An electric hair clipper

Abstract

The utility model relates to hair trimming equipment technical field, especially for a kind of electric hair clipper, including shell (1) and the cutter head (2) installed on shell (1), power device and transmission assembly are arranged in shell (1), power device includes motor (4) and drive block, motor (4) is fixedly installed in shell (1), drive block is drivenly connected with the motor (4);Transmission assembly includes center shaft (301) and swing arm (3), swing arm (3) rotatably installed on the center shaft (301), swing arm (3) one end is drivenly connected with drive block;Cutter head (2) includes fixed knife holder and moving knife holder, fixed knife holder is fixedly installed on shell (1), moving knife holder is movably arranged on fixed knife holder, one end of swing arm (3) is fixedly connected with moving knife holder, moving knife holder relatively fixed knife holder does reciprocating cutting motion;Shell is also provided with damping device, damping device can reduce the vibration of electric hair clipper, improve the comfort of user.

Description

Technical Field

[0001] This utility model belongs to the technical field of hair trimming equipment, and in particular relates to an electric hair clipper. Background Technology

[0002] With the development of technology, electric hair clippers have become household appliances and are used in people's lives. Electric hair clippers are used to cut people's hair in an electric manner.

[0003] In existing technology, when a user uses a hair clipper, the interference or impact force generated by the rotation of the internal moving parts acts directly on the machine body, causing the outer shell of the hair clipper to vibrate. In addition, the shearing resistance generated during hair cutting will give the user's palm an impact force, causing the user's palm to shake, thus feeling stiff and uncomfortable, affecting the user's operation. Utility Model Content

[0004] The purpose of this utility model is to provide an electric hair clipper to solve the technical problem of excessive vibration during the use of hair clippers in the background art.

[0005] To achieve the above objectives, the specific technical solution of this utility model for an electric hair clipper is as follows: An electric hair clipper includes a housing and a blade mounted on the housing, with a power unit and transmission components installed inside the housing. The power unit includes a motor and a drive block. The motor is fixedly installed inside the housing, and the drive block is connected to the motor for driving. The transmission assembly includes a central shaft and a swing arm. The central shaft is fixedly installed inside the housing, and the swing arm is rotatably installed on the central shaft. One end of the swing arm is driven to be connected to a drive block, and the drive block drives the swing arm to swing back and forth along the central shaft. The cutter head includes a fixed cutter holder and a moving cutter holder. The fixed cutter holder is fixedly mounted on the housing, and the moving cutter holder is movably mounted on the fixed cutter holder. The end of the swing arm away from the drive block is fixedly connected to the moving cutter holder, and the moving cutter holder performs reciprocating cutting motion relative to the fixed cutter holder.

[0006] The clipper's housing also contains a battery and a power switch. The battery powers the motor, and the moving blade of the moving blade holder and the fixed blade of the fixed blade holder work together to complete the cutting. When using the hair clipper of this application, the operator can start the motor by pressing the power switch. The motor drives the drive block to rotate, and the drive block pushes the swing arm to swing back and forth along the central axis. At this time, the moving blade on the moving blade holder fixed on the swing arm moves back and forth above the fixed blade. The high-speed moving blade and the fixed blade work together to cut the hair.

[0007] Furthermore, the transmission assembly also includes a bearing. The swing arm has a mounting hole, the bearing is installed in the mounting hole, the inner ring of the bearing is sleeved on the central shaft, and the outer ring of the bearing is fixedly connected to the swing arm.

[0008] In order to reduce the vibration generated by the swing arm from being transmitted to the housing through the central shaft, a bearing is installed between the swing arm and the central shaft, and lubricating oil is applied to the bearing and the central shaft. During use, the vibration generated by the swing arm is first transmitted to the bearing, and then transmitted to the central shaft through the bearing. In this process, the bearing in the middle can effectively buffer the vibration generated by the swing arm, thereby reducing the transmission of the vibration generated by the internal swing arm to the external housing. In addition, the bearings on the swing arm can reduce the vibration or runout between the swing arm and the central shaft, improve the stability of the swing arm when rotating at high speed, and at the same time, the bearing transmission can significantly reduce the coefficient of friction between the central shaft and the swing arm, reducing energy loss and wear friction heat generation.

[0009] Furthermore, the fixed tool holder includes a fixed tool and a fixed tool seat, and the movable tool holder includes a movable tool and a movable tool seat. The fixed tool is fixedly mounted on the fixed tool seat, the fixed tool seat is fixedly mounted on the housing, and the movable tool is fixedly mounted on the movable tool seat. The movable tool and the fixed tool are arranged parallel to each other.

[0010] In this system, the fixed blade remains stationary, serving as the shearing reference plane, while the moving blade is driven by the swing arm to reciprocate at high speed. The high-speed moving blade works in conjunction with the fixed blade to complete the cutting.

[0011] Furthermore, a sliding plate is fixedly installed on the fixed tool holder, and a sliding groove is provided on the moving tool holder, with one end of the sliding plate slidably installed in the sliding groove.

[0012] In order to ensure the stability of the moving tool and the moving tool holder during the working process, the sliding plate is set as an arc plate with a smooth arc surface at the left end. The left end of the sliding plate abuts against the slide groove, that is, the sliding plate presses the moving tool holder against the fixed tool holder, so that the moving tool and the fixed tool are closely fitted. Moreover, the sliding plate can slide relative to each other in the slide groove without affecting the reciprocating linear motion of the moving tool. In addition, a torsion spring is also provided on the fixed blade holder. The torsion spring is fixedly connected to the right end of the sliding plate. The torsion spring presses the moving blade holder against the fixed blade holder through the elastic force, so that the moving blade and the fixed blade fit together to form a stable cutting surface. This ensures that the moving blade can still fit together with the fixed blade during high-speed movement, thus improving the stability of hair cutting.

[0013] Furthermore, the swing arm includes a mounting part and a connecting part. The mounting part is fixedly connected to the moving knife holder, and the connecting part is drivenly connected to the drive block.

[0014] Furthermore, the drive block includes a rotating shaft and an eccentric wheel. The rotating shaft is fixedly connected to the main shaft of the motor, and the eccentric wheel is fixedly installed on the rotating shaft. The connecting part is a U-shaped block, and the eccentric wheel and the U-shaped block are arranged on the same axis. When the eccentric wheel rotates, it can hit the inner wall of the U-shaped block.

[0015] The motor drives the rotating shaft to rotate, which in turn drives the eccentric wheel to rotate. When the eccentric wheel completes a full rotation cycle, the U-shaped block will also complete a reciprocating linear motion cycle, and the corresponding swing arm will also complete a cycle of reciprocating linear motion.

[0016] Furthermore, a vibration damping device is also provided inside the housing. The vibration damping device includes a buffer pad and an arc-shaped pressure plate fixedly installed inside the housing. The motor is fixedly installed on the buffer pad, and the arc-shaped pressure plate is fixedly installed inside the housing by bolts. A rotatable plastic-coated bearing is installed on the rotating shaft, and the outer shell of the plastic-coated bearing abuts against the arc-shaped pressure plate.

[0017] The buffer pad has a three-layer structure design, including a baffle, a rubber pad, and a fixing plate. The fixing plate is fixedly installed inside the housing, the baffle is fixedly connected to the bottom of the motor, and the rubber pad is between the baffle and the fixing plate. The three-layer buffer pad can disperse vibration waves through layered deformation, effectively reducing the transmission of motor vibration to the outer housing. In addition, the housing and the arc-shaped pressure plate of the plastic-coated bearing are both made of plastic. The plastic-coated bearing can absorb the vibration energy of the shaft. The arc-shaped pressure plate mainly reduces vibration indirectly by limiting the shaking of the plastic-coated bearing and the shaft. Therefore, the installation of the vibration damping device can effectively reduce the transmission of internal vibration to the outer housing.

[0018] Furthermore, there are two bearings arranged symmetrically to each other.

[0019] The symmetrical arrangement of two bearings can make the load on the bearings evenly distributed, reduce the probability of bearing failure caused by uneven loads, and improve the bearing's load capacity. When the bearings are subjected to radial and axial loads, symmetrical installation helps these loads to be evenly distributed inside the bearings, avoids the occurrence of local overload, and enhances the overall stability.

[0020] The electric hair clipper of this utility model has the following advantages: 1. The hair clipper of this application has a bearing installed between the swing arm and the central shaft, and lubricating oil is applied to the bearing and the central shaft. During use, the vibration generated by the swing arm is first transmitted to the bearing, and then transmitted to the central shaft through the bearing. In this process, the intermediate bearing can effectively absorb the impact generated by the swing arm, thereby reducing the transmission of internal vibration to the outer shell. In addition, the bearing on the swing arm can reduce the vibration or jump between the swing arm and the central shaft, improve the stability of the swing arm when rotating at high speed, and significantly reduce the coefficient of friction between the central shaft and the swing arm, thereby reducing energy loss and wear friction heat generation.

[0021] 2. The hair clipper of this application is equipped with a vibration damping device, which includes a buffer pad. The buffer pad has a three-layer structure design, including a baffle, a rubber pad, and a fixing plate. The fixing plate is fixedly installed inside the housing, the baffle is fixedly connected to the bottom of the motor, and the rubber pad is between the baffle and the fixing plate. The three-layer buffer pad can disperse vibration waves through layered deformation, effectively reducing the vibration of the motor transmitted to the outer housing and improving the user's comfort. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an electric hair clipper according to the present invention; Figure 2 This is an exploded view of an electric hair clipper according to the present invention; Figure 3 This is a front view of the structure of an electric hair clipper according to the present invention; Figure 4 This is a structural diagram of the internal structure of an electric hair clipper according to the present invention; Figure 5 This is a schematic diagram of the internal device of an electric hair clipper according to the present invention; Figure 6 This is a schematic diagram of the swing arm and central shaft structure of this utility model; Figure 7 This is a schematic diagram of the bearing structure of this utility model; The markings in the diagram are as follows: 1. Housing; 101. Power switch; 2. Cutting head; 201. Moving cutter; 202. Moving cutter holder; 203. Fixed cutter; 204. Fixed cutter holder; 205. Sliding plate; 206. Slide groove; 3. Swing arm; 301. Central shaft; 302. U-shaped block; 303. Mounting part; 304. Mounting hole; 4. Motor; 401. Rotating shaft; 402. Eccentric wheel; 403. Plastic-coated bearing; 5. Buffer pad; 6. Arc-shaped pressure plate; 7. Bearing; 701. Outer ring; 702. Inner ring; 8. Battery. Detailed Implementation

[0023] To better understand the purpose, structure, and function of this utility model, the electric hair clipper of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] like Figure 1-7 As shown, this utility model discloses an electric hair clipper, comprising a housing 1 and a blade 2 mounted on the housing 1. A power unit and a transmission assembly are installed inside the housing 1. The power unit includes a motor 4 and a drive block. The motor 4 is fixedly installed inside the housing 1, and the drive block is driven by the motor 4. The transmission assembly includes a central shaft 301 and a swing arm 3. The central shaft 301 is fixedly installed inside the housing 1, and the swing arm 3 is rotatably installed on the central shaft 301. One end of the swing arm 3 is driven to be connected to the drive block, and the drive block drives the swing arm 3 to swing back and forth along the central shaft 301. The cutter head 2 includes a fixed cutter holder and a moving cutter holder. The fixed cutter holder is fixedly mounted on the housing 1, and the moving cutter holder is movably mounted on the fixed cutter holder. The end of the swing arm 3 away from the drive block is fixedly connected to the moving cutter holder, and the moving cutter holder performs reciprocating cutting motion relative to the fixed cutter holder.

[0025] In the above scheme, the housing 1 of the hair clipper is also equipped with a battery 8 and a power switch 101. The battery 8 supplies power to the motor 4. The moving blade 201 of the moving blade holder and the fixed blade 203 of the fixed blade holder work together to complete the cutting. When using the hair clipper of this application, the operator can start the motor 4 by pressing the power switch 101. The motor 4 drives the drive block to rotate, and the drive block pushes the swing arm 3 to swing back and forth along the central axis 301. At this time, the moving blade 201 fixedly installed on the swing arm 3 moves back and forth above the fixed blade 203. The high-speed moving blade 201 and the fixed blade 203 work together to cut the hair.

[0026] In one embodiment, the transmission assembly also includes a bearing 7. The swing arm 3 has a mounting hole 304, the bearing 7 is installed in the mounting hole 304, the inner ring 702 of the bearing 7 is sleeved on the central shaft 301, and the outer ring 701 of the bearing 7 is fixedly connected to the swing arm 3.

[0027] In the above scheme, in order to reduce the vibration generated by the swing arm 3 from being transmitted to the housing 1 through the central shaft 301, a bearing 7 is installed between the swing arm 3 and the central shaft 301, and lubricating oil is applied to the bearing 7 and the central shaft 301. During use, the vibration generated by the swing arm 3 is first transmitted to the bearing 7, and then transmitted to the central shaft 301 through the bearing 7. In this process, the bearing 7 in the middle can effectively absorb the vibration generated by the swing arm 3. Applying lubricating oil to the bearing 7 can reduce the rotational friction of the swing arm 3, thereby reducing the transmission of the vibration generated by the internal swing arm 3 to the external housing 1.

[0028] In addition, the bearing 7 on the swing arm 3 can reduce the vibration or jump between the swing arm 3 and the central shaft 301, improve the stability of the swing arm 3 when rotating at high speed, and significantly reduce the coefficient of friction between the central shaft 301 and the swing arm 3, thereby reducing energy loss and wear friction heat generation.

[0029] In one embodiment, the fixed tool holder includes a fixed tool 203 and a fixed tool seat 204, and the movable tool holder includes a movable tool 201 and a movable tool seat 202. The fixed tool 203 is fixedly mounted on the fixed tool seat 204, the fixed tool seat 204 is fixedly mounted on the housing 1, and the movable tool 201 is fixedly mounted on the movable tool seat 202. The movable tool 201 and the fixed tool 203 are arranged parallel to each other.

[0030] In the above scheme, the fixed blade 203 remains stationary as the shearing reference plane, while the moving blade 201 is driven by the swing arm 3 to reciprocate at high speed. The high-speed moving blade 201 cooperates with the fixed blade 203 to complete the cutting.

[0031] In one embodiment, a sliding plate 205 is fixedly installed on the fixed tool holder 204, and a sliding groove 206 is provided on the movable tool holder 202. One end of the sliding plate 205 is slidably installed in the sliding groove 206.

[0032] In the above scheme, in order to improve the stability of the moving blade 201 and the moving blade holder 202 during the working process, the sliding plate 205 is set as an arc plate. The left end of the sliding plate 205 is a smooth arc surface. The left end of the sliding plate 205 abuts against the slide groove 206. That is, the sliding plate 205 presses the moving blade holder 202 against the fixed blade holder 204, so that the moving blade 201 and the fixed blade 203 are closely fitted. Moreover, the sliding plate 205 can slide relative to each other in the slide groove 206 without affecting the reciprocating linear motion of the moving blade 201. In addition, a torsion spring is provided on the fixed blade holder 204. The torsion spring is fixedly connected to the right end of the sliding plate 205. The torsion spring presses against the fixed blade holder 204 through the elastic moving blade holder 202, so that the moving blade 201 and the fixed blade 203 fit together to form a stable cutting surface, ensuring that the moving blade 201 can still maintain contact with the fixed blade 203 during high-speed movement, thus improving the stability of hair cutting.

[0033] In one embodiment, the swing arm 3 includes a mounting part 303 and a connecting part. The mounting part 303 is fixedly connected to the moving knife holder 202, and the connecting part is drivenly connected to the drive block.

[0034] In one embodiment, the drive block includes a rotating shaft 401 and an eccentric wheel 402. The rotating shaft 401 is fixedly connected to the main shaft of the motor 4, and the eccentric wheel 402 is fixedly installed on the rotating shaft 401. The connecting part is a U-shaped block 302. The eccentric wheel 402 and the U-shaped block 302 are arranged coaxially. When the eccentric wheel 402 rotates, it can impact the inner wall of the U-shaped block 302.

[0035] In the above scheme, the motor 4 drives the rotating shaft 401 to rotate, and the rotating shaft 401 drives the eccentric wheel 402 to rotate. When the eccentric wheel 402 rotates for a complete rotation cycle, the U-shaped block 302 will also complete a reciprocating linear motion cycle, and the corresponding swing arm 3 will also complete a cycle of reciprocating motion.

[0036] In one embodiment, a vibration damping device is also provided inside the housing 1. The vibration damping device includes a buffer pad 5 and an arc-shaped pressure plate 6 fixedly installed inside the housing 1. The motor 4 is fixedly installed on the buffer pad 5. The arc-shaped pressure plate 6 is fixedly installed inside the housing 1 by bolts. A rotatable plastic-coated bearing 403 is installed on the rotating shaft 401. The outer wall of the plastic-coated bearing 403 abuts against the arc-shaped pressure plate 6.

[0037] In the above scheme, the buffer pad 5 is a three-layer structure design, including a baffle, a rubber pad and a fixing plate. The fixing plate is fixedly installed inside the housing 1, the baffle is fixedly connected to the bottom of the motor 4, and the rubber pad is between the baffle and the fixing plate. The three-layer buffer pad 5 can disperse vibration waves through layered deformation, effectively reducing the vibration of the motor 4 transmitted to the outer housing 1. In addition, both the plastic-coated bearing 403 and the arc-shaped pressure plate 6 are elastic materials. The plastic-coated bearing 403 can absorb the vibration energy of the rotating shaft 401. The arc-shaped pressure plate 6 mainly reduces vibration indirectly by limiting the shaking of the plastic-coated bearing 403 and the rotating shaft 401. Therefore, the installation of the vibration damping device can effectively reduce the transmission of internal vibration to the outer shell 1.

[0038] In one embodiment, there are two bearings 7 arranged symmetrically to each other.

[0039] In the above scheme, the symmetrical arrangement of the two bearings 7 can make the load on the bearing 7 evenly distributed, reduce the probability of bearing 7 failure caused by uneven load, and improve the load capacity of the bearing 7. When the bearing 7 is subjected to radial and axial loads, the symmetrical installation helps these loads to be evenly distributed inside the bearing 7, avoids the occurrence of local overload, and enhances the overall stability.

[0040] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An electric hair clipper, characterized in that, It includes a housing (1) and a cutter head (2) mounted on the housing (1), wherein a power unit and a transmission assembly are provided inside the housing (1). The power unit includes a motor (4) and a drive block. The motor (4) is fixedly installed inside the housing (1), and the drive block is drivenly connected to the motor (4). The transmission assembly includes a central shaft (301) and a swing arm (3). The central shaft (301) is fixedly installed inside the housing (1). The swing arm (3) is rotatably installed on the central shaft (301). One end of the swing arm (3) is driven to be connected to the drive block. The drive block drives the swing arm (3) to swing back and forth along the central shaft (301). The cutter head (2) includes a fixed cutter holder and a moving cutter holder. The fixed cutter holder is fixedly installed on the housing (1), and the moving cutter holder is movably mounted on the fixed cutter holder. The end of the swing arm (3) away from the drive block is fixedly connected to the moving cutter holder, and the moving cutter holder performs reciprocating cutting motion relative to the fixed cutter holder.

2. The electric hair clipper according to claim 1, characterized in that, The transmission assembly also includes a bearing (7), and the swing arm (3) has a mounting hole (304). The bearing (7) is installed in the mounting hole (304), the inner ring (702) of the bearing (7) is sleeved on the central shaft (301), and the outer ring (701) of the bearing (7) is fixedly connected to the swing arm (3).

3. The electric hair clipper according to claim 1, characterized in that, The fixed tool holder includes a fixed tool (203) and a fixed tool seat (204), and the movable tool holder includes a movable tool (201) and a movable tool seat (202). The fixed tool (203) is fixedly installed on the fixed tool seat (204), the fixed tool seat (204) is fixedly installed on the housing (1), and the movable tool (201) is fixedly installed on the movable tool seat (202). The movable tool (201) and the fixed tool (203) are arranged parallel to each other.

4. An electric hair clipper according to claim 3, characterized in that, A sliding plate (205) is fixedly installed on the fixed tool holder (204), and a sliding groove (206) is provided on the moving tool holder (202). One end of the sliding plate (205) is slidably installed in the sliding groove (206).

5. An electric hair clipper according to claim 4, characterized in that, The swing arm (3) includes a mounting part (303) and a connecting part. The mounting part (303) is fixedly connected to the moving knife holder (202), and the connecting part is drivenly connected to the drive block.

6. An electric hair clipper according to claim 5, characterized in that, The drive block includes a rotating shaft (401) and an eccentric wheel (402). The rotating shaft (401) is fixedly connected to the main shaft of the motor (4). The connecting part is a U-shaped block (302). The eccentric wheel (402) and the U-shaped block (302) are arranged on the same axis. When the eccentric wheel (402) rotates, it can hit the inner wall of the U-shaped block (302).

7. An electric hair clipper according to claim 6, characterized in that, The housing (1) is also provided with a vibration damping device, which includes a buffer pad (5) and an arc-shaped pressure plate (6) fixedly installed in the housing (1). The motor (4) is fixedly installed on the buffer pad (5). The arc-shaped pressure plate (6) is fixedly installed in the housing (1) by bolts. A rotatable plastic-coated bearing (403) is installed on the rotating shaft (401). The outer shell of the plastic-coated bearing (403) abuts against the arc-shaped pressure plate (6).

8. An electric hair clipper according to claim 2, characterized in that, The bearings (7) are two in number and arranged symmetrically to each other.

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