A cutter head structure and assembly method of a fixed cutter and a hair trimmer

Abstract

This invention provides a simplified blade head structure, assembly method, and hair trimmer, including a fixed blade and a fixed blade holder. The fixed blade holder has an elastic buckle, the fixed blade has a snap-fit ​​hole that engages with the elastic buckle, and the fixed blade holder has a limiting part for restricting the vertical movement of the fixed blade. The assembly method of this invention involves pushing the fixed blade to engage with the elastic buckle on the fixed blade holder. This simple assembly method, requiring only a push, completes the assembly of the fixed blade and fixed blade holder. The limiting part on the fixed blade holder prevents the fixed blade from moving vertically, ensuring the stability of the assembled structure. No assembly tools are required, resulting in high production efficiency, increased processing yield, and reduced difficulty in subsequent replacement and repair of parts.

Description

Technical Field

[0001] This invention relates to the field of hair trimmer technology, and more specifically, to a blade head structure, assembly method, and hair trimmer with a simple fixed blade assembly. Background Technology

[0002] A hair trimmer is a personal care tool used to trim and shave hair, beard, chest hair, and other parts of the body. Its head consists of a fixed blade and a moving blade that reciprocate each other, with the fixed blade typically fixed to a blade holder. Currently, the assembly of the fixed blade and blade holder usually involves riveting or screwing, which is a complex and inefficient process, increasing the difficulty and time cost of maintenance and parts replacement. Summary of the Invention

[0003] To address at least one of the aforementioned problems, the present invention first provides a tool head structure for easy assembly of a fixed tool, comprising a fixed tool and a fixed tool holder, wherein the fixed tool holder is provided with an elastic buckle, the fixed tool is provided with a snap-fit ​​hole that engages with the elastic buckle, and the fixed tool holder is provided with a limiting part for restricting the up-and-down movement of the fixed tool.

[0004] Optionally, the limiting part includes a first limiting block, a second limiting block, and a third limiting block. The first limiting block and the second limiting block are located on the left and right sides of the fixed blade, respectively, and the third limiting block is located on the rear side of the fixed blade. The lower surfaces of the first limiting block, the second limiting block, and the third limiting block all abut against the upper surface of the fixed blade.

[0005] Optionally, it also includes a limiting plate connected to the fixed tool holder, and the elastic buckle is provided on the limiting plate; the limiting plate is provided with a positioning hole, and the fixed tool holder is provided with a positioning post that cooperates with the positioning hole; the limiting plate is also provided with a downwardly inclined elastic top piece, and the elastic top piece abuts against the fixed tool holder; the number of elastic buckles is two, and the elastic top piece is located between the two elastic buckles.

[0006] Optionally, it also includes a movable blade and a movable blade holder connected to each other. The fixed blade is provided with a sliding groove, and the movable blade holder is provided with a movable column that slides left and right with the sliding groove, so as to realize that the movable blade reciprocates in the left and right direction relative to the fixed blade.

[0007] Optionally, the moving blade is provided with an oil storage tank, and an oil storage sponge is placed in the oil storage tank. The oil storage sponge is located between the moving blade and the moving blade holder.

[0008] Optionally, the moving blade is further provided with multiple oil guiding channels communicating with the oil reservoir, and there is a friction surface between the fixed blade and the moving blade, with the end of the oil guiding channel communicating with the friction surface.

[0009] Optionally, the moving tool holder is provided with an oil injection hole, which is located above the oil storage tank.

[0010] Compared to existing technologies, the simplified assembly of the fixed blade in this invention involves assembling the fixed blade and the fixed blade holder by pushing the fixed blade to engage with the elastic buckle on the fixed blade holder. This assembly method is simple; a single push completes the assembly between the fixed blade and the fixed blade holder. The limiting part on the fixed blade holder prevents the fixed blade from moving vertically, ensuring the stability of the assembled structure. No assembly tools are required, resulting in high production efficiency, increased processing pass rate, and reduced difficulty in subsequent replacement and maintenance of parts.

[0011] In addition, the present invention provides a hair trimmer, including a blade head structure with a fixed blade that is easily assembled as described above.

[0012] Compared to existing technologies, the hair trimmer described in this invention has the same advantages as the blade head structure of the aforementioned fixed blade simple assembly, which will not be repeated here.

[0013] In addition, the present invention provides an assembly method for assembling the blade head structure of the simple assembly of the fixed blade as described above, including the steps of: pushing the fixed blade horizontally backward into the fixed blade holder until the snap hole on the fixed blade and the elastic buckle on the fixed blade holder cooperate with each other, at which time the limiting part on the fixed blade holder can restrict the fixed blade from moving in the vertical direction.

[0014] Optionally, the fixed tool holder is connected to a limiting plate, the elastic buckle is disposed on the limiting plate, the limiting plate is provided with a positioning hole, the fixed tool holder is provided with a positioning post, and the limiting part includes a first limiting block, a second limiting block, and a third limiting block; the tool head structure assembly method includes the following steps: aligning and engaging the positioning post with the positioning hole to install the limiting plate on the fixed tool holder; pushing the fixed tool horizontally backward into the fixed tool holder until the snap-fit ​​hole on the fixed tool engages with the elastic buckle, at which point the lower surfaces of the first limiting block, the second limiting block, and the third limiting block all abut against the upper surface of the fixed tool to restrict the fixed tool from moving in the vertical direction.

[0015] Optionally, the process includes the following steps: mounting a movable blade on the fixed blade, placing an oil-retaining sponge into the oil reservoir on the movable blade; mounting a movable blade holder on the movable blade, and having the movable column of the movable blade holder pass through the movable blade and engage with the sliding groove of the fixed blade, so that the movable blade can reciprocate relative to the fixed blade in the left-right direction; injecting lubricating oil into the oil injection hole of the movable blade holder, so that the lubricating oil penetrates into the oil-retaining sponge; vibration will occur when the machine is started, and the movable blade and the fixed blade together squeeze the oil-retaining sponge to expel oil, so that the squeezed-out lubricating oil can flow along the oil guide channel on the movable blade to the friction surface between the fixed blade and the movable blade.

[0016] Compared to existing technologies, the assembly method of the fixed-blade simplified assembly cutter head structure described in this invention has the same advantages as the aforementioned fixed-blade simplified assembly cutter head structure compared to existing technologies, and will not be repeated here. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the cutter head structure for simplified assembly of the fixed cutter according to an embodiment of the present invention;

[0018] Figure 2 A cross-sectional view of the cutter head structure for simplified assembly of a fixed cutter according to an embodiment of the present invention. Figure 1 ;

[0019] Figure 3 A cross-sectional view of the cutter head structure for simplified assembly of a fixed cutter according to an embodiment of the present invention. Figure 2 ;

[0020] Figure 4 This is an exploded view of the fixed blade, fixed blade holder, and limiting plate according to an embodiment of the present invention;

[0021] Figure 5 An exploded view of the moving blade, moving blade holder, and oil-retaining sponge according to an embodiment of the present invention;

[0022] Figure 6 This is a partial structural diagram of the cutter head structure according to an embodiment of the present invention;

[0023] Figure 7 This is a structural diagram of the assembly of the limiting plate and the fixed tool holder according to another embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Fixed blade; 11. Snap-fit ​​hole; 12. Sliding groove; 2. Fixed blade holder; 21. Limiting part; 211. First limiting block; 212. Second limiting block; 213. Third limiting block; 22. Positioning post; 3. Moving blade; 31. Oil reservoir; 32. Oil guide channel; 4. Moving blade holder; 41. Movable post; 42. Oil injection hole; 5. Elastic buckle; 6. Limiting plate; 61. Positioning hole; 62. Elastic top piece; 7. Oil reservoir sponge. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] In the description of this invention, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. The accompanying drawings of embodiments of the present invention provide a coordinate system XYZ, where the positive direction of the X-axis represents the left, the negative direction of the X-axis represents the right, the positive direction of the Y-axis represents the front, the negative direction of the Y-axis represents the rear, the positive direction of the Z-axis represents the top, and the negative direction of the Z-axis represents the bottom.

[0029] This invention provides a simplified tool head structure for fixed tool assembly, combined with... Figures 1 to 4 As shown, it includes a fixed blade 1 and a fixed blade holder 2. The fixed blade holder 2 is provided with an elastic buckle 5. The fixed blade 1 is provided with a snap-fit ​​hole 11 that cooperates with the elastic buckle 5. The fixed blade holder 2 is provided with a limiting part 21 for restricting the up and down movement of the fixed blade 1.

[0030] The elastic buckle 5 can be integrated with the fixed tool holder 2 or separate from it. The opening of the elastic buckle 5 faces rearward. During assembly, the fixed tool 1 moves rearward relative to the fixed tool holder 2 until the elastic buckle 5 engages with the locking hole 11, preventing the fixed tool 1 from moving forward. It is also fixed in the vertical direction by the limiting part 21 of the fixed tool holder 2, preventing the fixed tool 1 from moving vertically, thus completing the assembly of the fixed tool 1 and the fixed tool holder 2. The elastic buckle 5 has a certain degree of elasticity. When the elastic buckle 5 and the fixed tool holder 2 are separate,... The elastic buckle 5 is preferably made of metal. When the elastic buckle 5 and the fixed tool holder 2 are integrated, the elastic buckle 5 and the fixed tool holder 2 are preferably made of plastic. When the fixed tool 1 moves backward relative to the fixed tool holder 2, the bottom surface of the fixed tool 1 can press the elastic buckle 5 downward until the elastic buckle 5 corresponds to the position of the snap-fit ​​hole 11. At this time, the fixed tool 1 releases the pressure on the elastic buckle 5, and the elastic buckle 5 automatically resets and snaps into the snap-fit ​​hole 11, thereby fixing the fixed tool 1 and the fixed tool holder 2 to each other. The limiting part 21 is preferably integrally formed with the fixed tool holder 2, and the structure is stable and firm.

[0031] In this embodiment, the fixed-blade assembly structure uses a simple method to assemble the fixed blade 1 and the fixed blade holder 2. The assembly method involves pushing the fixed blade 1 to engage with the elastic buckle 5 on the fixed blade holder 2. The assembly method is simple; a single push completes the assembly between the fixed blade 1 and the fixed blade holder 2. The limiting part 21 on the fixed blade holder 2 prevents the fixed blade 1 from moving in the vertical direction, ensuring the stability of the assembly structure. No assembly tools are required, resulting in high production efficiency, increased processing qualification rate, and reduced difficulty in subsequent replacement and maintenance of parts.

[0032] Optionally, the fixed tool holder 2 and the elastic buckle 5 are integrally formed. Both the fixed tool holder 2 and the elastic buckle 5 are made of plastic. The elastic buckle 5 is thinner than the fixed tool holder 2, has good elasticity and a certain resistance to deformation, is not easy to break, and has a long service life. By directly setting the elastic buckle 5 on the fixed tool holder 2 and forming it in one piece, assembly steps can be saved, and the structural connection strength is high and the structural stability is better.

[0033] Optionally, combined Figure 4 , Figure 6 As shown, the limiting part 21 includes a first limiting block 211, a second limiting block 212, and a third limiting block 213. The first limiting block 211 and the second limiting block 212 are located on the left and right sides of the fixed blade 1, respectively, and the third limiting block 213 is located on the rear side of the fixed blade 1. The lower surfaces of the first limiting block 211, the second limiting block 212, and the third limiting block 213 all abut against the upper surface of the fixed blade 1, limiting the vertical position of the fixed blade 1 on the left, right, and rear sides. The movement positions are evenly distributed, thereby limiting the entire fixed blade. The vertical position of the fixed tool 1 ensures a more reliable connection between the fixed tool 1 and the fixed tool holder 2; the gaps between the first limiting block 211, the second limiting block 212, and the third limiting block 213 and the fixed tool holder 2 are all slightly greater than or equal to the thickness of the fixed tool 1, to ensure that the fixed tool 1 can be smoothly inserted into each limiting block, and to prevent the fixed tool 1 from moving in the vertical direction relative to the fixed tool holder 2; when the fixed tool 1 and the fixed tool holder 2 are assembled, the fixed tool 1 and the fixed tool holder 2 abut against each other in the front-back direction and also abut against each other in the left-right direction, to prevent the fixed tool 1 from moving in the front-back direction or the left-right direction.

[0034] Optionally, combined Figure 3 , Figure 4 As shown, it also includes a limiting plate 6 connected to the fixed tool holder 2, and the elastic buckle 5 is provided on the limiting plate 6; the limiting plate 6 is provided with a positioning hole 61, and the fixed tool holder 2 is provided with a positioning post 22 that cooperates with the positioning hole 61.

[0035] During assembly, the positioning pin 22 is first aligned with the positioning hole 61, the limiting plate 6 is installed on the fixed tool holder 2, and then the fixed tool 1 is pushed backward into the fixed tool holder 2, so that the elastic buckle 5 engages with the snap-fit ​​hole 11. Because the limiting plate 6 restricts the movement in the front-to-back direction under the action of the positioning pin 22 and the positioning hole 61, and restricts the movement in the vertical direction under the action of the limiting part 21 of the fixed tool holder 2, the fixed tool 1 is prevented from exiting forward, and the fixed tool 1 is fixed in the vertical direction under the limitation of the limiting part 21, preventing the fixed tool 1 from moving in the vertical direction, thus completing the mutual assembly of the fixed tool 1 and the fixed tool holder 2.

[0036] In this embodiment, the limiting plate 6 is set independently relative to the fixed tool holder 2, so that the two can be made of different materials. The fixed tool holder 2 is preferably made of plastic insulating and heat-insulating material, and the fixed tool 1 is preferably made of metal material. This makes it easier to process the elastic buckle 5 on the limiting plate 6, reducing the processing difficulty. Moreover, the movement of the limiting plate 6 in the front-back direction and the vertical direction can be realized by the mutual cooperation between the positioning post 22 and the positioning hole 61 and the limiting part 21 restricting the vertical movement of the fixed tool 1. This ensures that the fixed tool 1 and the fixed tool holder 2 can be firmly connected by the cooperation between the snap hole 11 and the elastic buckle 5. The structure is stable and reliable, and the assembly is convenient without the need for other assembly tools.

[0037] Optionally, combined Figure 7 As shown, the limiting plate 6 is also provided with a downwardly inclined elastic top piece 62. The elastic top piece 62 abuts against the fixed tool holder 2. The elastic top piece 62 is used to eliminate the assembly gap between the fixed tool 1, the limiting plate 6, and the fixed tool holder 2, thereby preventing the fixed tool 1 and the fixed tool holder 2 from shaking and ensuring the stability of the assembly structure. In this embodiment, there are two elastic buckles 5 and one elastic top piece 62. The elastic top piece 62 is located between the two elastic buckles 5. The elastic buckles 5 are inclined upward. The setting of two elastic buckles 5 makes the connection between the limiting plate 6 and the fixed tool 1 more secure. Placing the elastic top piece 62 between the two elastic buckles 5 can evenly eliminate the gap between the limiting plate 6 and the fixed tool holder 2.

[0038] Optionally, combined Figure 1 , Figure 3 , Figure 5 As shown, it also includes a movable blade 3 and a movable blade holder 4 connected to each other. The fixed blade 1 is provided with a sliding groove 12, and the movable blade holder 4 is provided with a movable column 41 that slides and engages with the sliding groove 12 in the left and right directions, so as to realize that the movable blade 3 reciprocates relative to the fixed blade 1 in the left and right directions. The movable blade holder 4 is pressed tightly on the movable blade 3 by a retaining spring to ensure that the movable blade 3 and the fixed blade 1 are in close contact with each other. The sliding groove 12 has a certain length in the left and right directions so that the blade head structure performs reciprocating cutting action, thereby effectively trimming hair.

[0039] Optionally, combined Figure 1 , Figure 2 , Figure 5 As shown, the moving blade 3 is provided with an oil storage tank 31, and an oil storage sponge 7 is placed in the oil storage tank 31. The oil storage sponge 7 is located between the moving blade 3 and the moving blade holder 4.

[0040] The oil reservoir 31 has a certain depth in the vertical direction, and can hold an oil-retaining sponge 7. The upper and lower surfaces of the oil-retaining sponge 7 abut against the moving blade holder 4 and the moving blade 3, so that oil can be squeezed out when the machine vibrates during startup. This oil has lubricating, cooling and rust-preventing functions, and allows the oil to flow to the friction surface between the moving blade 3 and the fixed blade 1. This ensures that the blade head is fully lubricated during operation, reduces wear and friction, extends the service life of the blade head structure, maintains the stable performance of the hair trimmer, and makes full use of the gap between the moving blade holder 4 and the moving blade 3 to place the oil-retaining sponge 7. This effectively utilizes the internal space of the blade head structure and achieves the purpose of automatic oil dispensing, saving users the operation of manually adding oil to the friction surface and improving the user experience. The oil-retaining sponge 7 can be pre-absorbed and stored with lubricating oil, or lubricating oil can be added after assembly.

[0041] Optionally, combined Figure 5 , Figure 6 As shown, the moving blade 3 is also provided with multiple oil guiding channels 32 that communicate with the oil storage tank 31. There is a friction surface between the fixed blade 1 and the moving blade 3, and the end of the oil guiding channel 32 is connected to the friction surface.

[0042] The oil guide channel 32 is recessed downward relative to the upper surface of the moving cutter 3. The two ends of the oil guide channel 32 are connected to the friction surface and the oil guide channel 32, respectively. The oil guide channel 32 ensures that the lubricating oil can be accurately guided to the friction surface, and the lubrication position is accurate, thereby reducing the wear and friction of the cutter head structure and improving the performance and life of the cutter head. In this embodiment, the moving cutter 3 is provided with four oil guide channels 32. Multiple oil guide channels 32 ensure that the lubricating oil can be evenly distributed on the friction surface, providing more effective, sufficient and uniform lubrication. In addition to the lubrication function, the lubricating oil can also have a cooling function when the cutter head is running, which helps to control the temperature and reduce wear and maintain the stability and durability of the cutter head.

[0043] Optionally, combined Figure 1 , Figure 2 , Figure 5As shown, the moving blade holder 4 is provided with an oil injection hole 42, which is located above the oil reservoir 31. The oil injection hole 42 allows users to easily add lubricating oil when needed without disassembling the entire blade head. The oil injection hole 42 allows users to maintain the blade head by directly injecting lubricating oil when the blade head needs additional lubrication, without performing complicated repairs or disassembly operations. Users can keep the lubrication system of the blade head in optimal condition in a timely manner, ensuring its continuous and efficient operation, which helps to improve the maintainability and performance of the hair trimmer and reduces the complexity of maintenance.

[0044] Another embodiment of the present invention provides a hair trimmer, including a blade head structure with a fixed blade that is easily assembled as described above.

[0045] In this embodiment of the hair trimmer, the fixed blade 1 and the fixed blade holder 2 are assembled by pushing the fixed blade 1 to engage with the elastic buckle 5 on the fixed blade holder 2. The assembly method is simple; the fixed blade 1 and the fixed blade holder 2 are assembled with a single push. The limiting part 21 on the fixed blade holder 2 is used to prevent the fixed blade 1 from moving in the vertical direction, ensuring the stability of the assembly structure. No assembly tools are required, resulting in high production efficiency, increased processing qualification rate, and reduced difficulty in subsequent replacement and maintenance of parts.

[0046] Another embodiment of the present invention provides an assembly method for assembling the cutter head structure of the simple fixed cutter assembly as described above, including the following steps:

[0047] S2, push the fixed blade 1 horizontally backward into the fixed blade holder 2 until the snap-fit ​​hole 11 on the fixed blade 1 engages with the elastic buckle 5 on the fixed blade holder 2. At this time, the limiting part 21 on the fixed blade holder 2 can restrict the fixed blade 1 from moving in the vertical direction.

[0048] First, ensure that both the fixed blade 1 and the fixed blade holder 2 are ready, including that the elastic buckle 5 is already set on the fixed blade holder 2 and the locking hole 11 is in the appropriate position on the fixed blade 1. At this time, the limiting part 21 should also be in the appropriate position on the fixed blade holder 2. Align the rear part of the fixed blade 1 with the front part of the fixed blade holder 2 to ensure that their relative positions are correct. Push the front part of the fixed blade 1 by hand and move it horizontally backward along the direction of the fixed blade holder 2. During this process, the elastic buckle 5 will enter the locking hole 11. During the pushing process, ensure that the locking hole 11 and the elastic buckle 5 cooperate to ensure full insertion and mutual locking. At the same time, during the pushing process, the limiting part 21 is on the upper surface of the fixed blade 1 to restrict the movement of the fixed blade 1 in the vertical direction, ensuring the stability of the assembled structure. Once the locking hole 11 and the elastic buckle 5 cooperate, the position between the fixed blade 1 and the fixed blade holder 2 is locked by the limiting part 21, which can ensure the stability of the assembly. You can also check the assembly effect to ensure that the fixed blade 1 is correctly assembled on the fixed blade holder 2 and is not loose.

[0049] In this embodiment, the assembly method of the fixed blade simple assembly cutter head structure is to push the fixed blade 1 to engage with the elastic buckle 5 on the fixed blade holder 2 to complete the assembly. The assembly method is simple, and the assembly between the fixed blade 1 and the fixed blade holder 2 is completed with a push. The limiting part 21 on the fixed blade holder 2 is used to prevent the fixed blade 1 from moving in the vertical direction, ensuring the stability of the assembly structure. No assembly tools are required, which increases the production efficiency, the pass rate of processing, and the difficulty of subsequent replacement and maintenance of parts.

[0050] Optionally, the fixed tool holder 2 is connected to a limiting plate 6, the elastic buckle 5 is provided on the limiting plate 6, the limiting plate 6 is provided with a positioning hole 61, the fixed tool holder 2 is provided with a positioning post 22, and the limiting part 21 includes a first limiting block 211, a second limiting block 212, and a third limiting block 213; the tool head structure assembly method includes the following steps:

[0051] S1, Align and engage the positioning pin 22 with the positioning hole 61 to install the limiting plate 6 on the fixed tool holder 2, ensuring that the positioning pin 22 is accurately inserted into the positioning hole 61, thereby installing the limiting plate 6 on the fixed tool holder 2 and ensuring the correct position of the limiting plate.

[0052] S2, push the fixed blade 1 horizontally backward into the fixed blade holder 2 until the snap-fit ​​hole 11 on the fixed blade 1 engages with the elastic buckle 5. At this time, the lower surfaces of the first limiting block 211, the second limiting block 212, and the third limiting block 213 all abut against the upper surface of the fixed blade 1 to restrict the fixed blade 1 from moving in the vertical direction. During this process, ensure that the snap-fit ​​hole 11 engages with the elastic buckle 5 as described above. In addition, in this step, ensure that the lower surfaces of the first limiting block 211, the second limiting block 212, and the third limiting block 213 all abut against the upper surface of the fixed blade 1, ensuring the correct position of the limiting plate 6 and the limiting part 21 in the assembled blade head structure, thereby restricting the movement of the fixed blade 1 in the vertical direction and ensuring the stability and performance of the assembled structure.

[0053] In this embodiment, the limiting plate 6 is set independently relative to the fixed tool holder 2, so that the two can be made of different materials. This makes it easier to process the elastic buckle 5 on the limiting plate 6, reducing the processing difficulty. Moreover, the movement of the limiting plate 6 in the front-back direction and the vertical direction can be achieved by the mutual cooperation of the positioning pin 22 and the positioning hole 61 and the limiting part 21 restricting the vertical movement of the fixed tool 1. This ensures that the fixed tool 1 and the fixed tool holder 2 can be firmly connected by the cooperation of the snap-fit ​​hole 11 and the elastic buckle 5. The structure is stable and reliable, and the assembly is convenient without the need for other assembly tools.

[0054] Optionally, the assembly method of the cutter head structure further includes the following steps:

[0055] S3, the moving blade 3 is installed on the fixed blade 1, and the oil storage sponge 7 is placed into the oil storage groove 31 on the moving blade 3, ensuring the correct assembly of the moving blade 3 and the oil storage sponge 7, as well as the normal operation of the lubrication system;

[0056] S4, the moving blade holder 4 is installed on the moving blade 3, and the movable column 41 of the moving blade holder 4 passes through the moving blade 3 and cooperates with the sliding groove 12 of the fixed blade 1, so that the moving blade 3 can reciprocate in the left and right direction relative to the fixed blade 1 to achieve the cutting action;

[0057] S5, inject lubricating oil into the oil injection hole 42 of the moving blade holder 4 so that the lubricating oil penetrates into the oil storage sponge 7. The lubricating oil is used to reduce friction, has a cooling effect, improves the performance of the blade structure, and ensures smooth cutting.

[0058] S6, vibration will occur when the machine is turned on. The moving blade 3 and the fixed blade 1 together squeeze the oil storage sponge 7 to produce oil, so that the squeezed-out lubricating oil can flow along the oil guide channel 32 on the moving blade 3 to the friction surface between the fixed blade 1 and the moving blade 3.

[0059] In this embodiment, the upper and lower surfaces of the oil-retaining sponge 7 abut against the moving blade holder 4 and the moving blade 3, so that when the machine is turned on and vibrates, the lubricating oil can be squeezed out and flow to the friction surface between the moving blade 3 and the fixed blade 1. This ensures that the blade head is fully lubricated during operation, reduces wear and friction, extends the service life of the blade head structure, and maintains the stable performance of the hair trimmer. It also makes full use of the gap between the moving blade holder 4 and the moving blade 3 to place the oil-retaining sponge 7, effectively utilizing the internal space of the blade head structure, and also achieves the purpose of automatic oil dispensing, saving users the operation of manually adding oil to the friction surface and improving the user experience. The setting of the oil filling hole 42 allows users to easily add lubricating oil when needed without disassembling the entire blade head. The oil guide channel 32 ensures that the lubricating oil can be accurately guided to the friction surface, and the lubrication position is accurate, thereby reducing the wear and friction of the blade head structure and improving the performance and life of the blade head.

[0060] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A tool bit structure for simple assembly of a fixed cutter, characterized by The device includes a fixed blade (1) and a fixed blade holder (2). The fixed blade holder (2) is provided with an elastic buckle (5). The fixed blade (1) is provided with a snap-fit ​​hole (11) that cooperates with the elastic buckle (5). The fixed blade holder (2) is provided with a limiting part (21) for limiting the up and down movement of the fixed blade (1). The device also includes a limiting plate (6) connected to the fixed blade holder (2). The elastic buckle (5) is provided on the limiting plate (6). The limiting plate (6) is provided with a positioning hole (61). The fixed blade holder (2) is provided with a positioning post (22) that cooperates with the positioning hole (61). The limiting plate (6) is also provided with a downwardly inclined elastic top piece (62). The elastic top piece (62) abuts against the fixed blade holder (2). There are two elastic buckles (5). The elastic top piece (62) is located between the two elastic buckles (5).

2. The cutter head structure for simple fixed-blade assembly according to claim 1, characterized in that, The limiting part (21) includes a first limiting block (211), a second limiting block (212) and a third limiting block (213). The first limiting block (211) and the second limiting block (212) are located on the left and right sides of the fixed blade (1) respectively, and the third limiting block (213) is located on the rear side of the fixed blade (1). The lower surfaces of the first limiting block (211), the second limiting block (212) and the third limiting block (213) all abut against the upper surface of the fixed blade (1).

3. The cutter head structure for simple assembly of a fixed cutter according to any one of claims 1-2, characterized in that, It also includes a movable blade (3) and a movable blade holder (4) connected to each other. The fixed blade (1) is provided with a sliding groove (12), and the movable blade holder (4) is provided with a movable column (41) that slides and cooperates with the sliding groove (12) in the left and right directions, so as to realize that the movable blade (3) reciprocates relative to the fixed blade (1) in the left and right directions.

4. The cutter head structure for simple fixed-blade assembly according to claim 3, characterized in that, The moving blade (3) is provided with an oil storage tank (31), and an oil storage sponge (7) is placed in the oil storage tank (31). The oil storage sponge (7) is located between the moving blade (3) and the moving blade holder (4).

5. The cutter head structure for simple assembly of a fixed cutter according to claim 4, characterized in that, The moving blade (3) is also provided with multiple oil guiding channels (32) that are connected to the oil storage tank (31). There is a friction surface between the fixed blade (1) and the moving blade (3), and the end of the oil guiding channel (32) is connected to the friction surface.

6. The cutter head structure for simple fixed-blade assembly according to claim 4, characterized in that, The moving tool holder (4) is provided with an oil injection hole (42), which is located above the oil storage tank (31).

7. A hair trimmer, characterized in that, Includes the cutter head structure with a fixed cutter assembly as described in any one of claims 1-6.

8. An assembly method for assembling the cutter head structure of the simplified fixed-blade assembly as described in any one of claims 1-6, characterized in that, Including the following steps: Push the fixed blade (1) horizontally backward into the fixed blade holder (2) until the snap hole (11) on the fixed blade (1) and the elastic buckle (5) on the fixed blade holder (2) cooperate with each other. At this time, the limiting part (21) on the fixed blade holder (2) can restrict the fixed blade (1) from moving in the vertical direction.

9. The assembly method of the cutter head structure for simple fixed-blade assembly according to claim 8, characterized in that, The fixed tool holder (2) is connected to a limiting plate (6), the elastic buckle (5) is provided on the limiting plate (6), the limiting plate (6) is provided with a positioning hole (61), the fixed tool holder (2) is provided with a positioning post (22), the limiting part (21) includes a first limiting block (211), a second limiting block (212) and a third limiting block (213); the tool head structure assembly method includes the following steps: Align the positioning pin (22) with the positioning hole (61) to install the limiting plate (6) on the fixed tool holder (2); The fixed blade (1) is pushed horizontally backward into the fixed blade holder (2) until the snap-fit ​​hole (11) on the fixed blade (1) engages with the elastic buckle (5). At this time, the lower surface of the first limiting block (211), the lower surface of the second limiting block (212), and the lower surface of the third limiting block (213) all abut against the upper surface of the fixed blade (1) to restrict the fixed blade (1) from moving in the vertical direction.

10. The assembly method of the cutter head structure for simple fixed-blade assembly according to claim 9, characterized in that, Including the following steps: Install the moving blade (3) on the fixed blade (1) and place the oil storage sponge (7) into the oil storage tank (31) on the moving blade (3); The movable tool holder (4) is installed on the movable tool (3), and the movable column (41) of the movable tool holder (4) passes through the movable tool (3) and cooperates with the sliding groove (12) of the fixed tool (1) so that the movable tool (3) can reciprocate in the left and right directions relative to the fixed tool (1); Lubricating oil is injected into the oil injection hole (42) of the moving tool holder (4) so ​​that the lubricating oil penetrates into the oil storage sponge (7); When the machine is turned on, it will vibrate. The moving blade (3) and the fixed blade (1) together squeeze the oil storage sponge (7) to produce oil, so that the squeezed-out lubricating oil can flow along the oil guide channel (32) on the moving blade (3) to the friction surface between the fixed blade (1) and the moving blade (3).

Images