Electric hair cutter

Abstract

The invention relates to the technical field of hair clipper products, in particular to an electric hair clipper which comprises a machine shell and a control switch key arranged on the machine shell, the control switch key comprises a power key and a speed regulation key, the speed regulation key is arranged on the machine shell in a sliding mode to regulate the output power of the electric hair clipper, and the power key is integrated on the speed regulation key. The electric hair cutter can be opened or closed after moving relative to the speed regulation key, and the problem that an existing electric hair cutter is inconvenient to use and operate by personnel is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of hair clippers, and particularly to an electric hair clipper. Background Art

[0002] An electric hair clipper, as a commonly used hair trimming tool in daily life, mainly consists of a housing, an electromechanical component arranged in the housing, a control power switch, and a cutter head. The control power switch drives the cutter head to act through controlling the electromechanical component to realize the hair cutting function.

[0003] Currently, common electric hair clippers on the market include single-speed electric hair clippers, that is, only a power button is set, and the circuit of the electromechanical component is turned on and off by pressing the power button to start the electric hair clipper. The motor output power of its electromechanical component is fixed, and the running speed of the cutter head cannot be adjusted. Another is an adjustable-speed electric hair clipper, which has a speed regulation button in addition to the power button on the housing, and the output power of the electric hair clipper is adjusted through the separate speed regulation button. However, its disadvantages are as follows:

[0004] When a person operates to turn on the electric hair clipper or adjust its speed, there are problems of inconvenient operation for the person and relatively redundant surface structure of the housing. Summary of the Invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide an electric hair clipper, which solves the problem of inconvenient use and operation of the existing electric hair clipper for people.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is: an electric hair clipper, including a housing and a control power switch arranged on the housing. The control power switch includes a power button and a speed regulation button. The speed regulation button is slidably arranged on the housing to adjust the output power of the electric hair clipper. The power button is integrated on the speed regulation button and can be moved relative to the speed regulation button to turn on or off the electric hair clipper.

[0007] Furthermore, a through hole penetrates through the speed regulation button, and the power button is movably arranged in the through hole.

[0008] By adopting the above technical solution, the setting of the through hole ensures the stable pressing stroke of the power button and improves the integration degree after the combination of the two.

[0009] Furthermore, a circuit board is arranged in the housing and a trigger switch is arranged on the circuit board. The trigger switch includes a power switch, an acceleration switch, and a deceleration switch. The power switch is used to control the on and off of the electric hair clipper circuit. The acceleration switch and the deceleration switch are used to adjust the output power of the electric hair clipper. The acceleration switch and the deceleration switch are respectively located at both ends of the displacement direction of the speed regulation button, and the power switch is correspondingly arranged between the acceleration switch and the deceleration switch.

[0010] By adopting the above technical solution, the acceleration switch and the deceleration switch are placed at both ends, opposite to the sliding direction of the speed regulation key, which facilitates the speed regulation key to linearly slide into place and touch the acceleration switch or the deceleration switch. The power switch is arranged between the acceleration switch and the deceleration switch, corresponding to the position of the power key, which facilitates the power key to touch the power switch when pressed.

[0011] Furthermore, the power key includes a pressing part movably connected to the speed regulation key and a trigger plate arranged at the bottom of the pressing part. The trigger plate corresponds to the position of the power switch and is configured to trigger the power switch when the pressing part is pressed.

[0012] By adopting the above technical solution, the setting of the trigger plate facilitates directly conducting the pressing force to the power switch by the trigger plate, eliminating the mechanical transmission delay.

[0013] Furthermore, an opening for accommodating the movement of the trigger plate is provided on the housing.

[0014] By adopting the above technical solution, the setting of the opening facilitates the trigger plate to movably pass through it, and at the same time, it is also convenient to limit and guide the movement direction of the trigger plate.

[0015] Furthermore, the speed regulation key includes a sliding part slidably connected to the housing and a push plate arranged at the bottom of the sliding part. The push plate is located inside the housing, and when the sliding part slides, it synchronously drives the push plate to displace to trigger the acceleration switch or the deceleration switch.

[0016] By adopting the above technical solution, the push plate synchronously displaces inside the housing along with the sliding part, so that when the sliding part and the push plate slide on the housing, the acceleration switch or the deceleration switch can be triggered through the push plate.

[0017] Furthermore, the sliding part includes a sliding block and pins arranged at the bottom of the sliding block. Slots are provided on the push plate, and the sliding part is detachably connected to the push plate through the cooperation of the pins and the slots.

[0018] By adopting the above technical solution, the sliding part is adaptively connected to the push plate through the pins, which facilitates their free combination or separation, so that when a certain component is damaged, it can be maintained and replaced.

[0019] Furthermore, slide holes for accommodating the pins to freely slide along the displacement direction of the speed regulation key are provided on the housing.

[0020] By adopting the above technical solution, the setting of the slide holes restricts the pins to slide only along the set direction, preventing the speed regulation key from shaking when sliding, and playing a role of guiding and limiting.

[0021] Furthermore, an elastic reset structure is provided between the speed regulation key and the housing for resetting the speed regulation key after displacement.

[0022] By adopting the above technical solution, through the setting of the elastic reset structure, when an external force is used to push the speed regulation key to displace and touch the trigger switch, after the external force is withdrawn, the speed regulation key can automatically reset to the initial position, and then by touching the trigger switch multiple times, the upshift or downshift operation of the electric hair clipper is realized.

[0023] Furthermore, the elastic reset structure includes a reset plate, a guide block and a first elastic member. The reset plate is slidably arranged on the housing and is inserted with the pin so that the two are displaced synchronously. One side of the guide block is elastically connected to the housing through the first elastic member, and the other side forms an inclined wedge fit with the reset plate.

[0024] By adopting the above technical solution, the elastic reset structure realizes the closed-loop operation of "sliding - automatic reset" of the speed regulation key through the reset plate, the guide block and the first elastic member, solves the pain point that the traditional speed regulation switch must be manually reset, and its technical advantages are reflected in the following effects: when the user releases the speed regulation key instantaneously, the first elastic member pushes the guide block to move, and it uses the inclined wedge fit formed by the guide block and the reset plate to drive the speed regulation key to automatically return to the initial position, and the mechanical transmission structure is more stable.

[0025] Furthermore, V-shaped inclined surfaces are provided on the adjacent sides of both the reset plate and the guide block.

[0026] By adopting the above technical solution, by using the contact of the V-shaped inclined surfaces between the reset plate and the guide block, no matter the speed regulation key triggers the acceleration switch forward or moves downward to trigger the deceleration switch, it can realize the reset work after displacement under the elastic action of the first elastic member.

[0027] Furthermore, an avoidance notch is provided on the housing for accommodating the first elastic member and the guide block.

[0028] By adopting the above technical solution, the avoidance notch on the housing facilitates the accommodation of the first elastic member and the guide block, and further optimizes the product structure, making the assembly of each component of the product more compact.

[0029] Furthermore, fixing feet are provided on the push plate, and sliding grooves are formed on the circuit board. The fixing feet are correspondingly slidably arranged in the sliding grooves so that the push plate is slidably connected to the circuit board.

[0030] By adopting the above technical solution, the fixing feet and the sliding grooves constitute a secondary guide to enhance the displacement stability of the push plate.

[0031] Furthermore, a second elastic member for resetting after its displacement is provided on the power button, and both ends of the second elastic member are elastically loaded on the power button and the push plate respectively.

[0032] By adopting the above technical solution, the setting of the second elastic member ensures that the power button can quickly rebound and reset after being pressed and the external force is withdrawn.

[0033] Furthermore, positioning posts are provided on the push plate, and one end of the second elastic member is correspondingly nested on the positioning posts.

[0034] By adopting the above technical solution, the design of the positioning posts facilitates positioning the second elastic member on the push plate and improves the connection stability between the two.

[0035] Furthermore, the housing includes an outer shell and a movement housing provided inside the outer shell. The speed regulation key is correspondingly slidably provided on the movement housing, and an operation opening is provided at the position of the housing corresponding to the speed regulation key to allow the speed regulation key to slide.

[0036] By adopting the above technical solution, by providing a separate movement housing inside the outer shell for the speed regulation key to slide, the product sealing performance is effectively improved, and the operation opening facilitates operating the sliding of the speed regulation key from the outside of the housing.

[0037] Furthermore, a dust-proof plate is provided on the movement housing. The dust-proof plate is fitted and adapted to the bottom periphery of the operation opening, and the speed regulation key is slidably provided on the dust-proof plate.

[0038] By adopting the above technical solution, the dust-proof plate seals the periphery of the operation opening, thereby reducing or blocking broken hair from entering the interior of the machine body, effectively solving the problem that broken hair easily enters the existing hair clipper and is inconvenient to clean.

[0039] Compared with the prior art, the advantages of the present invention are as follows:

[0040] 1. In the present invention, compared with the traditional design of dispersing the power button and the speed regulation key, in this application, the power button is integrated on the speed regulation key. The user can seamlessly switch the power on / off and speed regulation functions with a single-handed operation, avoiding excessive finger displacement problems, especially adapting to blind operation of the product in the wet hand / holding state, effectively improving the convenience of product use.

[0041] 2. In the present invention, integrating the power button on the speed regulation key can reduce the number of openings for the power button and the speed regulation key on the surface of the housing, effectively reducing the risk of broken hair entering the housing, significantly improving the integrity of the device, and at the same time making the surface of the housing smoother, enhancing the smoothness and comfort when held by the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the structure of the hair clipper of the present invention.

[0043] Figure 2 It is an exploded view of the structure of the hair clipper of the present invention.

[0044] Figure 3 For the present invention Figure 2 Enlarged view of the structure at A in

[0045] Figure 4 For the present invention Figure 2 Enlarged view of the structure at B in

[0046] Figure 5 For the present invention Figure 2 is an enlarged view of the structure at position C in the present invention.

[0047] In the figure:

[0048] 1. Housing, 11. Bottom shell, 12. Front shell, 121. Operation port, 13. Movement housing, 131. Avoidance notch, 132. Slide hole, 133. Opening hole, 134. Accommodation groove, 135. Mounting foot.

[0049] 21. Speed regulation key, 21a. Through hole, 210. Sliding part, 211. Sliding block, 212. Insertion pin, 22. Power key, 221. Pressing part, 222. Trigger plate, 223. Second elastic member, 23. Push plate, 231. Slot, 232. Positioning post, 233. Through hole, 234. Fixed foot.

[0050] 3. Elastic reset structure, 30. V-shaped inclined plane, 31. First elastic member, 32. Guide block, 321. Mounting hole, 33. Reset plate, 331. First through hole.

[0051] 4. Dust-proof plate, 41. Second through hole, 411. Main hole, 412. Side hole, 42. Mounting hole.

[0052] 5. Circuit board, 51. Slide groove.

[0053] 6. Trigger switch, 61. Deceleration switch, 62. Acceleration switch, 63. Power switch. Specific embodiments

[0054] The present invention will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0055] Refer to Figure 1 and 2 , the electric hair clipper mainly consists of a housing 1, an electromechanical component, a control on / off key, and a moving cutter head. The electromechanical component is arranged in the housing 1 and is used to drive the moving cutter head to reciprocate. The control on / off key is arranged on the surface of the housing 1, and an operation signal is sent to the electromechanical component through the control on / off key, thereby starting the electric hair clipper or regulating the speed of the electric hair clipper.

[0056] Regarding the mechanical and electrical components of the electric hair clipper, since they are common components in this field, only a general introduction is provided here. The mechanical and electrical components mainly consist of components such as 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, a sensor, overload protection, etc. The transmission module mainly transmits the mechanical energy output by the motor to the cutter head to drive the cutter head to move. Its composition mainly includes a gear set, an eccentric wheel, a transmission shaft, and a bushing, etc. 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, each of the above modules may also include other structural components. For example, the power module also includes a heat dissipation frame for the motor, heat sinks, etc. Since it is a conventional existing design and has nothing to do with the inventive point of this application, no detailed description is provided.

[0057] In this embodiment, the housing 1 of the electric hair clipper usually consists of a bottom shell 11 and a face shell 12 covering the bottom shell 11. The mechanical and electrical components are correspondingly arranged in the cavity formed after the two are covered. The corresponding sliding component is slidably arranged on the face shell 12. The housing 1 of this embodiment can also adopt this structure.

[0058] 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 further includes a movement housing 13. The movement housing 13 is located between the bottom shell 11 and the face shell 12. It is combined with the bottom shell 11 by means of screws, adhesives, etc., and the above-mentioned mechanical and electrical components are limited in the placement cavity formed between the movement housing 13 and the bottom shell 11. The face shell 12 is installed on the bottom shell 11 and covers the movement housing 13. The speed adjustment key 21 is correspondingly slidably arranged on the movement housing 13, and an operation port 121 is provided on the face shell 12 corresponding to the position of the speed adjustment key 21, so as to facilitate operating the speed adjustment key 21 to slide on the movement housing 13 through the operation port 121.

[0059] Refer to Figure 1 and 2 As shown in, the control on / off key includes a power key 22 and a speed adjustment key 21. Both of them 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 provided on the circuit board 5. The speed adjustment key 21 is slidably arranged on the movement housing 13. When it slides in place on the movement housing 13, it will trigger the acceleration switch 62 or the deceleration switch 61, thereby adjusting the output power of the electric hair clipper to achieve the purpose of motor speed regulation. The power key 22 is integrated on the speed adjustment key 21 and can trigger the power switch 63 after moving relative to the speed adjustment key 21 to realize the start or stop of the motor.

[0060] In this embodiment, the type of the trigger switch 6 can be a capacitive touch switch, a resistive touch switch, a photoelectric switch / optical interrupter, a membrane switch, a piezoelectric switch, a mechanical micro switch, etc. As long as it can enable the power button 22 to trigger the power switch 63 to turn on or off after displacement, and ensure that after the speed control button 21 slides, it can trigger the acceleration switch 62 or the deceleration switch 61. The type of the trigger switch 6 can also be other types. It can be a mechanical contact start mode or a non-contact start mode, such as inductive start, magnetic induction start, etc., which will not be elaborated here.

[0061] In this embodiment, referring to Figure 2 , as an integrated combination method of the power-on key and the speed control key 21, a through hole 21a is provided inside the speed control key 21. The power button 22 is movably arranged inside the through hole 21a and can trigger the power switch 63 after displacing along the through hole 21a. The through hole 21a can be arranged at the central position inside the power button 22 or other positions. The two can be directly inserted and movably connected, or indirectly connected through other components. As long as the integrated setting of the two can be achieved, and after their respective displacements, the corresponding trigger switch 6 can be triggered. The power button 22 and the speed control key 21 can also be other structures, which will not be specifically elaborated here.

[0062] In this embodiment, referring to Figure 2 and 3 , the power switch 63, the acceleration switch 62, and the deceleration switch 61 can be directly integrated on the circuit board 5. Of course, they can also be installed at other positions through wires. As long as it is ensured that the acceleration switch 62 and the deceleration switch 61 are located in the sliding direction of the speed control key 21, and after the speed control key 21 slides in place on the movement housing 13, it can trigger the corresponding acceleration switch 62 or deceleration switch 61. The power switch 63 is located between the acceleration switch 62 and the deceleration switch 61, and the three are linearly arranged. The position of the power switch 63 corresponds to the position of the power button 22.

[0063] In this embodiment, referring to Figure 2 , the power button 22 includes a pressing portion 221 and a trigger plate 222 provided at the bottom of the pressing portion 221. The pressing portion 221 movably penetrates through the through hole 21a of the speed control key 21, and the trigger plate 222 penetrates through the movement housing 13 and corresponds to the position of the power switch 63 on the circuit board 5. After pressing the pressing portion 221, the trigger plate 222 descends to trigger the power switch 63, realizing the startup of the electric hair clipper.

[0064] In this embodiment, in order to avoid the situation where when the speed control key 21 moves, it synchronously drives the power key 22 to move, and then the trigger plate 222 cannot be opposite to the position of the power key 22, resulting in the need to first reset the speed control key 21 to turn off the power key 22 when the electric 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, and its length can ensure that when the speed control key 21 moves to the extreme position, the trigger plate 222 can trigger the power switch 63 when pressing the power key 22. Thus, through the rectangular trigger plate 222, the problem that the power switch 63 can be triggered by pressing the power key 22 when the speed control key 21 slides to any position can be solved.

[0065] In this embodiment, the trigger plate 222 has a rectangular structure, specifically a cuboid. It can be imagined that as long as the effect that the power switch 63 can be triggered by pressing the power key 22 when the speed control key 21 slides to any position can be achieved, its structure can also be circular, triangular prism or other shapes, and its shape is not limited to the rectangular structure, and its shape will not be enumerated one by one here.

[0066] Refer to Figure 2 and 4 On the movement housing 13, an opening 133 is provided at the position corresponding to the trigger plate 222. The setting of the opening 133 facilitates the movement of the trigger plate 222 on the movement housing 13 to trigger the power switch 63.

[0067] 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 portion 210 slidably connected to the movement housing 13 and a push plate 23 provided at the bottom of the sliding portion 210 and located inside the housing 1. When the sliding portion 210 slides, it synchronously drives the push plate 23 to displace to trigger the acceleration switch 62 or the deceleration switch 61.

[0068] In this embodiment, refer to Figure 2 and 4 On the surface of the movement housing 13 facing the housing 12, a receiving groove 134 is provided, and the sliding portion 210 is correspondingly slidably arranged in the receiving groove 134.

[0069] In this embodiment, as an embodiment of the sliding portion 210 driving the push plate 23 to displace synchronously, refer to Figure 2 The sliding portion 210 includes a sliding block 211 and front and rear side pins 212 provided at the bottom of the sliding block 211. At the positions corresponding to the two pins 212 on the insertion plate, a difference groove is provided, and the sliding plate realizes its synchronous movement with the push plate 23 through the cooperation of the pins 212 and the slot 231.

[0070] In this embodiment, a sliding hole 132 is provided in the movement housing 13 corresponding to the through position of the pin 212. The sliding hole 132 is provided in 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 slidably arranged in the sliding hole 132 correspondingly.

[0071] In this embodiment, the purpose of arranging the pins 212 on the front and rear sides of the bottom of the sliding block 211 is to facilitate providing space for the trigger plate 222 to optimize the precision of the composition between the components of the product.

[0072] In this embodiment, the function of the push plate 23 is to trigger the corresponding acceleration switch 62 or deceleration switch 61 after synchronously displacing with the sliding block 211. As a setting method of the push plate 23, it can be slidably arranged on the circuit board 5. Specifically, referring to Figure 2 、 3 and 4, the bottom of the push plate 23 is provided with fixing feet 234, and correspondingly, the circuit board 5 is provided with sliding grooves 51 that form a clearance fit with the fixing feet 234. The sliding grooves 51 extend along the moving direction of the sliding block 211 to allow the fixing feet 234 to slide along the sliding grooves 51. This design helps to improve the stability of the push plate 23 during displacement.

[0073] In this embodiment, a through hole 233 is provided at the central position of the push plate 23, and the lower end of the corresponding trigger plate 222 is correspondingly inserted therein to realize the combination between the power button 22 and the push plate 23, effectively improving the stability after their assembly.

[0074] In the above embodiment, the sliding block 211 and the push plate 23 move synchronously by inserting the pin 212 into the push plate 23. It can be imagined that as long as the push plate 23 can be driven to move synchronously when the sliding block 211 slides, the synchronous movement between the sliding block 211 and the push plate 23 can also be realized in other ways. It can be a mechanical contact type linkage, such as the above-mentioned pin 212, or a non-contact waterproof type, such as a magnetic attraction method, that is, magnetic substances that attract each other are provided on the sliding block 211 and the push plate 23, and the magnetic force is used to realize the synchronous drive of the push plate 23 when the sliding block 211 slides. Of course, there can be other ways, which will not be elaborated here.

[0075] Based on the above embodiment, in order to facilitate the automatic reset of the power button 22 after being pressed, a second elastic member 223 is further provided on the power button 22.

[0076] Preferably, as the specific setting of the second elastic member 223, the second elastic member 223 can be elastically loaded between the power button 22 and the push plate 23. When an artificial finger applies pressure to the pressing portion 221, the second elastic member 223 is elastically compressed. After the external force is withdrawn, the second elastic member 223 resets and pushes the pressing portion 221 to reset, realizing the reset work of the power button 22.

[0077] In this embodiment, the second elastic member 223 can be a compression spring, a spring, a torsion spring, or elastic rubber. As long as it can provide an elastic restoring force after the power button 22 is pressed, it can also be other components or other mechanisms. Taking the second elastic member 223 as a spring as an example below, its specific structure will be described;

[0078] Specifically, referring to Figure 2 and 4 , one, two, or more springs can be provided. Taking two springs as an example, the two springs are located on the front and rear sides of the trigger plate 222 (the front and rear sides in this text refer to the width direction of the electric hair clipper). The upper ends of the two springs are connected to the bottom of the pressing portion 221, and the lower ends of the two springs are connected to the push plate 23. Thus, the assembly of the springs is achieved.

[0079] In this embodiment, in order to improve the connection stability between the push plate 23 and the spring, positioning posts 232 can be provided at the positions of the push plate 23 corresponding to the springs. In this way, by sleeving the springs on the positioning posts 232, the installation stability of the springs can be improved. Similarly, positioning posts 232 can also be provided at the bottom of the pressing portion 221 to improve the assembly stability between it and the springs.

[0080] In this embodiment, the upper end of the spring is connected to the bottom of the pressing portion 221. Of course, it can be imagined that the spring can also be abutted against the side surface of the trigger plate 222, and the purpose of elastically supporting the power button 22 can also be achieved. For example, a protrusion is provided on the side surface of the trigger plate 222, and the spring is sleeved on the protrusion, and the above effect can also be achieved.

[0081] Based on the above embodiment, the opening 133 provided on the movement housing 13 is correspondingly located in the accommodation groove 134 of the movement housing 13, and the opening 133 also serves to accommodate the spring.

[0082] In this embodiment, the lower end of the spring is installed on the push plate 23. The advantage 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 portion 221, and the trigger plate 222 are displaced synchronously, the spring will only undergo elastic deformation in the vertical direction, thereby providing an elastic restoring force for the pressing portion 221. Of course, it can be imagined that the lower end of the spring is not provided on the push plate 23, but on the housing 1 or the circuit board 5, etc. As long as it can provide an elastic restoring force for the pressing portion 221 after pressing, the spring can also be provided at other positions, which will not be elaborated here.

[0083] Based on the above embodiment, in order for the speed control button 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 displacement of the speed control button 21.

[0084] Specifically, referring toFigure 2 , 4 Taking the elastic reset structure 3 on the movement housing 13 with 3 and 5 as an example, it includes a reset plate 33, a guide block 32 and a first elastic member 31. The reset plate 33 is arranged in the receiving groove 134 of the movement housing 13, and a first through hole 331 is provided inside it. The lower end of the pin 212 of the sliding block 211 sequentially passes through the first through hole 331 and the sliding hole 132 to form a plug connection with the push plate 23. At this time, when the sliding block 211 is displaced, it will drive the reset plate 33 to move synchronously through the pin 212. The guide block 32 and the first elastic member 31 are located on the front and rear sides of the receiving groove 134. The adjacent sides of the two guide blocks 32 form a wedge fit with the side surface of the reset plate 33. The mutually remote sides of the two guide blocks 32 are elastically abutted against the movement housing 13 through springs. In this way, the front and rear sides of the reset plate 33 are elastically tightened by the guide block 32 and the first elastic member 31. Due to the wedge fit between the guide block 32 and the reset plate 33, 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 relatively. During the movement of the reset plate 33, it will squeeze the guide block 32 to move along the width direction of the housing 1 through the wedge fit with the guide block 32. At this time, the first elastic member 31 is compressed. When the external force pushing the sliding block 211 is withdrawn, the first elastic member 31 resets, and drives the guide block 32 to reset and then push the reset plate 33 to the initial position. During the reset process of the reset plate 33, it drives the sliding block 211 to reset through the pin 212. Thus, the reset after the speed adjustment of the speed adjustment key 21 is realized, and multiple upshift operations or downshift operations are realized in this way.

[0085] In the above embodiment, the moving direction of the sliding block 211 is the length direction of the housing 1, and the elastic telescopic 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.

[0086] In this embodiment, as the wedge fit mode between the reset plate 33 and the guide block 32, V-shaped inclined surfaces 30 are provided on the adjacent sides of the reset plate 33 and the guide block 32. The advantage of its V-shaped inclined surface 30 is that whether the sliding block 211 triggers the acceleration switch 62 forward or moves backward to trigger the deceleration switch 61, it can realize the reset work after displacement under the elastic action of the first elastic member 31.

[0087] In this embodiment, the first elastic member 31 can be a spring, a compression spring, an elastic rubber, etc., as long as it can provide an elastic reset force for the guide block 32 and the reset block after displacement.

[0088] Refer to Figure 4, To optimize the product structure, an avoidance notch 131 is provided on the movement housing 13. The corresponding first elastic member 31 and the guide block 32 are correspondingly arranged in the avoidance notch 131. An installation hole 321 can be provided at the connection between the guide block 32 and the first elastic member 31 to facilitate the assembly between the first elastic member 31 and the guide block 32. Through the above design, the assembly accuracy of the dependent components of the product can be effectively improved.

[0089] In this embodiment, the elastic reset structure 3 includes a reset plate 33, a guide block 32, and a first elastic member 31. As long as it can reset the slider 211 after displacement to achieve the reset function of the speed adjustment key 21 after displacement, the elastic reset structure 3 can also be other component structures, mechanisms, or components. Its installation position is not limited to the movement housing 13. It may also be on the front shell 12 or the bottom shell 11, as long as its reset work can be achieved.

[0090] Based on the above embodiment, in order to further improve the sealing effect of the product and at the same time improve the smoothness of the slider 211 when sliding on the movement housing 13.

[0091] In this embodiment, referring to Figure 2 , a dust-proof plate 4 is provided between the upper end surface of the movement housing 13 and the front shell 12. The dust-proof plate 4 is correspondingly adapted to the shape of the accommodation groove 134 on the movement housing 13 and is embedded in the accommodation groove 134. The periphery of the dust-proof plate 4 is in contact with the periphery of the operation port 121 on the front shell 12. The slider 211 is correspondingly slidably arranged on the dust-proof plate 4. By providing the dust-proof plate 4, the sealing performance of the periphery of the operation port 121 can be improved, thereby preventing broken hair, etc. from entering the movement housing 13 through the operation port 121, improving the safety of product use, and reducing the failure rate of the product.

[0092] In this embodiment, a second through hole 41 is provided inside the dust-proof plate 4 to allow the pin 212 and the trigger plate 222 to extend into the movement housing 13 through the second through hole 41.

[0093] Specifically, referring to Figure 5 , the second through hole 41 includes a main hole 411 and a sub-hole 412. The sub-hole 412 is located on the front and rear sides of the main hole 411. The above-mentioned pin 212 is correspondingly movably arranged in the side hole 412. When the slider 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 movement housing 13 in the vertical direction to allow the pin 212 to sequentially penetrate the side hole 412 and the sliding hole 132 to be connected to the push plate 23.

[0094] 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. In this way, there is no need to design the opening length of the main hole 411 to be too large, and the area of the main hole 411 only needs to allow the vertical displacement of the power button 22. Furthermore, by reducing the area of the second through hole 41, the entry of external dust into the movement housing 13 can be reduced.

[0095] Preferably, the surface of the sliding block 211 where the dust-proof plate 4 is arranged is a smooth plane, so that the sliding block 211 slides more smoothly. The material can be a metal plate, a plastic plate or a plate of other materials.

[0096] By arranging the dust-proof plate 4, not only the dust-proof function is achieved, but also the problem that the sliding block 211 directly contacts and rubs against the movement housing 13, which is likely to wear the movement housing 13, is avoided, effectively reducing the subsequent maintenance cost of the product.

[0097] In this embodiment, referring to Figure 4 and 5 , in order to further improve the stability of the dust-proof plate 4 after being assembled in the accommodation groove 134 and facilitate the assembly of the dust-proof plate 4 on the movement housing 13, taking the accommodation groove 134 as a rectangular groove as an example, the corresponding dust-proof plate 4 is also a rectangular plate. At the four corners of the rectangle or other positions, there are mounting posts 135, and at the corresponding positions of the corresponding dust-proof plate 4, there are mounting holes 42. In this way, through the insertion and cooperation between the mounting posts 135 and the mounting holes 42, the convenience of assembling the dust-proof plate 4 on the movement housing 13 and the stable effect after assembly can be improved.

[0098] Although the preferred embodiments of the present invention have been described in detail above, it should be clearly understood that various changes and modifications can be made to the present invention for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electric hair clipper, comprising a housing and a control power switch provided on the housing, characterized in that, The control power switch includes a power button and a speed regulation button. The speed regulation button is slidably arranged on the housing to adjust the output power of the electric hair clipper. The power button is integrated on the speed regulation button and can be moved relative to the speed regulation button to turn on or off the electric hair clipper.

2. The electric hair clipper according to claim 1, characterized in that, A through hole penetrates through the speed regulation button, and the power button is movably arranged in the through hole.

3. The electric hair clipper according to claim 1, characterized in that, A circuit board and a trigger switch arranged on the circuit board are provided in the housing. The trigger switch includes a power switch, an acceleration switch, and a deceleration switch. The power switch is used to control the on / off of the electric hair clipper circuit. The acceleration switch and the deceleration switch are used to adjust the output power of the electric hair clipper. The acceleration switch and the deceleration switch are respectively located at both ends of the displacement direction of the speed regulation button, and the power switch is correspondingly arranged between the acceleration switch and the deceleration switch.

4. An electric hair clipper according to claim 3, wherein, The power button includes a pressing part movably connected to the speed regulation button and a trigger plate arranged at the bottom of the pressing part. The trigger plate corresponds to the position of the power switch and is configured to trigger the power switch when the pressing part is pressed.

5. An electric hair clipper according to claim 4, characterized in that, An opening for accommodating the movement of the trigger plate is formed on the housing.

6. The electric hair clipper according to claim 3, wherein, The speed regulation button includes a sliding part slidably connected to the housing and a pushing plate arranged at the bottom of the sliding part. The pushing plate is located inside the housing. When the sliding part slides, it synchronously drives the pushing plate to displace to trigger the acceleration switch or the deceleration switch.

7. An electric hair clipper according to claim 6, wherein, The sliding part includes a sliding block and pins arranged at the bottom of the sliding block. Slots are provided on the pushing plate. The sliding part is detachably connected to the pushing plate through the cooperation of the pins and the slots.

8. An electric hair clipper according to claim 7, characterized in that, A sliding hole for accommodating the free sliding of the pins along the displacement direction of the speed regulation button is provided on the housing.

9. The electric hair clipper according to claim 7, wherein An elastic reset structure is provided between the speed regulation button and the housing for resetting the speed regulation button after displacement.

10. A hair clipper according to claim 9, characterized in that, The elastic reset structure includes a reset plate, a guiding block, and a first elastic member. The reset plate is slidably arranged on the housing and is inserted into the pins to displace synchronously with them. One side of the guiding block is elastically connected to the housing through the first elastic member, and the other side forms a wedge fit with the reset plate.

11. A hair clipper according to claim 10, characterized in that, V-shaped inclined surfaces are provided on the adjacent sides of both the reset plate and the guiding block.

12. An electric hair clipper according to claim 10, characterized in that, An avoidance notch is provided on the housing for accommodating the first elastic member and the guiding block.

13. A hair clipper according to claim 6, characterized in that, Fixing feet are provided on the pushing plate, and sliding grooves are formed on the circuit board. The fixing feet are correspondingly slidably arranged in the sliding grooves so that the pushing plate is slidably connected to the circuit board.

14. A hair clipper according to claim 6, characterized in that, A second elastic member for resetting the power button after its displacement is provided on the power button. The two ends of the second elastic member are respectively elastically loaded on the power button and the pushing plate.

15. A hair clipper according to claim 14, wherein, A positioning post is provided on the pushing plate, and one end of the second elastic member is correspondingly nested on the positioning post.

16. A hair clipper according to any one of claims 1-15, characterized in that, The housing includes an outer shell and a movement housing arranged inside the outer shell. The speed regulation button is correspondingly slidably arranged on the movement housing. An operation opening is provided on the housing corresponding to the position of the speed regulation button to allow the speed regulation button to slide.

17. A hair clipper according to claim 16, wherein, A dust-proof plate is formed on the movement housing. The dust-proof plate is fitted and adhered to the periphery of the bottom of the operation opening, and the speed regulation button is slidably arranged on the dust-proof plate.

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