Cutter head assembly structure for nose hair trimmer, and nose hair trimmer using assembly structure

Abstract

A cutter head assembly structure for a nose hair trimmer, and a nose hair trimmer using the structure, belonging to the technical field of nose hair trimmers. The cutter head assembly structure comprises an inner cutter holder and an outer cutter holder, which are sleeved with each other, wherein an inner cutter assembly is provided at the upper end of the inner cutter holder and consists of a plurality of inner cutter heads uniformly distributed at intervals along the edge of the inner cutter holder; an outer cutter assembly is provided at the upper end of the outer cutter holder and consists of a plurality of outer cutter heads uniformly distributed at intervals along the edge of the outer cutter holder and mating with the inner cutter heads; and an inner wall of the outer cutter assembly closely fits against an outer wall of the inner cutter assembly, and the contour of the inner wall of the outer cutter assembly and the contour of the outer wall of the inner cutter assembly are in fitted truncated cone shapes.

Description

A nose hair trimmer blade assembly structure and a nose hair trimmer using the same assembly structure. Technical Field

[0001] This utility model relates to a blade head, and more specifically, to an assembly structure for a nose hair trimmer blade head. This utility model also relates to a nose hair trimmer employing this assembly structure. 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 uses inner and outer cylindrical blades with slow cutting speed, which is mostly operated manually; the other uses an outer blade to guide the nose hair while simultaneously cutting with an internal high-speed rotating blade. This section mainly introduces the former type. In this type, both the inner and outer cylindrical blades are cylindrical. During assembly, the precision of the inner and outer blades' machining is crucial. However, due to limitations in machining precision, a certain gap inevitably exists between the inner and outer blades. When the gap is too large or the assembly precision is low, the inner and outer blades are prone to colliding, causing damage to either the inner or outer blade and thus affecting the cutting effect.

[0004] Utility Model Content

[0005] The primary objective of this invention is to address the shortcomings of the prior art by providing a nose hair trimmer blade assembly structure that offers good assembly results, tight fit between the inner and outer blades, and excellent cutting performance.

[0006] The latter objective of this invention is to provide a nose hair trimmer employing the above-described assembly structure.

[0007] The preceding technical solution of this utility model is implemented as follows: a nose hair trimmer blade assembly structure 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 an inner blade assembly, which is composed of a plurality of inner blades evenly distributed along the edge of the inner blade seat.

[0008] The upper end of the outer tool holder is provided with an outer tool assembly, which consists of a number of outer tool heads that are evenly distributed along the edge of the outer tool holder and cooperate with the inner tool head. The inner wall of the outer tool assembly and the outer wall of the inner tool assembly are in close contact, and the outlines of the inner wall of the outer tool assembly and the outer wall of the inner tool assembly are in a frustum shape that cooperates with each other.

[0009] In the above-mentioned nose hair trimmer blade assembly structure, a closed guide surface is provided at the center of the upper end face of the inner blade holder, and the inner blade assembly 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 part formed by the inner blade head and the outer blade head.

[0010] In the aforementioned nose hair trimmer blade assembly structure, 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.

[0011] In the aforementioned nose hair trimmer blade assembly structure, the included angle between the outer shearing blade located at the inner end of the outer blade and the inner shearing blade located at the outer end of the inner blade and cooperating with it is 3-25°.

[0012] In the aforementioned nose hair trimmer blade assembly structure, the inner side of the free end of the outer blade is a first guide slope, and the outer blade sides on both sides of the first guide slope are second guide slopes. The first guide slope, the second guide slope, and the outer blade sides cooperate to form a frustum shape that is smaller at the top and larger at the bottom.

[0013] The latter technical solution of this utility model is implemented as follows: a nose hair trimmer, the trimmer including the above-mentioned blade assembly structure, the blade assembly structure being connected to a drive structure.

[0014] 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.

[0015] In the aforementioned nose hair trimmer, the driving structure is either a manual driving structure or an electric driving structure.

[0016] The aforementioned nose hair trimmer includes a base, an electric drive structure disposed within the base, and a blade assembly structure 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 assembly structure.

[0017] 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.

[0018] The upper end of the connecting block is provided with a connector, and the bottom of the inner cutter holder is provided with a connecting groove that mates with the connector; the inner cutter holder is always in an upward pressing state under the action of the elastic self-tensioning structure, so that the inner cutter head and the outer cutter head are always in close contact.

[0019] By adopting the above-described structure, this invention designs the inner wall contour of the outer blade assembly and the outer wall contour of the inner blade assembly into a mutually fitting frustum shape. This allows the inner wall of the outer blade assembly and the outer wall of the inner blade assembly to fit tightly together. Simultaneously, this tight fit also allows for the grinding of the inner and outer blades, ensuring they remain sharp and thus guaranteeing the cutting effect. Attached Figure Description

[0020] 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.

[0021] Figure 1 is a schematic diagram of the cutter head structure of this utility model;

[0022] Figure 2 is a cross-sectional structural schematic diagram of the cutter head structure of this utility model;

[0023] Figure 3 is an exploded structural diagram of the cutter head structure of this utility model;

[0024] Figure 4 is a structural schematic diagram of the trimmer of this utility model;

[0025] Figure 5 is a cross-sectional view of the cutter head of this utility model.

[0026] In the figure: 1. Inner tool holder; 1a. Guide surface; 1b. Connecting groove; 2. Outer tool holder; 3. Inner tool assembly; 3a. Inner tool head; 4. Outer tool assembly; 4a. Outer tool head; 5. First guide slope; 6. Second guide slope; 7. Seat body; 8. Connecting block; 8a. Connector; 9. Tensioning spring. Detailed Implementation

[0027] Referring to Figures 1 to 3, the present invention provides a nose hair trimmer blade assembly structure, which 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 an inner blade assembly 3, which is composed of a plurality of inner blades 3a evenly distributed along the edge of the inner blade seat 1.

[0028] The outer blade holder 2 is provided with an outer blade assembly 4 at its upper end. The outer blade assembly 4 is composed of a plurality of outer blades 4a that are evenly distributed along the edge of the outer blade holder 2 and cooperate with the inner blade 3a. The outer blade assembly 4 is characterized in that the inner wall of the outer blade assembly 4 and the outer wall of the inner blade assembly 3 are in close contact, and the outline of the inner wall of the outer blade assembly 4 and the outline of the outer wall of the inner blade assembly 3 are in a frustum shape that cooperates with each other.

[0029] 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.

[0030] Compared to the columnar assembly of inner and outer blades in existing technologies, this method relies on the machining precision of the inner and outer blades for assembly. However, due to limitations in machining precision, there will inevitably be a certain gap between the inner and outer blades. When the gap is too large or the assembly precision is not high, the inner and outer blades are prone to collision, causing damage to the inner or outer blade edge and thus affecting the shearing effect.

[0031] Preferably, the upper end face of the inner blade holder 1 is provided with a closed guide surface 1a, and the inner blade assembly 3 is provided at the edge of the guide surface 1a.

[0032] The nasal hairs that enter the upper part of the inner blade holder 1 are guided by the guide surface 1a into the shearing section formed by the inner blade head 3a and the outer blade head 4a.

[0033] More preferably, the guide surface 1a 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 tool holder 2.

[0034] The guide surface can guide nasal hairs into the shearing opening. Experiments have shown that when the guide surface is conical, the nasal hairs will not spin freely within the guide surface, but will quickly enter the nearest shearing opening instead of being randomly guided to other shearing openings or spinning freely because the guide surface is flat.

[0035] More preferably, the included angle between the outer shearing blade located at the inner end of the outer blade 4a and the inner shearing blade located at the outer end of the inner blade 3a and cooperating therewith is 3-25°. The included angle between the inner and outer shearing blades is preferably 15°±5°. Within a reasonable included angle range, the inner and outer shearing blades are scissor-shaped and can effectively cut nose hairs, avoiding the phenomenon of plucking nose hairs.

[0036] More preferably, the inner side of the free end of the outer blade 4a is a first guide slope 5, and the sides of the outer blade 4a on both sides of the first guide slope 5 are second guide slopes 6. The first guide slope 5, the second guide slope 6 and the outer side of the outer blade 4a cooperate to form a frustum shape that is smaller at the top and larger at the bottom.

[0037] Referring to Figures 4 and 5, this utility model discloses a nose hair trimmer, which includes the aforementioned blade assembly structure, and the blade assembly structure is connected to a drive structure. The drive structure can be a manual drive structure or an electric drive structure; in this embodiment, the drive structure is an electric drive structure. Whether it is a manual or electric drive structure, conventional structures in the art can be adopted, and these are not the technical points to be protected in this application, and will not be described further here.

[0038] Preferably, the inner cutter holder 1 or the outer cutter holder 2 is connected to an elastic self-tensioning structure that tightly engages the inner cutter head 3a and the outer cutter head 4a. This elastic self-tensioning structure ensures that the inner and outer cutter heads are always in a tightly fitted state.

[0039] Preferably, the trimmer includes a base 7, the electric drive structure is disposed inside the base 7, and the cutter head assembly structure is connected to the free end of the base 7; an elastic self-tensioning structure is connected between the output end of the electric drive structure and the cutter head assembly structure.

[0040] In this embodiment, the elastic self-tensioning structure includes a connecting block 8 connected to the free end of the output shaft of the electric drive structure, and a tension spring 9 is sleeved on the output shaft of the electric drive structure at the bottom of the connecting block 8. The tension spring allows the outer wall of the inner blade assembly and the inner wall of the outer blade assembly to fit tightly together, ensuring the cutting effect while simultaneously sharpening the inner and outer blade edges to keep them always sharp.

[0041] The upper end of the connecting block 8 is provided with a connector 8a, and the bottom of the inner tool holder 1 is provided with a connecting groove 1b that mates with the connector 8a. This straight-line assembly structure allows the inner and outer tool holders to maintain good transmission even when there is a certain difference in precision.

[0042] Under the action of the elastic self-tensioning structure, the inner cutter holder 1 is always in an upward pressing state, so that the inner cutter head 3a and the outer cutter head 4a are always in close contact.

[0043] 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.

[0044] The above-described embodiments are preferred embodiments of the present utility model and are only used to facilitate the illustration of the present utility model. They are not intended to limit the present utility model in any way. Any person skilled in the art who makes partial modifications or alterations to the technical content disclosed in the present utility model without departing from the scope of the technical features of the present utility model shall still fall within the scope of the technical features of the present utility model.

Claims

1. A nose hair trimmer blade assembly structure, comprising an inner blade seat (1) and an outer blade seat (2) that are nested together, wherein the upper end of the inner blade seat (1) is provided with an inner blade assembly (3), and the inner blade assembly (3) is composed of a plurality of inner blades (3a) evenly distributed along the edge of the inner blade seat (1); The outer tool holder (2) is provided with an outer tool assembly (4) at its upper end. The outer tool assembly (4) is composed of a plurality of outer tool heads (4a) evenly distributed along the edge of the outer tool holder (2) and cooperating with the inner tool head (3a). Its characteristic is that... The inner wall of the outer blade assembly (4) and the outer wall of the inner blade assembly (3) are closely attached, and the outline of the inner wall of the outer blade assembly (4) and the outline of the outer wall of the inner blade assembly (3) are in a frustum shape that matches each other.

2. The nose hair trimmer blade assembly structure according to claim 1, characterized in that, The inner knife holder (1) has a closed guide surface (1a) at the center of its upper end face, and the inner knife assembly (3) is located at the edge of the guide surface (1a); Nasal hairs entering the upper part of the inner blade holder (1) are guided by the guide surface (1a) into the shearing section formed by the inner blade head (3a) and the outer blade head (4a).

3. The nose hair trimmer blade assembly structure according to claim 2, characterized in that... The guide surface (1a) 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).

4. The nose hair trimmer blade assembly structure according to claim 1, characterized in that, The included angle between the outer shearing blade located at the inner end of the outer cutter head (4a) and the inner shearing blade located at the outer end of the inner cutter head (3a) and cooperating with it is 3-25°.

5. The nose hair trimmer blade assembly structure according to claim 1, characterized in that, The inner side of the free end of the outer cutter head (4a) is a first guide slope (5), and the sides of the outer cutter head (4a) on both sides of the first guide slope (5) are second guide slopes (6). The first guide slope (5), the second guide slope (6) and the outer side of the outer cutter head (4a) are combined to form a frustum shape with a smaller top and a larger bottom.

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

7. A nose hair trimmer according to claim 6, 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 (3a) and the outer cutter head (4a) to fit together tightly.

8. A nose hair trimmer according to claim 6, characterized in that, The drive structure can be a manual drive structure or an electric drive structure.

9. A nose hair trimmer according to claim 8, characterized in that, The trimmer includes a base (7), the electric drive structure is disposed inside the base (7), and the cutter head assembly structure is connected to the free end of the base (7); an elastic self-tensioning structure is connected between the output end of the electric drive structure and the cutter head assembly structure.

10. A nose hair trimmer according to claim 9, characterized in that, The elastic self-tensioning structure includes a connecting block (8) connected to the free end of the output shaft of the electric drive structure, and a tensioning spring (9) is sleeved on the output shaft of the electric drive structure at the bottom of the connecting block (8). The upper end of the connecting block (8) is provided with a connector (8a), and the bottom of the inner tool holder (1) is provided with a connecting groove (1b) that mates with the connector (8a); 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 (3a) and the outer cutter head (4a) are always in close contact.

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