Nose hair trimmer blade and nose hair trimmer using blade

Abstract

A nose hair trimmer blade and a nose hair trimmer using the blade, belonging to the technical field of nose hair trimmers. The nose hair trimmer blade comprises an inner blade base and an outer blade base that are sleeved one inside the other. The upper end of the inner blade base is circumferentially provided with several evenly spaced inner blade heads, and the upper end of the outer blade base is circumferentially provided with several evenly spaced outer blade heads cooperating with the inner blade heads. The inner side surface of a free end of each outer blade head is a first guiding bevel. The nose hair trimmer of the present application enables effective cutting of nose hairs that grow close to or against the inner wall of the nasal cavity.

Description

Nose hair trimmer blade and nose hair trimmer using the blade Technical Field

[0001] This invention relates to a blade head, and more specifically, to a nose hair trimmer blade head. The invention also relates to a nose hair trimmer employing this blade head. Background Technology

[0002] A nose hair trimmer is a beauty tool used to trim nose hairs. Some people experience nose hairs growing outside the nose due to hormonal imbalances, living in environments with poor air quality, or smoking, which can negatively impact their appearance.

[0003] There are two main types of nose hair trimmers: one type uses inner and outer cylindrical blades with slow cutting speed, which is mostly operated manually; the other type uses an outer blade to guide the nose hairs while simultaneously using an internal high-speed rotating blade for cutting.

[0004] Nasal hairs typically grow towards the center of the nasal cavity, forming an irregular network that serves as the first line of defense against respiratory diseases. However, observations have revealed that some nasal hairs, influenced by their follicles and surrounding tissues or other nasal hairs, change direction during growth and may grow along the inner wall of the nasal cavity. Additionally, nasal hairs located in the depressions on either side of the nasal vestibule tend to grow more haphazardly due to the limited space.

[0005] Existing nose hair trimmers, for safety reasons, only have rounded corners on the outer wall of the free end of the outer blade to prevent scratches, while the other surfaces are not treated at all. This results in an excessively large end face area and an excessively thick outer blade.

[0006] This results in several issues with existing nasal hair trimmers. For the former, when trimming the nasal hairs on the inner wall of the nasal cavity and in the nasal vestibule, the nasal hairs are not easily guided into the blade. The outer blade is too thick and cannot pick up the nasal hairs growing close to the inner wall of the nasal cavity, resulting in an unsatisfactory trimming effect. The latter has the same problem, and the nasal hairs are cut too finely, making them easy to be sucked into the nasal cavity, causing irritation and discomfort. Summary of the Invention

[0007] The primary objective of this invention is to address the shortcomings of the prior art by providing a cleverly designed nose hair trimmer head structure that can effectively cut abnormally growing nasal hairs that are attached to or near the inner wall of the nasal cavity, as well as nasal hairs located in the nasal vestibule.

[0008] A further object of the present invention is to provide a nose hair trimmer employing the above-described blade structure.

[0009] The preceding technical solution of the present invention is implemented as follows: a nose hair trimmer blade head includes an inner blade seat and an outer blade seat that are nested together. The upper end of the inner blade seat is provided with a plurality of inner blade heads evenly distributed along the circumference. The upper end of the outer blade seat is provided with a plurality of outer blade heads that cooperate with the inner blade heads evenly distributed along the circumference. The inner surface of the free end of the outer blade head is a first guide slope.

[0010] In the aforementioned nose hair trimmer blade head, the outer blade sides on both sides of the first guide slope are the second guide slopes, and the first guide slope, the second guide slope, and the outer blade sides cooperate to form a tower shape that is smaller at the top and larger at the bottom.

[0011] In the aforementioned nose hair trimmer head, the distance between two adjacent outer blades is 1.1-1.8mm; the distance between the upper ends of two adjacent outer blades is 1.4-2.5mm.

[0012] In the aforementioned nose hair trimmer head, the width W at the upper end of each outer blade is 0.1-0.5mm.

[0013] In the aforementioned nose hair trimmer head, a closed guide surface is provided at the center of the upper end face of the inner blade holder, and each inner blade head is provided at the edge of the guide surface; nose hairs entering the upper end of the inner blade holder are guided by the guide surface into the shearing section formed by the inner blade head and the outer blade head.

[0014] In the aforementioned nose hair trimmer head, the guide surface is conical with a high center and low sides, and the inclined surface of the guide surface extends smoothly to the edge of the outer blade holder.

[0015] In the aforementioned nose hair trimmer head, each inner blade head cooperates to form an inner blade assembly, and each outer blade head cooperates to form an outer blade assembly; the inner wall of the outer blade assembly and the outer wall of the inner blade assembly are in close contact, and the contours of the inner wall of the outer blade assembly and the outer wall of the inner blade assembly are mutually fitted into a frustum shape.

[0016] In the aforementioned nose hair trimmer head, the inner end face or the upper part of the inner end face of each inner blade is an inclined surface, and the upper part of the inclined surface is located at the lower end of the first guide inclined surface.

[0017] The latter technical solution of the present invention is implemented as follows: a nose hair trimmer using the above-mentioned blade, the trimmer including a blade connected to a drive structure.

[0018] In the aforementioned nose hair trimmer, the inner or outer blade holder is connected to an elastic self-tensioning structure that allows the inner and outer blades to fit together tightly.

[0019] In the aforementioned nose hair trimmer, the driving structure is either a manual driving structure or an electric driving structure.

[0020] In the aforementioned nose hair trimmer, the rotational speed of the rotating blade part is 100-500 r / min.

[0021] The aforementioned nose hair trimmer includes a base, an electric drive structure disposed within the base, and a blade connected to the free end of the base; an elastic self-tensioning structure is connected between the output end of the electric drive structure and the blade.

[0022] In the aforementioned nose hair trimmer, the elastic self-tensioning structure includes a connecting block connected to the free end of the output shaft of the electric drive structure, and a tension spring is sleeved on the output shaft of the electric drive structure at the bottom of the connecting block; a connecting head is provided at the upper end of the connecting block, and a connecting groove that mates with the connecting head is provided at the bottom of the inner blade holder.

[0023] The inner cutter holder is always in an upward-facing, pressed-up state under the action of the elastic self-tensioning structure, so that the inner and outer cutter heads are always in close contact.

[0024] With the above-mentioned structure, the present invention provides a first guiding slope on the inner side of the free end of the outer blade, so that the edge of the blade can form a notch for nasal hair to enter. Compared with the prior art, this notch is much closer to the inner wall of the nasal cavity, which allows the nasal hairs that grow close to or against the inner wall of the nasal cavity to be effectively cut, thereby improving the cutting efficiency. Attached Figure Description

[0025] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings, but this does not constitute any limitation on the present invention.

[0026] Figure 1 is a schematic diagram of the cutter head structure of the present invention;

[0027] Figure 2 is a cross-sectional schematic diagram of the cutter head structure of the present invention;

[0028] Figure 3 is an exploded structural diagram of the cutter head structure of the present invention;

[0029] Figure 4 is a schematic diagram of the notch formed by the blade of the present invention for introducing nasal hair;

[0030] Figure 5 is a schematic diagram of the existing technology for forming a notch for inserting nasal hair;

[0031] Figure 6 is a schematic diagram of the structure of the trimmer of the present invention;

[0032] Figure 7 is a cross-sectional view of the trimmer head of the present invention.

[0033] In the figure: 1. Inner tool holder; 1a. Inner tool head; 1b. Guide surface; 1c. Connecting groove; 2. Outer tool holder; 2a. Outer tool head; 3. First guide slope; 4. Second guide slope; 5. Tool head; 6. Seat body; 7. Connecting block; 7a. Connector; 8. Tensioning spring; 9. Notch. Detailed Implementation

[0034] Referring to Figures 1 to 3, a nose hair trimmer blade of the present invention includes an inner blade seat 1 and an outer blade seat 2 that are nested together. The upper end of the inner blade seat 1 is provided with a plurality of inner blades 1a evenly distributed along the circumference. The upper end of the outer blade seat 2 is provided with a plurality of outer blades 2a that cooperate with the inner blades 1a evenly distributed along the circumference. The inner surface of the free end of the outer blade 2a is a first guide slope 3.

[0035] Analysis of existing nasal hair trimmer blades revealed that, apart from a rounded corner on the outer end face, the free end of the outer blade lacked any other treatment, as shown in Figure 5. This resulted in a relatively thick free end, requiring the upper part of the outer blade to be located relatively far from the nasal cavity wall to create an opening 9 for the nasal hair, leading to unsatisfactory cutting results. Therefore, by incorporating a first guiding bevel, the outer blade can create an opening closer to the nasal cavity wall, facilitating the entry of nasal hair and improving the cutting effect.

[0036] Preferably, the outer blade 2a sides on both sides of the first guide slope 3 are the second guide slope 4, and the first guide slope 3, the second guide slope 4, and the outer side of the outer blade 2a cooperate to form a tower shape that is smaller at the top and larger at the bottom. As shown in Figure 4, by setting the second guide slope, the opening of the notch is larger and closer to the inner wall of the nasal cavity, resulting in a better trimming effect for nasal hair. Comparing Figures 4 and 5, it can be seen that the distance between the outermost notch 9 formed by the present invention and the outer wall of the outer blade is W1, which is much smaller than the distance W2 between the outer wall of the outer blade and the nearest notch 9 in the prior art. This makes it very convenient for nasal hairs close to the nasal cavity to enter.

[0037] Furthermore, it should be emphasized that the first and second guide bevels can be either flat or curved surfaces, and the curved surfaces can be concave or convex. In this embodiment, since the cutter head is circular overall, the first guide bevel is a slightly concave arc shape, while the second guide bevel is flat. Theoretically, the upper part of the cutter head can also be ground to make it approximately frustum-shaped, in which case both the first and second guide bevels would be convex arc surfaces.

[0038] Through repeated experiments, it was found that the spacing between two adjacent outer blades 2a is 1.1-1.8 mm; the spacing between the upper ends of two adjacent outer blades 2a is 1.4-2.5 mm. Within the above parameter range, nasal hairs can be quickly guided into the blades and cut rapidly.

[0039] More preferably, the width W of the upper end of each outer blade 2a is 0.1-0.5mm. This allows the free end of the outer blade to be as thin and small as possible while ensuring safety, so as to better facilitate the entry of nasal hairs.

[0040] In this embodiment, a closed guide surface 1b is provided at the center of the upper end face of the inner tool holder 1, and each inner tool head 1a is provided at the edge of the guide surface 1b.

[0041] The nasal hairs that enter the upper part of the inner blade holder 1 are guided by the guide surface 1b into the shearing section formed by the inner blade head 1a and the outer blade head 2a.

[0042] More preferably, the guide surface 1b is conical in shape, higher in the middle and lower on both sides, and the inclined surface of the guide surface extends smoothly to the edge of the outer blade holder 2. The guide surface can guide the nasal hair into the cutting opening. Experiments have shown that when the guide surface is conical, the nasal hair will not spin freely within the guide surface, but will quickly enter the nearest cutting opening instead of being randomly guided to other cutting openings or spinning freely because the guide surface is flat.

[0043] More preferably, each inner cutter head 1a cooperates to form an inner cutter assembly, and each outer cutter head 2a cooperates to form an outer cutter assembly; the inner wall of the outer cutter assembly and the outer wall of the inner cutter assembly are in close contact, and the contours of the inner wall of the outer cutter assembly and the outer wall of the inner cutter assembly are in a mutually cooperating frustum shape.

[0044] This structure allows the inner and outer blade components to fit tightly together, preventing gaps between them. At the same time, during operation, the tight fit allows the blades of the inner and outer blade components to be sharpened, keeping them sharp and ensuring the cutting effect.

[0045] More preferably, the inner end face or upper part of the inner end face of each inner blade 1a is a slope, and the upper part of the slope is located below the first guide slope. This slope design allows the upper part of the inner blade to be as close as possible to the outer blade, preventing the inner side of the inner blade from protruding and scratching the nose during rotation, or causing scratches when the user touches the blade with their fingers or other body parts while the trimmer is in operation. It also allows the nasal hair to be smoothly guided into the cutting section for trimming, preventing the nasal hair from getting stuck at the step between the inner and outer blades. Furthermore, this slope preferably extends along the first guide slope, which further facilitates the smoother guidance of nasal hair into the inner blade.

[0046] Referring to Figures 4 and 5, a nose hair trimmer of the present invention employing the aforementioned blade head includes a blade head 5 connected to a drive structure. The drive structure can be a manual drive structure or an electric drive structure. Of course, both manual and electric drive structures can adopt conventional structures in the art, which are not the focus of this application and will not be elaborated upon here. In this embodiment, the drive structure is an electric drive structure. It should be emphasized that although the structure can be the same, the rotational speed of the electric drive structure in this embodiment differs from that in the prior art. In this embodiment, the rotational speed of the rotating component of the blade head 5 connected to the electric drive structure is 100-500 r / min. Preferably, the rotational speed is 200-350 r / min. Experiments have shown that at this rotational speed, combined with the blade head structure, most nose hairs can be trimmed to a length of 2-5 mm, a length that is easy for the user to remove from the nasal cavity.

[0047] In existing technologies, the rotational speed of electrically driven structures is typically above 1000 rpm. This is because their method of trimming nasal hair involves using internally rotating high-speed blades to shave the hairs. When the blades rotate at a slower speed, they cannot shave the hairs properly. While this method can trim nasal hairs, the resulting hairs are extremely fine, mostly 0.1-1 mm in length, and are in powder form. These hairs not only easily adhere to the nasal cavity wall, irritating the nasal cavity and causing discomfort, but they are also easily inhaled.

[0048] Meanwhile, the inner cutter holder 1 or the outer cutter holder 2 is connected to an elastic self-tensioning structure that ensures a tight fit between the inner cutter head 1a and the outer cutter head 2a. This elastic self-tensioning structure ensures that the inner and outer cutter heads are always in a tight-fitting state.

[0049] Preferably, the trimmer includes a base 6, the electric drive structure is disposed inside the base 6, and the cutter head 5 is connected to the free end of the base 6; an elastic self-tensioning structure is connected between the output end of the electric drive structure and the cutter head 5.

[0050] In this embodiment, the elastic self-tensioning structure includes a connecting block 7 connected to the free end of the output shaft of the electric drive structure, and a tension spring 8 is sleeved on the output shaft of the electric drive structure at the bottom of the connecting block 7; a connecting head 7a is provided at the upper end of the connecting block 7, and a connecting groove 1c that mates with the connecting head 7a is provided at the bottom of the inner tool holder 1; the inner tool holder 1 is always in an upward pressing state under the action of the elastic self-tensioning structure, so that the inner tool head 1a and the outer tool head 2a are always in close contact.

[0051] When in operation, pressing the switch activates the electric drive mechanism, which, through the connector and connecting groove, drives the inner blade to rotate, thereby enabling the inner and outer blade assemblies to work together to cut nose hairs.

[0052] In particular, when trimming nasal hairs that grow horizontally, are close to the inner wall of the nasal cavity, or are located in the nasal vestibule, the notch for guiding the nasal hairs into the cutting section is formed near the outer wall of the outer blade due to the setting of the first guiding bevel, which can effectively guide and cut the nasal hairs located in the above-mentioned special positions.

[0053] The above-described embodiments are preferred embodiments of the present invention and are only used to facilitate the illustration of the present invention. They are not intended to limit the present invention in any way. Any person skilled in the art who makes local modifications or alterations to the technical content disclosed in the present invention without departing from the scope of the technical features of the present invention shall still fall within the scope of the technical features of the present invention.

Claims

1. A nose hair trimmer blade, comprising an inner blade holder (1) and an outer blade holder (2) nested together, wherein a plurality of inner blades (1a) are evenly distributed circumferentially at the upper end of the inner blade holder (1), and a plurality of outer blades (2a) cooperating with the inner blades (1a) are evenly distributed circumferentially at the upper end of the outer blade holder (2), characterized in that, The inner surface of the free end of the outer cutter head (2a) is the first guide slope (3).

2. The nose hair trimmer blade according to claim 1, characterized in that, The outer blade (2a) sides of the first guide slope (3) are the second guide slope (4). The first guide slope (3), the second guide slope (4) and the outer blade (2a) sides are arranged in a tower shape with the top smaller and the bottom larger.

3. The nose hair trimmer blade according to claim 1, characterized in that, The distance between two adjacent outer cutter heads (2a) is 1.1-1.8 mm; the distance between the upper ends of two adjacent outer cutter heads (2a) is 1.4-2.5 mm.

4. The nose hair trimmer blade according to claim 1, characterized in that, The width W at the upper end of each external cutter head (2a) is 0.1-0.5mm.

5. The nose hair trimmer blade according to claim 1, characterized in that, The inner tool holder (1) has a closed guide surface (1b) at the center of its upper end face, and each inner tool head (1a) is located at the edge of the guide surface (1b). Nasal hairs entering the upper part of the inner blade holder (1) are guided by the guide surface (1b) into the shearing section formed by the inner blade head (1a) and the outer blade head (2a).

6. The nose hair trimmer blade according to claim 5, characterized in that, The guide surface (1b) is conical in shape, with a high center and low sides, and the inclined surface of the guide surface extends smoothly to the edge of the outer tool holder (2).

7. The nose hair trimmer blade according to claim 1, characterized in that, Each inner cutter head (1a) cooperates to form an inner cutter assembly, and each outer cutter head (2a) cooperates to form an outer cutter assembly; the inner wall of the outer cutter assembly and the outer wall of the inner cutter assembly are in close contact, and the outline of the inner wall of the outer cutter assembly and the outline of the outer wall of the inner cutter assembly are in a mutually cooperating frustum shape.

8. The nose hair trimmer blade according to claim 1, characterized in that, Each inner end face (1a) has an inner end face or an upper part of the inner end face as an inclined surface, and the upper part of the inclined surface is located at the lower end of the first guide inclined surface (3).

9. A nose hair trimmer, characterized in that, The trimmer includes a blade (5) as described in any one of claims 1-8, the blade (5) being connected to a drive structure.

10. A nose hair trimmer according to claim 9, characterized in that, The inner cutter holder (1) or the outer cutter holder (2) is connected to an elastic self-tensioning structure that allows the inner cutter head (1a) and the outer cutter head (2a) to fit together tightly.

11. A nose hair trimmer according to claim 9, characterized in that, The drive structure can be a manual drive structure or an electric drive structure.

12. A nose hair trimmer according to claim 9, characterized in that, The rotational speed of the rotating part of the cutter head (5) is 100-500 r / min.

13. A nose hair trimmer according to claim 12, characterized in that, The trimmer includes a base (6), the electric drive structure is disposed inside the base (6), and the cutter head (5) is connected to the free end of the base (6); an elastic self-tensioning structure is connected between the output end of the electric drive structure and the cutter head (5).

14. A nose hair trimmer according to claim 13, characterized in that, The elastic self-tensioning structure includes a connecting block (7) connected to the free end of the output shaft of the electric drive structure, and a tension spring (8) is sleeved on the output shaft of the electric drive structure at the bottom of the connecting block (7); a connecting head (7a) is provided at the upper end of the connecting block (7), and a connecting groove (1c) that cooperates with the connecting head (7a) is provided at the bottom of the inner tool holder (1); The inner cutter holder (1) is always in an upward pressing state under the action of the elastic self-tensioning structure, so that the inner cutter head (1a) and the outer cutter head (2a) are always in close contact.

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