Hair clipper

Abstract

The utility model relates to the technical field of hair clipper products, in particular to a hair clipper which comprises a machine shell and a control switch key arranged on the machine shell in a sliding mode, the machine shell comprises a bottom shell, a face shell and a machine core shell, the bottom shell and the face shell are detachably connected, the machine core shell is arranged between the bottom shell and the face shell and connected with the bottom shell, and the control switch key is arranged on the machine core shell in a sliding mode. An operation opening is formed in the position, corresponding to the control switch key, of the face shell, a dustproof plate used for sealing the periphery of the operation opening is arranged between the machine core shell and the face shell, the control switch key is arranged on the dustproof plate in a sliding mode, and the problems that the protection grade of an existing hair clipper is relatively low, and the product is prone to being damaged due to the fact that dust, broken hair and other foreign matter enter a machine shell are solved.

Description

Technical Field

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

[0002] A hair clipper, a common hair trimming tool in daily life, mainly consists of a housing, electromechanical components inside the housing, a control switch, and a blade. The control switch controls the electromechanical components to drive the blade to achieve the hair trimming function.

[0003] Traditional hair clippers typically have their control switches directly mounted on the surface of the casing. This design has significant drawbacks: First, dust, hair, and other impurities can easily seep into the gap between the control port and the button. Over time, this accumulation can lead to short circuits in the internal circuit board or failure of the trigger switch. Improvements are needed. 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 that solves the problem that the existing hair clippers have relatively low protection levels and are easily damaged by dust, hair clippings and other debris entering the casing.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a hair clipper, including a housing and a control switch slidably disposed on the housing. The housing includes a bottom shell, a top shell, and a core shell. The bottom shell and the top shell are detachably connected. The core shell is disposed between the two and connected to the bottom shell. The control switch is slidably disposed on the core shell. The top shell has an operation port corresponding to the position of the control switch. A dustproof plate for sealing the periphery of the operation port is provided between the core shell and the top shell. The control switch is slidably disposed on the dustproof plate.

[0006] Furthermore, the surface of the movement case is provided with a receiving groove, and the dustproof plate is correspondingly embedded in the receiving groove.

[0007] By adopting the above technical solution, the dustproof plate is embedded in the receiving groove on the surface of the movement shell, achieving precise positioning and anti-vibration and anti-loosening effects. At the same time, the product structure is optimized, making the assembly precision between the dustproof plate and the movement shell higher.

[0008] Furthermore, the receiving groove is provided with several mounting feet, and the dustproof plate is provided with matching mounting holes. The dustproof plate is inserted into the mounting feet through the mounting holes to nest and cooperate with the receiving groove.

[0009] By adopting the above technical solution and using the mounting feet and mounting hole plug-in structure, the dust cover can be quickly disassembled without screws, which facilitates the rapid assembly between the dust cover and the movement housing, and also improves the stability of the dust cover when it is fixed in the receiving groove.

[0010] Furthermore, a circuit board is installed between the movement housing and the bottom housing. The circuit board has a trigger switch corresponding to the control switch. A second through hole is provided on the dustproof plate to allow the trigger switch to be triggered when the control switch slides. A first through hole that is vertically aligned with the control switch is provided on the movement housing.

[0011] By adopting the above technical solution, the corresponding connection and cooperation between the first through hole on the mechanism shell and the second through hole on the dustproof plate, and through the second through hole and the first through hole, it is convenient to control the on / off switch to slide and form a triggering with the trigger switch inside the mechanism shell.

[0012] Furthermore, the control switch includes a speed adjustment key and a power button that is located within the speed adjustment key. The speed adjustment key includes a slider, a pin, and a push plate. The bottom of the slider is connected to the push plate via the pin. When the slider slides, it drives the push plate to move via the pin, thereby triggering the trigger switch via the push plate. The movement housing is provided with a sliding hole that allows the pin to move through.

[0013] By adopting the above technical solution, the sliding block is connected to the push plate through the pin, which makes it easy to trigger the corresponding trigger switch when the push plate moves inside the housing.

[0014] Furthermore, the power button includes a pressing part and a trigger plate located at the bottom of the pressing part, and the power button triggers the trigger switch through the trigger plate.

[0015] By adopting the above technical solution, the setting of the trigger plate is beneficial for the power button to trigger the corresponding trigger switch after being pressed and displaced.

[0016] Furthermore, the second through hole includes a main hole for accommodating the pressing part and side holes on both sides of the main hole, with the pins correspondingly and movably disposed in the side holes.

[0017] By adopting the above technical solution, setting the side holes helps to guide and restrict the movement trajectory of the pins.

[0018] Furthermore, the movement housing has sliding holes on both sides of the opening that correspond to the side holes and allow the pins to slide.

[0019] By adopting the above technical solution, the sliding hole design allows the pins to slide on the movement housing.

[0020] Furthermore, the contact surface between the dustproof plate and the control switch is a smooth plane.

[0021] By adopting the above technical solution, the smooth contact surface of the dustproof plate significantly reduces sliding friction resistance, ensuring smooth and quiet operation.

[0022] Compared with the prior art, the advantages of this utility model are:

[0023] 1. In this utility model, a dustproof plate is added between the operating port of the mechanism shell and the front shell to form a physical isolation barrier. The control switch slides directly on the dustproof plate, and the dustproof plate tightly covers the area around the operating port, completely blocking dust and hair from entering the internal circuit board and trigger switch through the gaps in the operating port, significantly extending the product's service life.

[0024] 2. In this utility model, since the control switch is slidably connected to the dustproof plate instead of being directly slidably connected to the movement housing, the problem of the movement housing being easily damaged by wear is effectively avoided. At the same time, by adding the dustproof plate, the smoothness of the control switch sliding on the movement housing can also be improved.

[0025] 3. In this utility model, by adding a core shell between the top shell and the bottom shell, the protective ability of the shell for the internal electromechanical components of the hair clipper can be significantly enhanced, avoiding the problem of damage to the electromechanical components when the hair clipper is hit, and effectively improving the structural stability and durability of the product. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the hair clipper of this utility model.

[0027] Figure 2 This is an exploded view of the structure of the hair clipper of this utility model.

[0028] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0029] Figure 4 This utility model Figure 2 Enlarged view of the structure at point B in the middle.

[0030] Figure 5 This utility model Figure 2 Enlarged view of the structure at point C.

[0031] In the picture:

[0032] 1. Housing, 11. Bottom housing, 12. Front housing, 121. Operating port, 13. Mechanism housing, 131. Circumvention notch, 132. Sliding hole, 133. Opening, 134. Receiving groove.

[0033] 21 Speed ​​control key, 21a Through hole, 210 Sliding part, 211 Sliding block, 212 Pin, 22 Power key, 221 Pressing part, 222 Trigger plate, 223 Second elastic element, 23 Push plate, 231 Slot, 232 Positioning post, 233 Through hole, 234 Fixing foot.

[0034] 3. Elastic reset structure, 30. V-shaped inclined surface, 31. First elastic element, 32. Guide block, 321. Mounting hole, 33. Reset plate, 331. First through hole.

[0035] 4. Dustproof plate, 41. Second through hole, 411. Main hole, 412. Side hole.

[0036] 5. Circuit board, 51. Sliding groove.

[0037] 6. Trigger switch, 61. Deceleration switch, 62. Acceleration switch, 63. Power switch. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0039] Reference Figure 1 and 2 The hair clipper mainly consists of a housing 1, electromechanical components, a control switch, and a moving blade. The electromechanical components are located inside the housing 1 and are used to drive the moving blade to reciprocate. The control switch is located on the surface of the housing 1 and sends an operation signal to the electromechanical components to start the hair clipper or adjust its speed.

[0040] Regarding the electromechanical components of the hair clipper, since these are common components in this field, only a general introduction is given here. The electromechanical components mainly consist of a power module, a control module, a transmission module, and a power supply module. The power module includes a motor. The control module includes a circuit board 5, a trigger switch 6 connected to the circuit board 5, sensors, overload protection, etc. The transmission module mainly transmits the mechanical energy output by the motor to the blade head to drive the blade head to move. Its main components include a gear set, an eccentric wheel, a transmission shaft, and a bushing. The power supply module mainly consists of a battery, a charging port, and a voltage conversion circuit, etc. Its main function is to supply power to the circuit board 5 and the motor. Of course, the above modules may also include other structural components. For example, the power module may also include a heat sink for the motor, heat sink, etc. Since these are existing conventional designs and are not related to the utility model of this application, they will not be described in detail.

[0041] In this embodiment, the housing 1 of the existing hair clipper is usually composed of a bottom shell 11 and a top shell 12 covering the bottom shell 11. The electromechanical components are correspondingly disposed in the cavity formed after the two are covered, and the corresponding sliding components are slidably disposed on the top shell 12. The housing 1 in this embodiment can also adopt this structure.

[0042] Furthermore, in order to improve the sealing performance of the product and the rationality of the layout of each component, in this embodiment, the housing 1 also includes a core housing 13. The core housing 13 is located between the bottom housing 11 and the top housing 12. It is combined with the bottom housing 11 by means of screws, adhesives, etc., and the above-mentioned electromechanical components are confined in the placement cavity formed between the core housing 13 and the bottom housing 11. The top housing 12 is installed on the bottom housing 11 and covers the core housing 13. The speed control key 21 is slidably disposed on the core housing 13, and the top housing 12 is provided with an operation port 121 at the position corresponding to the speed control key 21, so as to operate the speed control key 21 to slide on the core housing 13 through the operation port 121.

[0043] Reference Figure 1 and 2 The control switch includes a power button 22 and a speed control button 21, both of which correspond to the trigger switch 6 on the circuit board 5. The trigger switch 6 includes a power switch 63, an acceleration switch 62, and a deceleration switch 61 on the circuit board 5. The speed control button 21 is slidably mounted on the core housing 13. When it slides to the correct position on the core housing 13, it will trigger the acceleration switch 62 or the deceleration switch 61, thereby adjusting the output power of the hair clipper to achieve the purpose of motor speed control. The power button 22 is integrated on the speed control button 21 and can trigger the power switch 63 after moving relative to the speed control button 21, thereby starting or stopping the motor.

[0044] In this embodiment, the trigger switch 6 can be a capacitive touch switch, a resistive touch switch, a photoelectric switch / optical interruptor, a membrane switch, a piezoelectric switch, or a mechanical micro switch, etc. As long as the power button 22 can trigger the power switch 63 to turn on or off after displacement, and the speed control button 21 can trigger the acceleration switch 62 or the deceleration switch 61 after sliding, the trigger switch 6 can also be of other types. It can be a mechanical contact start method or a non-contact start method, such as inductive start, magnetic start, etc., which will not be elaborated here.

[0045] In this embodiment, refer to Figure 2 As an integrated combination of the power switch and the speed control key 21, the speed control key 21 has a through hole 21a inside. The power key 22 is movably disposed in the through hole 21a and can trigger the power switch 63 after moving along the through hole 21a. The through hole 21a can be located in the center of the power key 22 or in other positions. The two can be directly plugged in and movably connected, or they can be indirectly connected through other components. As long as the integrated setting of the two can be achieved and the corresponding trigger switch 6 can be triggered after their respective displacement, the power key 22 and the speed control key 21 can also have other structures, which will not be described in detail here.

[0046] In this embodiment, refer to Figure 2 and 3 The power switch 63, acceleration switch 62, and deceleration switch 61 can be directly integrated on the circuit board 5, or they can be installed in other positions via wires. As long as the acceleration switch 62 and deceleration switch 61 are located in the sliding direction of the speed control key 21, and the speed control key 21 can trigger the corresponding acceleration switch 62 or deceleration switch 61 after sliding into place on the mechanism housing 13, the power switch 63 is located between the acceleration switch 62 and deceleration switch 61. The three are arranged linearly, and the position of the power switch 63 corresponds to the position of the power button 22.

[0047] In this embodiment, refer to Figure 2 The power button 22 includes a pressing part 221 and a trigger plate 222 located at the bottom of the pressing part 221. The pressing part 221 is movably inserted through the through hole 21a of the speed control button 21. The trigger plate 222 is inserted through the core housing 13 and corresponds to the position of the power switch 63 on the circuit board 5. After pressing the pressing part 221, the trigger plate 222 descends to trigger the power switch 63, thereby turning on the hair clipper.

[0048] In this embodiment, to avoid the situation where the speed control key 21 moves synchronously with the power key 22 and its trigger plate 222 cannot be aligned with the position of the power key 22, thus requiring the speed control key 21 to be reset before the power key 22 can be turned off when the hair clipper is turned off, preferably, the trigger plate 222 is set as a rectangular plate along the sliding direction of the speed control key 21. Its length is such that when the speed control key 21 moves to its extreme position, the trigger plate 222 can trigger the power switch 63 when the power key 22 is pressed. Thus, the problem that the power switch 63 can be triggered when the speed control key 21 slides to any position and the power key 22 is pressed can be solved by the rectangular trigger plate 222.

[0049] In this embodiment, the trigger plate 222 is a rectangular structure, specifically a cuboid. It can be imagined that as long as the speed adjustment key 21 can be slid to any position, the power switch 63 can be triggered by pressing the power button 22. Its structure can also be circular, triangular prism or other shapes. Its shape is not limited to a rectangular structure, and its shapes will not be listed one by one here.

[0050] Reference Figure 2 and 4 An opening 133 is provided on the mechanism housing 13 at the position corresponding to the trigger plate 222. The opening 133 is provided to facilitate the movement of the trigger plate 222 on the mechanism housing 13 to trigger the power switch 63.

[0051] In this embodiment, refer to Figure 2 As a specific embodiment of the speed control key 21, the speed control key 21 includes a sliding part 210 that is slidably connected to the mechanism housing 13 and a push plate 23 located at the bottom of the sliding part 210 and inside the mechanism housing 1. When the sliding part 210 slides, it synchronously drives the push plate 23 to move to trigger the acceleration switch 62 or the deceleration switch 61.

[0052] In this embodiment, refer to Figure 2 and 4 The surface of the movement housing 13 facing the face shell 12 is provided with a receiving groove 134, and the sliding part 210 is slidably disposed in the receiving groove 134.

[0053] In this embodiment, as an example of the sliding part 210 driving the push plate 23 to move synchronously, refer to... Figure 2The sliding part 210 includes a sliding block 211 and pins 212 located on the front and rear sides of the bottom of the sliding block 211. The insert plate is provided with grooves corresponding to the two pins 212. The sliding plate moves synchronously with the push plate 23 through the cooperation of the pins 212 and the slot 231.

[0054] In this embodiment, a sliding hole 132 is provided on the movement housing 13 corresponding to the through position of the pin 212. The sliding hole 132 is provided on the movement housing 13 along the sliding direction of the sliding block 211. When the sliding block 211 slides, it drives the pin 212 and the push plate 23 to move. The pin 212 is correspondingly slidably disposed in the sliding hole 132.

[0055] In this embodiment, the purpose of placing the pin 212 on the bottom front and rear sides of the sliding block 211 is to provide space for the trigger plate 222, so as to optimize the composition precision between the various components of the product.

[0056] In this embodiment, the push plate 23 functions to trigger the corresponding acceleration switch 62 or deceleration switch 61 after the sliding block 211 moves synchronously. As one way to set the push plate 23, it can be slidably mounted on the circuit board 5. For details, refer to... Figure 2 , 3 4. The bottom of the push plate 23 is provided with a fixed foot 234, and the corresponding circuit board 5 is provided with a sliding groove 51 that forms a clearance fit with the fixed foot 234. The sliding groove 51 extends along the movement direction of the sliding block 211 to allow the fixed foot 234 to slide along the sliding groove 51. This design helps to improve the stability of the push plate 23 during displacement.

[0057] In this embodiment, the push plate 23 has a through hole 233 at its center, and the lower end of the corresponding trigger plate 222 is inserted into it to realize the combination between the power button 22 and the push plate 23, effectively improving the stability of the two after assembly.

[0058] In the above embodiment, the sliding block 211 is connected to the push plate 23 by the insertion of the pin 212 to achieve synchronous movement between the two. It is conceivable that as long as the sliding block 211 can drive the push plate 23 to move synchronously when it slides, the synchronous movement between the sliding block 211 and the push plate 23 can also be achieved in other ways. It can be a mechanical contact linkage, such as the aforementioned pin 212, or a non-contact waterproof method, such as a magnetic attraction method, that is, setting mutually attractive magnetic materials on the sliding block 211 and the push plate 23, and using magnetism to achieve synchronous driving of the push plate 23 when the sliding block 211 slides. Of course, there can be other methods, which will not be elaborated here.

[0059] Based on the above embodiments, in order to facilitate the automatic reset of the power button 22 after it is pressed, the power button 22 is also provided with a second elastic element 223.

[0060] Preferably, as a specific arrangement of the second elastic element 223, the second elastic element 223 can be elastically loaded between the power button 22 and the push plate 23. When the artificial finger applies pressure to the pressing part 221, the second elastic element 223 is elastically compressed. After the external force is removed, the second elastic element 223 resets and pushes the pressing part 221 to reset, thereby realizing the reset operation of the power button 22.

[0061] In this embodiment, the second elastic element 223 can be a compression spring, a spring, a torsion spring, or elastic rubber. As long as it can provide elastic restoring force after the power button 22 is pressed, it can also be other components or other mechanisms. The following describes its specific structure using the second elastic element 223 as a spring as an example.

[0062] Specifically, refer to Figure 2 and 4 One, two, or more springs can be set. Taking two as an example, the two springs are located on the front and back sides of the trigger plate 222 (the front and back sides in this article refer to the width direction of the hair clipper). The upper ends of the two springs are connected to the bottom of the pressing part 221, and the lower ends of the two springs are connected to the push plate 23. This completes the assembly of the springs.

[0063] In this embodiment, in order to improve the connection stability between the push plate 23 and the spring, a positioning post 232 can be set at the position of the spring on the push plate 23. By fitting the spring onto the positioning post 232, the stability of the spring installation can be improved. Similarly, a positioning post 232 can also be set at the bottom of the pressing part 221 to improve the assembly stability between it and the spring.

[0064] In this embodiment, the upper end of the spring is connected to the bottom of the pressing part 221. Of course, it is conceivable that the spring can also abut against the side of the trigger plate 222, which can also achieve the purpose of elastic support for the power button 22. For example, if there is a protrusion on the side of the trigger plate 222, the spring can be fitted on the protrusion to achieve the above effect.

[0065] Based on the above embodiments, the opening 133 provided on the movement housing 13 is located in the receiving groove 134 of the movement housing 13, and the opening 133 also serves to accommodate the spring.

[0066] In this embodiment, the lower end of the spring is mounted on the push plate 23. The advantage of this is that the push plate 23 can slide synchronously with the displacement of the sliding block 211. In this way, when the push plate 23, the spring, the pressing part 221 and the trigger plate 222 are displaced synchronously, the spring will only undergo vertical elastic deformation, thereby providing elastic restoring force for the pressing part 221. Of course, it is conceivable that the lower end of the spring is not located on the push plate 23, but can be located on the housing 1 or the circuit board 5. As long as it can provide elastic restoring force for the pressing part 221 after pressing, the spring can also be set in other positions, which will not be elaborated here.

[0067] Based on the above embodiments, in order for the speed control key 21 to quickly reset after sliding and touching the corresponding acceleration switch 62 or deceleration switch 61, an elastic reset structure 3 is also provided for the reset work after the speed control key 21 is displaced.

[0068] Specifically, refer to Figure 2 , 4 Taking the elastic reset structure 3 on the movement housing 13 as an example, it includes a reset plate 33, guide blocks 32, and a first elastic element 31. The reset plate 33 is located in the receiving groove 134 of the movement housing 13, and has a first through hole 331 inside. The lower end of the pin 212 of the sliding block 211 passes through the first through hole 331 and the sliding hole 132 in sequence to form an insertion with the push plate 23. When the sliding block 211 is displaced, it will drive the reset plate 33 to move synchronously through the pin 212. The guide blocks 32 and the first elastic element 31 are located on the front and rear sides of the receiving groove 134. The side of the two guide blocks 32 adjacent to each other forms a wedge fit with the side of the reset plate 33. The side of the two guide blocks 32 far apart from each other is elastically abutted against the movement housing 13 by a spring. In this way, the front and rear sides of the reset plate 33 are guided by the guide blocks. The guide block 32 and the first elastic element 31 are elastically pressed together. Since the guide block 32 and the reset plate 33 form a wedge fit, when the sliding block 211 moves to drive the pin 212 and the push plate 23 to move, the pin 212 synchronously drives the reset plate 33 to move relative to each other. During the movement, the reset plate 33 will squeeze the guide block 32 along the width direction of the housing 1 through the wedge fit between it and the guide block 32. At this time, the first elastic element 31 is compressed. When the external force pushing the sliding block 211 is removed, the first elastic element 31 resets and drives the guide block 32 to reset and push the reset plate 33 to the initial position. During the reset process, the reset plate 33 drives the sliding block 211 to reset through the pin 212. Thus, the speed adjustment key 21 is reset after speed adjustment. This process is repeated to achieve multiple upshift or downshift operations.

[0069] In the above embodiment, the moving direction of the sliding block 211 is the length direction of the housing 1, and the elastic extension direction of the first elastic member 31 is perpendicular to this direction in the horizontal plane, that is, the width direction of the housing 1.

[0070] In this embodiment, as a wedge-shaped engagement between the reset plate 33 and the guide block 32, the adjacent sides of the reset plate 33 and the guide block 32 are provided with V-shaped inclined surfaces 30. The advantage of the V-shaped inclined surfaces 30 is that, regardless of whether the sliding block 211 triggers the acceleration switch 62 forward or the deceleration switch 61 backward, the reset work after displacement can be achieved under the elastic action of the first elastic member 31.

[0071] In this embodiment, the first elastic element 31 can be a spring, compression spring, elastic rubber, etc., as long as it can increase the elastic restoring force of the guide block 32 and the reset block after displacement.

[0072] Reference Figure 4 In order to optimize the product structure, a clearance notch 131 is provided on the mechanism housing 13. The corresponding first elastic element 31 and guide block 32 are respectively provided in the clearance notch 131. A mounting hole 321 can be provided at the connection between the guide block 32 and the first elastic element 31 to facilitate the assembly between the first elastic element 31 and the guide block 32. Through the above design, the assembly accuracy of the product's dependent parts can be effectively improved.

[0073] In this embodiment, the elastic reset structure 3 includes a reset plate 33, a guide block 32, and a first elastic element 31. As long as it can reset the sliding block 211 after displacement to realize the reset function of the speed control key 21 after displacement, the elastic reset structure 3 can also be other components, mechanisms, or parts. Its setting position is not limited to the core shell 13. It can also be on the front shell 12 or the bottom shell 11, as long as it can realize its reset function.

[0074] Based on the above embodiments, in order to further improve the sealing effect of the product, and at the same time improve the smoothness of the sliding block 211 when sliding on the core housing 13.

[0075] In this embodiment, refer to Figure 2 A dustproof plate 4 is provided between the upper end face of the movement housing 13 and the front housing 12. The dustproof plate 4 is adapted to the shape of the receiving groove 134 on the movement housing 13 and is embedded in the receiving groove 134. The periphery of the dustproof plate 4 fits against the periphery of the operation port 121 on the front housing 12. The sliding block 211 is slidably disposed on the dustproof plate 4. By setting the dustproof plate 4, the sealing of the periphery of the operation port 121 can be improved, thereby preventing hair and other debris from entering the movement housing 13 through the operation port 121, improving the safety of product use and reducing the product failure rate.

[0076] In this embodiment, the dustproof plate 4 is provided with a second through hole 41 to allow the pin 212 and the trigger plate 222 to extend into the movement housing 13 through the second through hole 41.

[0077] Specifically, refer to Figure 5 The second through hole 41 includes a main hole 411 and a secondary hole 412. The secondary hole 412 is located on the front and rear sides of the main hole 411. The aforementioned pin 212 is correspondingly movably disposed in the side hole 412. When the sliding block 211 drives the pin 212 to slide, the pin 212 slides in the side hole 412. The position of the side hole 412 coincides with the position of the sliding hole 132 opened on the aforementioned movement housing 13 in the vertical direction, so as to allow the pin 212 to pass through the side hole 412 and the sliding hole 132 in sequence to connect with the push plate 23.

[0078] In this embodiment, the length of the side hole 412 in the sliding direction of the sliding block 211 is greater than the length of the main hole 411. This eliminates the need to design the opening length of the main hole 411 to be too large. The area of ​​the main hole 411 is sufficient to allow the power button 22 to move vertically. In turn, by reducing the area of ​​the second through hole 41, the amount of external dust entering the mechanism housing 13 can be reduced.

[0079] Preferably, the surface of the sliding block 211 of the dustproof plate 4 is a smooth plane so that the sliding block 211 is more stable when sliding. The material can be metal plate, plastic plate or other material plate.

[0080] By setting up the dustproof plate 4, not only is it dustproof, but it also avoids direct contact and friction between the sliding block 211 and the movement shell 13, which could easily cause wear on the movement shell 13, thus effectively reducing the subsequent maintenance cost of the product.

[0081] In this embodiment, refer to Figure 4 and 5 To further improve the stability of the dustproof plate 4 after assembly in the receiving groove 134 and to facilitate the assembly of the dustproof plate 4 on the movement housing 13, taking the receiving groove 134 as a rectangular groove as an example, the corresponding dustproof plate 4 is also a rectangular plate. At the four corners of the rectangle or other positions, there are mounting posts 135, and the corresponding positions of the dustproof plate 4 are provided with mounting holes 42. In this way, through the interlocking cooperation between the mounting posts 135 and the mounting holes 42, the ease of assembly of the dustproof plate 4 on the movement housing 13 and the stability effect after assembly can be improved.

[0082] 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 hair clipper, comprising a housing and a control switch slidably disposed on the housing, characterized in that, The housing includes a bottom shell, a front shell, and a core shell. The bottom shell and the front shell are detachably connected. The core shell is located between the two and connected to the bottom shell. The control switch is slidably mounted on the core shell. The front shell has an operating port corresponding to the position of the control switch. A dustproof plate for sealing the area around the operating port is provided between the core shell and the front shell. The control switch is slidably mounted on the dustproof plate.

2. The hair clipper according to claim 1, characterized in that, The surface of the movement housing is provided with a receiving groove, and the dustproof plate is correspondingly embedded in the receiving groove.

3. A hair clipper according to claim 2, characterized in that, The receiving groove is provided with a plurality of mounting feet, and the dustproof plate is provided with matching mounting holes. The dustproof plate is inserted into the mounting feet through the mounting holes to nest and cooperate with the receiving groove.

4. A hair clipper according to claim 1, characterized in that, A circuit board is provided between the movement housing and the bottom housing. The circuit board is provided with a trigger switch corresponding to the control switch. The dustproof plate is provided with a second through hole that allows the trigger switch to be triggered when the control switch slides. The movement housing is provided with a corresponding opening that is vertically coincident with the trigger switch.

5. A hair clipper according to claim 4, characterized in that, The control switch includes a speed adjustment key and a power button that is movable inside the speed adjustment key. The speed adjustment key includes a sliding block, a pin, and a push plate. The bottom of the sliding block is connected to the push plate through the pin. When the sliding block slides, it drives the push plate to move through the pin, so as to trigger the trigger switch through the push plate.

6. A hair clipper according to claim 5, characterized in that, The power button includes a pressing part and a trigger plate located at the bottom of the pressing part. The power button triggers the trigger switch through the trigger plate.

7. A hair clipper according to claim 6, characterized in that, The second through hole includes a main hole for accommodating the pressing part and side holes on both sides of the main hole, with the pins correspondingly and movably disposed in the side holes.

8. A hair clipper according to claim 7, characterized in that, The movement housing has sliding holes on both sides of the opening that correspond to the side holes and allow the pins to move through.

9. A hair clipper according to claim 1, characterized in that, The contact surface between the dustproof plate and the control switch is a smooth plane.

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