Hair clipper

Abstract

The utility model relates to the technical field of hair clippers, in particular to a hair clipper, which comprises a shell, a roller, an encoder, a control unit and a motor for controlling a movable tool bit to act, and is characterized in that the encoder is used for adjusting the output power of the motor through the control unit according to the rotation angle of the roller, a roller hole is formed in the shell, and a mounting cover is mounted in the roller hole; and the roller is rotationally mounted in the mounting cover, so that dust is prevented from entering the shell through the roller hole through the mounting cover. The problems that an existing hair clipper is inconvenient in speed adjustment and relatively single in function are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hair clippers, in particular to a hair clipper. Background Art

[0002] A hair clipper is an electronic product used for trimming hair. It uses a motor to drive the corresponding moving cutter head to move, and then uses the moving cutter head to trim hair, avoiding the common electric clippers. Most electric clipper heads on the market currently have either no speed adjustment function, only a motor start button on the hair clipper, and the moving cutter head has no acceleration or deceleration function. Other types have a button to accelerate and a button to decelerate, and the output power of the motor that drives the moving cutter head is adjusted by the button. These have the problems of relatively inconvenient operation and relatively simple functions. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the present utility model is to provide a hair clipper that solves the problems of inconvenient speed adjustment and relatively single function of existing hair clippers.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a hair clipper, including a shell, a roller, an encoder, a control unit and a motor for controlling the movement of the movable cutter head. The encoder is used to adjust the output power of the motor through the control unit according to the rotation angle of the roller. A roller hole is opened on the shell, and a mounting cover is installed in the roller hole. The roller is rotatably installed in the mounting cover to prevent dust from entering the shell through the roller hole through the mounting cover.

[0005] Furthermore, the control unit includes a circuit board, and a avoidance gap for avoiding the installation cover is provided on the circuit board, and the installation cover is correspondingly embedded in the avoidance gap.

[0006] By adopting the above technical solution, the setting of the avoidance gap can accommodate the part of the installation cover located inside the shell, thereby optimizing the product volume of the entire hair clipper and making the distribution between the various components inside the shell more reasonable and compact. At the same time, the setting of the avoidance gap can further limit the position of the installation cover, making its structure more stable after being set inside the shell.

[0007] Furthermore, the roller includes a wheel body and a rotating shaft arranged on the axis of the wheel body. The outer portion of the rotating shaft is rotatably connected to the mounting cover through a shaft sleeve, and the end of the rotating shaft is connected to the encoder key.

[0008] By adopting the above technical solution, the shaft sleeve design facilitates the free rotation of the shaft in the mounting cover, thereby improving the smoothness of the rolling of the roller.

[0009] Furthermore, a mounting opening for accommodating the shaft sleeve is provided on the side surface of the mounting cover, and the shaft sleeve is correspondingly embedded in the mounting opening.

[0010] By adopting the above technical solution, the mounting opening is convenient for setting and mounting the shaft sleeve, so that the roller is more compact after being combined with the mounting cover through the shaft sleeve.

[0011] Furthermore, a plug-in structure is formed on the mounting cover and the shell, and the two are detachably connected through the plug-in structure.

[0012] By adopting the above technical solution, the plug-in method has the advantage of facilitating the disassembly and assembly of the two, and at the same time, it can also play a certain role in sealing the plug-in joint after plugging, so as to improve the sealing and dust-proof effect of the installation cover on the roller hole.

[0013] Furthermore, the plug-in structure includes a plug-in ring provided on the mounting cover to form a plug-in fit with the roller hole and an extension ring provided around the plug-in ring. When the plug-in ring is plugged into the roller hole, the extension ring corresponds to and fits the periphery of the sealed roller hole.

[0014] By adopting the above technical solution, the plug-in ring is plugged into the roller hole, and the roller hole can be closed by the mounting cover to reduce the risk of dust entering the shell through the roller hole, and the extension ring is offset against the periphery of the roller hole, further improving the dust-isolating effect of the mounting cover on the roller hole.

[0015] Furthermore, the plug-in structure also includes plug-in ribs arranged on the side of the plug-in ring and extension ribs arranged at the bottom of the installation groove, and matching grooves are provided on the shell at positions corresponding to the plug-in ribs and extension ribs.

[0016] By adopting the above technical solution, the plug-in ribs and the extension ribs are respectively plugged into the matching grooves of the shell, which can further improve the structural stability of the mounting cover after installation inside the shell, making it more stably fixed in the shell, so as to provide a stable base for the roller.

[0017] Furthermore, the shell includes an upper shell and a lower shell, the roller hole is correspondingly arranged on the upper shell, and the control unit is correspondingly arranged on the lower shell.

[0018] Furthermore, a mainboard hole is provided on the circuit board on the side of the avoidance gap, and a fastener corresponding to the mainboard hole is provided on the side of the mounting cover.

[0019] By adopting the above technical solution, the fasteners are connected and matched with the holes of the main board, so that the mounting cover can be preliminarily and stably combined with the circuit board to facilitate the assembly of subsequent products.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] 1. In the present invention, after the roller is connected to the encoder, the encoder can detect the change in the roller's rotation angle, and then convert the change in the roller's rotation angle into an electrical signal and transmit it to the circuit board. The circuit board then controls the motor to output different powers according to different electrical signals to adjust the running speed of the movable cutter head. This method is more convenient and more linear for adjusting the running speed of the movable cutter head, and its practicality and functional diversity are relatively better.

[0022] 2. In the present invention, a mounting cover is provided on the roller hole of the housing and the roller is installed using the mounting cover, thereby effectively reducing the probability of dust entering the housing through the roller hole, effectively reducing the pollution of dust to the precision parts inside the hair clipper, and extending the service life of the equipment. At the same time, the roller is rotatably mounted on the mounting cover to avoid the roller being directly connected to the housing and causing wear of the housing after long-term use of the roller, thereby effectively reducing the subsequent maintenance cost of the product. At the same time, the installation of the mounting cover also separates the roller from the electrical components inside the hair clipper, avoiding the situation where the circuit board, wires and other components inside the hair clipper are accidentally worn when the roller rotates, thereby effectively reducing the product failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a cross-sectional view of the structure of the hair clipper of the present utility model.

[0024] Figure 2 This is an exploded view of the hair clipper structure of the present utility model.

[0025] Figure 3 This is a schematic diagram of the installation cover structure of the utility model.

[0026] Figure 4 This is a schematic diagram of the roller structure of the utility model.

[0027] Figure 5 This is a schematic diagram of the upper cover structure of the utility model.

[0028] In the picture:

[0029] 100 housing, 110 lower housing, 120 upper housing, 121 roller hole, 122 matching groove, 123 shaft groove, 130 end cover, 140 protective sleeve.

[0030] 200 cutter head assembly, 210 fixed cutter head, 220 movable cutter head;

[0031] 300 motor.

[0032] 400 roller, 410 rotating shaft, 411 first shaft, 422 second shaft, 420 sleeve.

[0033] 500 batteries.

[0034] 600 mounting cover, 610 mounting opening, 620 plug-in ribs, 630 extension ribs, 640 plug-in ring, 650 extension ring.

[0035] 700 circuit board, 710 avoidance gap.

[0036] 800 encoder. DETAILED DESCRIPTION

[0037] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0038] Reference Figure 1 and 2 The hair clipper mainly comprises a housing 100, a cutter head assembly 200, a roller 400, an encoder 800, a control unit and a motor 300. The cutter head assembly 200 comprises a fixed cutter head 210 fixed at the end of the housing 100 and a movable cutter head 220 movably arranged on one side of the fixed cutter head 210. The movable cutter head 220 is driven by the motor 300 in conjunction with the eccentric wheel and other transmission components, and reciprocates on one side of the fixed cutter head 210 to achieve the haircutting function. The encoder 800 is connected to the circuit board 700 for rotating the roller 40. 0 rotation angle, the output power of the motor 300 is adjusted by the control unit, a roller hole 121 is opened on the housing 100, and a mounting cover 600 is installed in the roller hole 121. The roller 400 is rotatably installed in the mounting cover 600. The encoder 800 can detect the change in the rotation angle of the roller 400, and then convert the physical quantity of the rotation of the roller 400 into an electrical signal and transmit it to the circuit board 700. The circuit board 700 then controls the motor 300 to output different powers according to different electrical signals, thereby adjusting the operating speed of the movable cutter head 220.

[0039] In this embodiment, the encoder 800 may be a rotary encoder.

[0040] In this embodiment, the shell 100 includes an upper shell 120 and a lower shell 110, which can be disassembled and assembled to form a cavity for accommodating various electronic components inside the hair clipper. The corresponding roller hole 121 is provided on the upper shell 120. After the upper shell 120 and the lower shell 110 are assembled, the end of the shell 100 away from the movable cutter head 220 is sealed by the end cover 130.

[0041] In this embodiment, the control unit is a circuit board 700, and an avoidance gap 710 is provided on the circuit board 700 to avoid the installation cover 600. When the installation cover 600 is installed with the roller hole 121, the installation cover 600 is correspondingly embedded in the avoidance gap 710. This design helps to optimize the product structure and make the distribution of internal components of the shell 100 relatively compact and reasonable.

[0042] In this embodiment, refer to Figure 4The roller 400 includes a wheel body and a rotating shaft 410 arranged on the axis of the wheel body. The rotating shaft 410 includes a first shaft 411 and a second shaft 412. The outside of the first shaft 411 is rotatably connected to the mounting cover 600 through a shaft sleeve 420, and the end of the second shaft 412 is key-connected to the encoder 800.

[0043] In this embodiment, the second shaft 412 is a non-circular prism structure, such as a hexagonal prism, a pentagonal prism, etc., and the encoder 800 is provided with a corresponding prism hole at the corresponding position, and its second shaft 412 is inserted into the corresponding prism hole, so that when the roller 400 rotates, the encoder 800 can be driven by the second shaft 412 to detect the angle change of the roller 400.

[0044] In this embodiment, refer to Figure 2 and 3 An open cavity with an opening facing upward is formed inside the mounting cover 600. The shape of the open cavity is adapted to the shape of the roller 400 so that the roller 400 can rotate inside the mounting cover 600. Mounting openings 610 corresponding to the first axis 411 are provided on both sides of the mounting cover 600. The mounting openings 610 form a snap fit with the shaft sleeve 420 to facilitate limiting the position of the roller 400.

[0045] In this embodiment, mainboard holes are opened on both sides of the avoidance gap 710 on the circuit board 700, and fasteners are provided at corresponding positions on the mounting cover 600. The fasteners can be screws, clips or other fasteners. The mounting cover 600 can be fixed on the circuit board 700 by fastening between the connecting parts and the mainboard holes.

[0046] In this embodiment, refer to Figure 3 The mounting cover 600 and the shell 100 are connected by a plug-in structure. One advantage of using the plug-in structure is that it is convenient to improve the structural stability of the mounting cover 600 set in the shell 100, and it is also convenient for the two to be disassembled and assembled. When the plug-in structure is used, the sealing of the connection between the mounting cover 600 and the roller hole 121 can be improved when plugged in.

[0047] In this embodiment, the plug-in structure includes a plug-in ring 640 provided on the mounting cover 600 and an extension ring 650 provided around the plug-in ring 640. The shape of the plug-in ring 640 matches the shape of the roller hole 121 and can be plugged into the roller hole 121. After the plug-in ring 640 and the roller hole 121 are plugged into place, the extension ring 650 is tightly sealed around the roller hole 121. This arrangement has the advantage of helping to improve the sealing effect of the mounting cover 600 on the roller hole 121 and reducing the probability of dust entering the housing 100 through the roller hole 121.

[0048] Further, refer to Figure 3 and 5The plug-in structure also includes plug-in ribs 620 provided at the front and rear ends of the mounting cover 600 and an extension rib 630 provided at the bottom thereof. The inner walls of the upper shell 120 and the lower shell 110 are correspondingly provided with matching grooves 122 that match the plug-in ribs 620 and the extension ribs 630. In this way, the upper end of the mounting cover 600 is defined after being plugged into the roller hole 121 through the plug-in ring 640, and the lower end of the mounting cover 600 is defined after being plugged into the matching groove 122 of the lower shell 110 through the extension rib 630. The front and rear ends of the mounting cover 600 are also defined after being plugged into the matching groove 122 of the upper shell 120 through the plug-in structure. Based on this, the mounting cover 600 can be stably defined in the shell 100 through the plug-in structure, which effectively improves the installation stability and safety of the mounting cover 600 in the shell 100.

[0049] Based on the above embodiment, refer to Figure 5 An axis groove 123 is provided at the position of the upper shell 120 corresponding to the rotating shaft 410. When the upper shell 120 and the lower shell 110 are assembled, the upper part of the rotating shaft 410 is correspondingly embedded in the shaft sleeve 123, which can further improve the fixing effect of the rotating shaft 410 in the shell 100.

[0050] Based on the above embodiment, after the upper shell 120 and the lower shell 110 are assembled, the entire shell 100 can be protected by the protective cover 140 to prevent the surface of the shell 100 from being scratched.

[0051] In this embodiment, other components of the hair clipper, such as the battery 500 for powering electronic components such as the circuit board 700 and the motor 300, the charging port for charging the battery 500, and other existing technical components, are not described here one by one.

[0052] Although the preferred embodiments of the present invention have been described in detail above, it should be clearly understood that various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A hair clipper comprising a housing, a roller, an encoder, a control unit and a motor for controlling the movement of a moving cutter head, characterized in that: The encoder is used to adjust the output power of the motor through the control unit according to the rotation angle of the roller. A roller hole is opened on the shell, and a mounting cover is installed in the roller hole. The roller is rotatably installed in the mounting cover to prevent dust from entering the shell through the roller hole.

2. A hair clipper according to claim 1, characterized in that: The control unit includes a circuit board. The circuit board is provided with an avoidance gap for avoiding the installation cover. The installation cover is correspondingly embedded in the avoidance gap.

3. A hair clipper according to claim 1, characterized in that: The roller includes a wheel body and a rotating shaft arranged on the axis of the wheel body. The outer portion of the rotating shaft is rotatably connected to the mounting cover through a shaft sleeve, and the end portion of the rotating shaft is connected to the encoder key.

4. A hair clipper according to claim 3, characterized in that: A mounting opening for accommodating the shaft sleeve is provided on the side surface of the mounting cover, and the shaft sleeve is correspondingly embedded in the mounting opening.

5. A hair clipper according to claim 1, characterized in that: A plug-in structure is formed on the mounting cover and the shell, and the two are detachably connected through the plug-in structure.

6. A hair clipper according to claim 5, characterized in that: The plug-in structure includes a plug-in ring provided on the mounting cover and plugged in with the roller hole, and an extension ring provided around the plug-in ring. When the plug-in ring is plugged into the roller hole, the extension ring fits and seals the periphery of the roller hole.

7. A hair clipper according to claim 6, characterized in that: The plug-in structure further includes a plug-in rib provided on the side of the plug-in ring and an extension rib provided at the bottom of the installation groove. The housing is provided with matching grooves corresponding to the positions of the plug-in rib and the extension rib.

8. A hair clipper according to claim 1, characterized in that: The housing comprises an upper shell and a lower shell, the roller hole is correspondingly arranged on the upper shell, and the control unit is correspondingly arranged on the lower shell.

9. A hair clipper according to claim 2, characterized in that: A mainboard hole is provided on the circuit board at a side surface of the avoidance gap, and a fastener corresponding to the mainboard hole is provided on a side surface of the mounting cover.

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