Tool bit structure of hair clipper

Abstract

The utility model relates to the technical field of hair clippers, in particular to a tool bit structure of a hair clipper, which comprises the hair clipper, the hair clipper comprises a fixed tool bit, a movable tool bit, a driving part and a driving mechanism for driving the driving part to linearly move, an elastic joint is formed on the driving part, and the driving part is connected with the movable tool bit through the elastic joint. The movable tool bit is attached to the fixed tool bit through the elastic acting force of the elastic connector, and the problem that the tool bit part of an existing hair clipper is prone to damage is solved.

Description

Technical Field

[0001] This utility model relates to the field of hair clipper technology, and in particular to a clipper blade structure. Background Technology

[0002] Existing hair clippers, such as the earlier Chinese patent application CN119036520A entitled "A Blade Sliding Mechanism, Reciprocating Drive Mechanism and Hair Clipper Thereof," utilize a corresponding drive mechanism to drive a sliding member to reciprocate on a guide rail. This sliding member, connected to a moving blade head via a connecting shaft, then drives the moving blade head to reciprocate on one side of the fixed blade head, achieving the hair trimming function. To maintain a close fit between the moving and fixed blade heads, the prior art uses a torsion spring, with one torsion arm connected to the fixed blade holder and the other torsion arm rotatably mounted on the clipper housing. The elastic force of the torsion spring ensures the moving blade head remains in contact with the fixed blade head. For example, patent application 202322021280.1 entitled "A Blade Assembly for a Shaver" also employs this structure. However, this design has the following drawbacks:

[0003] When the moving blade reciprocates on one side of the fixed blade, its torsion spring swings with the point of reciprocation between itself and the housing as the swing point and the torsion arm of the torsion spring as the radius. This causes the following problems when using the hair clipper: 1. The contact part between the moving blade and the swing arm is easily worn and damaged due to long-term transmission; 2. Due to long-term swinging and twisting, the torsion arm of the torsion spring is prone to metal fatigue, which can cause the torsion spring to lose its elasticity or break, thus greatly affecting the service life of the hair clipper and the user experience. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a hair clipper blade structure that solves the problem that the blade part of existing hair clippers is easily damaged.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a hair clipper blade structure, including a hair clipper, the hair clipper including a fixed blade, a movable blade, a driving member and a driving mechanism that drives the driving member to move linearly, an elastic joint is formed on the driving member, the driving member is connected to the movable blade through the elastic joint, so that the movable blade is made to fit against the fixed blade through the elastic force of the elastic joint.

[0006] Furthermore, the driving component includes a main body connected to the driving mechanism, with a corresponding elastic joint disposed on the main body.

[0007] By adopting the above technical solution, the main body is designed to facilitate the connection between the drive component and the drive mechanism, and the flexible joint drives the moving cutter head to reciprocate linearly.

[0008] Furthermore, the flexible joint includes an elastic portion that allows the driven cutter head to elastically adhere to the cutter head and a rigid portion that is rigid in the reciprocating motion direction of the drive member.

[0009] By adopting the above technical solution, the rigid part is designed to prevent the elastic joint from swinging in the reciprocating motion direction of the drive component during the reciprocating linear motion of the drive component. This ensures that the drive component will only apply an elastic force toward the fixed cutter head to the moving cutter head, without generating displacement in other directions.

[0010] Furthermore, the width of the elastic joint along the reciprocating swing direction of the driving component is greater than the thickness of the elastic joint in the elastic movement direction.

[0011] By adopting the above technical solution, this size setting can effectively limit the elastic deformation direction of the elastic joint to the direction towards the fixed cutter head, avoiding the elastic joint from swinging in the reciprocating movement direction of the drive component, and preventing the moving cutter head from going beyond the edge of the fixed cutter head during reciprocating motion and causing injury, thus effectively improving the safety of product use.

[0012] Furthermore, the flexible joint has a columnar structure with an elliptical cross-section.

[0013] By adopting the above technical solution, the elliptical columnar structure makes the thickness of the elastic joint in the swing direction of the driving component greater than the thickness of the elastic joint in the elastic clamping direction. This ensures that while the elastic joint can stably apply an elastic clamping force to the moving cutter head to fit the fixed cutter head, it also avoids the occurrence of elastic displacement of the elastic joint in the reciprocating movement direction of the driving component, thus ensuring the stability of the driving component when driving the moving cutter head to reciprocate.

[0014] Furthermore, the moving cutter head includes a moving cutter holder and a moving cutter blade mounted on the moving cutter holder, and the moving cutter holder is connected to a flexible joint.

[0015] Furthermore, the connection end between the flexible joint and the moving tool holder is equipped with a mounting plate, which is integrally formed with the moving tool holder or can be detachably connected.

[0016] By adopting the above technical solution, the mounting plate can improve the installation contact surface between the elastic joint and the moving tool holder, thereby improving the stability of the connection between the two. The detachable design of the two facilitates the replacement of the moving tool holder and the moving blade as needed.

[0017] Furthermore, the drive mechanism includes guide rails arranged in parallel within the housing and a power component that drives the drive components to slide linearly along the guide rails.

[0018] Compared with the prior art, the advantages of this utility model are:

[0019] In this invention, an elastic joint formed on the drive component is elastically connected to the moving cutter head, thereby utilizing the elastic potential energy of the elastic joint itself to make the moving cutter head and the fixed cutter head fit together, eliminating the need for a torsion spring component. This has the following advantages:

[0020] 1. It effectively avoids the wear caused by contact between the torsion spring and the moving blade holder in existing technologies. It also avoids the possibility of metal fatigue or deformation of the torsion spring after long-term use, which could lead to product damage. In contrast, the elasticity of the elastic joint itself can maintain stable elastic performance for a longer period of time, thus extending the service life of the hair clipper.

[0021] 2. By directly utilizing the elastic properties of the flexible joint, the additional torsion spring component can be eliminated, simplifying the overall structure of the hair clipper. This not only reduces the number of parts but also lowers assembly complexity, which is beneficial for improving production efficiency and reducing costs.

[0022] 3. Removing the torsion spring helps reduce the overall weight, making the hair clipper lighter and easier to use, and more comfortable for users to use for extended periods.

[0023] 4. Without the extra space occupied by springs, the product design can be more compact, which helps to improve the product's portability and aesthetic appearance. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the hair clipper of this utility model.

[0025] Figure 2 This is a schematic diagram of the internal structure of the hair clipper of this utility model.

[0026] Figure 3 This utility model Figure 2 Frontal structural cross-section.

[0027] Figure 4 This is the cross-section of the elastic joint of this utility model.

[0028] Figure 5 This is a schematic diagram of the drive component structure of this utility model.

[0029] In the picture:

[0030] 100 housing, 110 fixed cutter head.

[0031] 200-degree moving cutter head, 210-degree moving cutter head, 220-degree moving tool holder.

[0032] 300 drive unit, 310 main body, 320 flexible joint, 330 mounting plate.

[0033] 400 motor, 410 eccentric wheel, 420 eccentric shaft, 430 connecting seat, 431 shaft hole, 440 connecting shaft, 450 guide rail. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] Reference Figure 1 The hair clipper includes a housing 100, a fixed blade head 110, a movable blade head 200, a drive member 300, and a drive mechanism that drives the drive member 300 to move linearly. The drive mechanism is located inside the housing 100. The lower end of the drive member 300 is connected to the drive mechanism, and under the drive of the drive mechanism, the movable blade head 200 moves back and forth linearly on one side of the fixed blade head 110 to trim the hair. The upper end of the drive member 300 has an elastic joint 320. The drive member 300 is connected to the movable blade head 200 through the elastic joint 320 so that the movable blade head 200 fits against the fixed blade head 110 through the elastic force of the elastic joint 320.

[0036] In this embodiment, by eliminating the torsion spring and utilizing only the elastic force of the elastic joint 320 itself to apply a force to the moving blade 200 to adhere to the fixed blade 110, there are several advantages. Firstly, it effectively avoids the wear caused by contact between the torsion spring and the moving blade holder 220, as is common in the prior art. Secondly, it prevents metal fatigue or deformation of the torsion spring after prolonged use, which could lead to product damage. In contrast, utilizing the elasticity of the elastic joint 320 itself allows for stable elastic performance over a longer period, extending the lifespan of the hair clipper. Thirdly, by directly utilizing the elastic characteristics of the elastic joint 320, the need for an additional torsion spring component is eliminated, simplifying the overall structure of the hair clipper. This not only reduces the number of parts but also lowers assembly complexity, improving production efficiency and reducing costs. Fourthly, eliminating the torsion spring helps reduce overall weight, making the hair clipper lighter and easier to use, resulting in greater comfort for users during extended use. Finally, the absence of an additional spring allows for a more compact product design, enhancing portability and aesthetics.

[0037] In this embodiment, the driving component 300 includes a main body 310 connected to the driving mechanism, and an elastic joint 320 is correspondingly disposed on the main body 310.

[0038] In this embodiment, the elastic joint 320 includes an elastic portion that allows the movable blade 200 to elastically adhere to the fixed blade 110 and a rigid portion that is rigid in the reciprocating motion direction of the drive member 300. The rigid portion ensures that the drive member 300 does not undergo unnecessary deformation when it reciprocates linearly in the horizontal direction, thereby ensuring that the movement trajectory of the movable blade 200 is accurate. The elastic portion allows the movable blade 200 to adapt to changes in the surface of the fixed blade 110 in a direction perpendicular to its movement direction, ensuring that the two fit tightly together. This helps to improve the uniform cutting effect when the movable blade 200 and the fixed blade 110 of the hair clipper move relative to each other.

[0039] Reference Figure 5 As one embodiment of the elastic joint 320, the elastic joint 320 extends from the connection end with the moving cutter head 200 toward the main body 310, and its diameter gradually increases. In this way, by utilizing the larger diameter of the lower section of the elastic joint 320, the rigidity of the elastic joint 320 in the direction of movement of the moving cutter head 200 can be improved, while the elastic clamping force on the moving cutter head 200 is achieved through the relatively thin upper part.

[0040] Reference Figure 4 As another embodiment of the elastic joint 320, the width of the elastic joint 320 along the reciprocating swing direction of the driving member 300 is greater than the thickness of the elastic joint 320 in the elastic movement direction. This size setting can effectively limit the elastic deformation direction of the elastic joint 320 to the direction towards the fixed cutter head 110, and prevent the elastic joint 320 from swinging in the reciprocating movement direction of the driving member 300, so as to prevent the moving cutter head 200 from going beyond the edge of the fixed cutter head 110 during the reciprocating action and causing injury. This effectively improves the safety of the product.

[0041] In this embodiment, the elastic joint 320 can be made of any of the following materials: plastic, metal, or rubber, as long as it can apply an elastic force to the moving cutter head 200 toward the fixed cutter head 110 and can prevent the drive member 300 from swinging in the swing direction when it reciprocates. It can also be made of other elastic materials.

[0042] In this embodiment, refer to Figure 2 and 3 The moving cutter head 200 includes a moving cutter holder 220 and a moving blade 210 mounted on the moving cutter holder 220. The moving cutter holder 220 is connected to the elastic joint 320. In order to further improve the connection stability between the elastic joint 320 and the moving cutter holder 220, the end of the elastic joint 320 is provided with a mounting plate, which is arranged along the reciprocating movement direction of the moving blade 210. In this way, the connection stability between the elastic joint 320 and the moving cutter holder 220 can be improved by adding a mounting plate.

[0043] In this embodiment, the drive mechanism is described only briefly here because it references an online patent application. The drive mechanism includes two guide rails 450 disposed within the housing 100. The main body 310 is slidably disposed on the guide rails 450. The guide rails 450 are driven by a power unit disposed within the housing 100 to move linearly back and forth along the direction of the guide rails 450. The power unit includes a motor 400, an eccentric wheel 410, a connecting seat 430, and a connecting shaft 440. The output end of the motor 400 is connected to the eccentric wheel 410, and the upper end of the eccentric wheel 410... An eccentric shaft 420 is provided, and two shaft holes 431 are respectively provided at both ends of the connecting seat 430. One shaft hole 431 is connected to the eccentric shaft 420, and the other shaft hole is rotatably connected to the lower end of the connecting shaft 440. The upper end of the connecting shaft 440 is rotatably connected to the main body 310. Thus, the main body 310 can be driven to reciprocate along the guide rail 450 by the rotation of the motor 400, and through the eccentric shaft 550, the connecting seat 430 and the connecting shaft 440, so as to realize the reciprocating action of the moving tool holder 410 on one side of the fixed tool head 110.

[0044] Of course, the drive mechanism can also be other structures. For example, the guide rail 450 is provided with a reciprocating thread, and its two ends are rotatably connected inside the housing 100. The guide rail 450 is driven to rotate by the motor 400, and the main body 310 is provided with a reciprocating thread hole that forms a sliding fit with the guide rail 450. In this way, the linear movement of the drive component 300 can also be achieved by using a reciprocating thread fit. Of course, the drive mechanism can also be implemented in other ways, which will not be described in detail here.

[0045] Although the preferred embodiments of the present invention have been described in detail above, it should be clearly understood that various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A blade head structure of a hair clipper, comprising a hair clipper including a fixed blade head, a movable blade head, a driving member, and a driving mechanism that drives the driving member in linear motion, characterized by, The driving member is provided with an elastic joint, and the driving member is connected with the moving cutter head through the elastic joint to make the moving cutter head adhere to the fixed cutter head by the elastic force of the elastic joint.

2. A blade head structure for a hair clipper according to claim 1, wherein The driving member comprises a main body connected with the driving mechanism, and the elastic joint is correspondingly arranged on the main body.

3. A blade head structure for a hair clipper according to claim 1, wherein The elastic joint comprises an elastic part for making the moving cutter head elastically adhere to the fixed cutter head and a rigid part having rigidity in the reciprocating direction of the driving member.

4. A blade head structure for a hair clipper according to claim 1, wherein The width of the elastic joint in the reciprocating direction of the driving member is greater than the thickness of the elastic joint in the elastic movement direction.

5. A blade head structure for a hair clipper according to claim 3, wherein The elastic joint has a columnar structure, and the cross section of the elastic joint is elliptical.

6. A blade head structure for a hair clipper according to claim 1, wherein The moving cutter head comprises a moving cutter holder and a moving cutter blade arranged on the moving cutter holder, and the moving cutter holder is connected with the elastic joint.

7. A blade head structure for a hair clipper according to claim 6, wherein The connecting end of the elastic joint with the moving cutter holder is provided with a mounting plate, and the mounting plate is integrally formed with or detachably connected with the moving cutter holder.

8. The blade head structure of a hair clipper according to claim 1, wherein The driving mechanism comprises guide rails arranged in parallel in a casing and a power part for driving the driving member to linearly slide along the guide rails.

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