Tool bit connecting structure for hair trimmer

Abstract

According to the technical scheme, the tool bit connecting structure for the hair trimmer is characterized by comprising a trimmer body and a tool bit assembly, the tool bit assembly comprises a tool bit support and a tool bit structure, and the lower portion of the tool bit support and the upper portion of the trimmer body are provided with a tool bit connecting inclined face and a body connecting inclined face respectively. A first connecting protrusion is arranged on the lower portion of the tool bit connecting inclined face, a first connecting clamping groove is formed in the first connecting protrusion, second connecting protrusions are arranged on the two sides of the tool bit connecting inclined face, second connecting clamping grooves are formed in the second connecting protrusions, and a main body clamping part is arranged on the lower portion of the main body connecting inclined face. A main body connecting plate is fixedly connected to the interior of the trimmer main body, elastic connecting arms are arranged on the two sides of the main body connecting plate, and elastic connecting parts are formed on the elastic connecting arms in a bending mode. The trimmer has the advantages that the trimmer is simple in structure and convenient to use, and the tool bit assembly can be quickly disassembled and assembled on the trimmer body.

Description

Technical Field

[0001] This utility model relates to the field of hair trimming technology, and specifically to a blade connection structure for a hair trimmer. Background Technology

[0002] There are various types of hair trimmers in daily life, such as razors, hair clippers, and trimmers. Hair trimmers have one or more blades, and these blades can have the same or different structures. Users can quickly switch between different functions by disassembling and replacing the blades. Typically, a hair trimmer blade head includes a fixed blade, a moving blade, a fixed blade holder, a moving blade holder, and a flexible support. The fixed blade is fixedly mounted on the fixed blade holder, and the moving blade is fixedly mounted on the moving blade holder. A drive mechanism drives the moving blade to reciprocate in a preset direction to cooperate with the fixed blade and cut the beard or other hair.

[0003] However, in order to make the machine body and the cutter head firmly connected, the existing technology makes the connection mechanism between the machine body and the cutter head relatively complicated, which makes it difficult to disassemble and assemble the cutter head. For example, users need to use a lot of force to forcibly remove the cutter head from the machine body, which is time-consuming and laborious. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a blade head connection structure for a hair trimmer, which is simple in structure, easy to use, and allows for quick assembly and disassembly of the blade head assembly on the trimmer body.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a blade head connection structure for a hair trimmer, comprising a trimmer body and a blade head assembly detachably connected to the trimmer body. The blade head assembly includes a blade head bracket and a blade head structure located on the upper part of the blade head bracket. The lower part of the blade head bracket and the upper part of the trimmer body are respectively provided with a matching blade head connecting inclined surface and a body connecting inclined surface. A first connecting protrusion is provided on the lower part of the blade head connecting inclined surface, and a first connecting groove is formed on the first connecting protrusion. The cross-section of the first connecting groove... The device has a U-shaped structure. Both sides of the blade head connecting bevel are provided with a second connecting protrusion. The second connecting protrusion has a second connecting groove. The cross-section of the second connecting groove is a trapezoidal structure with a smaller inner diameter and a larger outer diameter. The lower part of the main body connecting bevel is provided with a main body engaging part that matches the first connecting groove. The trimmer body is fixedly connected to a main body connecting plate that matches the second connecting protrusion. Both sides of the main body connecting plate are provided with an integral elastic connecting arm. The elastic connecting arm is formed by bending to match the second connecting groove.

[0006] By adopting the above technical solution, during assembly, the first connecting slot engages with the main body connecting part, and at the same time, under the action of the elastic guide slope, the elastic connecting part engages with the second connecting slot, thus completing the assembly; during disassembly, the blade assembly is pushed to move obliquely upward along the main body connecting slope, causing the first connecting slot and the main body connecting part to disengage from each other, while the second connecting protrusion drives the elastic connecting arm to flip, causing the second connecting slot and the elastic connecting part to separate, thus completing the disassembly, thereby achieving the effect of enabling the blade assembly to be quickly assembled and disassembled on the trimmer body.

[0007] The present invention is further configured such that: a cutter head connecting groove is provided on the inner side of the main body connecting inclined surface, and the lower parts of the first connecting protrusion and the second connecting protrusion extend into the cutter head connecting groove; the first connecting protrusion, the second connecting protrusion and the cutter head connecting inclined surface are all integrally formed.

[0008] By adopting the above technical solution, the first connecting protrusion and the second connecting protrusion extend into the blade connecting groove to ensure the aesthetic appearance of the hair trimmer body, and the integrated structure ensures the structural strength of the first connecting protrusion and the second connecting protrusion.

[0009] The present invention is further configured such that: the elastic connecting part is provided with an elastic guide slope adapted to the second connecting protrusion, and the lower part of the second connecting protrusion is provided with a first guide chamfer and a second guide chamfer connected to each other.

[0010] By adopting the above technical solution, the elastic guide bevel, through the cooperation of the first guide chamfer and the second guide chamfer, facilitates the quick engagement of the elastic connecting part with the second connecting slot, thereby improving assembly efficiency.

[0011] The present invention is further configured such that: at least one pair of limiting protrusions adapted to the second connecting protrusion are provided on both sides of the blade connecting inclined surface, and the limiting protrusions extend into the blade connecting groove.

[0012] By adopting the above technical solution, the limiting protrusion and the second connecting protrusion cooperate with each other to prevent the blade assembly from deflecting left or right relative to the trimmer body during use, thereby improving the stability of the connection structure between the blade assembly and the trimmer body.

[0013] The present invention is further configured such that: a relief groove and a guide groove connected to the relief groove are provided at one end of the second connecting protrusion facing outward; guide protrusions adapted to the relief groove are provided on both sides of the main connecting inclined surface; and the width of the relief groove is not less than the sum of the guide protrusions and the first connecting groove.

[0014] By adopting the above technical solution, the width of the relief groove is not less than the sum of the guide protrusion and the first connecting groove, ensuring that the first connecting groove and the main body engaging and disengaging with each other. When the blade assembly is assembled, the guide protrusion engages with the relief groove, which can prevent the blade assembly from deflecting left or right relative to the trimmer body during use, improve the stability of the connection structure between the blade assembly and the trimmer body, and facilitate the use of the hair trimmer.

[0015] The present invention is further configured such that: the upper end of the blade connecting inclined surface is provided with a blade limiting surface adapted to the main body connecting inclined surface, and the upper end of the main body connecting inclined surface is provided with a main body limiting surface adapted to the blade limiting surface.

[0016] By adopting the above technical solution, the blade limiting surface and the main body limiting surface facilitate the assembly of the blade assembly and the trimmer body, ensuring the firmness of the connection structure.

[0017] The present invention is further configured such that: a first magnetic groove and a second magnetic groove are respectively provided on the cutting head limiting surface and the main body limiting surface, and magnets and magnetic conductive metal sheets that can attract each other are respectively embedded in the first magnetic groove and the second magnetic groove.

[0018] By adopting the above technical solution, the magnet and the magnetically conductive metal sheet attract each other, thereby increasing the firmness between the blade assembly and the trimmer body after assembly.

[0019] The present invention is further configured such that the blade head structure can be configured as any one of a hair clipper head, a nose hair trimmer head, a hair trimmer head, a shaving head, or a body hair trimmer head.

[0020] By adopting the above technical solutions and various blade structure designs, the functionality of hair trimmers can be enhanced.

[0021] In summary, this utility model has the following beneficial effects:

[0022] 1. During assembly, the guide protrusion engages with the relief groove, and the first connecting groove engages with the main body connecting part. At the same time, under the action of the elastic guide slope, the elastic connecting part engages with the second connecting groove, thus completing the assembly. During disassembly, the blade assembly is pushed to move obliquely upward along the main body connecting slope, causing the first connecting groove and the main body connecting part to disengage. At the same time, the second connecting protrusion drives the elastic connecting arm to flip, causing the second connecting groove and the elastic connecting part to separate, thus completing the disassembly. This achieves the effect of quickly assembling and disassembling the blade assembly on the trimmer body.

[0023] 2. The elastic guide bevel, through the cooperation of the first guide chamfer and the second guide chamfer, facilitates the quick engagement of the elastic connecting part with the second connecting slot, improving assembly efficiency; through the cooperation of the limiting protrusion and the second connecting protrusion, it can prevent the blade assembly from deflecting left or right relative to the trimmer body during use, improving the stability of the connection structure between the blade assembly and the trimmer body. Attached Figure Description

[0024] Figure 1 This is an exploded schematic diagram of Example 1.

[0025] Figure 2 for Figure 1 A schematic diagram of the middle cutter head assembly.

[0026] Figure 3 for Figure 1 A schematic diagram of the main body of the trimmer.

[0027] Figure 4 for Figure 3 A magnified view of a portion of point I in the middle.

[0028] Figure 5 This is a schematic diagram of the connection between the blade assembly and the trimmer body in Embodiment 1.

[0029] Figure 6 The two figures are schematic diagrams of the connection between the blade assembly and the trimmer body in Embodiment 1.

[0030] Figure 7 This is a schematic diagram of multiple blade assembly and trimmer body in Embodiment 1.

[0031] Figure 8 This is an explosion diagram of Example 2.

[0032] Reference numerals: 1. Trimmer body; 11. Body connecting bevel; 111. Body locking part; 12. Blade head connecting groove; 13. Body connecting plate; 131. Elastic connecting arm; 1311. Elastic connecting part; 1312. Elastic guide bevel; 14. Body limiting surface; 141. Magnetic conductive metal sheet; 15. Guide protrusion; 2. Blade head assembly; 21. Blade head bracket; 211. Blade head connecting bevel; 212. First connecting protrusion; 2121. First connecting groove; 213. Second connecting protrusion; 2131. Second connecting groove; 2132. First guide chamfer; 2133. Second guide chamfer; 214. Blade head limiting surface; 2141. Magnet; 215. Limiting protrusion; 216. Relief groove; 217. Guide groove; 22. Blade head structure. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Example 1: This example discloses a blade connection structure for a hair trimmer, such as... Figures 1 to 7 As shown, it includes a trimmer body 1 and a blade assembly 2 detachably connected to the trimmer body 1. The blade assembly 2 includes a blade support 21 and a blade structure 22 located on the upper part of the blade support 21.

[0035] The lower part of the blade head bracket 21 is provided with a blade head connecting slope 211 adapted to the trimmer body 1. The lower part of the blade head connecting slope 211 is provided with a first connecting protrusion 212 integral with it. The first connecting protrusion 212 is provided with a first connecting groove 2121. The cross-section of the first connecting groove 2121 is U-shaped. Both sides of the blade head connecting slope 211 are provided with a second connecting protrusion 213 integral with it. The second connecting protrusion 213 is provided with a second connecting groove 2131. The cross-section of the second connecting groove 2131 is a trapezoidal structure with a smaller inner diameter and a larger outer diameter. The first connecting protrusion 212 and the second connecting protrusion 213 extend into the trimmer body 1. The upper end of the blade head connecting slope 211 is provided with a blade head limiting surface 214 adapted to it.

[0036] The trimmer body 1 is provided with a main body connecting slope 11 adapted to the blade connecting slope 211. A blade connecting groove 12 is provided on the inner side of the main body connecting slope 11. A first connecting protrusion 212 and a second connecting protrusion 213 extend into the blade connecting groove 12. A main body engaging part 111 adapted to the first connecting groove 2121 is provided at the lower part of the main body connecting slope 11. A main body connecting plate 13 adapted to the second connecting protrusion 213 is fixedly connected inside the trimmer body 1. The main body connecting plate 13 has connecting parts on both sides... Its integrated elastic connecting arm 131 has an elastic connecting part 1311 that is adapted to the second connecting slot 2131 by bending. When the blade assembly 2 and the trimmer body 1 are assembled, the main body engaging part 111 engages with the first connecting slot 2121, and the second connecting slot 2131 engages with the elastic connecting part 1311. They are separated when disassembled. The upper end of the main body connecting inclined surface 11 is provided with a main body limiting surface 14 that is adapted to the blade limiting surface 214.

[0037] The elastic connecting part 1311 is provided with an elastic guide slope 1312 that is adapted to the second connecting protrusion 213. The lower part of the second connecting protrusion 213 is provided with a first guide chamfer 2132 and a second guide chamfer 2133 connected to each other. The elastic guide slope 1312 cooperates with the first guide chamfer 2132 and the second guide chamfer 2133 to facilitate the quick engagement of the elastic connecting part 1311 with the second connecting slot 2131.

[0038] At least one pair of limiting protrusions 215 adapted to the second connecting protrusion 213 are also provided on both sides of the blade head connecting slope 211. The limiting protrusions 215 extend to the blade head connecting groove 12. The limiting protrusions 215 and the second connecting protrusions 213 cooperate with each other to prevent the blade head assembly 2 from deflecting left and right relative to the trimmer body 1 during use, thereby improving the stability of the connection structure between the blade head assembly 2 and the trimmer body 1 and facilitating the use of the hair trimmer.

[0039] The second connecting protrusion 213 has a relief groove 216 and a guide groove 217 connected to the relief groove 216 at one of its outer ends. The two sides of the main body connecting inclined surface 11 are provided with guide protrusions 15 that are adapted to the relief groove 216. The width of the relief groove 216 is not less than the sum of the guide protrusion 15 and the first connecting slot 2121, so that the first connecting slot 2121 can engage and disengage with the main body engaging part 111. When the blade assembly 2 is assembled, the guide protrusion 15 engages with the relief groove 216, which can prevent the blade assembly 2 from deflecting left and right relative to the trimmer body 1 during use, improve the stability of the connection structure between the blade assembly 2 and the trimmer body 1, and facilitate the use of the hair trimmer.

[0040] The blade assembly 2 can be configured as any one of the following: hair clipper head, nose hair trimmer head, hair trimmer head, shaving head, or body hair trimmer head.

[0041] The assembly and disassembly process is as follows: During assembly, the first connecting protrusion 212, the second connecting protrusion 213, and the limiting protrusion 215 on the cutter head assembly 2 are placed into the cutter head connecting groove 12. The guide protrusion 15 and the relief groove 216 engage with each other, and the cutter head connecting inclined surface 211 and the main body connecting inclined surface 11 abut against each other. Then, the cutter head assembly 2 is moved diagonally downward along the main body connecting inclined surface 11, so that the first connecting groove 2121 engages with the main body connecting part. At the same time, under the action of the elastic guide inclined surface 1312, the elastic connecting part 1311 engages with the second connecting groove 2131. The blade assembly 2 and the trimmer body 1 are assembled by interlocking and the blade limiting surface 214 and the main body limiting surface 14 abutting against each other. When disassembling, the blade assembly 2 is pushed to move obliquely upward along the main body connecting slope 11, so that the first connecting groove 2121 and the main body connecting part are separated from each other. At the same time, the second connecting protrusion 213 drives the elastic connecting arm 131 to flip to the obliquely upward side of the main body connecting slope 11, so that the second connecting groove 2131 and the elastic connecting part 1311 are separated. At this time, the blade assembly 2 can be removed from the trimmer body 1 to complete the disassembly.

[0042] Example 2, this example is based on Example 1, such as... Figure 8As shown, a first magnetic groove and a second magnetic groove are respectively provided on the blade limiting surface 214 and the main body limiting surface 14. A magnet 2141 and a magnetic conductive metal sheet 141 are respectively embedded in the first magnetic groove and the second magnetic groove. The magnetic conductive metal sheet 141 can be made of iron. The magnet 2141 and the magnetic conductive metal sheet 141 attract each other, which increases the firmness of the connection between the blade assembly 2 and the trimmer body 1 when they are assembled, making it convenient for users to use and not affecting the disassembly of the two.

[0043] In summary, this utility model has the following beneficial effects:

[0044] 1. During assembly, the guide protrusion 15 engages with the relief groove 216, and the first connecting groove 2121 engages with the main body connecting part. At the same time, under the action of the elastic guide inclined surface 1312, the elastic connecting part 1311 engages with the second connecting groove 2131, thus completing the assembly. During disassembly, the blade assembly 2 is pushed to move obliquely upward along the main body connecting inclined surface 11, so that the first connecting groove 2121 and the main body connecting part disengage from each other. At the same time, the second connecting protrusion 213 drives the elastic connecting arm 131 to rotate, so that the second connecting groove 2131 and the elastic connecting part 1311 separate, thus completing the disassembly. This achieves the effect of enabling the blade assembly 2 to be quickly assembled and disassembled on the trimmer body 1.

[0045] 2. The elastic guide slope 1312, through the cooperation of the first guide chamfer 2132 and the second guide chamfer 2133, facilitates the quick engagement of the elastic connecting part 1311 and the second connecting groove 2131, thereby improving assembly efficiency; through the cooperation of the limiting protrusion 215 and the second connecting protrusion 213, it can prevent the blade assembly 2 from deflecting left or right relative to the trimmer body 1 during use, thereby improving the stability of the connection structure between the blade assembly 2 and the trimmer body 1.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cutter head connection structure for a hair trimmer, comprising a trimmer body (1) and a cutter head assembly (2) detachably connected to the trimmer body (1), characterized in that: The cutter head assembly (2) comprises a cutter head support (21) and a cutter head structure (22) at the upper part of the cutter head support (21), the lower part of the cutter head support (21) and the upper part of the trimmer main body (1) are respectively provided with a matched cutter head connecting slope (211) and a main body connecting slope (11), the lower part of the cutter head connecting slope (211) is provided with a first connecting protrusion (212), a first connecting clamping groove (2121) is formed in the first connecting protrusion (212), the cross section of the first connecting clamping groove (2121) is in the shape of a n, the two sides of the cutter head connecting slope (211) are provided with a second connecting protrusion (213), a second connecting clamping groove (2131) is formed in the second connecting protrusion (213), the cross section of the second connecting clamping groove (2131) is in the shape of a trapezoid with the inside small and the outside large, the lower part of the main body connecting slope (11) is provided with a main body clamping part (111) matched with the first connecting clamping groove (2121), the main body connecting slope (11) is internally and fixedly connected with a main body connecting plate (13) matched with the second connecting protrusion (213), the two sides of the main body connecting plate (13) are provided with elastic connecting arms (131) integrated therewith, the elastic connecting arms (131) are formed with elastic connecting parts (1311) matched with the second connecting clamping groove (2131) through bending.

2. A cartridge attachment structure for a hair trimmer according to claim 1, characterized in that: The inner side of the main body connecting slope (11) is provided with a cutter head connecting groove (12), the lower parts of the first connecting protrusion (212) and the second connecting protrusion (213) extend into the cutter head connecting groove (12), the first connecting protrusion (212), the second connecting protrusion (213) and the cutter head connecting slope (211) are provided in an integrated structure.

3. A cartridge attachment structure for a hair trimmer according to claim 2, characterized in that: The elastic connecting part (1311) is provided with an elastic guide slope (1312) matched with the second connecting protrusion (213), the lower part of the second connecting protrusion (213) is provided with a first guide chamfer (2132) and a second guide chamfer (2133) connected with each other.

4. A cartridge attachment structure for a hair trimmer according to claim 3, characterized in that: The two sides of the cutter head connecting slope (211) are further provided with at least one pair of limiting protrusions (215) matched with the second connecting protrusion (213), the limiting protrusions (215) extend into the cutter head connecting groove (12).

5. A cartridge attachment structure for a hair trimmer according to claim 4, characterized in that: The outer side end of the second connecting protrusion (213) is provided with a retreat groove (216) and a guide groove (217) connected with the retreat groove (216), the two sides of the main body connecting slope (11) are provided with guide protrusions (15) matched with the retreat groove (216), the width of the retreat groove (216) is not less than the sum of the guide protrusions (15) and the first connecting clamping groove (2121).

6. A cartridge connection structure for a hair trimmer according to claim 1, characterized in that: The oblique upper end of the cutter head connecting slope (211) is provided with a cutter head limiting surface (214) matched with the main body connecting slope (11), the oblique upper end of the main body connecting slope (11) is provided with a main body limiting surface (14) matched with the cutter head limiting surface (214).

7. A head connection structure for a hair trimmer according to claim 6, characterized in that: The first magnetic recess and the second magnetic recess are respectively arranged on the head limiting surface (214) and the body limiting surface (14), and the magnet (2141) and the magnetic metal sheet (141) which can be attracted to each other are respectively embedded in the first magnetic recess and the second magnetic recess.

8. A cartridge attachment structure for a hair trimmer according to any one of claims 1 to 7, characterized in that: The head structure (22) can be any one of a hair cutting head, a nose hair trimming head, a hair grooming head, a hair shaving head, and a body hair trimming head.

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