WO2020155392A1

WO2020155392A1 - Hair cutting tool and cutting unit therefor

Info

Publication number: WO2020155392A1
Application number: PCT/CN2019/082351
Authority: WO
Inventors: 俞光美
Original assignee: 浙江朗威电器ke'ji有限公司
Priority date: 2019-01-29
Filing date: 2019-04-12
Publication date: 2020-08-06
Also published as: CN109822627A; CN109822627B; WO2020155392A8

Abstract

Disclosed are a hair cutting tool and a cutting unit therefor. The cutting unit comprises: a fixed cutter rest (2) mounted on a cutter base (1) and provided with a mounting through groove (21) with an upper portion and a lower portion communicating with each other; a fixed cutter (3) mounted on the fixed cutter rest (2) and provided with facial hair inlet groove holes (31) in the left side and the right side thereof; a movable cutter rest (4) movably arranged in the mounting through groove (21) of the fixed cutter rest (2) and capable of sliding back and forth along the mounting through groove (21); and a movable cutter (6) arranged below the movable cutter rest (4) and attached to the fixed cutter (3), wherein the left side and the right side of the movable cutter (6) are provided with movable cutter edges (61) corresponding to the facial hair inlet groove holes (31). The cutting unit has the advantages of being simple and compact in structure, and being convenient to assemble.

Description

A hair cutting appliance and its cutting unit Technical field

[0001] The present invention relates to a hair trimming device, in particular to a hair cutting appliance and a cutting unit thereof.

Background technique

[0002] Hair cutting appliances are used for human hair cutting, such as shaver, hair styler, hair clipper, etc.

[0003] Generally, a hair cutting appliance includes a body that can accommodate a motor and a cutting unit for hair cutting.

[0004] According to different cutting methods, the cutting unit usually includes a rotary cutting unit and a reciprocating cutting unit,

5 See there are reciprocating cutting units including knife holder, static knife holder, movable knife holder, static knife, and movable knife.

[0005] However, the existing cutting unit has a complicated structure and is troublesome to install.

Summary of the invention

technical problem

The solution to the problem

Technical solutions

[0006] In order to overcome the shortcomings of the background technology, the present invention provides a hair cutting appliance and a cutting unit thereof, which has a simple structure and is easy to install.

[0007] The technical solution adopted by the present invention: a cutting unit, including a knife holder; a stationary knife holder, installed on the knife holder, the stationary knife holder is provided with an installation through groove connected up and down; a stationary knife, installation On the static knife holder, the left and right sides are evenly provided with slotted holes; the movable knife holder is movably arranged in the installation slot of the static knife holder and can slide back and forth along the installation slot; the movable knife is arranged on the movable knife holder The lower part is attached to the static knife, and the left and right sides of the movable knife are provided with movable blades corresponding to the beard feeding slots.

[0008] At least one horizontally arranged sliding groove is formed on the movable tool holder, at least one positioning pin is provided on the side wall of the static tool holder, and the positioning pin is arranged through the sliding groove.

[0009] The bottom of the movable knife holder is provided with at least two positioning posts, and the movable knife is formed with positioning holes adapted to the positioning posts,

[0010] The movable knife is installed on the positioning column through the positioning hole, and an elastic structure is provided between the movable knife and the movable knife holder to drive the movable knife downward to fit the static knife. [0011] The elastic structure is an elastic sheet, and the elastic sheet and the movable knife are in an integrated structure.

[0012] The upper end of the elastic sheet is bent downward, and the elastic sheet is in contact with the bottom of the movable blade holder through its bent portion.

[0013] The inner side walls on the left and right sides of the installation through groove are provided with at least two limiting ribs, and the two side walls of the movable tool holder are in contact with the limiting ribs.

[0014] The upper ends of the left and right sides of the static tool holder are evenly provided with a plurality of clamping stations, and the tool holder is correspondingly provided with a plurality of clamping grooves, and the static tool holder is embedded in the tool holder from bottom to top, and passes through the clamping stations and the clamping grooves. Clamped with the tool holder.

[0015] The inner side walls of the front and rear sides of the knife holder are provided with guide ribs, and the front and rear sides of the static tool holder are provided with guide grooves that are adapted to the guide ribs.

[0016] A number of mounting bosses are evenly provided on the left and right sides of the static knife holder, and the inner side walls of the left and right sides of the knife holder are correspondingly provided with offset grooves; the static knife includes two mounting side plates, the mounting side The board is provided with a mounting hole adapted to the mounting boss, and the mounting side plate is inserted between the static tool holder and the tool seat, and is installed on the mounting boss through the mounting hole.

[0017] A hair cutting appliance includes a body and a connector for the above-mentioned cutting unit. One end of the connector is connected to the cutting unit, and the other end is detachably connected to the body.

The beneficial effects of the invention

Beneficial effect

[0018] The beneficial effects of the present invention are: the above solution is adopted, the structure is simple and compact, and the installation is convenient.

Brief description of the drawings

Description of the drawings

[0019] FIG. 1 is a schematic structural diagram of a hair cutting appliance according to an embodiment of the present invention.

[0020] FIG. 2 is a schematic structural diagram of a cutting unit and a connector according to an embodiment of the present invention.

[0021] FIG. 3 is a schematic structural diagram of a cutting unit according to an embodiment of the present invention.

[0022] FIG. 4 is a cross-sectional view of a cutting unit according to an embodiment of the present invention.

[0023] FIG. 5 is an exploded exploded view of a cutting unit according to an embodiment of the present invention.

[0024] FIG. 6 is a schematic diagram of the structure of the tool holder according to the embodiment of the present invention.

[0025] FIG. 7 is a schematic structural diagram of a static tool holder according to an embodiment of the present invention.

[0026] FIG. 8 is a schematic view of the structure of the movable tool holder according to an embodiment of the present invention.

[0027] FIG. 9 is a schematic structural diagram of a static knife according to an embodiment of the present invention. [0028] FIG. 10 is a schematic structural diagram of a static knife according to an embodiment of the present invention.

Invention embodiment

Embodiments of the invention

[0029] The following further describes the embodiments of the present invention with reference to the accompanying drawings:

[0030] As shown in FIG. 1, a hair cutting appliance includes a body 10, a connector 20, and a cutting unit 30, and the body 10 and the cutting unit 30 are connected through the connector 20.

[0031] As shown in FIGS. 2-3, the cutting unit 30 includes a knife holder 1, two symmetrically arranged mounting bosses 14 are provided on the upper side of the knife holder 1, and a hinged protruding shaft is provided outside the mounting boss 14 15.

[0032] The connector 20 includes a base 201, on the side of the base 201 is provided with two symmetrically arranged connecting bosses 20 2, and the inner side of the connecting boss 202 is provided with a hinge joint adapted to the hinge boss 15 Hole, the connector 20 is hingedly connected to the tool holder 1.

[0033] In order to facilitate the installation of the connector 20 on the tool holder 1, the end of the hinged convex shaft 15 forms an inclined surface structure, so that it has a certain installation guiding effect.

[0034] The tool holder 1 is also provided with two limiting bosses 16. After the connector 20 is installed on the tool holder 1, the connecting boss 202 is just clamped between the limit boss 16 and the mounting boss 14. , It can further prevent the connector 20 from falling off, improve the stability, and ensure a firm installation. At the same time, the limit boss 16 can improve the overall strength of the tool holder 1.

[0035] In addition, the other side of the base 201 is provided with two joining elements 203, and the connector 20 is detachably connected to the body through the joining elements 203.

[0036] As shown in FIGS. 3-10, a cutting unit includes a knife holder 1, a static knife holder 2, a static knife 3. a movable knife holder 4. a movable knife

6.

[0037] The static tool holder 2 is installed on the tool holder 1, and the static tool holder 2 is provided with a mounting through groove 21 that communicates up and down; the static knife 3 is installed below the static tool holder 2, left and right Both sides are evenly provided with hair-feeding slots 31; the movable blade holder 4 is movably arranged in the installation through groove 41 of the static blade holder 2, and the upper middle of the movable blade holder 4 is provided with a linkage element 43, the linkage element 43 can cooperate with the motor in the fuselage 10 to drive the movable tool holder 4 to slide back and forth along the installation through groove 21, the movable tool holder 4 is formed with two horizontally arranged sliding grooves 41; the static tool holder 2 Two locating pin shafts 5 are inserted into the side wall, and the two locating pin shafts 5 are respectively arranged through the sliding groove 41, and have an installation and positioning effect on the movable knife holder 4; the movable knife 6 is arranged on the movable knife Below the frame 4 and fits with the static knife 3, the left and right sides of the movable knife 6 are provided with movable blades 61 corresponding to the beard feeding slots 31. [0038] During the cutting operation, the motor in the machine body 10 is started. The motor drives the movable knife holder 4 to reciprocate in the installation slot 41 through the linkage element 43, and the movable knife holder 4 drives the movable knife 6 to reciprocate. The blade 61 cooperates with the hair entering slot 31 of the static knife 3 to cut the hair that enters through the hair entering slot 31.

[0039] When the above-mentioned cutting unit 30 is installed, the movable blade holder 4 is first inserted into the installation through groove 21 of the stationary blade holder 2 from top to bottom, and the positioning pin 5 is passed through the sliding groove 41 of the movable blade holder 4. Position the movable knife holder 4; then install the movable knife 6 and the static knife 3 under the movable knife holder 4 and the static knife holder 2 in sequence. Finally, the static knife holder 2, the static knife 3, the movable knife holder 4, The integral module formed by the knife 6 is mounted on the knife holder 1, and the installation is very convenient.

[0040] In the above-mentioned cutting unit 30, the sliding grooves 41 on the movable blade holder 4 are not limited to two, and only one or three or even more may be provided. When two sliding grooves are symmetrically provided, Not only the structure is simple, but also more balanced and stable.

[0041] The positioning pin shaft 5 is arranged corresponding to the sliding groove 41. When only one sliding groove 41 is provided, two positioning pin shafts 5 are also provided to ensure two-point support and ensure structural stability.

[0042] As shown in the figure, the bottom of the movable knife holder 4 is provided with two positioning posts 42, the movable knife 6 is formed with a positioning hole 63 adapted to the positioning posts 42, and the movable knife 6 passes through the positioning The hole 63 can float up and down along the positioning column 42, and between the movable knife 6 and the movable knife holder 4 is provided an elastic structure that drives the movable knife 6 downward to fit the static knife 3, and the elastic structure includes two elastic pieces 62. The elastic sheet 62 and the movable knife 6 have an integrated structure.

[0043] The movable knife 6 and the static knife 3 are elastically fit to ensure the hair cutting effect, and the integrally formed elastic sheet 62 is adopted, with fewer parts, lower cost, and more convenient installation.

[0044] Further, the upper end of the elastic sheet 62 is bent downward, and the elastic sheet 62 is in contact with the bottom of the movable blade holder 4 through its bending portion, and the bending portion is more smooth. When the elastic sheet 62 is deformed by force , Can avoid friction with the bottom of the movable knife holder 4, reduce wear and scratch, and improve the service life.

[0045] The positioning post 42 at the bottom of the movable knife holder 4 and the elastic sheet 62 on the movable knife 6 are not limited to only two, of course, only two are needed to achieve an effective positioning effect, so two positioning posts 42 are provided When the positioning hole 63 and the elastic sheet 62 are located, the structure is the simplest and most effective.

[0046] As shown in the figure, the inner side walls on the left and right sides of the installation through groove 21 are provided with at least two limiting ribs 22, and the two side walls of the movable tool holder 4 are in contact with the limiting ribs 22 In order to ensure effective cutting, the movable knife holder 4 can only drive the movable knife 6 to reciprocate back and forth, so as to avoid cheapness in the left and right directions. Therefore, the limiting rib 22 is used to limit the position in the left and right directions. When reciprocating, it only touches the limiting rib 22 This greatly reduces the contact area, reduces friction and wear, is more stable and reliable, and improves service life

[0047] As shown in the figure, the upper ends of the left and right sides of the static tool holder 2 are evenly provided with 4 clamping stations 23, and the tool holder 1 is correspondingly provided with 4 evenly arranged clamping slots 11. The static tool holder 2 is embedded in the tool holder 1 from bottom to top, and is clamped with the tool holder 1 through the clamping table 23 and the clamping groove 11, and has a simple structure and convenient installation.

[0048] In order to facilitate the installation of the static tool holder 2 on the tool holder 1, the clamping platform 23 on the static tool holder 2 forms an inclined surface structure, so that it has a certain installation guiding effect and is easier to assemble.

[0049] Further, the inner side walls of the front and rear sides of the knife holder 1 are provided with guide ribs 12, and the front and rear sides of the static tool holder 2 are provided with guide grooves 24 that are adapted to the guide ribs ₁₂ . To achieve further positioning and guidance.

[0050] As shown in the figure, a number of mounting bosses 25 are evenly provided on the left and right sides of the static knife holder 2, and the inner side walls of the left and right sides of the knife holder 1 are correspondingly provided with offset grooves 13; the static knife 3 includes Two mounting side plates 32, the mounting side plate 32 is provided with a mounting hole 33 that matches the mounting boss 25, the mounting side plate 32 is inserted between the static tool holder 2 and the tool holder 1, and is installed The hole 33 is installed on the mounting boss 25. The static knife 3 and the static knife holder 2 are also connected by a snap connection. The installation is simple. Installation When the static knife holder 2 is installed on the tool holder 1, the static knife 3 is installed The side plate 32 is sandwiched between the static tool holder 2 and the tool holder 1, to effectively prevent the static tool from being removed.

[0051] In order to further facilitate the installation of the static blade 3 on the static blade holder 2, the end of the mounting boss 25 also forms a slope structure

, So that it has a certain installation guiding effect, and it is easier to assemble.

[0052] In the description of the present invention, it should be noted that the terms "center", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right" "," "vertical", "horizontal", "top", "bottom", "inner", "outer" and other directions or positional relations are based on the directions or positional relations shown in the drawings, and are only for the convenience of description The invention and simplified description do not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it may be a fixed connection or It is a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood under specific circumstances. In addition, in this In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0054] Note to all technicians: Although the present invention has been described in accordance with the above specific embodiments, the inventive idea of the present invention is not limited to this invention. Any modification using the inventive idea will be included in the patent protection scope of this patent. Inside.

Claims

[Claim 1] A cutting unit, characterized in that: comprising

Tool holder (1);

The static tool holder (2) is installed on the tool holder (1), and the static tool holder (2) is provided with an installation through groove (21) that communicates up and down;

The static knife (3) is installed on the static knife holder (2), and the left and right sides of the static knife (3) are evenly provided with whisker inlet slots (31);

The movable tool holder (4) is movably arranged in the installation slot (41) of the static tool holder (2), and can slide back and forth along the installation slot (21);

The movable knife (6) is arranged under the movable knife holder (4) and is attached to the static knife (3). The left and right sides of the movable knife (6) are provided with corresponding to the whisker slot holes (31) Movable blade (61).

[Claim 2] The cutting unit according to claim 1, characterized in that: at least one horizontally arranged chute (41) is formed on the movable knife holder (4), and the static knife holder (2) At least one positioning pin shaft ( ₅ ) is provided on the side wall, and the positioning pin shaft (5) passes through the sliding groove (41) and is arranged

[Claim 3] The cutting unit according to claim 1, characterized in that: the bottom of the movable knife holder (4) is provided with at least two positioning posts (42), and the movable knife (6) is formed with Positioning post (42) matching positioning hole (63),

The movable knife (6) is installed on the positioning column (42) through the positioning hole (63), and between the movable knife (6) and the movable knife holder (4) is provided a driving knife (6) downward and Static knife (3) fits elastic structure.

[Claim 4] The cutting unit according to claim 3, characterized in that: the elastic structure is an elastic sheet (62), and the elastic sheet (62) and the movable knife (6) are in an integrated structure.

[Claim 5] The cutting unit according to claim 4, characterized in that: the upper end of the elastic sheet (62) is bent downward, and the elastic sheet (62) is connected to the movable blade holder (4) through its bending part. ) Bottom contact.

[Claim 6] The cutting unit according to claim 1, characterized in that: the inner side walls on the left and right sides of the installation through slot (21) are provided with at least two limiting ribs (22), and the movable Tool holder (4 The two side walls of) are in contact with the limiting ribs (22).

[Claim 7] The cutting unit according to claim 1, characterized in that: the upper ends of the left and right sides of the static knife holder (2) are evenly provided with a number of clamping stations (23), and the knife holder (1) corresponds to A number of clamping slots (11) are provided, and the static tool holder (2) is embedded in the tool holder (1) from bottom to top, and is clamped with the tool holder (1) through the clamping table (23) and the clamping slot (11).

[Claim 8] The cutting unit according to claim 7, characterized in that: the inner side walls of the front and rear sides of the knife holder (1) are provided with guiding ribs (12), and the static knife holder (2) There are guide grooves (24) matched with the guide ribs (12) on the front and rear sides of the device.

[Claim 9] The cutting unit according to claim 7, characterized in that: a plurality of mounting bosses (25) are evenly arranged on the left and right sides of the static knife holder (2), and the knife holder (1) has two left and right sides. The inner side wall of the side is provided with an offset groove (13) correspondingly; the static knife (3) includes two mounting side plates (32), and the mounting side plate (32) is provided with a mounting boss (25) A suitable mounting hole (33), the mounting side plate (32) is inserted between the static tool holder (2) and the tool holder (1), and is installed on the mounting boss (25) through the mounting hole (33).

[Claim 10] A hair cutting appliance, comprising a body (10), a connector (20) and the cutting unit (30) according to any one of claims 1-9, the connector (20)-end It is connected with the cutting unit (30), and the other end is detachably connected with the body (10).