A cutting head assembly and a rotary hair cutting device

Abstract

The utility model relates to hair cutting device technical field, and specifically disclose a cutter head subassembly and rotate when hair cutting device, wherein the cutter head subassembly includes first mounting support and can float static knife of installing on first mounting support, be provided with soft quality spare on the inner hole wall of first mounting support, soft quality spare sets up between static knife with first mounting support, and the turn -up of static knife is in contact with the bottom surface of soft quality spare, there is gap between the lateral wall of static knife with soft quality spare. Because setting up soft quality spare between first mounting support and static knife, and the turn -up of static knife is in contact with the bottom surface of soft quality spare, there is gap between the lateral wall of static knife with soft quality spare, can make static knife have the space of floating, simultaneously, through the turn -up of static knife is in contact with the bottom surface of soft quality spare and combines the existence interval between the lateral wall of static knife with soft quality spare, can limit the floating amplitude of static knife and through the contact of static knife and soft quality spare, to realize the effect of reducing noise and vibration.

Description

Technical Field

[0001] This utility model relates to the technical field of hair cutting devices, and in particular to a blade assembly and a hair cutting device that rotates. Background Technology

[0002] A hair trimmer is a tool or device used for trimming and cutting hair. Hair trimmers are divided into reciprocating and rotary types. Rotary hair trimmers primarily use a high-speed rotating circular blade to cut hair, and with the help of a floating structure for the blade, they can achieve advantages such as efficient hair cutting, conforming to contours, and comfortable use. However, in existing rotary hair trimmers, the stationary blade comes into contact with the stationary blade mounting bracket during the floating process, generating significant noise and vibration, resulting in a poor user experience. Utility Model Content

[0003] The present invention aims to solve the above-mentioned technical problems existing in the prior art, and provides a blade assembly that can reduce noise and vibration, as well as a rotary hair cutting device.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] The present invention discloses a blade assembly, comprising a first mounting bracket and a stationary blade mounted on the first mounting bracket and capable of floating. A soft component is disposed on the inner wall of the first mounting bracket, the soft component being disposed between the stationary blade and the first mounting bracket, and the flange on the stationary blade contacting the bottom surface of the soft component. A gap exists between the side wall of the stationary blade and the soft component.

[0006] The blade assembly described in this utility model features a flexible component positioned between the first mounting bracket and the stationary blade. The flange on the stationary blade contacts the bottom surface of the flexible component, and a gap exists between the sidewall of the stationary blade and the flexible component. This allows the stationary blade to float. Simultaneously, the contact between the flange of the stationary blade and the bottom surface of the flexible component, combined with the gap between the sidewall of the stationary blade and the flexible component, limits the floating amplitude of the stationary blade. Furthermore, the contact between the stationary blade and the flexible component reduces noise and vibration, avoiding the significant vibration and noise generated by the contact of two rigid components in the prior art, thus improving the user experience.

[0007] Furthermore, the soft part is provided with a downwardly extending limiting part, and the flange of the stationary blade is provided with a notch, and the limiting part on the soft part extends into the notch on the flange of the stationary blade.

[0008] Furthermore, the soft component is provided with a plurality of protrusions that protrude toward the stationary blade at intervals, the ends of the protrusions protruding to the inner wall of the first mounting bracket, and the protrusions having gaps with the side wall of the stationary blade.

[0009] Furthermore, the flexible component is ring-shaped; or the flexible component includes multiple arc-shaped segments, with the multiple segments arranged in a ring array at intervals.

[0010] Furthermore, the inner wall of the first mounting bracket is provided with a stepped surface for mounting the flexible component, and the flexible component and the first mounting bracket are integrally connected by integral molding.

[0011] Furthermore, a groove is provided on the inner wall of the first mounting bracket, and the cutter head assembly also includes a floating bracket. At least a portion of the edge of the floating bracket extends into the groove in the inner wall of the first mounting bracket, and the floating bracket can float relative to the groove in the inner wall of the first mounting bracket; the floating bracket is provided with a contact portion that contacts the stationary cutter.

[0012] Furthermore, the tank includes a first sidewall located on one side of the soft component, and the bottom surface of the soft component is flush with the first sidewall of the tank.

[0013] Furthermore, a boss is provided on the inner wall of the first mounting bracket, and the groove includes a second side wall, with the top surface of the boss flush with the second side wall of the groove.

[0014] Furthermore, the cutter head assembly also includes a second mounting bracket, the inner wall of which is provided with a buckle, and the first mounting bracket is provided with a snap hole for engaging with the buckle.

[0015] The present invention discloses a rotary hair cutting device, which includes a handle and the aforementioned blade assembly, wherein the blade assembly is connected to the handle.

[0016] The rotary hair cutting device described in this utility model has all the beneficial technical effects it brings because it has the above-mentioned blade assembly, which will not be described in detail here. Attached Figure Description

[0017] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.

[0018] Figure 1This is a schematic diagram of the cutter head assembly structure in this utility model (excluding the mounting housing and internal transmission structure).

[0019] Figure 2 for Figure 1 A sectional view.

[0020] Figure 3 and Figure 4 This is a schematic diagram of the first mounting bracket and the soft component assembly structure from different directions.

[0021] Figure 5 for Figure 1 A schematic diagram of its breakdown.

[0022] Figure 6 This is a schematic diagram of the rotary hair cutting device in this utility model.

[0023] The components include: a first mounting bracket 1; a stationary blade 2; a soft part 3; a flange 4; a second mounting bracket 5; a hook 6; a mounting housing 7; a limiting part 8; a notch 9; a protrusion 10; a stepped surface 11; a groove 12; a floating bracket 13; a contact part 14; a first side wall 15; a boss 16; a second side wall 17; a buckle 18; a locking hole 19; an elastic locking component 20; a moving blade 21; and a handle 22. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0025] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] This utility model specifically provides an embodiment of a cutter head assembly, see [link to embodiment]. Figure 1 and 2The assembly includes a first mounting bracket 1 and a floating stationary blade 2 (also referred to as a "fixed blade") mounted on the first mounting bracket 1. A soft component 3 is provided on the inner wall of the first mounting bracket 1, positioned between the stationary blade 2 and the first mounting bracket 1. The flange 4 on the stationary blade 2 contacts the bottom surface of the soft component 3, and there is a gap between the side wall of the stationary blade 2 and the soft component 3. There can be one or more first mounting brackets 1 and stationary blades 2, with the number of first mounting brackets 1 corresponding to the number of stationary blades 2, and the structure of the first mounting brackets 1 and stationary blades 2 in each group is identical. In this embodiment, three first mounting brackets 1 and three stationary blades 2 are provided. Specifically, the blade assembly also includes a second mounting bracket 5, on which three mounting areas are spaced apart. Each area is equipped with one first mounting bracket 1 and one stationary blade 2, and the three mounting areas are arranged in a triangular pattern. The second mounting bracket 5 is engaged with the mounting housing 7 of the blade assembly via a hook 6 at its bottom. The first mounting bracket 1 can be made of hard plastic, such as polypropylene, polystyrene, resin, nylon, or other plastic materials; the soft component 3 can be made of soft and elastic materials such as silicone, rubber, soft PVC, or polyurethane elastomer. Because the soft component 3 is positioned between the first mounting bracket 1 and the stationary blade 2, and the flange 4 on the stationary blade 2 contacts the bottom surface of the soft component 3, and there is a gap between the side wall of the stationary blade 2 and the soft component 3, the stationary blade 2 has room to float. Simultaneously, the contact between the flange 4 of the stationary blade 2 and the bottom surface of the soft component 3, combined with the gap between the side wall of the stationary blade 2 and the soft component 3, limits the floating amplitude of the stationary blade 2. The contact between the stationary blade 2 and the soft component 3 also reduces noise and vibration, avoiding the large vibrations and noise generated by the contact of two hard components in existing technologies, thus improving the user experience. The gap between the side wall of the stationary blade 2 and the soft component 3 is 1mm-2mm to ensure that the stationary blade 2 can float, but the floating amplitude is not excessive.

[0028] In the preferred embodiment, see Figure 2-4 The soft part 3 is provided with a downwardly extending limiting part 8, and the flange 4 of the stationary knife 2 is provided with a notch 9. The limiting part 8 on the soft part 3 extends into the notch 9 on the flange 4 of the stationary knife 2. Through the cooperation between the notch 9 on the stationary knife 2 and the limiting part 8 on the soft part 3, the stationary knife 2 can be prevented from rotating, thereby ensuring that the stationary knife 2 floats in its axial direction.

[0029] In the preferred embodiment, see Figure 3-4The soft component 3 has multiple protrusions 10 spaced apart and protruding towards the stationary blade 2. The ends of the protrusions 10 protrude into the inner wall of the first mounting bracket 1. Thus, during the floating process of the stationary blade 2, only the protrusions 10 on the soft component 3 contact the side wall of the stationary blade 2, so as to avoid the side wall of the stationary blade 2 and the soft component 3 having too large a contact area, which would lead to excessive friction and prevent the stationary blade 2 from floating smoothly. At the same time, when not in operation, there is a gap between the side wall of the stationary blade 2 and the protrusions 10 of the soft component 3, with a gap range of 1mm-2mm, to ensure that the stationary blade 2 has floating space during operation. The surface of the protrusions 10 is arc-shaped to further reduce the contact area between the side wall of the stationary blade 2 and the protrusions 10, ensuring that the stationary blade 2 can float smoothly while also effectively reducing vibration and noise.

[0030] In the preferred embodiment, see Figure 3-4 The soft component 3 can be ring-shaped; the soft component 3 can also include multiple arc segments, with multiple arc segments arranged in a ring array at intervals. In this case, a protrusion 10 is provided on each arc segment, and a limiting part 8 can be provided on any arc segment.

[0031] In the preferred embodiment, see Figure 2 The inner wall of the first mounting bracket 1 is provided with a stepped surface 11 for mounting the soft part 3. This allows the soft part 3 to be exposed so that it can contact the flange 4 of the stationary knife 2, provided that the connection area between the soft part 3 and the first mounting bracket 1 is sufficient to ensure a secure connection. In addition, the soft part 3 and the first mounting bracket 1 are integrally connected by molding, such as by two-color injection molding, which further ensures that the soft part 3 is securely connected to the first mounting bracket 1.

[0032] In the preferred embodiment, see Figure 1-5 A groove 12 is provided on the inner wall of the first mounting bracket 1. The cutter head assembly also includes a floating bracket 13. At least a portion of the edge of the floating bracket 13 extends into the groove 12 in the inner wall of the first mounting bracket 1, and the floating bracket 13 can float relative to the groove 12. Specifically, the thickness of the portion of the floating bracket 13 extending into the groove 12 is less than the width of the two side walls of the groove 12, thereby providing space for the floating bracket 13 to float. The floating bracket 13 is provided with a contact portion 14 that contacts the stationary cutter 2. Through the contact portion 14 of the floating bracket 13 contacting the stationary cutter 2, support can be provided when the stationary cutter 2 floats. There can be multiple contact portions 14 on the floating bracket 13, distributed in a ring array, which can provide stable support for the stationary cutter 2.

[0033] In the preferred embodiment, see Figure 4 and 5The tank 12 includes a first sidewall 15, which is located on one side of the soft component 3. The bottom surface of the soft component 3 is flush with the first sidewall 15 of the tank 12. Specifically, the bottom surface of the limiting part 8 of the soft component 3 is flush with the first sidewall of the tank 12, so that when the floating support 13 floats, it can contact the bottom surface of the limiting part 8 of the soft component 3, thereby further reducing noise and vibration.

[0034] In the preferred embodiment, see Figure 4 and 5 A boss 16 is provided on the inner wall of the first mounting bracket 1, and the groove 12 includes a second side wall 17. The top surface of the boss 16 is flush with the second side wall 17 of the groove 12. By setting the boss 16 to restrict the floating bracket 13, it is further prevented from detaching from the groove 12 during operation.

[0035] In the preferred embodiment, see Figure 1-5 The cutter head assembly also includes a second mounting bracket 5. A snap fastener 18 is provided on the inner wall of the second mounting bracket 5, and a snap hole 19 is provided on the first mounting bracket 1 for engaging with the snap fastener 18. The cutter head assembly is maintained and cleaned through the cooperation of the snap fastener 18 and the snap hole 19. Additionally, an inclined elastic snap fastener 20 is provided on the floating bracket 13. The elastic snap fastener 20 is positioned opposite the snap fastener 18 and is staggered vertically. The snap hole 19 is T-shaped. When the first mounting bracket 1 is assembled onto the second mounting bracket 5, the snap hole 19 portion of the first mounting bracket 1 is inserted between the elastic snap fastener 20 and the snap fastener 18. The snap fastener 18 snaps into the smaller portion of the snap hole 19, while the elastic snap fastener 20 elastically resets and snaps into the larger portion of the snap hole 19, effectively engaging the first mounting bracket 1. Furthermore, the second mounting bracket 5 can be provided with multiple mounting areas, such as two or three. In this embodiment, three mounting areas are provided, and a structure consisting of a stationary blade 2, a first mounting bracket 1, and a floating bracket 13 is installed in each of the three mounting areas. Each mounting area is also provided with a moving blade 21, which is used to cooperate with the stationary blade 2 in that area to cut hair.

[0036] The rotary hair cutting device described in this utility model, see [link to relevant documentation]. Figure 1-6The device includes a handle 22 and the aforementioned blade assembly, which is connected to the handle 22. Specifically, a drive mechanism, such as a motor, is provided in the handle 22. The output shaft of the drive mechanism is connected to a transmission structure inside the blade assembly, and the transmission structure is connected to the moving blade 21. Thus, driven by the drive mechanism, the moving blade 21 is moved relative to the stationary blade 2 via the transmission structure, thereby cutting the hair. The transmission structure and its connection to the moving blade 21 are existing technologies and are not the focus of this invention. The rotary hair cutting device of this invention, due to the aforementioned blade assembly, significantly reduces vibration and noise during operation, resulting in a better user experience.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A cutter head assembly, comprising a first mounting bracket and a stationary cutter mounted on the first mounting bracket and capable of floating, characterized in that: A flexible component is provided on the inner wall of the first mounting bracket. The flexible component is disposed between the stationary blade and the first mounting bracket, and the flange on the stationary blade contacts the bottom surface of the flexible component. There is a gap between the side wall of the stationary blade and the flexible component.

2. The cutter head assembly according to claim 1, characterized in that: The soft part is provided with a downwardly extending limiting part, and the flange of the stationary knife is provided with a notch, and the limiting part on the soft part extends into the notch on the flange of the stationary knife.

3. The cutter head assembly according to claim 1, characterized in that: The soft component has a plurality of protrusions spaced apart and protruding toward the stationary blade. The ends of the protrusions protrude to the inner wall of the first mounting bracket, and there is a gap between the protrusions and the side wall of the stationary blade.

4. The cutter head assembly according to any one of claims 1-3, characterized in that: The flexible component is ring-shaped; or the flexible component includes multiple arc-shaped segments, and the multiple segment shapes are arranged in a ring array at intervals.

5. The cutter head assembly according to any one of claims 1-3, characterized in that: The inner wall of the first mounting bracket is provided with a stepped surface for mounting the flexible component, and the flexible component and the first mounting bracket are integrally connected by integral molding.

6. The cutter head assembly according to any one of claims 1-3, characterized in that: A groove is provided on the inner wall of the first mounting bracket. The cutter head assembly also includes a floating bracket. At least a portion of the edge of the floating bracket extends into the groove in the inner wall of the first mounting bracket, and the floating bracket can float relative to the groove in the inner wall of the first mounting bracket. The floating bracket is provided with a contact portion that contacts the stationary cutter.

7. The cutter head assembly according to claim 6, characterized in that: The tank includes a first sidewall located on one side of the soft component, and the bottom surface of the soft component is flush with the first sidewall of the tank.

8. The cutter head assembly according to claim 6, characterized in that: A boss is provided on the inner wall of the first mounting bracket, and the groove includes a second side wall, the top surface of the boss being flush with the second side wall of the groove.

9. The cutter head assembly according to any one of claims 1-3, characterized in that: The cutter head assembly also includes a second mounting bracket, the inner wall of which is provided with a buckle, and the first mounting bracket is provided with a snap hole for engaging with the buckle.

10. A rotary hair cutting device, comprising a handle, characterized in that: It also includes a blade assembly as described in any one of claims 1-9, the blade assembly being attached to the handle.

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