Electric scissors

Abstract

The utility model belongs to the technical field of scissors, and particularly relates to electric scissors. The utility model provides a pair of electric scissors, and aims to solve the problems of complex structure and difficulty in maintenance of the electric scissors in the prior art. The electric scissors comprise a shell, a static blade and a movable blade are arranged on the shell, the movable blade is rotationally connected to the shell, and a driving assembly for driving the movable blade to swing in a reciprocating mode relative to the static blade to achieve opening and closing of the electric scissors is further arranged in the shell. By adopting the design of eccentric wheel driving, complex accessories such as a crankshaft in the prior art are replaced, and the internal structure of the electric scissors is greatly simplified. The eccentric wheel is in direct contact with the first driving plate and the second driving plate, so that the intermediate transmission link is reduced, and the overall structure is more compact and simpler. Due to the fact that the structure is simplified, the disassembly and assembly processes of the electric scissors become easier, and the operation difficulty and time cost of maintenance personnel are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of scissors technology, specifically relating to an electric scissors. Background Technology

[0002] Electric scissors are scissors that can open and close automatically, eliminating the need for manual operation. They are driven by a motor, which greatly improves the efficiency of opening and closing the scissors and makes them widely used in various fields.

[0003] In existing electric scissors, the motor opens and closes the scissors via a crankshaft and other components. This type of drive assembly has a complex structure, high manufacturing cost, and is difficult to maintain. Utility Model Content

[0004] This utility model provides an electric scissor, which aims to solve the problems of complex structure and difficult maintenance of existing electric scissors.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An electric scissor includes a housing, on which a stationary blade and a movable blade are disposed, the movable blade being rotatably connected to the housing, and the stationary blade being fixed to the housing;

[0007] The housing is also equipped with a drive assembly that drives the moving blade to reciprocate relative to the stationary blade to achieve the opening and closing of the electric scissors. The drive assembly includes a rotating shaft rotatably connected to the housing, an eccentric wheel on the rotating shaft, and a first drive plate and a second drive plate respectively in contact with the eccentric wheel on the moving blade. The eccentric wheel is located between the first drive plate and the second drive plate. The eccentric wheel drives the moving blade to reciprocate by alternately contacting the first drive plate and the second drive plate.

[0008] A further improved solution: the axis of the eccentric wheel is set parallel to the axis of the rotating shaft.

[0009] Based on the above technical solution, the design of setting the eccentric wheel axis parallel to the shaft axis ensures that the eccentric wheel can smoothly contact the first and second drive plates during rotation, avoiding additional friction and wear caused by non-parallel axes. The parallel axis setting makes the driving process smoother, reducing noise and wear caused by vibration, and extending the service life of the electric shears. The parallel axis design optimizes the power transmission path from the shaft to the moving blade, reducing energy loss and improving the opening and closing efficiency of the electric shears. Due to the simpler structure and stable operation, maintenance personnel can more easily inspect and replace worn parts, reducing maintenance costs and time. The smooth contact between the eccentric wheel and the first and second drive plates reduces impact and friction between components, thereby enhancing the durability of the entire drive assembly.

[0010] A further improvement: a rolling bearing is provided between the rotating shaft and the housing.

[0011] Based on the above technical solution: rolling bearings, through the rolling of internal balls or rollers between the inner and outer rings, transform the potential sliding friction into rolling friction. This transformation significantly reduces frictional resistance, thereby reducing wear between the shaft and the housing. This not only extends the service life of the electric shears but also reduces heat and energy loss caused by friction, improving mechanical efficiency. Rolling bearings possess high precision and stability, ensuring the smoothness and accuracy of the shaft's rotation. This is crucial for electric shears, as precise opening and closing actions are key to ensuring effective cutting. By incorporating rolling bearings, vibration and noise during operation are effectively suppressed, improving overall performance and user experience. Rolling bearings typically have standardized dimensions and interchangeability, making installation and disassembly relatively simple. Using rolling bearings in the design of electric shears simplifies the structure of the drive components, reducing manufacturing and maintenance complexity. Furthermore, rolling bearings are relatively easy to lubricate and maintain, requiring only a small amount of lubricant for normal operation and providing lubrication for extended periods, further reducing maintenance costs. Rolling bearings can withstand large radial and axial loads, giving electric shears greater adaptability and stability when handling different cutting tasks. Meanwhile, some rolling bearings also have self-aligning properties, enabling them to operate normally even when the shaft centerline is tilted relative to the bearing housing bore centerline, further improving the reliability and durability of electric shears.

[0012] A further improvement: the rolling bearings shall be at least two in number.

[0013] Based on the above technical solution: Using at least two rolling bearings can more effectively support the shaft, making its rotation smoother. This design reduces vibration and noise caused by shaft wobble or misalignment, thereby improving the operating accuracy of the electric shears. This is particularly important for applications requiring high-precision shearing, such as precision machining or fine trimming. Two or more rolling bearings can share the load borne by the shaft, thus enhancing the load-bearing capacity of the electric shears. This means the electric shears can withstand greater shearing forces without being damaged by overload. This is highly advantageous for applications handling heavy materials or requiring long-term continuous operation. Rolling bearings themselves have high durability and reliability, and this advantage is further amplified when at least two are used. The coordinated work of multiple bearings can more effectively distribute wear and fatigue, thereby extending the service life of the electric shears. Furthermore, even if one bearing fails, the other bearing can still provide the necessary support, ensuring the electric shears can continue to operate, improving overall reliability.

[0014] A further improved solution: the eccentric wheel is fixed to the rotating shaft by a key connection; or, the eccentric wheel and the rotating shaft are an integral structure.

[0015] Based on the above technical solutions: Keyed connection is a traditional mechanical connection method that uses a key to fix the eccentric wheel and the shaft together, ensuring a stable and reliable connection. Keyed connections can withstand large torques and axial forces, making the eccentric wheel less prone to loosening or falling off during rotation. Keyed connections facilitate disassembly and reassembly, allowing for individual replacement of worn or damaged eccentric wheels or shafts, reducing maintenance costs. Maintenance does not require disassembling the entire drive assembly, improving maintenance efficiency. Keyed connections are suitable for eccentric wheels and shafts of different sizes and shapes, allowing designers to select appropriate connection methods and dimensions according to actual needs. The integrated structure machines the eccentric wheel and shaft into a single unit, making the entire drive assembly more compact and reducing installation space. The compact structure helps improve the overall rigidity and stability of the electric shears. The integrated structure eliminates the gaps and friction that may be caused by keyed connections, reducing vibration and noise.

[0016] A further improved solution: The housing is provided with a mounting shaft, the stationary blade is provided with a shaft hole that mates with the mounting shaft, and the stationary blade is fixed to the housing by screws.

[0017] Based on the above technical solution: the mating design of the mounting shaft and shaft hole allows for precise positioning of the stationary blade on the housing. This design reduces inaccurate cutting caused by installation deviations, improving the cutting accuracy of the electric shears. Fixing the stationary blade to the housing with screws ensures its stability during operation. This stable fixing method reduces the risk of the stationary blade loosening or falling off due to vibration or impact, improving the reliability and durability of the electric shears. The mating design of the mounting shaft and shaft hole simplifies the installation process of the stationary blade. Operators only need to align the shaft hole of the stationary blade with the mounting shaft on the housing and then tighten the screws to complete the installation, improving installation efficiency. When the stationary blade becomes worn or damaged, operators can easily disassemble and replace it with a new one. This design reduces maintenance costs and time, improving the ease of maintenance of the electric shears.

[0018] A further improved solution: the stationary blade includes a cutting edge, and the screw is disposed on one end of the stationary blade away from the cutting edge.

[0019] Based on the above technical solution: placing the screw at the end of the stationary blade furthest from the cutting edge effectively avoids potential damage to the cutting edge during screw installation. This design ensures the integrity and sharpness of the cutting edge, extending the service life of the stationary blade. The cutting edge is a crucial part of the electric shears for cutting operations, and its performance directly affects the cutting effect. Installing the screw away from the cutting edge helps maintain the original performance and cutting accuracy of the cutting edge, ensuring the stable operation of the electric shears. Placing the screw at the end of the stationary blade furthest from the cutting edge makes the installation process more intuitive and convenient. Operators can more easily position and secure the screw, improving installation efficiency. By installing the screw at the end furthest from the cutting edge, the stationary blade is more firmly fixed to the housing. This design enhances the stability of the stationary blade and reduces the risk of loosening or falling off due to vibration or impact.

[0020] A further improved solution: The moving blade is provided with a through hole that mates with the mounting shaft, and the moving blade is located between the housing and the stationary blade.

[0021] Based on the above technical solution: the through hole on the moving blade precisely matches the mounting shaft on the housing, ensuring accurate positioning of the moving blade during the shearing process. This design reduces inaccurate shearing caused by moving blade position deviation, improving the shearing accuracy of the electric shears. Guided by the mounting shaft, the moving blade can achieve smooth reciprocating motion between the housing and the stationary blade. This smooth motion helps reduce vibration and noise, improving the working efficiency and stability of the electric shears. The precise fit between the moving and stationary blades optimizes the shearing path. This design allows for more efficient material cutting, reduces energy loss during the shearing process, and improves shearing efficiency. The precisely positioned moving blade and stable shearing path ensure the flatness and smoothness of the sheared surface. This high-quality shearing effect meets users' high performance requirements for electric shears.

[0022] A further improved solution: Both the first drive board and the second drive board are integrally integrated with the moving blade.

[0023] Based on the above technical solutions: The integrated structure eliminates connection gaps or weak points between the first drive plate, the second drive plate, and the moving blade, thereby improving the overall strength and rigidity of the structure. This design helps resist external impacts and vibrations, ensuring stable operation of the cutting tool or electric cutting tool in harsh environments. In traditional split structures, the connection between the drive plate and the moving blade is often a potential point of failure. The integrated structure eliminates these connection points, reducing the possibility of failure and improving product reliability and durability. The integrated structure makes power transmission from the drive plate to the moving blade smoother, reducing energy loss caused by friction or loosening of the connection points. This design helps improve the working efficiency of the cutting tool or electric cutting tool and reduce energy consumption. The integrated structure allows the moving blade to respond faster, responding more quickly to the action of the drive plate. This design helps improve the cutting accuracy and flexibility of the cutting tool or electric cutting tool. The integrated structure simplifies the manufacturing process of the cutting tool or electric cutting tool because there is no longer a need to separately manufacture and assemble the drive plate and the moving blade. This design helps reduce production costs and improve production efficiency.

[0024] A further improved solution: The housing includes a first half and a second half, with the second half fixed to the second half by screws.

[0025] Based on the above technical solution: the screw connection allows the first and second halves of the housing to be easily assembled together without complex processes or equipment. This design reduces production costs and improves production efficiency. When the housing or internal components need repair or replacement, the screws can be easily removed to separate the two halves of the housing. This design facilitates quick access to internal components for maintenance personnel, reducing repair difficulty and time. The screws tightly securing the two halves of the housing together form a good sealing structure. This design helps prevent external contaminants such as dust and moisture from entering the electric scissors, improving the product's protection level and service life.

[0026] The beneficial effects of this utility model are as follows:

[0027] This invention, by employing an eccentric wheel drive design, replaces the complex crankshaft and other components of traditional technology, greatly simplifying the internal structure of the electric scissors. The direct contact between the eccentric wheel and the first and second drive plates reduces intermediate transmission links, resulting in a more compact and concise overall structure. Due to the simplified structure, the disassembly and assembly of the electric scissors become easier, reducing the operational difficulty and time costs for maintenance personnel. The simplified structure also means fewer potential points of failure, reducing maintenance frequency and costs.

[0028] The eccentric wheel achieves the reciprocating oscillation of the moving blade by alternately contacting the first and second drive plates. This process ensures direct and efficient power transmission, reducing energy loss in traditional transmission methods and improving the cutting efficiency and performance of electric shears.

[0029] The eccentric wheel drive design makes the oscillation of the moving blade smoother and more uniform, reducing vibration and noise. Stable operation helps improve the cutting accuracy and reliability of the electric shears. The direct contact between the eccentric wheel and the drive plate uses wear-resistant material, reducing wear caused by friction. This lowers the risk of performance degradation and failure due to wear.

[0030] The simplified structure and efficient drive system extend the overall lifespan of the electric scissors, reducing downtime and costs associated with frequent repairs or parts replacements. The simplified design also reduces the overall weight of the electric scissors, making them easier to carry and operate, and improving user comfort during extended use. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For users of ordinary skills in the art, other related drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of an electric scissors according to this utility model.

[0033] Figure 2 This is a schematic diagram of the internal structure of an electric scissors according to this utility model.

[0034] Figure 3 This is a schematic diagram of the moving blade in an electric scissors according to this utility model.

[0035] Explanation of the labels in the diagram:

[0036] 1-Housing; 2-Stationary blade; 3-Moving blade; 4-Shaft; 5-Eccentric wheel; 6-First drive plate; 7-Second drive plate; 8-Rolling bearing; 9-Mounting shaft. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model. All other embodiments obtained by users of the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0038] refer to Figures 1 to 3 An electric scissor includes a housing 1, on which a stationary blade 2 and a movable blade 3 are disposed. The movable blade 3 is rotatably connected to the housing 1, and the stationary blade 2 is fixed to the housing 1.

[0039] The housing 1 is further provided with a drive assembly for driving the moving blade 3 to reciprocate relative to the stationary blade 2 to realize the opening and closing of the electric scissors. The drive assembly includes a rotating shaft 4 rotatably connected to the housing 1. An eccentric wheel 5 is provided on the rotating shaft 4. A first drive plate 6 and a second drive plate 7 are provided on the moving blade 3, which respectively contact the eccentric wheel 5. The eccentric wheel 5 is located between the first drive plate 6 and the second drive plate 7. The eccentric wheel 5 drives the moving blade 3 to reciprocate by alternately contacting the first drive plate 6 and the second drive plate.

[0040] Specifically, the axis of the eccentric wheel 5 is parallel to the axis of the rotating shaft 4. A further improvement: a rolling bearing 8 is provided between the rotating shaft 4 and the outer casing 1. There are at least two rolling bearings 8. The outer ring of the rolling bearing 8 is fixed to the outer casing 1, and the inner ring of the rolling bearing 8 is fixed to the rotating shaft 4.

[0041] Wherein: the eccentric wheel 5 is fixed to the rotating shaft 4 by a key connection; or, the eccentric wheel 5 and the rotating shaft 4 are an integral structure. The eccentric wheel 5 may also be welded to the rotating shaft 4.

[0042] The housing 1 is provided with a mounting shaft 9, and the stationary blade 2 is provided with a shaft hole that mates with the mounting shaft 9. The stationary blade 2 is fixed to the housing 1 by screws. The mounting shaft 9 can be an integral part of the housing 1. The stationary blade 2 includes a cutting edge, and the screw is located at one end of the stationary blade 2 away from the cutting edge. The moving blade 3 is provided with a through hole that mates with the mounting shaft 9, and the moving blade 3 is located between the housing 1 and the stationary blade 2. A sleeve can also be provided on the moving blade 3, and the sleeve is an integral part of the moving blade 3. The sleeve is used to increase the connection strength between the moving blade 3 and the mounting shaft 9.

[0043] Specifically: the first drive plate 6 and the second drive plate 7 are both integrally formed with the moving blade 3. The outer shell 1 includes a first half and a second half, with the second half fixed to it by screws. The first and second halves can also be snapped onto the first half. The mounting shaft 9, the moving blade 3, the stationary blade 2, and the rotating shaft 4 can all be mounted on the first half. The rotating shaft 4 can be driven by a motor.

[0044] The working principle of this embodiment:

[0045] The eccentric wheel 5 is a specially shaped wheel whose geometric center does not coincide with its rotation center. This eccentric arrangement causes the distance between the outer edge of the eccentric wheel 5 and the fixed point to change periodically during rotation. When the shaft 4 drives the eccentric wheel 5 to rotate, the constantly changing distance between the outer edge of the eccentric wheel 5 and the rotation center generates a varying driving force when the outer edge of the eccentric wheel 5 contacts the first drive plate 6 or the second drive plate 7. The moving blade 3 is equipped with the first drive plate 6 and the second drive plate 7, which respectively contact the outer edge of the eccentric wheel 5. When the eccentric wheel 5 rotates to the position where it contacts the first drive plate 6, it pushes the first drive plate 6, thereby causing the moving blade 3 to swing to one side. Similarly, when the eccentric wheel 5 rotates to the position where it contacts the second drive plate 7, it pushes the second drive plate 7, causing the moving blade 3 to swing to the other side. As the eccentric wheel 5 continues to rotate, the moving blade 3 will reciprocate under the alternating drive of the first drive plate 6 and the second drive plate 7. This reciprocating oscillation is the opening and closing action of the electric scissors.

[0046] This utility model is not limited to the above-mentioned optional embodiments. Under the premise of non-contradiction, the various solutions can be combined arbitrarily. Anyone can derive other forms of products under the guidance of this utility model. However, no matter what changes are made in their shape or structure, all technical solutions that fall within the scope of the claims of this utility model are within the protection scope of this utility model.

Claims

1. An electric scissors, characterized by: The electric shears comprise a housing, a static blade and a dynamic blade, the dynamic blade is rotatably connected to the housing, and the static blade is fixed to the housing; The housing is further provided with a driving assembly for driving the dynamic blade to reciprocally swing relative to the static blade to open and close the electric shears, the driving assembly comprises a rotating shaft rotatably connected to the housing, an eccentric wheel arranged on the rotating shaft, and a first driving plate and a second driving plate arranged on the dynamic blade and respectively contacting the eccentric wheel, the eccentric wheel is located between the first driving plate and the second driving plate, and the eccentric wheel drives the dynamic blade to reciprocally swing by alternately contacting the first driving plate and the second driving plate.

2. The electric scissors according to claim 1, characterized in that: The axis of the eccentric wheel is parallel to the axis of the rotating shaft.

3. The electric scissors according to claim 1, characterized in that: A rolling bearing is arranged between the rotating shaft and the housing.

4. The electric scissors according to claim 3, characterized in that: The rolling bearing has at least two.

5. The electric scissors according to claim 1, characterized in that: The eccentric wheel is fixed to the rotating shaft by a key, or the eccentric wheel and the rotating shaft are in an integrated structure.

6. The electric scissors according to claim 1, characterized in that: The housing is provided with a mounting shaft, the static blade is provided with a shaft hole matched with the mounting shaft, and the static blade is fixed to the housing by a screw.

7. The electric scissors according to claim 6, characterized in that: The static blade comprises a blade part, and the screw is arranged at one end of the static blade away from the blade part.

8. The electric scissors according to claim 6, characterized in that: The dynamic blade is provided with a through hole matched with the mounting shaft, and the dynamic blade is located between the housing and the static blade.

9. The electric scissors according to claim 1, characterized in that: The first driving plate and the second driving plate are in an integrated structure with the dynamic blade.

10. The electric scissors according to claim 1, characterized in that: The housing comprises a first half and a second half, and the second half is fixed to the first half by a screw.

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