple structure and is stable in use.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a hair trimmer, including a motor, a blade holder and a first elastic component, and also including a first coupling and a second coupling, the blade holder is movably connected to the first coupling, the first coupling and the blade holder rotate synchronously and the two can move relative to each other in the axial direction, the second coupling and the first coupling are axially plugged in, the second coupling and the first coupling rotate synchronously, and the first coupling is connected to the motor; the blade holder includes a first buckle portion, the first coupling includes a second buckle portion, the first buckle portion and the second buckle portion are connected in a concave-convex manner, the first elastic component is arranged between the blade holder and the first coupling, and the first elastic component is respectively connected to the first buckle portion and the second buckle portion; the first coupling also includes a first positioning portion, the second coupling is provided with a second positioning portion, the first positioning portion and the second positioning portion are plugged in and connected; the second coupling is sleeved on the rotating shaft of the motor.

[0007] In some embodiments of the utility model, the first buckling part includes a shaft ring and a limit block, two transversely arranged guide grooves are formed between the limit block and the shaft ring, the two guide grooves are arranged front to back oppositely, and the two guide grooves are each provided with an arc-shaped groove opened along the axial direction, and the second buckling part includes two guide protrusions, the two guide protrusions are arranged front to back oppositely, and the two guide protrusions are each provided with an arc-shaped convex column, and a notch is provided between the two guide protrusions; the two guide protrusions are correspondingly matched with the two guide grooves, the limit block is matched with the notch, the arc-shaped convex column is matched with the arc-shaped groove, and the arc-shaped convex column can slide axially in the arc-shaped groove; the two guide protrusions can slide back and forth between the shaft ring and the limit block.

[0008] In some embodiments of the present utility model, a positioning shaft is provided on the limit block, the first elastic component is arranged in the notch, and one end of the first elastic component is connected to the positioning shaft.

[0009] In some embodiments of the present invention, propeller blades are arranged on the outer periphery of the first coupling.

[0010] In some embodiments of the utility model, the tool holder is provided with at least one pair of blades that can be extended and retracted in the radial direction, and the tool holder is provided with a slot, in which the blades are movably arranged.

[0011] In some embodiments of the present invention, the pair of blades are connected via a second elastic component, and the acting force direction of the second elastic component is parallel to the radial direction.

[0012] In some embodiments of the utility model, a mesh cover and a machine base are further included, the motor is arranged in the machine base, the knife holder and the blade are both arranged in the mesh cover, and the mesh cover is detachably connected to the machine base.

[0013] In some embodiments of the utility model, the mesh cover is plugged into the base, a fixing sleeve is disposed outside the mesh cover, and the fixing sleeve is screwed to one end of the base to fix the mesh cover.

[0014] In some embodiments of the present invention, the mesh cover is in the shape of a bullet head.

[0015] In some embodiments of the present invention, the mesh cover has a hollow structure.

[0016] Compared with the prior art, the advantages of the utility model are: a first coupling member and a second coupling member are added between the tool holder and the motor, the motor is transmitted through the second coupling member, the first coupling member and the tool holder in turn, the first coupling member and the tool holder are movably connected, so that the two can slide relative to each other in the axial direction, compared with the tool holder directly connected to the motor, the first coupling member and the tool holder are connected in a concave-convex manner, and there is a certain degree of limit between the two, which avoids slipping during rotation and makes the rotation stable; in addition, the second coupling member and the first coupling member are plug-connected, so that the connection between the motor and the tool holder is detachable, which is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the connection structure between the tool holder and the motor;

[0019] Figure 3 It is a partial structural sectional view of the utility model;

[0020] Figure 4 This is a schematic diagram of the utility model;

[0021] Figure 5 is a schematic diagram of the structure of the first coupling;

[0022] Figure 6 It is a schematic diagram of the structure of the second coupling.

[0023] In the figure: 1, motor; 2, tool holder; 3, first elastic component; 4, first coupling; 5, second coupling; 21, first buckle; 41, second buckle; 42, first positioning; 51, second positioning; 211, collar; 212, limit block; 213, guide groove; 214, arc-shaped groove; 411, guide protrusion; 412, notch; 413, arc-shaped protrusion; 215, positioning shaft; 43, propeller blade; 6, blade; 7, second elastic component; 8, mesh cover; 9, machine base; 10, fixing sleeve. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0027] The terms "including" and "having" and any variations thereof in the specification and claims of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0028] like Figure 1-Figure 6 As shown, a hair trimmer includes a motor 1, a blade holder 2, a first coupling 4 and a second coupling 5. The rotating shaft on the motor 1 is sleeved with the second coupling 5, and is sequentially connected to the first coupling 4 and the blade holder 2. The blade holder 2 is movably connected with the first coupling 4, so that the blade holder 2 and the first coupling 4 can move relative to each other along the axial direction of the rotating shaft, so that the blade holder 2 can move a certain distance in the axial direction. It is worth noting that the first buckle 21 on the blade holder 2 is connected with the second buckle 41 on the first coupling 4 in a concave-convex manner, so that the blade holder 2 and the first coupling 4 rotate synchronously when rotating. The second coupling 5 is plugged into the first coupling 4 along the axial direction of the rotating shaft, and the connection between the second coupling 5 and the first coupling 4 is detachable. The two rotate synchronously when connected. A first elastic component 3 is arranged between the tool holder 2 and the first coupling member 4. The first elastic component 3 is connected to the first buckle portion 21 and the second buckle portion 41 respectively. The first elastic component 3 includes but is not limited to a spring. The first elastic component 3 acts on the tool holder 2 and the first coupling member 4 respectively so that the two can be reset after movement; the first coupling member 4 also includes a first positioning portion 42, and the second coupling member 5 is provided with a second positioning portion 51. The first positioning portion 42 is plugged into the second positioning portion 51.

[0029] In the above structure: a first coupling 4 and a second coupling 5 are added between the tool holder 2 and the motor 1, and the motor 1 realizes transmission through the second coupling 5, the first coupling 4 and the tool holder 2 in turn, and the first coupling 4 is movably connected to the tool holder 2 so that the two can slide relative to each other in the axial direction. Compared with the tool holder 2 directly connected to the motor 1, the first coupling 4 and the tool holder 2 are connected in a concave-convex manner, and there is a certain degree of limitation between the two to avoid slipping during rotation and make the rotation stable; in addition, the second coupling 5 and the first coupling 4 are plug-in connected, so that the connection between the motor 1 and the tool holder 2 is detachable, which is convenient for maintenance.

[0030] In order to realize the movable connection between the first coupling member 4 and the tool holder 2, specifically, the first buckling part 21 includes a shaft ring 211 and a limit block 212, two transversely arranged guide grooves 213 are formed between the limit block 212 and the shaft ring 211, the two guide grooves 213 are arranged front to back relative to each other, and the two guide grooves 213 are each provided with an arcuate groove 214 opened along the axial direction, and the second buckling part 41 includes two guide protrusions 411, the two guide protrusions 411 are arranged front to back relative to each other, the two guide protrusions 411 are each provided with an arcuate convex column 413, and a notch 412 is provided between the two guide protrusions 411; the two guide protrusions 411 are correspondingly matched with the two guide grooves 213, the limit block 212 is matched with the notch 412, the arcuate convex column 413 is matched with the arcuate groove 214, and the arcuate convex column 413 can slide axially in the arcuate groove 214; the two guide protrusions 411 can slide back and forth between the shaft ring 211 and the limit block 212.

[0031] In order to realize the assembly of the first elastic component 3 , specifically, a positioning shaft 215 is provided on the limiting block 212 , the first elastic component 3 is arranged in the notch 412 , and one end of the first elastic component 3 is connected to the positioning shaft 215 .

[0032] In order to further improve the rotation stability, specifically, propeller blades 43 are arranged on the outer periphery of the first coupling 4 .

[0033] Specifically, at least one pair of blades 6 that can be extended and retracted in the radial direction is disposed on the blade holder 2, and a slot is disposed on the blade holder 2, in which the blades 6 are movably disposed.

[0034] In order to realize the extension and retraction of the blade 6, specifically, a pair of blades 6 are connected by a second elastic component 7, and the force direction of the second elastic component 7 is parallel to the radial direction.

[0035] Specifically, it also includes a mesh cover 8 and a machine base 9. The motor 1 is arranged in the machine base 9. The blade holder 2 and the blade 6 are both arranged in the mesh cover 8. The mesh cover 8 and the machine base 9 are detachably connected.

[0036] Specifically, the mesh cover 8 is plugged into the base 9 , and a fixing sleeve 10 is disposed outside the mesh cover 8 . The fixing sleeve 10 is screwed to one end of the base 9 to fix the mesh cover 8 .

[0037] Specifically, the mesh cover 8 is in the shape of a bullet head, and has a hollow structure.

[0038] The above describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A hair trimmer, comprising a motor (1), a blade holder (2) and a first elastic component (3), characterized in that: The tool holder (2) further comprises a first coupling member (4) and a second coupling member (5); the tool holder (2) is movably connected to the first coupling member (4); the first coupling member (4) and the tool holder (2) rotate synchronously and the two can move relative to each other in the axial direction; the second coupling member (5) and the first coupling member (4) are axially plugged into each other; the second coupling member (5) and the first coupling member (4) rotate synchronously; the first coupling member (4) is connected to the motor (1); the tool holder (2) comprises a first buckle portion (21); the first coupling member (4) comprises a second buckle portion (41); the The first buckling portion (21) and the second buckling portion (41) are connected in a concave-convex manner; the first elastic component (3) is arranged between the tool holder (2) and the first coupling member (4); the first elastic component is respectively connected to the first buckling portion (21) and the second buckling portion (41); the first coupling member (4) also includes a first positioning portion (42); the second coupling member (5) is provided with a second positioning portion (51); the first positioning portion (42) and the second positioning portion (51) are plug-connected; the second coupling member (5) is sleeved on the rotating shaft of the motor (1).

2. A hair trimmer according to claim 1, characterized in that: The first buckle connection portion (21) comprises a shaft ring (211) and a limit block (212); two transversely arranged guide grooves (213) are formed between the limit block (212) and the shaft ring (211); the two guide grooves (213) are arranged front to back oppositely; the two guide grooves (213) are each provided with an arc-shaped groove (214) opened along the axial direction; the second buckle connection portion (41) comprises two guide protrusions (411); the two guide protrusions (411) are arranged front to back oppositely; the two guide protrusions (411) are each provided with an arc-shaped groove (214) opened along the axial direction. The arc-shaped protrusion (413) is provided with a notch (412) between the two guide protrusions (411); the two guide protrusions (411) are correspondingly matched with the two guide grooves (213), the limit block (212) is matched with the notch (412), the arc-shaped protrusion (413) is matched with the arc-shaped groove (214), and the arc-shaped protrusion (413) can slide axially in the arc-shaped groove (214); the two guide protrusions (411) can slide back and forth between the shaft ring (211) and the limit block (212).

3. A hair trimmer according to claim 2, characterized in that: The limit block (212) is provided with a positioning shaft (215), the first elastic component (3) is arranged in the notch (412), and one end of the first elastic component (3) is connected to the positioning shaft (215).

4. A hair trimmer according to claim 1, characterized in that: The outer periphery of the first coupling member (4) is provided with propeller blades (43).

5. A hair trimmer according to claim 1, characterized in that: The knife holder (2) is provided with at least one pair of blades (6) that can be extended and retracted in the radial direction. The knife holder (2) is provided with a slot, and the blades (6) are movably arranged in the slot.

6. A hair trimmer according to claim 5, characterized in that: The pair of blades (6) are connected via a second elastic component (7), and the acting direction of the second elastic component (7) is parallel to the radial direction.

7. A hair trimmer according to claim 5, characterized in that: It also comprises a mesh cover (8) and a machine base (9), wherein the motor (1) is arranged in the machine base (9), the blade holder (2) and the blade (6) are both arranged in the mesh cover (8), and the mesh cover (8) and the machine base (9) are detachably connected.

8. A hair trimmer according to claim 7, characterized in that: The mesh cover (8) is plugged into the machine base (9), and a fixing sleeve (10) is provided on the outer shell of the mesh cover (8). The fixing sleeve (10) is screwed to one end of the machine base (9) to fix the mesh cover (8).

9. A hair trimmer according to claim 7, characterized in that: The mesh cover (8) is in the shape of a bullet head.

10. A hair trimmer according to claim 7, characterized in that: The mesh cover (8) has a hollow structure.

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