Dual-purpose blade head structure and hair trimmer

Abstract

A dual-purpose blade head structure and a hair trimmer. The dual-purpose blade head structure comprises an oscillating frame (1) adapted to be connected to a motor shaft; a fixed blade frame (2) and a movable blade assembly are connected onto the oscillating frame; the oscillating frame is connected to the movable blade assembly and drives the movable blade assembly to reciprocate; a first trimming part and a second trimming part are formed between the movable blade assembly and the fixed blade frame; the first trimming part is used for shortening hair; the second trimming part is used for shaving hair close to the skin; the first trimming part comprises fixed blade teeth (21) provided on the fixed blade frame and movable blade teeth (31) provided on the movable blade assembly; the fixed blade teeth are matched with the movable blade teeth; the second trimming part comprises a fixed blade foil (22) provided on the fixed blade frame and a shaving blade strip (32) provided on the movable blade assembly. The hair trimmer can implement two functions of shortening hair and shaving hair close the skin, providing versatile functionality, easy operation, and high hair trimming efficiency; and the hair trimmer has a compact structure and a small overall size.

Description

A dual-purpose blade structure and hair trimmer Technical Field

[0001] This utility model relates to the field of hair trimmer technology, and more specifically, to a dual-purpose blade structure and hair trimmer. Background Technology

[0002] Reciprocating hair trimmers use a oscillating motor to drive the moving blades in a reciprocating motion. The moving blades work in conjunction with the fixed blade holder to trim hair. Some existing reciprocating hair trimmers only have one trimming section, meaning they only have the function of trimming hair. This function is relatively simple and not convenient for trimming the hair roots. Users need to use a separate trimmer to shave the hair roots, which is cumbersome and inefficient. In addition, some existing reciprocating hair trimmers have a relatively complex structure, resulting in a large blade head and an overall large size of the trimmer. This makes them less compact, flexible, and portable. Utility Model Content

[0003] To address at least one of the aforementioned problems, this utility model provides a dual-purpose blade head structure suitable for mounting on a hair trimmer. The hair trimmer includes a oscillating motor with a motor shaft. The dual-purpose blade head structure includes an oscillating frame adapted to connect to the motor shaft. A fixed blade holder and a moving blade assembly are connected to the oscillating frame. The oscillating frame is connected to the moving blade assembly and drives the moving blade assembly to reciprocate. A first trimming section and a second trimming section are formed between the moving blade assembly and the fixed blade holder. The first trimming section is used to shave short hair, and the second trimming section... The first trimming part includes fixed blades on the fixed blade holder and movable blades on the movable blade assembly, the fixed blades and the movable blades being adapted to each other; the second trimming part includes a fixed blade net on the fixed blade holder and a shaving strip on the movable blade assembly, the shaving strip and the fixed blade net being adapted to each other; this utility model is provided with a first trimming part and a second trimming part, which can realize two functions: shaving short hair and shaving the hair root, with multiple functions, simple operation, and high hair trimming efficiency; it has a compact structure and small size.

[0004] Optionally, the moving blade assembly is placed between the fixed blade holder and the swing frame. The moving blade assembly includes a first moving blade and a second moving blade. A limit mechanism is provided between the first moving blade and the second moving blade to make the first moving blade and the second moving blade swing synchronously. The moving blade teeth are disposed on the first moving blade, and the shaving blade strip is disposed on the second moving blade.

[0005] Optionally, the limiting mechanism includes a first limiting block disposed on the second moving tool and a first limiting groove disposed on the first moving tool, wherein the first limiting block is placed in the first limiting groove for limiting.

[0006] Optionally, the swing frame is provided with a swing part that is connected to the motor shaft and swings synchronously. The swing part is connected to the second moving tool and drives the second moving tool to swing synchronously.

[0007] Optionally, two first limiting blocks are symmetrically arranged, and a second limiting groove is formed between the two first limiting blocks. The swing part is provided with a connecting groove connected to the motor shaft and a second limiting block corresponding to the second limiting groove. The second limiting block is placed in the second limiting groove for limiting.

[0008] Optionally, two limiting protrusions are symmetrically arranged on the first moving blade, the first limiting groove is formed between the two limiting protrusions, the first limiting block abuts against the limiting protrusions for limiting, a protrusion is provided on one side of the second limiting block, and a spring sheet abuts between the protrusion and the first moving blade; a compression spring abuts between the swinging part and the second moving blade.

[0009] Optionally, the first moving blade is in the shape of a sheet, and the first moving blade is bent to form a receiving groove, and the second moving blade is placed in the receiving groove.

[0010] Optionally, the first moving blade is made of ceramic, and when the second trimming part trims the root of the hair, the fixed blade holder has a surface that is close to human skin, and the surface that is close to human skin is a plane or a curved surface.

[0011] Optionally, the fixed tool holder is hinged to the swing frame, and two fixed tool teeth are provided, which are symmetrically distributed on the edge positions on both sides of the fixed tool holder, and the fixed tool net is located between the two fixed tool teeth.

[0012] Compared to existing technologies, the dual-purpose blade structure of this utility model is equipped with a first trimming section and a second trimming section, enabling it to perform two functions: shaving short hair and trimming the hair roots. It is versatile, easy to operate, and highly efficient in hair trimming. Its structure is compact and small in size. The first and second moving blades are limited by their own structures, eliminating the need for additional parts to limit their movement, resulting in a simple structure and low production cost. Since the first and second moving blades are limited and swing synchronously, simply connecting the swinging section to the first moving blade is sufficient to simultaneously drive both blades to swing back and forth, resulting in a simple and reasonable structure. The first limiting block abuts against the limiting protrusion for effective limiting, preventing relative displacement between the first and second moving blades during swinging and ensuring more stable hair trimming. The first moving blade is made of ceramic, which does not easily overheat during prolonged use, reducing lubrication requirements and minimizing the frequency of adding coolant due to excessive heat.

[0013] In addition, this utility model also provides a hair trimmer, including the above-mentioned dual-purpose blade head structure. This hair trimmer also has the same beneficial effects as the above-mentioned dual-purpose blade head structure, which will not be described in detail here. Attached Figure Description

[0014] Figure 1 is a perspective view of Embodiment 1 of this utility model;

[0015] Figure 2 is an enlarged view of part A in Figure 1;

[0016] Figure 3 is an exploded view of Embodiment 1 of this utility model;

[0017] Figure 4 is an enlarged view of part B in Figure 3;

[0018] Figure 5 is an exploded view of Embodiment 1 of this utility model;

[0019] Figure 6 is a schematic diagram of the structure of the near surface in Embodiment 1 of this utility model;

[0020] Figure 7 is a perspective view of Embodiment 2 of this utility model;

[0021] Figure 8 is a schematic diagram of the structure of the close-fitting surface in Embodiment 2 of this utility model.

[0022] The component names corresponding to the various reference numerals in the figure are as follows: 1 is the swing frame, 101 is the swing part, 1011 is the connecting groove, 1012 is the second limiting block, 2 is the fixed blade holder, 20 is the positioning pin, 201 is the first fixed blade holder, 202 is the second fixed blade holder, 21 is the fixed blade tooth, 22 is the fixed blade net, 23 is the contact surface, 31 is the moving blade tooth, 32 is the shaving blade strip, 4 is the first moving blade, 41 is the first limiting groove, 42 is the receiving groove, 43 is the limiting protrusion, 5 is the second moving blade, 51 is the first limiting block, 511 is the second limiting groove, 512 is the protrusion, 513 is the spring piece, 514 is the guide slope, 6 is the compression spring, and 7 is the hinge shaft. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Example 1

[0026] Referring to Figures 1-6, Embodiment 1 of this utility model provides a dual-purpose blade head structure suitable for mounting on a hair trimmer. The hair trimmer includes a oscillating motor with a motor shaft. The dual-purpose blade head structure includes an oscillating frame 1 suitable for connection to the motor shaft. A fixed blade holder 2 and a moving blade assembly are connected to the oscillating frame 1. The oscillating frame 1 is connected to the moving blade assembly and drives the moving blade assembly to reciprocate. A first trimming section and a second trimming section are formed between the moving blade assembly and the fixed blade holder 2. The first trimming section is used to shave short hair, and the second trimming section is used to shave the roots of the hair. The first trimming section includes a fixed blade tooth 21 mounted on the fixed blade holder 2 and a moving blade tooth 31 mounted on the moving blade assembly. The fixed blade tooth 21 and the moving blade tooth 31 are adapted to each other. The moving blade tooth 31 is driven relative to the fixed blade tooth 21 by the motor shaft. The reciprocating motion achieves the function of shaving short hair; the second trimming part includes a fixed blade net 22 set on the fixed blade holder 2 and a shaving blade 32 set on the moving blade assembly. The shaving blade 32 is adapted to the fixed blade net 22. The motor shaft drives the shaving blade 32 to reciprocate relative to the fixed blade net 22 to achieve the function of shaving the hair root; this utility model is provided with a first trimming part and a second trimming part, which can realize the two functions of shaving short hair and shaving the hair root. It has multiple functions, simple operation, and high hair trimming efficiency; it has a compact structure and small size; it should be noted that because the thickness of the fixed blade net is small, the root of human hair such as beard can be shaving by the mesh of the fixed blade net 22 and the shaving blade 32; preferably, the thickness of the fixed blade net 22 is less than 0.1mm.

[0027] Referring to Figures 1, 3, and 5, the moving blade assembly is positioned between the fixed blade holder 2 and the swinging frame 1. The moving blade assembly includes a first moving blade 4 and a second moving blade 5, which together achieve the functions of shaving short hair and shaving the hair roots. A limit mechanism is provided between the first moving blade 4 and the second moving blade 5 to allow the first moving blade 4 and the second moving blade 5 to swing synchronously. Moving blade teeth 31 are provided on the first moving blade 4, and shaving blades 32 are provided on the second moving blade 5. Multiple shaving blades 32 are spaced apart along the reciprocating swing direction of the second moving blade 5 to improve the shaving effect.

[0028] Referring to Figures 1-4, the limiting mechanism includes a first limiting block 51 disposed on the second moving tool 5 and a first limiting groove 41 disposed on the first moving tool 4. The first limiting block 51 is placed in the first limiting groove 41 for limiting. The limiting is achieved by the structure of the first moving tool 4 and the second moving tool 5 themselves, without the need for additional parts to limit the first moving tool 4 and the second moving tool, resulting in a simple structure and low production cost. The swing frame 1 is provided with a swing part 101 that is connected to the motor shaft and swings synchronously. The swing part 101 is connected to the second moving tool 5 and drives the second moving tool 5 to swing synchronously. Since the first moving tool 4 and the second moving tool 5 are limited and swing synchronously, it is only necessary to connect the swing part 101 to the first moving tool 4 to simultaneously drive the first moving tool 4 and the second moving tool 5 to swing back and forth, resulting in a simple structure and reasonable design. The first limiting block 51 is provided with a guide slope 514 to facilitate the first limiting block 51 being guided into the first limiting groove 41, reducing assembly difficulty.

[0029] Referring to Figures 2-5, two first limiting blocks 51 are symmetrically arranged, and a second limiting groove 511 is formed between the two first limiting blocks 51. The swing part 101 is provided with a connecting groove 1011 connected to the motor shaft and a second limiting block 1012 corresponding to the second limiting groove 511. The second limiting block 1012 is placed in the second limiting groove 511 for limiting. Two limiting protrusions 43 are symmetrically arranged on the first moving blade 4. The first limiting groove 41 is formed between the two limiting protrusions 43. The first limiting block 51 abuts against the limiting protrusion 43 for limiting. The limiting effect is good, so that the first moving blade 4 and the second moving blade 5 are not prone to relative displacement during swinging, thus trimming the hair. The hair is more stable; a protrusion 512 is provided on one side of the second limiting block 1012. In this embodiment, there are two protrusions 512, which are symmetrically distributed on both sides of the second limiting block 1012; a spring piece 513 abuts between the protrusion 512 and the first moving blade 4. The elastic force of the spring piece 513 presses the first moving blade 4 against the fixed blade holder. After being pressed, the first moving blade 4 swings relative to the fixed blade holder to achieve the function of cutting short hair; a compression spring 6 abuts between the swinging part 101 and the second moving blade 5. The elastic force of the compression spring 6 presses the second moving blade 5 against the fixed blade holder. After being pressed, the second moving blade 5 swings relative to the fixed blade holder to achieve the function of shaving the hair roots.

[0030] Referring to Figures 1, 3, 5, and 6, the first moving blade 4 is plate-shaped, occupying little space after installation, resulting in a compact overall blade head structure. The first moving blade 4 is bent to form a receiving groove 42, within which the second moving blade 5 is placed, resulting in a compact and small structure. The first moving blade 4 is made of ceramic, which does not easily overheat during prolonged use, requiring less lubrication and reducing the frequency of adding coolant due to excessive heat. When the second trimming part trims the hair roots, the fixed blade holder 2 has a contact surface 23 close to human skin, which is flat, facilitating the trimming of hair roots in relatively flat areas of the body. The fixed blade holder 2 and the swing frame 1 are hinged via a hinge shaft 7. The connection allows the fixed blade holder 2 to rotate at a certain angle relative to the swing frame 1 during use, enabling the fixed blade holder 2 to rotate adaptively when shaving the hair roots, thus better conforming to the skin and improving the trimming effect. There are two fixed blade teeth 21, which are symmetrically distributed on the edges of both sides of the fixed blade holder 2, and the fixed blade mesh 22 is located between the two fixed blade teeth 21. The fixed blade holder 2 includes a first fixed blade holder 201 and a second fixed blade holder 202, which are fixed together by a positioning pin 20. The fixed blade teeth 21 are set on the first fixed blade holder 201, and the fixed blade mesh 22 is set on the second fixed blade holder 202. Example 2

[0031] Referring to Figures 7 and 8, the difference between this second embodiment and the first embodiment is that the close-fitting surface 23 is an arc surface, which better fits the arc-shaped and especially concave parts of the human face and head, thus improving the trimming effect.

[0032] The dual-purpose blade head structure of this utility model is provided with a first trimming part and a second trimming part, which can realize two functions: shaving short hair and shaving the hair root. It has multiple functions, simple operation, and high hair trimming efficiency. It has a compact structure and small size. The first and second moving blades are limited by their own structure, without the need for additional parts to limit the first and second moving blades. The structure is simple and the production cost is low. Since the first and second moving blades are limited and swing synchronously, it is only necessary to connect the swinging part to the first moving blade to drive the first and second moving blades to swing back and forth at the same time. The structure is simple and the design is reasonable. The first limiting block abuts against the limiting protrusion for limiting. The limiting effect is good, so that the first and second moving blades are not prone to relative displacement during swinging, and the hair trimming is more stable. The first moving blade is made of ceramic material, which does not easily heat up during long-term use, has low lubrication requirements, and can reduce the frequency of adding coolant due to excessive heat.

[0033] In addition, this utility model also provides a hair trimmer, including the above-mentioned dual-purpose blade head structure. This hair trimmer also has the same beneficial effects as the above-mentioned dual-purpose blade head structure, which will not be described in detail here.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A dual-purpose blade structure, suitable for mounting on a hair trimmer, the hair trimmer including a oscillating motor, the oscillating motor being provided with a motor shaft, characterized in that, The dual-purpose blade head structure includes a swing frame (1) adapted to be connected to the motor shaft. A fixed blade holder (2) and a moving blade assembly are connected to the swing frame (1). The swing frame (1) is connected to the moving blade assembly and drives the moving blade assembly to reciprocate. A first trimming section and a second trimming section are formed between the moving blade assembly and the fixed blade holder (2). The first trimming section is used to shave short hair, and the second trimming section is used to shave the root of the hair. The first trimming section includes a fixed blade tooth (21) disposed on the fixed blade holder (2) and a moving blade tooth (31) disposed on the moving blade assembly. The fixed blade tooth (21) and the moving blade tooth (31) are adapted to each other. The second trimming section includes a fixed blade net (22) disposed on the fixed blade holder (2) and a shaving blade strip (32) disposed on the moving blade assembly. The shaving blade strip (32) and the fixed blade net (22) are adapted to each other.

2. The dual-purpose cutting head structure according to claim 1, characterized in that, The moving blade assembly is placed between the fixed blade holder (2) and the swing frame (1). The moving blade assembly includes a first moving blade (4) and a second moving blade (5). A limit mechanism is provided between the first moving blade (4) and the second moving blade (5) to make the first moving blade (4) and the second moving blade (5) swing synchronously. The moving blade tooth (31) is provided on the first moving blade (4), and the shaving blade (32) is provided on the second moving blade (5).

3. The dual-purpose cutting head structure according to claim 2, characterized in that, The limiting mechanism includes a first limiting block (51) disposed on the second moving blade (5) and a first limiting groove (41) disposed on the first moving blade (4). The first limiting block (51) is placed in the first limiting groove (41) for limiting.

4. The dual-purpose cutting head structure according to claim 3, characterized in that, The swing frame (1) is provided with a swing part (101) that is connected to the motor shaft and swings synchronously. The swing part (101) is connected to the second moving blade (5) and drives the second moving blade (5) to swing synchronously.

5. The dual-purpose cutting head structure according to claim 4, characterized in that, Two first limiting blocks (51) are symmetrically arranged, and a second limiting groove (511) is formed between the two first limiting blocks (51). The swing part (101) is provided with a connecting groove (1011) connected to the motor shaft and a second limiting block (1012) corresponding to the second limiting groove (511). The second limiting block (1012) is placed in the second limiting groove (511) for limiting.

6. The dual-purpose cutting head structure according to claim 5, characterized in that, Two limiting protrusions (43) are symmetrically arranged on the first moving blade (4). The first limiting groove (41) is formed between the two limiting protrusions (43). The first limiting block (51) abuts against the limiting protrusion (43) for limiting. A protrusion (512) is provided on one side of the second limiting block (1012). A spring piece (513) abuts between the protrusion (512) and the first moving blade (4). A compression spring (6) abuts between the swing part (101) and the second moving blade (5).

7. The dual-purpose cutting head structure according to claim 2, characterized in that, The first moving blade (4) is in the shape of a sheet, and the first moving blade (4) is bent to form a receiving groove (42), and the second moving blade (5) is placed in the receiving groove (42).

8. The dual-purpose cutting head structure according to claim 2, characterized in that, The first moving blade (4) is made of ceramic. When the second trimming part trims the root of the hair, the fixed blade holder (2) has a close-fitting surface (23) that is close to human skin. The close-fitting surface (23) is a flat surface or a curved surface.

9. The dual-purpose cutting head structure according to any one of claims 1-8, characterized in that, The fixed blade holder (2) is hinged to the swing frame (1). There are two fixed blade teeth (21). The two fixed blade teeth (21) are symmetrically distributed on the edge positions on both sides of the fixed blade holder (2). The fixed blade net (22) is located between the two fixed blade teeth (21).

10. A hair trimmer, characterized in that, Includes the dual-purpose cutter head structure as described in any one of claims 1-9.

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