Dual-purpose cutter head structure and hair trimmer

Abstract

This invention provides a dual-purpose cutter head structure and hair trimmer that is feature-rich, easy to operate, highly efficient for hair trimming, and has a compact and small design. [Solution] The dual-purpose cutter head structure includes a oscillating frame 1 connectable to a motor shaft, to which a fixed blade stand 2 and a movable blade assembly are connected. The oscillating frame is connected to the movable blade assembly and causes it to reciprocate. Between the movable blade assembly and the fixed blade stand, a first trimming section and a second trimming section are formed. The first trimming section is used to shave hair short, and the second trimming section is used to shave the roots of the hair. The first trimming section includes fixed blade teeth 21 provided on the fixed blade stand and movable blade teeth 31 provided on the movable blade assembly, with the fixed blade teeth and movable blade teeth fitting together. The second trimming section includes a fixed blade mesh provided on the fixed blade stand and a shaving cutter bar provided on the movable blade assembly. This invention, equipped with a first trimming section and a second trimming section, can achieve both the function of shaving hair short and the function of shaving the roots of the hair.

Description

Technical Field

[0004]

[0001] The present invention relates to the technical field of hair trimmers, and specifically, to a dual-purpose cutter head structure and a hair trimmer.

Background Art

[0002] A reciprocating hair trimmer reciprocates a movable blade by a swing motor, and the movable blade interlocks with a fixed blade stand to trim hair. However, some existing reciprocating hair trimmers have only one trimming part for shortening hair, that is, they only have the function of shortening hair. Therefore, the function is single, which is inconvenient for trimming the roots of hair. When trimming the roots of hair, a dedicated hair root trimmer must be used separately, the operation is complicated, and the trimming efficiency is low. Furthermore, some existing reciprocating hair trimmers have a complicated structure, so the volume of the cutter head becomes large. As a result, the size of the entire trimmer product also becomes large, lacking compactness and flexibility during use, and being inconvenient to carry.

Summary of the Invention

Problems to be Solved by the Invention

[0003] To solve at least one aspect of the above problems, the present invention provides a dual-purpose cutter head structure that can solve the above problems and can be installed on a hair trimmer.

Means for Solving the Problems

[0004] The hair trimmer is equipped with an oscillating motor, and the oscillating motor is provided with a motor shaft. The dual-purpose cutter head structure is equipped with an oscillating frame connectable to the motor shaft, to which a fixed blade stand and a movable blade assembly are connected, the oscillating frame is connected to the movable blade assembly and causes the movable blade assembly to reciprocate, and a first trimming section and a second trimming section are formed between the movable blade assembly and the fixed blade stand, the first trimming section is used for shaving hair short, and the second trimming section is used for shaving the roots of hair, the first trimming section includes fixed blade teeth provided on the fixed blade stand and movable blade teeth provided on the movable blade assembly, the fixed blade teeth are compatible with the movable blade teeth, and the second trimming section includes a fixed blade mesh provided on the fixed blade stand and a shaving cutter bar provided on the movable blade assembly, the shaving cutter bar is compatible with the fixed blade mesh. This invention features a first trimming section and a second trimming section, enabling both the function of shortening hair and the function of shaving the hair roots. It is feature-rich, easy to operate, highly efficient at trimming hair, and has a compact and small structure. Selectively, the movable blade assembly is positioned between the fixed blade stand and the oscillating frame, and the movable blade assembly includes a first movable blade component and a second movable blade component, between which a position limiting mechanism is provided so that the first movable blade component and the second movable blade component oscillate in sync, the movable blade teeth are provided on the first movable blade component, and the shaving cutter bar is provided on the second movable blade component.

[0005] Selectively, the position limiting mechanism comprises a first limiting block provided on the second movable blade component and a first limiting groove provided on the first movable blade component, wherein the first limiting block is housed in the first limiting groove to limit its position.

[0006] Selectively, the oscillating frame is provided with an oscillating part that is connected to the motor shaft and oscillates in sync with it, and the oscillating part is connected to the second movable blade component and causes the second movable blade component to oscillate in sync with it.

[0007] Selectively, two of the first limiting blocks are provided symmetrically, a second limiting groove is formed between the two first limiting blocks, and the oscillating portion 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 housed in the second limiting groove and its position is restricted.

[0008] Selectively, the first movable blade component is provided with two symmetrically positioned limiting protrusions, the first limiting groove is formed between the two limiting protrusions, the first limiting block abuts against the limiting protrusions to limit its position, the second limiting block has a protrusion on one side, a leaf spring abuts between the protrusion and the first movable blade component, and a compression spring abuts between the oscillating portion and the second movable blade component.

[0009] Selectively, the first movable blade component is plate-shaped, curved to form a receiving recess, and the second movable blade component is positioned within the receiving recess.

[0010] Selectively, the first movable blade component is made of ceramic material, and the fixed blade stand is provided with a contact surface that comes into close contact with the skin of the human body when the second trimming section trims the roots of the hair, and the contact surface is flat or curved.

[0011] Selectively, the fixed blade stand is hinged to the oscillating frame, the fixed blade teeth are provided, the two fixed blade teeth are symmetrically arranged on the edges on both sides of the fixed blade stand, and the fixed blade mesh is located between the two fixed blade teeth. [Effects of the Invention]

[0012] Compared to conventional technology, the dual-purpose cutter head structure of this invention is equipped with a first trimming section and a second trimming section, enabling both the function of shortening hair and the function of shaving the hair roots. It is feature-rich, easy to operate, and has high hair trimming efficiency, as well as a compact and small structure. Since the positional constraint is provided by the structure of the first and second movable blade components themselves, there is no need to use additional parts to restrict the position of the first and second movable blade components, resulting in a simple structure and low manufacturing cost. Since the first and second movable blade components oscillate simultaneously while their position is restricted, the first and second movable blade components can be simultaneously reciprocated by simply connecting the oscillating part to the first movable blade component. The structure is simple and the design is rational. The first restriction block abuts against the restriction projection to restrict its position, and the positional constraint effect is good. As a result, relative displacement is less likely when the first and second movable blade components oscillate, and hair trimming becomes more stable. The first movable blade component is made of ceramic material, which does not generate much heat even after prolonged use and has low lubrication requirements, thus reducing the frequency of adding cooling lubricant due to excessive heat generation.

[0013] Furthermore, this invention provides a hair trimmer equipped with the aforementioned dual-purpose cutter head structure. This hair trimmer also has beneficial effects due to the dual-purpose cutter head structure, which will not be described repeatedly here. [Brief explanation of the drawing]

[0014] [Figure 1] This is a three-dimensional view of Embodiment 1 of the present invention. [Figure 2] This is an enlarged view of section A in Figure 1. [Figure 3] This is an exploded view 1 of Embodiment 1 of the present invention. [Figure 4] This is an enlarged view of section B in Figure 3. [Figure 5] This is an exploded view 2 of Embodiment 1 of the present invention. [Figure 6] This is a schematic diagram of the structure of the contact surface in Embodiment 1 of the present invention. [Figure 7] This is a three-dimensional view of Embodiment 2 of the present invention. [Figure 8] This is a schematic diagram of the structure of the contact surface in Embodiment 2 of the present invention. [Modes for carrying out the invention]

[0015] In order to make the above-mentioned objectives, features, and advantages of this invention clearer and easier to understand, specific embodiments of this invention will be described in detail below with reference to the drawings.

[0016] In the description of this invention, it is important to understand that the directions or positional relationships indicated by terms such as "up" and "down" are based on the directions or positional relationships in which the product is normally used.

[0017] The terms "first" and "second" are intended to describe the purpose and are not intended to indicate or imply relative importance or implicitly suggest the number of designated technical features. Therefore, features designated as "first" or "second" are considered to include, explicitly or implicitly, at least one such feature.

[0018] Example 1: Referring to FIGS. 1 to 6, Embodiment 1 of the present invention provides a dual-purpose cutter head structure that can be installed on a hair trimmer. The hair trimmer includes a swing motor, and a motor shaft is provided on this swing motor. The dual-purpose cutter head structure has a swing frame 1 that can be connected to the motor shaft, and a fixed blade stand 2 and a movable blade assembly are connected to the swing frame 1. The swing frame 1 is connected to the movable blade assembly to reciprocate the movable blade assembly, and a first trimming portion and a second trimming portion are formed between the movable blade assembly and the fixed blade stand 2. The first trimming portion is used to trim hair short, and the second trimming portion is used to shave the roots of the hair. The first trimming portion includes a fixed blade tooth 21 provided on the fixed blade stand 2 and a movable blade tooth 31 provided on the movable blade assembly. The fixed blade tooth 21 and the movable blade tooth 31 are adapted to each other, and the motor shaft drives the movable blade tooth 31 to reciprocate with respect to the fixed blade tooth 21, thereby realizing the function of trimming hair short. The second trimming portion includes a fixed blade net 22 provided on the fixed blade stand 2 and a shaving cutter bar 32 provided on the movable blade assembly. The shaving cutter bar 32 is adapted to the fixed blade net 22, and the motor shaft drives the shaving cutter bar 32 to reciprocate with respect to the fixed blade net 22, thereby realizing the function of shaving the roots of the hair. The present invention includes a first trimming portion and a second trimming portion, and can realize both the function of trimming hair short and the function of shaving the roots of the hair. It has rich functions, simple operation, high hair trimming efficiency, and a compact and small structure. In addition, since the thickness of the fixed blade net is small, the roots of hair such as human beard can also be shaved by the cooperation of the mesh holes of the fixed blade net 22 and the shaving cutter bar 32. Preferably, the fixed blade net 22 is set to a thickness of less than 0.1 mm.

[0019] Referring to Figures 1, 3, and 5, the movable blade component is positioned between the fixed blade stand 2 and the oscillating frame 1, and consists of a first movable blade component 4 and a second movable blade component 5. These two movable blade components enable both the function of shaving hair short and the function of shaving the hair roots. A position limiting mechanism is provided between the first movable blade component 4 and the second movable blade component 5, enabling synchronized oscillation of both. The first movable blade component 4 is provided with movable blade teeth 31, and the second movable blade component 5 is provided with shaving cutter bars 32. Multiple shaving cutter bars 32 are provided at intervals in the reciprocating oscillation direction of the second movable blade component 5, thereby improving the shaving effect.

[0020] Referring to Figures 1 to 4, the position limiting mechanism comprises a first limiting block 51 provided on the second movable blade component 5 and a first limiting groove 41 provided on the first movable blade component 4, with the first limiting block 51 housed in the first limiting groove 41. Since position limiting is performed by the structure of the first movable blade component 4 and the second movable blade component 5 themselves, there is no need to use additional parts to limit the position of the first movable blade component 4 and the second movable blade component 5, resulting in a simple structure and low manufacturing costs. The oscillating frame 1 is provided with an oscillating part 101 that is connected to the motor shaft and oscillates synchronously. The oscillating part 101 is connected to the second movable blade component 5, causing the second movable blade component 5 to oscillate synchronously. Since the first movable blade component 4 and the second movable blade component 5 are position-limited and oscillate synchronously, the reciprocating oscillation of the first movable blade component 4 and the second movable blade component 5 can be driven simultaneously simply by connecting the oscillating part 101 to the first movable blade component 4. The structure is simple and the design is rational. The first restriction block 51 is provided with a guide slope 514 that allows the first restriction block 51 to be easily inserted into the first restriction groove 41, thereby reducing the difficulty of assembly.

[0021] Referring to FIGS. 2 to 5, two first limiting blocks 51 are provided symmetrically, and a second limiting groove 511 is formed between these two first limiting blocks 51. The swinging part 101 is provided with a connection 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 accommodated in the second limiting groove 511 to limit the position. Two limiting protrusions 43 are provided symmetrically on the first movable blade part 4, and the first limiting groove 41 is formed between these two limiting protrusions 43. The first limiting block 51 abuts against the limiting protrusion 43 to limit the position, and the position limiting effect is good. Thereby, when the first movable blade part and the second movable blade part swing, it is difficult to have relative displacement, and the trimming of hair is more stable. On one side of the second limiting block 1012, two protrusions 512 provided in this embodiment are arranged, and these two protrusions 512 are symmetrically arranged on both sides of the second limiting block 1012. A leaf spring 513 is abutted between the protrusion 512 and the first movable blade part 4, and the first movable blade part 4 is pressed against the fixed blade stand by the elastic force of the leaf spring 513. After being pressed, the first movable blade part 4 swings relative to the fixed blade stand to realize the function of shaving hair short. Also, a compression spring 6 is abutted between the swinging part 101 and the second movable blade part 5, and the second movable blade part 5 is pressed against the fixed blade stand by the elastic force of the compression spring 6. After being pressed, the second movable blade part 5 swings relative to the fixed blade stand to realize the function of shaving the root of the hair.

[0022] Referring to Figures 1, 3, 5, and 6, the first movable blade component 4 is plate-shaped, occupying a small space after installation, making the overall cutter head structure compact. The first movable blade component 4 is curved to form a housing recess 42, and the second movable blade component 5 is housed in this housing recess 42, resulting in a compact and small structure. The first movable blade component 4 is made of ceramic material, which does not generate much heat even after prolonged use, and the requirements for lubrication are low, thus reducing the frequency of adding cooling lubricant due to overheating. The fixed blade stand (2) is provided with a contact surface 23 that comes into close contact with the skin of the human body when the second trimming section trims the roots of hair. Since this contact surface 23 is flat, it is easy to trim the roots of hair on relatively flat areas of the human body. The fixed blade stand 2 is connected to the oscillating frame 1 by a hinge shaft 7, allowing the fixed blade stand 2 to rotate at a constant angle relative to the oscillating frame 1 during use. This allows the fixed blade stand 2 to rotate adaptively when shaving the roots of the hair, making it closer to the skin and enhancing the trimming effect. Two fixed blade teeth 21 are provided, and the two fixed blade teeth 21 are symmetrically positioned on both edges of the fixed blade stand 2. The fixed blade mesh 22 is provided between these two fixed blade teeth 21. The fixed blade stand 2 includes a first fixed blade stand 201 and a second fixed blade stand 202, both of which are fixed by positioning pins 20. The fixed blade teeth 21 are provided on the first fixed blade stand 201, and the fixed blade mesh 22 is provided on the second fixed blade stand 202.

[0023] Example 2: Referring to Figures 7 and 8, this embodiment 2 differs from embodiment 1 in that the contact surface 23 is curved. This allows for better contact with the curved central portion of the human face and head, especially the inwardly recessed portion, improving the trimming effect.

[0024] The dual-purpose cutter head structure of this invention is equipped with a first trimming section and a second trimming section, enabling both the function of shortening hair and the function of shaving the hair roots. It is feature-rich and easy to operate, resulting in high hair trimming efficiency, and is also compact and small in size. Since the positional constraint is provided by the structure of the first and second movable blade components themselves, there is no need to use additional parts to restrict the position of the first and second movable blade components, resulting in a simple structure and low manufacturing cost. Since the first and second movable blade components oscillate synchronously while their position is restricted, both can be made to oscillate simultaneously by simply connecting the oscillating part to the first movable blade component. The structure is simple and the design is rational. The first restriction block abuts against the restriction projection to restrict its position, and since the positional constraint effect is good, the first and second movable blade components are less likely to move relative to each other when they oscillate, resulting in more stable hair trimming. The first movable blade component is made of ceramic material, which does not generate much heat even after prolonged use and has low lubrication requirements, thus reducing the frequency of adding cooling lubricant due to excessive heat generation.

[0025] Furthermore, this invention provides a hair trimmer equipped with the aforementioned dual-purpose cutter head structure. This hair trimmer also has beneficial effects due to the dual-purpose cutter head structure, which will not be explained again here.

[0026] The above description is merely a preferred embodiment of the present invention. Those skilled in the art can make several improvements and enhancements without departing from the technical principles of the present invention. These improvements and enhancements should also be considered to fall within the scope of protection of the present invention. The names of the parts corresponding to each symbol in the diagram are as follows:

[0027] 1. Oscillating frame, 101 Swivel part, 1011 connecting groove, 1012 Second Restriction Block, 2 fixed blade stands, 20 positioning pins, 201 First fixed blade stand, 202 Second fixed blade stand, 21 fixed blade teeth, 22 Fixed blade net, 23 Contact surface, 31 Movable blade teeth, 32 Shaving cutter bar, 4 1st movable blade part, 41 First limiting groove, 42 Receiving recess, 43 Restrictive projections, 5 second movable blade part, 51. First restricted block, 511 Second limiting groove, 512 protrusion, 513 Leaf spring, 514 Guide slope, 6. Compression spring, 7. Hinge axis.

Claims

1. A dual-purpose cutter head structure that can be attached to a hair trimmer, The hair trimmer is equipped with an oscillating motor, and the oscillating motor is provided with a motor shaft. The dual-purpose cutter head structure includes a oscillating frame (1) connectable to the motor shaft, to which a fixed blade stand (2) and a movable blade assembly are connected, the oscillating frame (1) is connected to the movable blade assembly and causes the movable blade assembly to reciprocate, and a first trimming section and a second trimming section are formed between the movable blade assembly and the fixed blade stand (2), the first trimming section is used for shaving hair short, and the second trimming section is used for shaving the roots of hair. Furthermore, the dual-purpose cutter head structure is characterized in that the first trimming section includes a fixed blade tooth (21) provided on the fixed blade stand (2) and a movable blade tooth (31) provided on the movable blade assembly, wherein the fixed blade tooth (21) is compatible with the movable blade tooth (31), and the second trimming section includes a fixed blade mesh (22) provided on the fixed blade stand (2) and a shaving cutter bar (32) provided on the movable blade assembly, wherein the shaving cutter bar (32) is compatible with the fixed blade mesh (22).

2. The dual-purpose cutter head structure according to claim 1, characterized in that the movable blade assembly is positioned between the fixed blade stand (2) and the oscillating frame (1), the movable blade assembly includes a first movable blade component (4) and a second movable blade component (5), a position limiting mechanism is provided between the first movable blade component (4) and the second movable blade component (5) so that the first movable blade component (4) and the second movable blade component (5) oscillate in sync, the movable blade teeth (31) are provided on the first movable blade component (4), and the shaving cutter bar (32) is provided on the second movable blade component (5).

3. The dual-purpose cutter head structure according to claim 2, characterized in that the position limiting mechanism comprises a first limiting block (51) provided on the second movable blade component (5) and a first limiting groove (41) provided on the first movable blade component (4), wherein the first limiting block (51) is housed in the first limiting groove (41) to limit its position.

4. The dual-purpose cutter head structure according to claim 3, characterized in that the oscillating frame (1) is provided with an oscillating part (101) connected to the motor shaft and oscillating in sync, the oscillating part (101) is connected to the second movable blade component (5) and causes the second movable blade component (5) to oscillate in sync.

5. The dual-purpose cutter head structure according to claim 4, characterized in that two first limiting blocks (51) are provided symmetrically, a second limiting groove (511) is formed between the two first limiting blocks (51), the oscillating 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 housed in the second limiting groove (511) to limit its position.

6. The dual-purpose cutter head structure according to claim 5, characterized in that the first movable blade component (4) is provided with two symmetrically arranged limiting protrusions (43), the first limiting groove (41) is formed between the two limiting protrusions (43), the first limiting block (51) abuts against the limiting protrusions (43) to limit its position, the second limiting block (1012) is provided with a protrusion (512) on one side, a leaf spring (513) abuts between the protrusion (512) and the first movable blade component (4), and a compression spring (6) abuts between the oscillating portion (101) and the second movable blade component (5).

7. The dual-purpose cutter head structure according to claim 2, characterized in that the first movable blade component (4) is plate-shaped, the first movable blade component (4) is curved to form a housing recess (42), and the second movable blade component (5) is disposed within the housing recess (42).

8. The dual-purpose cutter head structure according to claim 2, characterized in that the first movable blade component (4) is made of ceramic material, the fixed blade stand (2) is provided with a contact surface (23) that comes into close contact with the skin of the human body when the second trimming section trims the roots of hair, and the contact surface (23) is a flat or curved surface.

9. The dual-purpose cutter head structure according to any one of claims 1 to 8, characterized in that the fixed blade stand (2) is hinged to the oscillating frame (1), two fixed blade teeth (21) are provided, the two fixed blade teeth (21) are symmetrically arranged on the edges on both sides of the fixed blade stand (2), and the fixed blade mesh (22) is located between the two fixed blade teeth (21).

10. A hair trimmer characterized by comprising a dual-purpose cutter head structure as described in any one of claims 1 to 8.

11. A hair trimmer characterized by comprising the dual-purpose cutter head structure described in claim 9.

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