Electric scissors with independent fixedly-connected front cover

Abstract

The utility model discloses a pair of electric scissors with an independent fixedly-connected front cover, which comprises a shell, a power transmission mechanism with a gear shaft and a cutter body connected through a cutter shaft, and the independent fixedly-connected front cover used for stably connecting the gear shaft and the cutter shaft is arranged on the shell. The electric scissors with the independent fixedly-connected front cover are few in parts, simple in structure and convenient to disassemble and assemble, stable connection of the gear shaft and the cutter shaft is achieved through the fixedly-connected front cover, all-directional stability of a gear transmission mechanism, a cutter body and the like of the electric scissors can be achieved, after-sales maintenance is reduced or avoided, and the electric scissors are convenient to use. Transmission mechanisms of various different types of electric shears can be met, the shears body can be stably used in all directions, practicability and universality are good, and application is wide.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric scissors, and particularly relates to an electric scissors with an independently fixedly connected front cover. Background Art

[0002] During the use of existing electric scissors, when the shearing assembly is subjected to an external shearing force, it will generate left-right displacement, shaking, tooth skipping, etc. due to the force. At the same time, the shearing assembly is unevenly stressed, resulting in affected service life and reduced shearing effect.

[0003] In order to solve the tooth skipping problem, the applicant previously applied for a balanced force electric shearing tool with an anti-tooth skipping structure (publication date: 2022-11-08, publication number: CN217742370U), which includes a power assembly, a gear transmission assembly, and a shearing assembly. The gear transmission assembly is arranged on a gear bracket through a tooth shaft, and the shearing assembly is arranged on the gear bracket through a knife shaft and is driven to open and close by the gear transmission assembly. A balance connecting rod bridge is arranged outside the shearing assembly, and the gear bracket, the balance connecting rod bridge, the tooth shaft, and the knife shaft form a symmetric balanced force structure. For this balanced force electric shearing tool, the force in the direction opposite to the meshing of the shearing assembly and the gear transmission assembly is effectively reduced, completely solving the problems of easy bending deformation of the gear bracket and slipping and tooth skipping of the gear transmission assembly and the shearing assembly. The shearing assembly consists of two front and rear support stress beams, and the entire shearing tool is balanced in force in the front, rear, left, and right directions, making the operation smoother.

[0004] However, due to the large number of components in this structure, the disassembly and assembly are complex. At the same time, since the balance connecting rod bridge needs to be connected to the gear bracket, the application range is limited and it cannot meet the use of different types of electric scissors. At the same time, there are problems such as the inability to fully stabilize the gear transmission and blade shearing of the electric scissors and the need for subsequent maintenance. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems of the existing balanced force electric scissors with complex structure, many components, inconvenient disassembly and assembly, and inability to meet the use of different types of electric scissors. It provides an electric scissors with an independently fixedly connected front cover, which has few components, simple structure, convenient disassembly and assembly, can meet the use of a variety of different types of electric scissors, can achieve all-round stability of the gear transmission mechanism and the knife body of the electric scissors, and is free from after-sales maintenance.

[0006] The technical solution adopted by the utility model to achieve the purpose of the invention is: an electric scissors with an independent fixed front cover, including a housing, a power transmission mechanism with a gear shaft and a knife body connected by a knife shaft, and an independent fixed front cover for balancing the connection between the gear shaft and the knife shaft is arranged on the housing. The electric scissors with an independent fixed front cover, by setting an independent fixed front cover, realize the stable connection between the gear shaft and the knife shaft through the independent fixed front cover during the installation process, ensure that there will be no slipping, tooth jumping and other phenomena during the shearing movement of the knife body, and no shaking during the working process, which can ensure the stability of the entire electric scissors, and have good strength, reduce the setting of parts, have fewer parts, simple structure, and are more convenient to disassemble and assemble. Moreover, the independent fixed front cover can be applied to various types of electric scissors, and the electric scissors gear transmission mechanism and the knife body can be fully stabilized by the fixed front cover, which can reduce or avoid subsequent maintenance.

[0007] Preferably, the fixed front cover is provided with a balancing stabilizing rib inside, and the balancing stabilizing rib is integrally provided with the fixed front cover. In order to increase the strength of the fixed front cover, the fixed front cover is provided with a balancing stabilizing rib inside, and the balancing stabilizing rib is integrally processed with the fixed front cover, for example, it can be integrally formed by injection molding, or it can be die-casting, etc.

[0008] Preferably, a reinforcing piece is embedded inside the balancing and stabilizing rib. In order to improve the balancing strength, a reinforcing piece can be embedded inside the balancing and stabilizing rib. The reinforcing piece can be a metal piece, etc., which is used to increase the connection strength between the front cover and the gear shaft and the knife shaft, and provide a balancing force to ensure the stability of the knife body when the scissors are working.

[0009] Preferably, the fixed front cover is provided with a plurality of fixing holes. The fixing holes are provided on the fixed front cover to facilitate multi-directional fixed connection with the housing, thereby achieving all-round stabilization of the knife body.

[0010] Preferably, the fixed front cover is provided with a gear shaft bearing mounting hole and a knife shaft mounting hole that passes through both sides of the fixed front cover, and the gear shaft bearing mounting hole and the knife shaft mounting hole are respectively connected to the gear transmission mechanism and the knife shaft. The gear shaft bearing mounting hole is provided on the fixed front cover to facilitate the installation of the gear shaft transmission bearing so as to realize the rotation connection of the gear shaft, and the knife shaft mounting hole is provided to facilitate the installation of the knife shaft to realize the connection with the knife body, so as to realize the shearing movement of the knife body along the knife shaft.

[0011] Preferably, a reinforcement member is embedded inside the fixedly connected front cover; or the reinforcement member is embedded in the tool shaft mounting hole. The reinforcement member can be designed according to the actual application requirements of the scissors. For large-force electric scissors, the reinforcement member can be embedded inside the entire fixedly connected front cover; for electric scissors with less force, the reinforcement member can also be only embedded in the tool shaft mounting hole to increase the ability to bear the shearing force during the scissor process of the tool body. Of course, the reinforcement member can also be set in other shapes according to needs and embedded in the balance and stabilizing ribs to increase the load-bearing capacity.

[0012] Preferably, the tool body adopts a linkage double blade. The tool body includes a linkage blade with swinging external teeth and a linkage blade with meshing internal teeth. Tool shaft holes are respectively arranged on the linkage double blades; the linkage blade with swinging external teeth and the linkage blade with meshing internal teeth are respectively of an integral structure or a split structure. The tool body can be a linkage double blade structure. One of the linkage double blades with swinging external teeth meshes with the tooth part on the tooth shaft, and the other with meshing internal teeth also meshes with the tooth part on the tooth shaft, so as to realize the double blade linkage shearing function. The linkage blade with swinging external teeth and the linkage blade with meshing internal teeth are respectively of an integral structure or a split structure.

[0013] Preferably, the tool body adopts a moving blade with swinging teeth and a fixed blade. Tool shaft holes are respectively arranged on the moving blade and the fixed blade; the moving blade is of an integral structure or a split structure. As another preferred solution, the tool body can also be a single blade structure, that is, one moving blade and one fixed blade. The moving blade can be selected to be of an integral structure or a split structure.

[0014] Preferably, the power transmission mechanism includes a power component and a gear transmission mechanism. The axis of the power component is perpendicular to the axis of the machine shell and is arranged on one side of the machine shell to drive the gear transmission mechanism to rotate; or the power component is arranged inside the machine shell; or the power component is arranged along the axis of the machine shell at the rear of the gear transmission mechanism in the machine shell through a right-angle intersecting bevel gear transmission, and the gear transmission mechanism is driven to rotate by a right-angle intersecting bevel gear driven wheel. The power transmission mechanism specifically includes a power component and a gear transmission mechanism. The power component mainly includes a motor and a reducer, and the gear transmission mechanism can be a tooth shaft transmission or a combined transmission of bevel gears and tooth shafts. To meet the design needs of different types of electric scissors, the power component can be arranged on one side of the machine shell, or inside the machine shell, or between the machine shell and the gear transmission mechanism, and can be specifically arranged according to the needs of the electric scissors.

[0015] Preferably, the casing is provided with a handle structure; or the middle part of the casing is provided with a handle-like structure. The casing can adopt a structure where the casing and the handle are integrated and consistent, or a structure where the handle is arranged in the middle of the casing, a gear transmission mechanism is installed at the front of the casing, and a battery is installed at the rear of the casing. The power assembly can be installed inside the casing where the handle is located, or at the front of the casing.

[0016] Preferably, the casing includes an outer shell, a handle, a mounting bracket, and an upper cover. One end of the mounting bracket is provided with a bracket bearing mounting hole, and the other end is provided with a cutter shaft fixing hole. The upper cover is provided with a gear shaft passing hole corresponding to the bracket bearing mounting hole and a cutter shaft avoiding groove corresponding to the cutter shaft fixing hole. The fixed front cover and the upper cover are snap-connected to form a cutter body installation cavity. As another preferred solution, for the bamboo shear, the casing can specifically include an outer shell for installing the power assembly, an operating handle connected to the outer shell, a mounting bracket for installing the gear shaft and the cutter shaft, and an upper cover for cooperating with the fixed front cover to stabilize the cutter body.

[0017] Advantages of the present utility model: The electric scissors with an independent fixed front cover have few components, a simple structure, are convenient to disassemble and assemble, can achieve all-round stability of the gear transmission mechanism and the cutter body of the electric scissors, reduce or avoid after-sales maintenance, can meet the all-round stable use of the transmission mechanism and the cutter body of various different types of electric scissors, have good practicability and versatility, and are widely applied. Description of the Drawings

[0018] Figure 1 is an exploded structural schematic diagram of the electric scissors with an independent fixed front cover of the present utility model.

[0019] Figure 2 is an exploded structural schematic diagram of the electric scissors with an independent fixed front cover of the present utility model from another angle.

[0020] Figure 3 is a structural schematic diagram of the fixed front cover in the present utility model.

[0021] Figure 4 is another structural schematic diagram of the fixed front cover in the present utility model.

[0022] Figure 5 is a second structural schematic diagram of the electric scissors with an independent fixed front cover of the present utility model.

[0023] Figure 6 is Figure 5 a structural schematic diagram of the electric scissors with an independent fixed front cover from another angle in

[0024] Figure 7 is a structural schematic diagram of the electric scissors with an independent fixed front cover in Embodiment 2.

[0025] Figure 8 It is another perspective structural schematic diagram of the electric scissors with an independently fixed front cover in Embodiment 2.

[0026] Figure 9 It is the second structural schematic diagram of the electric scissors with an independently fixed front cover in Embodiment 2.

[0027] Figure 10 It is a structural schematic diagram of the electric scissors with an independently fixed front cover in Embodiment 3.

[0028] Figure 11 It is an exploded structural schematic diagram of the electric scissors with an independently fixed front cover in Embodiment 3.

[0029] Figure 12 It is a structural schematic diagram of the electric scissors with an independently fixed front cover in Embodiment 4.

[0030] Figure 13 It is the second structural schematic diagram of the electric scissors with an independently fixed front cover in Embodiment 4.

[0031] Figure 14 It is a structural schematic diagram of the electric scissors with an independently fixed front cover in Embodiment 5.

[0032] In the figure: 1. Fixed front cover, 11. Fixed hole, 12. Knife shaft installation part, 13. Knife shaft installation hole, 14. Cover body accommodation cavity, 15. Tooth shaft bearing installation hole;

[0033] 2. Machine shell, 21. Front cover installation structure, 22. Knife shaft fixing hole, 23. Fixing hole, 24. Outer shell, 25. Handle, 26. Installation bracket, 27. Upper cover, 27-1. Tooth shaft through hole, 27-2. Knife shaft avoidance groove, 28. Bracket bearing installation hole, 29. Trigger;

[0034] 3. Power assembly, 31. Motor, 32. Reducer, 34. Power supply interface;

[0035] 4. Gear transmission mechanism, 42. Tooth shaft, 43. Tooth part;

[0036] 5. Scissors assembly, 51. Knife body, 52. Knife shaft, 53. Linkage knife with swinging outer teeth, 54. Linkage knife with meshing inner teeth, 55. Moving knife, 56. Fixed knife, 57. Knife shaft hole;

[0037] 6. Balance and stability rib, 7. Reinforcement, 8. Tooth shaft transmission bearing, 9. Plain bearing, 10. Locking nut;

[0038] 20. Battery, 30. Operating rod. Detailed implementation manners

[0039] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Here, the schematic embodiments of the present utility model and the descriptions are used to explain the present utility model, but not to limit the present utility model.

[0040] Embodiment 1:

[0041] As shown in Figure 1 , Figure 2 , Figure 3 , an electric scissors with an independently fixed front cover includes a housing 2, a power transmission mechanism, and a scissor assembly 5. The power transmission mechanism includes a power assembly 3 and a gear transmission mechanism 4. A tooth shaft 42 is provided in the gear transmission mechanism. A knife shaft 52 and a knife body 51 are provided in the scissor assembly 5. A fixed front cover 1 for balancing and connecting the tooth shaft and the knife shaft is provided at the front end of the housing 2. The fixed front cover 1 is provided with a tooth shaft bearing mounting hole 15 and a knife shaft mounting hole 13. The fixed front cover 1 is detachably mounted at the front end of the housing 2 to achieve a full range of fixation for the gear transmission of the electric scissors and the blade cutting assembly, so as to reduce the number of subsequent repairs.

[0042] The power assembly 3 includes a motor 31 and a reducer 32. In this embodiment, the power assembly 3 is arranged on the side of the front part of the housing. In this embodiment, the housing 2 and the handle 25 are of an integral structure, that is, the housing is also the handle. The housing can be integral or split. Specifically, the split housing can be at the front section, middle section or rear section, and the position of the split housing can be selected according to different needs.

[0043] The gear transmission mechanism 4 includes a tooth shaft 42. The scissor assembly 5 includes a knife body 51 and a knife shaft 52.

[0044] A plurality of fixing holes 11 for fixing with the housing 2 are arranged along the periphery of the fixed front cover 1. A knife shaft mounting portion 12 is provided on the fixed front cover 1. A knife shaft mounting hole 13 is provided on the knife shaft mounting portion 12 for mounting the knife shaft.

[0045] The fixed front cover 1 is generally in a cover-like structure. A cover body accommodating cavity 14 is provided on the inner side where the fixed front cover 1 cooperates with the housing 2. A balance and stabilizing rib 6 is integrally provided inside the cover body accommodating cavity 14. A reinforcing member 7 is embedded inside the balance and stabilizing member 6. In this embodiment, the reinforcing member 7 and the balance and stabilizing rib 6 are arranged in an H-shaped connection structure. The balance and stabilizing rib 6 is arranged along the front and rear direction of the fixed front cover 1 and corresponds to the positions of the tooth shaft 42 in the gear transmission mechanism and the knife shaft 52 in the scissor assembly. The knife shaft mounting hole 13 penetrates through the balance and stabilizing rib 6 and the fixing member 7.

[0046] A gear shaft bearing mounting hole 15 is provided at one end of the balance and stability rib 6 away from the tool shaft mounting hole 13, and a gear shaft transmission bearing 8 is provided inside the gear shaft bearing mounting hole.

[0047] The fixed front cover 1 can be an injection molded part, or a metal or plastic processed part, etc., and can be made of various materials.

[0048] In this embodiment, the tool body 51 in the scissor assembly 5 uses a linkage double blade. A battery is built inside the machine shell 2. In another embodiment, the battery can also be connected to the machine shell in a pluggable manner.

[0049] The machine shell 2 and the handle are of an integral structure. In this embodiment, the machine shell is also the handle.

[0050] A front cover mounting structure 21 is provided at the front end of the machine shell 2. The front cover mounting structure 21 can be provided on the left side of the machine shell 2 or on the right side of the machine shell 2, and can be specifically arranged according to the orientation of the fixed front cover 1. In this embodiment, the front cover mounting structure 21 is provided on the left side of the machine shell 2. A tool shaft fixing hole 22 penetrating the machine shell 2 and a fixing hole 23 for mounting the fixed front cover 1 are provided on the front cover mounting structure 21. The fixing holes 23 are arranged in one-to-one correspondence with the fixing holes 11 on the fixed front cover 1.

[0051] In this embodiment, the power assembly 3 is arranged on the side surface of the machine shell 2 perpendicular to the axis of the machine shell 2. The tooth portion 43 on the gear shaft 42 cooperates with the tool teeth on the linkage double blade to drive the linkage double blade to perform a shearing motion.

[0052] The linkage double blade includes a linkage knife 53 with a swinging outer tooth and a linkage knife 54 with an engaging inner tooth. Knife shaft holes 57 are respectively provided on the linkage double blade.

[0053] During specific installation, the motor 31 and the reducer 32 are installed on the right side of the machine shell 2. The gear shaft 42 is connected to the reducer 32. The gear on the gear shaft 42 passes through the linkage knife with the engaging inner tooth, cooperates with the engaging inner tooth, and then meshes with the swinging outer tooth, and is then connected through the gear shaft transmission bearing 8, so as to drive the linkage double blade to perform a shearing motion.

[0054] The described tool shaft 52 passes through the tool shaft mounting hole 13 from the outside, i.e., the left side, of the fixedly-connected front cover 1 and is then fitted with the flat bearing gasket and the flat bearing 9, then passes through the tool shaft hole 57 on the linkage double knife, and finally passes through the tool shaft fixing hole 22 on the machine housing 2 and is fixed on the right side of the machine housing 2 by a lock nut 10. At this time, the fixedly-connected front cover 1 is covered on the front cover mounting structure 21 on the left side of the machine housing 2 by fastening a fastener through the fastening hole 11 on the fixedly-connected front cover and the front cover mounting structure 21, realizing the all-round fixation of the electric scissors gear transmission mechanism 4 and the scissors assembly 5. Since a balance and stability rib is integrally provided inside the fixedly-connected front cover 1, the limit fixation of the tooth shaft and the side of the tool shaft by the balance and stability rib not only avoids the phenomenon of tooth skipping during the working process of the scissors assembly, but also realizes the balanced setting of the shearing force, ensuring that there will be no shaking and displacement during use, enabling the scissors assembly to be balanced in force, having a long service life, and good shearing effect.

[0055] As Figure 4 shown, in another embodiment, the reinforcement 7 in the balance and stability rib 6 of the fixedly-connected front cover 1 is a single circular reinforcement, and the reinforcement 7 is embedded inside the balance and stability member 6 where the tool shaft mounting hole 13 is located, or the described reinforcement 2 can be set according to the shape of the inner cover accommodation cavity 14 of the fixedly-connected front cover, and the specific shape is not limited.

[0056] As Figure 5 、 Figure 6 shown, in another embodiment, the tool body adopts a moving knife 55 with swing teeth and a fixed knife 56. Tool shaft holes 57 are respectively provided on the moving knife 55 and the fixed knife 56, and the moving knife 55 and the fixed knife 56 are rotationally connected through the tool shaft 52 and the tool shaft hole 57. A flat bearing 9 is provided inside the fixed knife 56. The tooth shaft 42 cooperates with the swing teeth on the moving knife 55 with swing teeth to drive the moving knife to perform a shearing motion.

[0057] During specific installation, the motor 31 and the reducer 31 are installed on the right side of the machine housing 2. The tooth shaft 42 is connected to the reducer 32. The gear on the tooth shaft 42 meshes with the swing teeth, and then is rotationally connected to the fixedly-connected front cover 1 through the tooth shaft transmission bearing 8.

[0058] The described tool shaft 52 passes through the tool shaft mounting hole 13 from the outside, i.e., the left side, of the fixedly connected front cover 1 and passes through the plain bearing 9 to connect the moving blade 55 and the fixed blade 56. After the tool shaft 52 passes through the moving blade 55 and the fixed blade 56, it passes through the tool shaft fixing hole 22 on the housing 5 and is fixed on the right side of the housing 2 by a locking nut 10. At this time, the fixedly connected front cover 1 is covered on the front cover mounting structure 21 on the left side of the housing 2 by fastening with a fastener passing through the fixing hole 11 on the fixedly connected front cover and the front cover mounting structure 21, realizing the all-round fixation of the electric scissors gear transmission mechanism 4 and the scissors assembly 5. Since a balance and stability rib is integrally provided inside the fixedly connected front cover 1, the limiting fixation of the gear shaft and the side of the tool shaft by the balance and stability rib not only avoids the phenomenon of gear skipping during the operation of the scissors assembly, but also realizes the balanced setting of the shearing force, ensuring that there will be no shaking and displacement during use, enabling the scissors assembly to be balanced in force, having a long service life and good shearing effect.

[0059] Embodiment 2:

[0060] In Figure 7 、 Figure 8 In the embodiment shown, an electric scissors with an independent fixedly connected front cover includes a housing 2, a power transmission mechanism, and a scissors assembly 5. The power transmission mechanism includes a power assembly 3 and a gear transmission mechanism 4. A gear shaft 42 is provided in the gear transmission mechanism, and a tool shaft 52 and a tool body 51 are provided in the scissors assembly 5. A fixedly connected front cover 1 for balancing and connecting the gear shaft and the tool shaft is provided at the front end of the housing 2. The fixedly connected front cover 1 is provided with a gear shaft bearing mounting hole 15 and a tool shaft mounting hole 13. The fixedly connected front cover 1 is detachably mounted at the front end of the housing 2 to realize the all-round fixation of the electric scissors gear transmission and the blade shearing assembly, so as to reduce the number of subsequent repairs.

[0061] The power assembly 3 includes a motor 31 and a reducer 32. In this embodiment, the motor 31 and the reducer 32 are arranged inside the handle at the rear end of the bevel gear.

[0062] The gear transmission mechanism 4 includes a bevel gear (not shown in the figure) and a gear shaft 42. The scissors assembly 5 includes a tool body 51 and a tool shaft 52.

[0063] A plurality of fixing holes 11 for fixing with the housing 2 are provided along the periphery of the fixedly connected front cover 1 on the fixedly connected front cover 1. A tool shaft mounting portion 12 is provided on the fixedly connected front cover 1, and a tool shaft mounting hole 13 is provided on the tool shaft mounting portion 12 for realizing the mounting of the tool shaft.

[0064] The fixed front cover 1 described above is generally in a cover-like structure. An inner side of the fixed front cover 1 that cooperates with the housing 2 is provided with a cover body accommodation cavity 14. A balance and stability rib 6 is integrally provided inside the cover body accommodation cavity 14, and a reinforcement member 7 is embedded inside the balance and stability member 6. In this embodiment, the reinforcement member 7 and the balance and stability rib 6 are cooperatively arranged in an H-shaped connection structure. The balance and stability rib 6 is arranged along the front-back direction of the fixed front cover 1 and is arranged corresponding to the tooth shaft 42 in the gear transmission mechanism and the knife shaft 52 in the scissor assembly. The knife shaft mounting hole 13 penetrates through the balance and stability rib 6 and the reinforcement member 7.

[0065] At one end of the balance and stability rib 6 far from the knife shaft mounting hole 13, a tooth shaft bearing mounting hole 15 is provided, and a tooth shaft transmission bearing 8 is provided inside the tooth shaft bearing mounting hole.

[0066] The fixed front cover 1 can be an injection molded part, or a metal or plastic processed part, etc., and can be made of various materials.

[0067] In this embodiment, the knife body 51 in the scissor assembly 5 adopts a linkage double knife, and the battery 20 and the housing 2 adopt a plug-in connection. In this embodiment, a handle 25 is formed in the middle of the housing 2, and the housing adopts a split or integral structure.

[0068] A front cover mounting structure 21 is provided at the front end of the housing 2. The front cover mounting structure 21 is provided on the right side of the housing 2, and can be specifically arranged in cooperation according to the orientation of the fixed front cover 1. A knife shaft fixing hole 22 penetrating through the housing 2 is provided on the front cover mounting structure 21.

[0069] In this embodiment, the power assembly 3 is arranged inside the housing 2 along the axis of the housing. The bevel gear connected to the reducer meshes with the bevel gear provided on the tooth shaft to achieve transmission. The gear on the tooth shaft cooperates with the knife teeth on the linkage double knife to drive the linkage double knife to perform a shearing motion.

[0070] The linkage double knife includes a linkage knife 53 with swinging external teeth and a linkage knife 54 with meshing internal teeth. Knife shaft holes 57 are respectively provided on the linkage double knife. The linkage knife 53 with swinging external teeth in the linkage double knife can be an integral structure or a split structure.

[0071] During specific installation, the motor 31 and the reducer 32 are installed inside the housing 2. The bevel gear on the tooth shaft 42 meshes with the bevel gear on the reducer 32. The gear on the tooth shaft 42 passes through the linkage knife with meshing internal teeth, cooperates with the meshing internal teeth, then meshes with the swinging external teeth, and is then connected through the tooth shaft transmission bearing 8, thereby driving the linkage double knife to perform a shearing motion.

[0072] The described cutter shaft 52 passes through the cutter shaft fixing hole 22 on the housing 5 from the outside of the housing 2, that is, from the left side, then passes through the cutter shaft hole 57 on the linkage double cutter, and then passes through the plain bearing 9 to be connected to the cutter shaft mounting hole on the fixedly connected front cover 1, and is fixed on the right side of the fixedly connected front cover 1 through a locking nut 10. At this time, the fixedly connected front cover 1 is covered on the front cover mounting structure 21 on the right side of the housing 2 by passing a fastener through the fixing hole 11 on the fixedly connected front cover and fastening it to the front cover mounting structure 21, realizing the all-round fixation of the electric scissors gear transmission mechanism 4 and the scissors assembly 5. Since a balance and stability rib is integrally provided inside the fixedly connected front cover 1, and the tooth shaft and the side surface of the cutter shaft are fixed in a limiting manner through the balance and stability rib, it not only avoids the phenomenon of gear skipping during the working process of the scissors assembly, but also realizes the balanced setting of the shearing force, ensuring that there will be no shaking and displacement during use, enabling the scissors assembly to be stressed evenly, having a long service life and good shearing effect.

[0073] In another embodiment, the reinforcement 7 in the balance and stability rib 6 of the fixedly connected front cover 1 is a single circular reinforcement, and the reinforcement 7 is embedded inside the cutter shaft mounting hole 13, or the described reinforcement 2 can be set according to the shape of the inner cover accommodating cavity 14 of the fixedly connected front cover, and the specific shape is not limited.

[0074] As Figure 9 shown, in another embodiment, the scissors assembly adopts a moving knife 55 with a swinging tooth and a fixed knife 56. Knife shaft holes 57 are respectively provided on the moving knife 55 and the fixed knife 56, and the moving knife 55 and the fixed knife 56 are rotationally connected through the cutter shaft 52 and the knife shaft hole 57. A plain bearing 9 is provided inside the fixed knife 56. The tooth shaft 42 cooperates with the swinging tooth on the moving knife 55 with a swinging tooth to drive the moving knife to perform a shearing motion.

[0075] During specific installation, the motor 31 and the reducer 32 are installed inside the housing 2. The bevel gear on the tooth shaft 42 meshes with the bevel gear on the reducer 32, and the gears on the tooth shaft 42 swing and mesh, and then are connected through the tooth shaft transmission bearing 8, thereby driving the linkage double cutter to perform a shearing motion.

[0076] The described cutter shaft 52 passes through the cutter shaft fixing hole 22 on the housing 5 from the outside of the housing 2, i.e., the left side, then passes through the moving cutter 55 and the fixed cutter 56 and is connected, and then passes through the plain bearing 9 and is connected to the cutter shaft mounting hole on the fixedly-connected front cover 1, and is fixed by a locking nut 10 on the right side of the fixedly-connected front cover 1. At this time, the fixedly-connected front cover 1 is fastened to the front cover mounting structure 21 on the right side of the housing 2 by passing a fastener through the fixing hole 11 on the fixedly-connected front cover and fastening it, realizing the all-round fixation of the electric scissors gear transmission mechanism 4 and the scissors assembly 5. Since a balance and stability rib is integrally provided inside the fixedly-connected front cover 1, and the tooth shaft and the side of the cutter shaft are fixed in a limiting manner through the balance and stability rib, not only the phenomenon of tooth skipping during the working process of the scissors assembly is avoided, but also the balance setting of the shearing force is realized, ensuring that there will be no shaking and displacement during use, enabling the scissors assembly to be stressed evenly, having a long service life and good shearing effect.

[0077] Embodiment 3:

[0078] In Figure 10 , Figure 11 In the described embodiment, an electric scissors with an independent fixedly-connected front cover, which is also called a bamboo cutter, is used for shearing bamboo plants, and includes a housing 2, a power assembly 3, a gear transmission mechanism 4 and a scissors assembly 5. A fixedly-connected front cover 1 for connecting the balance tooth shaft and the cutter shaft is provided at one end (the left end or the right end) of the housing 2. The fixedly-connected front cover 1 is provided with a tooth shaft bearing mounting hole 15 and a cutter shaft mounting hole 13. The fixedly-connected front cover 1 is detachably mounted at one end of the housing 2 to realize the all-round fixation of the electric scissors gear transmission mechanism and the shearing assembly 5, so as to reduce the subsequent maintenance times.

[0079] The described housing 2 includes a housing shell 24, a handle 25, a mounting bracket 26 and an upper cover 27. The housing shell 24 is generally in a cylindrical structure. The mounting bracket 26 is perpendicularly arranged on the axis of the housing shell 24 at one end of the housing shell and extends away from the housing shell 24. One end of the mounting bracket 26 is provided with a bracket bearing mounting hole 28, and the other end is provided with a cutter shaft fixing hole 22.

[0080] The upper cover 27 is arranged in a shape-matching manner with the fixedly-connected front cover 1. The upper cover 27 is provided with a tooth shaft passing hole 27-1 corresponding to the bracket bearing mounting hole 28 and a cutter shaft avoidance groove 27-2 corresponding to the cutter shaft fixing hole 22. The upper cover 27 is connected to the mounting bracket 26, and the bracket bearing mounting hole 28, the tooth shaft passing hole 27-1 and the housing shell 24 are coaxially arranged.

[0081] The handle 25 is arranged on one side of the other end of the housing shell 24 and extends in the same direction as the mounting bracket 26. After the mounting bracket 26 and the handle 25 are fixedly connected, they together with the housing shell 24 form a frame-type structure.

[0082] The described power component 3 includes a motor 31 and a speed reducer 32. In this embodiment, the motor 31 and the speed reducer 32 are built inside the housing 24. A controller and a battery are also built inside the housing 24. A power interface 34 corresponding to the battery is provided on the housing 24 for charging the battery. In another embodiment, the controller can also be installed inside the handle 25. A trigger 29 is also provided at the handle 25.

[0083] The described gear transmission mechanism 4 includes a toothed shaft 42. The described scissor assembly 5 includes a blade body 51 and a blade shaft 52.

[0084] The upper cover 27 and the fixedly connected front cover 1 are snap-connected and form a blade body installation cavity inside. The scissor assembly 5 is arranged inside the blade body installation cavity. One end of the toothed shaft 42 is arranged inside the bracket bearing installation hole 28 and is connected to the speed reducer, and is driven to rotate by the motor speed reducer. The other end of the toothed shaft 42 passes through the toothed shaft through hole 27-1. The toothed part 43 on the toothed shaft 42 meshes with the blade body 51 and is rotatably connected to the fixedly connected front cover 1 through the toothed shaft transmission bearing 8 on the fixedly connected front cover 1.

[0085] A plurality of fixing holes 11 for fixing with the upper cover are arranged along the periphery of the fixedly connected front cover 1 on the fixedly connected front cover 1. A blade shaft installation part 12 is arranged on the fixedly connected front cover 1. A blade shaft installation hole 13 is arranged on the blade shaft installation part 12 for installing the blade shaft.

[0086] The fixedly connected front cover 1 is generally in a cover-like structure. A cover body accommodation cavity 14 is arranged on the inner side where the fixedly connected front cover 1 cooperates with the upper cover. A balance and stability rib 6 is integrally arranged inside the cover body accommodation cavity 14. A reinforcement 7 is embedded inside the balance and stability part 6. In this embodiment, the reinforcement 7 and the balance and stability rib 6 are arranged in an H-shaped connection structure. The balance and stability rib 6 is arranged along the front and back direction of the fixedly connected front cover 1 and corresponds to the positions of the toothed shaft 42 in the gear transmission mechanism and the blade shaft 52 in the scissor assembly. The blade shaft installation hole 13 penetrates through the balance and stability rib 6 and the reinforcement 7.

[0087] A toothed shaft bearing installation hole 15 is arranged at one end of the balance and stability rib 6 far from the blade shaft installation hole 13. A toothed shaft transmission bearing 8 is arranged inside the toothed shaft bearing installation hole.

[0088] The fixedly connected front cover 1 can be an injection molded part, or a metal or plastic processed part, etc., and can be made of various materials.

[0089] In this embodiment, the blade body 51 in the scissor assembly 5 adopts a linkage double blade.

[0090] The front cover installation structure 21 is arranged on the right side of the upper cover and can be specifically arranged according to the orientation of the fixedly connected front cover 1.

[0091] In this embodiment, the power assembly 3 is arranged inside the housing along the axis of the housing. The reducer is connected to the gear shaft and drives the gear shaft to rotate. The tooth part 43 on the gear shaft cooperates with the cutter teeth on the linkage double cutter to drive the linkage double cutter to perform a shearing motion.

[0092] The linkage double cutter includes a linkage cutter 53 with swinging external teeth and a linkage cutter 54 with meshing internal teeth. Knife shaft holes 57 are respectively arranged on the linkage double cutter. The linkage cutter 53 with swinging external teeth in the linkage double cutter can be of an integral structure or a split structure.

[0093] The knife shaft 52 passes through the knife shaft fixing hole 22 on the mounting bracket from the outside, i.e., the left side of the mounting bracket, then passes through the avoidance groove 27-2 on the upper cover, passes through the knife shaft hole 57 on the linkage double cutter. Plane bearings 9 are provided on both the inner sides of the upper cover 24 and the fixedly connected front cover 2, and are connected to the knife shaft mounting hole 13 on the fixedly connected front cover 1, and are fixed on the right side of the fixedly connected front cover 1 by a locking nut 10. At this time, the fixedly connected front cover 1 is fastened to the front cover mounting structure 21 on the right side of the upper cover through a fastener passing through the fixing hole 11 on the fixedly connected front cover 1, and the fixedly connected front cover 1 is covered on the front cover mounting structure 21 on the right side of the upper cover to complete the assembly.

[0094] In another embodiment, the mounting bracket 26, the upper cover 27, the scissor assembly 5 and the fixedly connected front cover 1 are arranged at the left end of the housing 24.

[0095] In another embodiment, the reinforcement 7 in the balance and stability rib 6 of the fixedly connected front cover 1 is a single circular reinforcement, and the reinforcement 7 is embedded inside the knife shaft mounting hole 13, or the reinforcement 2 can be arranged according to the shape of the inner cover accommodating cavity 14 inside the fixedly connected front cover, and the specific shape is not limited.

[0096] In another embodiment, the scissor assembly adopts a moving knife 55 with swinging teeth and a fixed knife 56. Knife shaft holes 57 are respectively arranged on the moving knife 55 and the fixed knife 56. The moving knife 55 and the fixed knife 56 are rotationally connected through the knife shaft 52 and the knife shaft hole 57. A plane bearing 9 is arranged inside the fixed knife 56. The gear shaft 42 cooperates with the swinging teeth on the moving knife 55 with swinging teeth to drive the moving knife to perform a shearing motion.

[0097] Embodiment 4:

[0098] In Figure 12In the illustrated embodiment, an electric scissors with an independently fixed front cover includes a housing 2, a power transmission mechanism, and a scissor assembly 5. The power transmission mechanism includes a power assembly 3 and a gear transmission mechanism 4. A tooth shaft 42 is provided in the gear transmission mechanism, and a knife shaft 52 and a knife body 51 are provided in the scissor assembly 5. A fixed front cover 1 for balancing and connecting the tooth shaft and the knife shaft is provided at the front end of the housing 2. Tooth shaft bearing mounting holes 15 and knife shaft mounting holes 13 are provided on the fixed front cover 1. The fixed front cover 1 is detachably mounted at the front end of the housing 2 to achieve all-round fixation of the gear transmission of the electric scissors and the blade cutting assembly, so as to reduce the number of subsequent repairs.

[0099] The power assembly 3 includes a motor 31 and a speed reducer 32. In this embodiment, the motor 31 and the speed reducer 32 are arranged between the bevel gear and the rear handle of the housing.

[0100] The gear transmission mechanism 4 includes a transmission gear and a tooth shaft 42. The scissor assembly 5 includes a knife body 51 and a knife shaft 52.

[0101] A plurality of fixing holes 11 for fixing with the housing 2 are provided along the periphery of the fixed front cover 1 on the fixed front cover 1. A knife shaft mounting portion 12 is provided on the fixed front cover 1, and a knife shaft mounting hole 13 is provided on the knife shaft mounting portion 12 for mounting the knife shaft.

[0102] The fixed front cover 1 is generally in a cover-like structure. A cover body accommodating cavity 14 is provided on the inner side where the fixed front cover 1 cooperates with the housing 2. A balance and stabilizing rib 6 is integrally provided inside the cover body accommodating cavity 14, and a reinforcing member 7 is embedded inside the balance and stabilizing member 6. In this embodiment, the reinforcing member 7 and the balance and stabilizing rib 6 are cooperatively arranged in an H-shaped connection structure. The balance and stabilizing rib 6 is arranged along the front-back direction of the fixed front cover 1 and corresponds to the positions of the tooth shaft 42 in the gear transmission mechanism and the knife shaft 52 in the scissor assembly. The knife shaft mounting hole 13 penetrates through the balance and stabilizing rib 6 and the fixing member 7.

[0103] A tooth shaft bearing mounting hole 15 is provided at one end of the balance and stabilizing rib 6 away from the knife shaft mounting hole 13, and a tooth shaft transmission bearing 8 is provided inside the tooth shaft bearing mounting hole.

[0104] The fixed front cover 1 can be an injection molded part, or a metal or plastic processed part, etc., and can be made of various materials.

[0105] In this embodiment, the knife body 51 in the scissor assembly 5 adopts a linkage double knife, and the battery is connected to the housing in a pluggable manner.

[0106] A front cover mounting structure 21 is provided at the front end of the housing 2. The front cover mounting structure 21 is provided on the right side of the housing 2 and can be specifically arranged according to the orientation of the fixed front cover 1. A tool shaft fixing hole 22 penetrating the housing 2 is provided on the front cover mounting structure 21.

[0107] In this embodiment, the power assembly is arranged at the rear of the gear transmission mechanism of the housing along the axis of the housing through bevel gear transmission at a right angle. The gear transmission mechanism is driven to rotate by a bevel gear driven wheel at a right angle. The power assembly 3 is arranged at the front of the housing 2 along the axis of the housing and is located behind the bevel gear connected to the reducer. The bevel gear on the reducer is engaged with the bevel gear on the tooth shaft to achieve transmission. The gear on the tooth shaft is engaged with the cutter teeth on the linkage double cutter to drive the linkage double cutter to perform a shearing motion.

[0108] The linkage double cutter includes a linkage cutter 53 with swinging external teeth and a linkage cutter 54 with meshing internal teeth. Tool shaft holes 57 are respectively provided on the linkage double cutter. The linkage cutter 53 with swinging external teeth in the linkage double cutter can be an integral structure or a split structure.

[0109] During specific installation, the motor 31 and the reducer 32 are arranged between the housing handle and the bevel gear. The bevel gear on the tooth shaft 42 is engaged with the bevel gear on the reducer 32. The gear on the tooth shaft 42 passes through the linkage cutter with meshing internal teeth and is engaged with the meshing internal teeth and then with the swinging external teeth, and then is connected through the tooth shaft transmission bearing 8, thereby driving the linkage double cutter to perform a shearing motion.

[0110] After the tool shaft 52 passes through the tool shaft fixing hole 22 on the housing 5 from the outside of the housing 2, that is, from the left side, the tool shaft 52 passes through the tool shaft hole 57 on the linkage double cutter, then passes through the plain bearing 9 and is connected to the tool shaft mounting hole on the fixed front cover 1, and is fixed by a lock nut 10 on the right side of the fixed front cover 1. At this time, the fixed front cover 1 is covered on the front cover mounting structure 21 on the right side of the housing 2 by fastening the fixed front cover through the fastening holes 11 on the fixed front cover with the front cover mounting structure 21.

[0111] The described cutter shaft 52 passes through the cutter shaft mounting hole 13 from the outside, i.e., the left side of the fixedly connected front cover 1, and then cooperates with the flat bearing gasket and the flat bearing 9, then passes through the cutter shaft holes 57 on the linkage double cutter, and finally passes through the cutter shaft fixing hole 22 on the machine housing 2 and is fixed on the left side of the machine housing 2 by a lock nut 10. At this time, a fastener passes through the fixing hole 11 on the fixedly connected front cover and is fastened to the front cover mounting structure 21, and the fixedly connected front cover 1 is covered on the front cover mounting structure 21 on the right side of the machine housing 2, realizing the all-round fixation of the electric scissors gear transmission mechanism 4 and the scissors assembly 5. Since a balance and stability rib is integrally provided inside the fixedly connected front cover 1, and the tooth shaft and the side of the cutter shaft are fixed in a limiting manner through the balance and stability rib, it not only avoids the phenomenon of tooth skipping during the operation of the scissors assembly, but also realizes the balanced setting of the shearing force, ensuring that there will be no shaking and displacement during use, enabling the scissors assembly to be balanced in force, having a long service life and good shearing effect.

[0112] In another embodiment, the reinforcement 7 in the balance and stability rib 6 of the fixedly connected front cover 1 is a single circular reinforcement, and the reinforcement 7 is embedded inside the cutter shaft mounting hole 13, or the described reinforcement 2 can be set according to the shape of the inner cover accommodating cavity 14 of the fixedly connected front cover, and the specific shape is not limited.

[0113] As Figure 13 shown, in another embodiment, the scissors assembly adopts a moving knife 55 with swinging teeth and a fixed knife 56. Knife shaft holes 57 are respectively provided on the moving knife 55 and the fixed knife 56, and the moving knife 55 and the fixed knife 56 are rotationally connected through the cutter shaft 52 and the knife shaft holes 57. A flat bearing 9 is provided inside the fixed knife 56. The tooth shaft 42 cooperates with the swinging teeth on the moving knife 55 with swinging teeth to drive the moving knife to perform a shearing motion.

[0114] During specific installation, the motor 31 and the reducer 32 are installed inside the machine housing 2. The bevel gear on the tooth shaft 42 meshes with the bevel gear on the reducer 32, and the gears on the tooth shaft 42 swing and mesh, and then are connected through the tooth shaft transmission bearing 8, thereby driving the moving knife to perform a shearing motion.

[0115] The cutter shaft 52 passes through the cutter shaft fixing hole 22 on the machine housing 2 from the outside, i.e., the left side of the machine housing 5, then passes through and connects the moving knife 55 and the fixed knife 56, and then passes through the flat bearing 9 and is connected to the cutter shaft mounting hole on the fixedly connected front cover 1, and is fixed on the right side of the fixedly connected front cover 1 by a lock nut 10.

[0116] At this time, the fastening member passes through the fastening hole 11 on the fixedly-connected front cover and is fastened to the front cover mounting structure 21, and the fixedly-connected front cover 1 is covered on the front cover mounting structure 21 on the right side of the housing 2, realizing the all-round fixation of the electric scissors gear transmission mechanism 4 and the scissors assembly 5. Since the balance and stability ribs are integrally arranged inside the fixedly-connected front cover 1, the side-limiting fixation of the tooth shaft and the knife shaft by the balance and stability ribs not only avoids the phenomenon of tooth skipping during the working process of the scissors assembly, but also realizes the balance setting of the shearing force, ensuring that there will be no shaking and displacement during use, enabling the scissors assembly to be evenly stressed, having a long service life and good shearing effect.

[0117] Embodiment 5:

[0118] In Figure 14 In the shown embodiment, an electric scissors with an independent fixedly-connected front cover, which is also called a sugarcane shear and is used for shearing sugarcane-like plants, has a technical solution basically the same as that of the bamboo shear in Embodiment 3, and the differences are as follows:

[0119] An independent operating rod 30 is further provided on the mounting bracket 26. The operating rod 30 extends towards the side of the mounting bracket 26 where the housing 24 is located. The operating rod 30 can be perpendicular to the mounting bracket 26 or inclined to the mounting bracket. The handle 25 and the trigger 26 are arranged at the free end of the operating rod 30. In addition, the controller can also be arranged inside the handle 25, and the power supply 20 can also be connected to the handle 25.

[0120] The electric scissors with an independent fixedly-connected front cover in the above embodiments can be widely applied to scenarios where the housing has an integral or split structure, and can also be applicable to different installation methods of the motor and the reducer. For example, the motor and the reducer are in the handle at the rear end of the bevel gear; the motor and the reducer are connected to the tooth shaft on the side; the motor and the reducer are at the front end of the handle at the rear end of the bevel gear (the battery is in the handle). At the same time, the battery can be built into the handle or connected to the battery in a pluggable manner. The shearing assembly can be a double-knife linkage or a structure with a moving knife and a fixed knife, and the blade and the oscillating tooth can be integrally designed or separately arranged. The controller of the electric scissors can be installed in any installable space of the scissors. Universal parts such as the knife shaft assembly can be freely combined with each other in various solutions. The housing can be reinforced with inserts or other required shapes.

[0121] The reinforcing member is embedded in the fixedly-connected front cover, so that the knife shaft mounting holes of the front cover and the knife shaft mounting holes of the housing or the bracket are passed through the blade, the plain bearing by the knife shaft, fastened with a locking nut, and locked by screws or anti-loosening tooth washers. The reinforcing member is embedded in the fixedly-connected front cover, so that the bearing mounting holes on the fixedly-connected front cover install the tooth shaft transmission bearing and are connected to the bearing retaining ring on the tooth shaft. The reinforcing member is embedded in the fixedly-connected front cover, and a plurality of fixedly-connected holes are distributed corresponding to the fixing holes of the housing and are connected by bolts, thereby forming an all-round stable working state of the blade.

[0122] The above specific embodiments are part of the specific embodiments of the present utility model. Other obvious technical solutions adopted by those skilled in the art based on the content disclosed in the claims and the specification of this application, including technical solutions that make any obvious substitutions and modifications to the embodiments described herein, are within the protection scope of the present utility model.

Claims

1. An electric scissors with an independently fixed front cover, comprising a housing (2), a power transmission mechanism with a gear shaft (42), and a knife body (51) connected via a knife shaft (52), characterized in that: An independent fixed front cover (1) for firmly connecting the gear shaft (42) and the knife shaft (52) is provided on the housing (2).

2. The electric scissors with an independently fixed front cover according to claim 1, characterized in that: The fixed front cover (1) is provided with a balancing and stabilizing rib (6) inside, and the balancing and stabilizing rib (6) and the fixed front cover (1) are provided in an integrated manner.

3. The electric scissors with an independently fixed front cover according to claim 1, characterized in that: The fixed front cover (1) is provided with a plurality of fixing holes (11); the fixed front cover (1) is provided with a gear shaft bearing mounting hole (15) and a knife shaft mounting hole (13) that passes through both sides of the fixed front cover (1); the gear shaft bearing mounting hole (15) and the knife shaft mounting hole (13) connect the gear transmission mechanism (4) and the knife shaft (52).

4. The electric scissors with an independently fixed front cover according to claim 3, characterized in that: A reinforcing piece (7) is embedded inside the fixed front cover (1); or the reinforcing piece (7) is embedded in the knife shaft mounting hole (13).

5. The electric scissors with an independently fixed front cover according to any one of claims 1 to 4, characterized in that: The knife body (51) adopts a linked double knife, and the knife body (51) comprises a linked knife (53) with swinging external teeth and a linked knife (54) with meshing internal teeth. The linked double knives are respectively provided with knife shaft holes (57); the linked knife (53) with swinging external teeth and the linked knife (54) with meshing internal teeth are respectively an integrated structure or a split structure.

6. The electric scissors with an independently fixed front cover according to any one of claims 1 to 4, characterized in that: The knife body (51) comprises a movable knife (55) and a fixed knife (56) with swinging teeth, and a knife shaft hole (57) is respectively provided on the movable knife (55) and the fixed knife (56); the movable knife (55) is of an integrated structure or a split structure.

7. The electric scissors with an independently fixed front cover according to any one of claims 1 to 4, characterized in that: The power transmission mechanism comprises a power assembly (3) and a gear transmission mechanism (4); the axis of the power assembly (3) is perpendicular to the axis of the casing (2) and is arranged on one side of the casing (2) to drive the gear transmission mechanism (4) to rotate; or the power assembly (3) is arranged inside the casing (2); or the power assembly (3) is arranged at the rear of the gear transmission mechanism (4) of the casing (2) along the axis of the casing (2) through right-angle intersecting bevel gear transmission, and the gear transmission mechanism (4) is driven to rotate by the right-angle intersecting bevel gear driven wheel.

8. The electric scissors with an independently fixed front cover according to claim 7, characterized in that: The housing (2) is provided with a handle structure; or the housing (2) is provided with a handle-type structure in the middle.

9. The electric scissors with an independently fixed front cover according to claim 7, characterized in that: The housing (2) comprises an outer shell (24), a handle (25), a mounting bracket (26) and an upper cover (27); one end of the mounting bracket (26) is provided with a bracket bearing mounting hole (28), and the other end is provided with a knife shaft fixing hole (22).

10. The electric scissors with an independently fixed front cover according to claim 9, characterized in that: The upper cover (27) is provided with a gear shaft through hole (27-1) corresponding to the bracket bearing mounting hole (28), and a knife shaft avoidance groove (27-2) is provided corresponding to the knife shaft fixing hole (22); the fixed front cover (1) and the upper cover (27) are snap-fitted and connected to form a knife body mounting cavity.

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