Magnetic energy pruning shears

Abstract

The invention discloses magnetic energy pruning shears, and belongs to the technical field of gardening tools. The pruning shears comprise a magnetic driving assembly, a shear blade assembly, a transmission assembly and a control assembly. The magnetic force driving assembly is provided with permanent magnets which are opposite to each other, an iron stopper and a magnetic stopper are slidably arranged on the acting surfaces of the magnetic poles of the two magnets, variable magnetic force output can be achieved, the transmission assembly converts linear motion of the magnets into opening and closing motion of the shear blade assembly, and the control assembly is used for regulating and controlling sliding opening and closing of the stoppers. Battery power supply and large-force manual driving are not needed, the shearing force can be flexibly adjusted, a telescopic rod and a saw cutting assembly can be matched, and the device is suitable for pruning operation such as garden maintenance and fruit tree planting.

Description

Technical Field

[0001] This invention relates to the field of garden tool technology, and in particular to a magnetic pruning shears. Background Technology

[0002] In fields such as garden maintenance, fruit tree planting, and forestry management, pruning shears are indispensable tools. Existing pruning shears are mainly divided into two categories: traditional manual pruning shears and rechargeable electric pruning shears. Both have significant technical drawbacks: traditional manual pruning shears rely on manual power to directly drive the blades to close, requiring considerable physical effort when pruning thicker branches, resulting in low efficiency and the inability to directly prune high branches; while rechargeable electric pruning shears save labor, they rely on battery power, limiting their operating time. The charging process disrupts the continuity of work, and internal components such as the motor, gear set, and battery are prone to wear and aging, requiring additional maintenance costs and easily rendering the equipment unusable after damage.

[0003] Meanwhile, existing pruning shears have limited functionality, only capable of cutting. For thick branches that the blades cannot handle, additional tools such as saws are required, and for branches at higher elevations, a separate extension rod is needed, making operation cumbersome and inconvenient to carry. Furthermore, the cutting force of existing pruning shears is fixed and cannot be flexibly adjusted according to the thickness of the branches, easily resulting in damage to thin branches and inability to cut thick branches.

[0004] Therefore, we propose a new type of magnetic pruning shears. Summary of the Invention

[0005] The main objective of this invention is to propose a magnetic pruning shear that can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a magnetic pruning shear, comprising a magnetic drive component, a shearing blade component, a transmission component, and a control component;

[0007] The magnetic drive assembly includes a lower magnet, an upper movable magnet, a magnet shell, a fixed shell, an iron stopper, a magnetic stopper, a shaft, and a first spring. The lower magnet is fixed inside the fixed shell, and the upper movable magnet is slidably disposed inside the fixed shell and is opposite to the lower magnet. The magnet shell covers the outside of the lower magnet and the upper movable magnet. The iron stopper and the magnetic stopper are both slidably disposed on the shaft, and the shaft is fixed to the fixed shell. The iron stopper and the magnetic stopper are both located at the magnetic pole action surface between the lower magnet and the upper movable magnet. The first spring is sleeved on the shaft.

[0008] The shear blade assembly includes a fixed shear blade, a movable shear blade, and a fixing screw. The fixed shear blade is fixedly connected to the fixed shell, and the movable shear blade is hinged to the fixed shear blade by the fixing screw.

[0009] The transmission assembly connects the upper movable magnet and the movable shear blade, converting the linear motion of the upper movable magnet into the opening and closing motion of the movable shear blade;

[0010] The control component connects the iron stopper and the magnetic stopper, controlling their sliding opening and closing.

[0011] As a further description of the above technical solution, both the magnet shell and the fixed shell are made of materials that do not attract magnetic force, and the lower magnet and the upper movable magnet are permanent magnets with matched magnetic pole distribution.

[0012] As a further description of the above technical solution, the iron blocker is made of high-purity iron material, and the iron blocker has a double-door or single-door structure.

[0013] As a further description of the above technical solution, the magnetic blocking device is composed of a C1 auxiliary magnet, a C2 auxiliary magnet and a C3 iron block. The C1 auxiliary magnet is attached to the bottom of the C3 iron block and is opposite to the lower magnet. The C2 auxiliary magnet is attached to the top of the C3 iron block and is opposite to the upper movable magnet. The thickness of the C3 iron block is consistent with the thickness standard of the iron blocking device. The magnetic blocking device is a double-door or single-door structure.

[0014] As a further description of the above technical solution, the transmission assembly is a gear transmission mechanism, including:

[0015] A movable shaft is fixedly mounted on the top of the upper movable magnet, and a first rack is provided on the movable shaft;

[0016] The second spring is disposed between the upper movable magnet and the fixed shell, and is used to apply a downward pushing force to the upper movable magnet to assist the movable shear blade in opening and resetting.

[0017] A first gear is rotatably disposed within the fixed housing, and the first gear meshes with the first rack;

[0018] A second gear is rotatably disposed within the fixed housing, and the second gear meshes with the first gear;

[0019] A third gear is rotatably disposed within a fixed housing, the third gear meshing with a second gear, and the third gear meshing with a second rack disposed on a movable shear blade.

[0020] As a further description of the above technical solution, the transmission assembly is a direct-drive transmission mechanism, comprising:

[0021] A movable shaft is fixedly mounted on top of the upper movable magnet;

[0022] The third spring is disposed between the upper movable magnet and the fixed shell, and is used to apply a downward pushing elastic force to the upper movable magnet to assist the movable shear blade in opening and resetting.

[0023] A first fixed frame is fixedly mounted on the movable shear blade, and one end of the movable shaft is connected to the first fixed frame;

[0024] An adjusting nut mounted on the movable shaft allows for adjustment of the effective length of the movable shaft, thereby adjusting the initial opening angle of the movable shear blade relative to the fixed shear blade.

[0025] As a further description of the above technical solution, the control component includes a core wire, a core wire puller, a second fixing frame, a core wire, a core wire puller, and a core wire reel. One end of the core wire is connected to an iron stopper and a magnetic stopper, and the other end is connected to the core wire puller. The core wire puller is fixed on the second fixing frame, and the second fixing frame is fixedly connected to the fixing shell. The core wire connects the core wire puller to the core wire puller, and the core wire reel is used to store the core wire.

[0026] As a further description of the above technical solution, a telescopic rod assembly is also included. The telescopic rod assembly includes a telescopic rod, a locking pin, a locking rod, an outer screw fixing head, and an inner nut fixing sleeve. The inner nut fixing sleeve is disposed on a fixed shell, and the outer screw fixing head is disposed at the end of the telescopic rod and threadedly connected to the inner nut fixing sleeve. The telescopic rod is composed of multiple hollow steel pipes nested together. The locking pin and the locking rod are disposed on the steel pipes, and the core cable puller and the core cable winding wheel are disposed on the telescopic rod.

[0027] As a further description of the above technical solution, it also includes a sawing assembly, which includes a saw and an inner nut fixing sleeve. The inner nut fixing sleeve is disposed on the saw, and the saw is detachably connected to the outer screw fixing head through the inner nut fixing sleeve.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. This invention solves the problems of high labor consumption, low work efficiency, and inability to directly prune high branches using traditional manual pruning shears. It utilizes the repulsive magnetic force of like permanent magnets as the core driving force, allowing for the pruning of coarse branches without requiring excessive force from the operator, significantly reducing physical exertion and improving work efficiency. It can be equipped with a detachable telescopic rod assembly, enabling direct high-branch pruning without the need for additional extension tools.

[0030] 2. This invention solves the problems of rechargeable electric pruning shears relying on battery power, limited usage time, and disruption of work continuity due to charging delays. Furthermore, it addresses the issues of easily worn and aged components such as motors, gear sets, and batteries, resulting in high maintenance costs and equipment failure rates. This invention uses permanent magnets for power, eliminating the need for batteries and the limitations of charging delays and usage time, enabling continuous and uninterrupted operation. The absence of easily worn and aged components like motors and batteries significantly reduces maintenance costs, extends equipment lifespan, and decreases the rate of equipment failure.

[0031] 3. This invention solves the problems of existing pruning shears having limited functionality, only capable of cutting. For thick branches that the shear blades cannot handle, a saw is required; for branches at higher elevations, a separate extension rod is needed, making operation cumbersome and inconvenient to carry. In addition to basic shearing, this invention can be equipped with a detachable sawing component, allowing direct sawing of thick branches that the shear blades cannot reach, eliminating the need for a separate saw. Both the extension rod and the sawing component use quick-release threaded connections, making assembly and disassembly convenient, greatly simplifying operation and improving equipment portability.

[0032] 4. This invention solves the problem of existing pruning shears having a fixed cutting force, which cannot be flexibly adjusted according to the thickness of the branches, easily resulting in damage to thin branches and inability to cut thick branches. The present invention uses the sliding opening and closing of an iron stopper and a magnetic stopper to adjust the blocking area of ​​the magnetic pole's active surface, thereby achieving multi-level and precise adjustment of the cutting force. It can flexibly match the corresponding cutting force according to the thickness of the branches, ensuring the pruning effect on thick branches while avoiding excessive damage to thin branches. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of a gear transmission form of a magnetic energy pruning shear according to the present invention;

[0034] Figure 2 This is a schematic diagram of the overall structure of a direct-drive type of magnetic pruning shears according to the present invention.

[0035] Figure 3 This is a schematic diagram of the telescopic rod assembly of a magnetic pruning shear according to the present invention;

[0036] Figure 4 This is a schematic diagram of the cooperative structure of the sawing component and the telescopic rod component of a magnetic energy pruning shear according to the present invention.

[0037] Figure 5 This is a schematic diagram showing the distribution of magnetic poles in a fixed state between two magnets in the double-door iron stopper of a magnetic pruning shear according to the present invention.

[0038] Figure 6 This is a schematic diagram of the distribution of magnetic poles in the middle of the two magnets of the double-door magnetic stopper of the magnetic energy pruning shear of the present invention.

[0039] Figure 7 This is a schematic diagram of the double-door magnetic stopper structure of a magnetic pruning shear according to the present invention.

[0040] In the diagram: 1. Lower magnet; 2. Upper movable magnet; 3. Magnet shell; 4. Fixed shell; 5. Iron stopper; C5. Magnetic stopper; 6. Shaft; 7. First spring; 8. Movable shaft; 9. First rack; 10. Second spring; 11. Third spring; 12. First gear; 13. Second gear; 14. Third gear; 16. Second rack; 17. Fixed shear blade; 18. Fixed screw; 19. Core wire; 20. Core wire puller; 21. Second fixed frame; 22. Inner nut fixing sleeve; 23. Core wire; 24. Movable shaft; 25. Adjusting nut; 26. First fixed frame; 28. Telescopic rod; 29. ​​First steel pipe; 30. Second steel pipe; 31. Third steel pipe; 32. Lock; 33. Locking rod; 34. Outer screw fixing head; 35. Core wire puller; 36. Core wire reel; 37. Saw; 38. Inner nut fixing sleeve. Detailed Implementation

[0041] To make the technical means, creative features, and achieved objectives of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0042] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Please see Figures 1-7This invention provides a technical solution: a magnetic pruning shear, including a magnetic drive component, a shearing blade component, a transmission component, and a control component, and optionally an extension rod component and a sawing component; the magnetic drive component is the core power source of the pruning shear, and variable magnetic force is achieved through the sliding adjustment of the iron stopper and the magnetic stopper, driving the upper movable magnet to slide up and down, and then the transmission component converts the linear motion into the opening and closing motion of the shearing blade component, the control component realizes the start and stop of the magnetic drive component and the mode adjustment, the extension rod component realizes the high branch pruning, and the sawing component realizes the coarse branch sawing, and all components work together to complete the pruning operation.

[0045] Magnetic drive assembly: The magnetic drive assembly includes a lower magnet 1, an upper movable magnet 2, a magnet shell 3, a fixed shell 4, an iron blocker 5, a magnetic blocker C5, a shaft 6, and a first spring 7. The lower magnet 1 is fixed inside the fixed shell 4, and the upper movable magnet 2 is slidably disposed inside the fixed shell 4. The lower magnet 1 and the upper movable magnet 2 are opposite each other and form a repulsive magnetic force. The magnet shell 3 covers the outside of the lower magnet 1 and the upper movable magnet 2. Both the magnet shell 3 and the fixed shell 4 are made of materials that do not attract magnetic forces. The iron blocker 5 and the magnetic blocker C5 are slidably disposed on the shaft 6, and the shaft 6 is fixed on the fixed shell 4. The iron blocker 5 and the magnetic blocker C5 are both located at the magnetic pole action surface between the lower magnet 1 and the upper movable magnet 2. The first spring 7 is sleeved on the shaft 6 and is used to drive the iron blocker 5 and the magnetic blocker C5 to reset and close.

[0046] The iron blocker 5 is made of high-purity iron material, and its thickness is precisely set according to the repulsive force between the lower magnet 1 and the upper movable magnet 2: 1N (100g pressure) corresponds to a thickness of 0.013mm, 10N (1kg pressure) corresponds to 0.13mm, 100N (10kg pressure) corresponds to 1.3mm, 1000N (100kg pressure) corresponds to 13mm, and 3000N (300kg pressure) corresponds to 39mm. The thickness of the iron blocker 5 made of low-purity iron is greater than the above standard values. When the thickness of the iron blocker 5 is less than the standard value, residual repulsive force that has not been offset can be formed, thus achieving repulsive force adjustment. The iron blocker 5 can be designed as a double-door or single-door structure without usage restrictions.

[0047] The magnetic stopper C5 consists of a secondary magnet C1, a secondary magnet C2, and an iron block C3. The secondary magnet C1 is attached to the bottom of the iron block C3 and cooperates with the lower magnet 1. The secondary magnet C2 is attached to the top of the iron block C3 and cooperates with the upper movable magnet 2. The thickness of the secondary magnets C1 and C2 is 1mm, and their magnetic force is ≤1N, which is lower than the magnetic force of the lower magnet 1 and the upper movable magnet 2. Both of them are opposite to the corresponding main magnets, and reduce the repulsive force of the main magnets through repulsion. The thickness of the iron block C3 is consistent with the standard thickness of the iron stopper 5. It can also be made thinner, or the iron block C3 can be omitted and the secondary magnets C1 and C2 can be directly connected to form a pure magnetic stopper. The magnetic stopper C5 can be designed as a double-door or single-door structure without usage restrictions.

[0048] The lower magnet 1 and the upper movable magnet 2 are permanent magnets with compatible magnetic pole distributions, including two types of magnetic pole distributions: the first is a traditional magnetic pole distribution, with the bottom, left side, and front having S poles, and the top, right side, and rear having N poles; the second is a new type of magnetic pole distribution, with only the bottom having an S pole and the rest having N poles. Both types of permanent magnets are available in various shapes such as rectangle, square, cylinder, and arc, and can all achieve magnetic drive function.

[0049] Both the iron stopper 5 and the magnetic stopper C5 have eight sliding operating modes, and the magnetic force is changed by adjusting the blocking area of ​​the magnetic pole action surface:

[0050] Mode 1: 100% fully open, the blocker is completely out of the magnetic pole action surface, with no obstruction;

[0051] Mode 2: 100% completely closed, the blocker fully enters the magnetic pole action surface, completely blocking the circuit;

[0052] Mode 3: 50% occlusion, with partial insertion of the blocker, resulting in 50% occlusion area that is evenly distributed;

[0053] Mode 4: Gradually open from 50% to 100%, with the obstructed area continuously decreasing from 50% to 0%;

[0054] Mode 5: Gradually close from 50% to 100%, with the occlusion area continuously increasing from 50% to 100%;

[0055] Mode 6: Gradually open from 1% to 50%, with the occlusion area continuously decreasing from 99% to 50%;

[0056] Mode 7: Gradually closing from 1% to 50%, with the occlusion area continuously increasing from 1% to 50%;

[0057] Mode 8: Parameter adjustment is 100% off. The magnetic force is adjusted by the thickness of the iron stopper 5 or the magnetic force of the magnetic stopper C5.

[0058] The iron blocker 5 achieves eight variable magnetic force functions through the aforementioned eight modes. Its core principle is to convert the repulsive force of the main magnet into an attractive force between the magnet and the iron, achieving a balance between repulsive and attractive forces through thickness matching. The magnetic blocker C5 also achieves eight variable magnetic force functions through the aforementioned eight modes. Its core principle is to achieve gradient adjustment of the main magnet's repulsive force through the repulsive interaction between the secondary magnet and the main magnet. Specifically:

[0059] Eight functional modes of the iron stopper 5

[0060] The first function is that the iron stopper completely exits the working area between the two magnets, without any obstruction, achieving 100% full opening. The two magnets are magnetic poles of the same name, naturally repelling each other. When there is no obstruction, the repulsive force reaches its maximum value, presenting a state of strong mutual repulsive magnetic force.

[0061] The second function: The iron blocker completely closes between the two magnets, completely blocking the magnetic pole action surface and achieving 100% complete closure. The iron blocker transforms the repulsive force between the two magnets into the attractive force between the two magnets on the iron. The original mutual repulsion is transformed into a strong mutual attraction, and the attractive force reaches its maximum value.

[0062] The third function: The iron blocking part is inserted between the two magnets, blocking 50% of the magnetic pole action surface. The blocked area and the unblocked area are evenly distributed. The unblocked area maintains the repulsive force of the same magnetic pole of the magnet, while the blocked area generates the attractive force of the magnet on the iron. The two are equal in size and opposite in direction, and the repulsive force and attractive force are balanced, so the two magnets do not interact.

[0063] The fourth function: The iron blocker opens from 50% to 60% to 70% to 80% to 90% to 100%. The iron blocker gradually moves out from between the two magnets from a half-blocked state. The blocking area continuously decreases from 50% to 0%. As the blocking area decreases, the attraction of the magnet to the iron gradually weakens, and the repulsive force of the like magnetic poles gradually becomes dominant, eventually reaching the maximum repulsive force. Overall, it presents a continuous change in which the mutual repulsive force gradually increases.

[0064] The fifth function: The iron blocker is closed from 50% to 100%. The iron blocker is gradually inserted between the two magnets from a half-blocking state. The blocking area continuously increases from 50% to 100%. As the blocking area increases, the attraction of the magnet to the iron gradually increases, and the repulsion of the like magnetic poles is gradually canceled out, eventually reaching the maximum attraction. The whole shows a continuous change in the mutual attraction gradually increasing.

[0065] The sixth function: The iron blocker opens from 1% to 10% to 20% to 30% to 40% to 50%. The iron blocker gradually moves out from between the two magnets from near complete closure. The blocking area continuously decreases from 99% to 50%. In the initial state, the attraction is dominant. As the blocking area decreases, the attraction gradually weakens and the repulsion gradually strengthens. Finally, when it is 50% open, it reaches a force balance. The overall result is a continuous change in which the mutual attraction gradually decreases.

[0066] The seventh function: The iron blocker closes from 1% to 10% to 20% to 30% to 40% to 50%. The iron blocker is gradually inserted between the two magnets from almost fully open. The blocking area continuously increases from 1% to 50%. In the initial state, the repulsive force is dominant, approaching the maximum repulsive force. As the blocking area increases, the repulsive force gradually weakens and the attractive force gradually strengthens. Finally, when it is closed at 50%, a force balance is reached. The overall result is a continuous change in which the mutual repulsive force gradually decreases.

[0067] The eighth function: The iron blocker completely closes between the two magnets, completely blocking the magnetic pole action surface and achieving 100% complete closure. When the iron blocker is thinner than the specified size, it cannot completely counteract the repulsive force between the two magnets. Some of the repulsive force will penetrate the blocker and act on the two magnets, forming an uncounted residual repulsive force. Its magnitude is directly related to the extent of insufficient thickness. If the amount of iron-based material used in the iron blocker is reduced, the effective adsorption area or adsorption strength of the two magnets will decrease, and it will not be able to generate enough adsorption force to completely replace the repulsive force. The thickness of the iron blocker can be gradually reduced to adjust its thickness. By closing the iron blocker 100%, the mutual repulsive force between the two magnets can be increased, reduced, or eliminated.

[0068] The thickness of the iron stopper is directly proportional to the repulsive force between the two magnets in the unobstructed state.

[0069] Specifically, the thickness of the iron stopper refers to the effective working thickness of the iron stopper, which needs to cover the magnetic pole action surface of the two magnets. The material is a high-permeability iron-based material, which is a key structural dimension for achieving magnetic force control.

[0070] When the blocker is made of pure iron, its thickness is made of 0.013 mm, 0.13 mm, 1.3 mm, 13 mm and 39 mm respectively, depending on the repulsive force between the two magnets. When the blocker is made of low-purity iron, its thickness is thicker than the above standards. When the thickness of the iron blocker is manufactured according to the above standards, the first seven functions of the variable magnetic force technology can be realized. When the thickness of the iron blocker is set to be less than the standard thickness, when the iron blocker is driven to the maximum magnetic force shielding state, there is still a repulsive force between the two magnets. At this time, the eighth function of the variable magnetic force technology can be realized.

[0071] Specifically, the core function of the iron blocker is to convert the repulsive force between two magnets into the attractive force of the magnet on the iron. The key is to completely block the magnetic pole action area with its own thickness, allowing the ferromagnetic material to fully adsorb the two magnets and cancel out the repulsive force. The greater the repulsive force, the higher the interaction strength of the magnetic poles of the two magnets. A thicker ferromagnetic material is needed to completely cover the magnetic pole action area, forming a sufficient adsorption area and adsorption force to completely replace the repulsive force.

[0072] When the iron stopper is made slightly thicker than the specified size, it has little impact on the variable magnetic force technology. However, when the iron stopper is made slightly thinner than the specified size, even when the iron stopper is 100% closed, the mutual repulsion between the two magnets cannot be completely eliminated. The mutual repulsion between the two magnets is clearly visible through the iron stopper. By gradually thinning the iron stopper beyond the specified size and keeping it 100% closed, the repulsion between the two repulsive magnets can be increased, decreased, or eliminated.

[0073] For example, when the repulsive force between two magnets reaches a pressure of 100 kg, a 13 mm thick iron barrier, when 100% closed, can control the repulsive force, causing the two magnets to attract each other very strongly. If the repulsive force reaches 100 kg, a 6.5 mm thick iron barrier, when 100% closed, will significantly reduce the repulsive force to 50 kg. When the iron barrier is slightly thinner than specified, the repulsive force can be clearly seen through it. Even when 100% closed, the iron barrier cannot completely eliminate the repulsive force between the two magnets when it is slightly thinner than specified. In other words, by gradually adjusting the thickness of the iron blocker to be slightly thinner than the specified size, the mutual repulsion force between the two magnets can be reduced to 1 kg or less, or even eliminated. This technology allows for arbitrary adjustment of the mutual repulsion force between the two magnets. This variable magnetic force technology is not limited by the use of double-door or single-door iron blocks. The iron blocker is made of high-purity iron.

[0074] like Figure 7 As shown, the magnetic blocking device is composed of a C3 iron block and C1 and C2 auxiliary magnets attached to both sides of the C3 iron block. The C1 and C2 auxiliary magnets are the same as the magnetic poles opposite to the two magnets. The magnetic strength of the C1 and C2 auxiliary magnets is lower than the magnetic strength of the lower magnet 1 and the upper live magnet 2.

[0075] Eight functional modes of the magnetic stopper C5

[0076] The first function is that the magnetic stopper completely exits the working area between the two magnets, without any obstruction, achieving 100% full opening. The two magnets are magnetic poles of the same name, naturally repelling each other. When there is no obstruction, the repulsive force reaches its maximum value, exhibiting a strong mutual repulsion state.

[0077] The second function: The magnetic blocking device completely closes between the two magnets, completely blocking the magnetic pole action surface and achieving 100% complete closure. The auxiliary magnets C1 and C2 minimize the repulsive force between the two magnets through low magnetic repulsion. The mutual repulsive force between the two magnets is reduced to an extremely low level, with no attractive force generated and only a weak repulsive force remaining.

[0078] The third function: The magnetic blocking part is inserted between the two magnets, blocking 50% of the magnetic pole action surface. The blocked area and the unblocked area are evenly distributed. The unblocked area is a strong repulsion between the two magnets, while the blocked area is a low magnetic repulsion. After the two are superimposed, the mutual repulsion force is significantly reduced, resulting in an unbalanced state, but there is still a weak repulsion force.

[0079] The fourth function: The magnetic blocking device opens from 50% to 60% to 70% to 80% to 90% to 100%. The magnetic blocking device gradually withdraws from the two magnets from the semi-blocking state. The blocking area continuously decreases from 50% to 0%. The interaction between the auxiliary magnets C1 and C2 and the two magnets gradually weakens and eventually completely separates. The effect of low magnetic repulsion gradually disappears, and the natural repulsion force of the two magnets gradually increases, eventually reaching the maximum repulsion force, showing a continuous change in the mutual repulsion force gradually increasing.

[0080] The fifth function: The magnetic blocking device is closed from 50% to 100% and gradually inserted between the two magnets from a semi-blocking state. The blocking area continuously increases from 50% to 100%. The correspondence between the auxiliary magnets C1 and C2 and the two magnets is gradually improved. The low magnetic repulsion effect is gradually enhanced. The influence of low magnetic repulsion is gradually enhanced, and the natural repulsion force of the two magnets is gradually canceled out.

[0081] The sixth function: The magnetic blocking device opens from 1% to 10% to 20% to 30% to 40% to 50%. The magnetic blocking device gradually withdraws from between the two magnets from being almost completely closed. The blocking area continuously decreases from 99% to 50%. The low magnetic repulsion gradually disappears from its strongest point. Initially, it is an extremely low repulsion force. As the blocking area decreases, the repulsion force gradually increases, showing a continuous change throughout the process where the mutual repulsion force gradually increases.

[0082] The seventh function: The magnetic blocking device is closed from 1% to 10% to 20% to 30% to 40% to 50%. The magnetic blocking device is gradually inserted between the two magnets from almost fully open. The blocking area continuously increases from 1% to 50%. The low magnetic repulsion gradually increases from none to the strongest. Initially, it is the maximum repulsion force. As the blocking area increases, the repulsion force gradually decreases to an extremely low level, showing a continuous change throughout the process where the mutual repulsion force gradually decreases.

[0083] The eighth function: The magnetic blocking device is fully closed and enters between the two magnets, completely blocking the magnetic pole action surface and achieving 100% complete closure. When the magnetic force of the auxiliary magnets C1 and C2 is adjusted up and down, the mutual repulsion force of the two mutually repelling magnets will gradually decrease and gradually increase.

[0084] By combining magnetic and iron blocking devices, the magnetic force of the two basic magnets can be controlled to ensure the normal operation of the pruning shears.

[0085] Scissor blade assembly: The scissor blade assembly includes a fixed scissor blade 17, a movable scissor blade, and a fixing screw 18; the fixed scissor blade 17 is fixedly connected to the fixed housing 4, and the movable scissor blade is hinged to the fixed scissor blade 17 by the fixing screw 18, and can open and close relative to the fixed scissor blade 17 to achieve cutting; the movable scissor blade can be configured with an angle adjustment structure, which includes a first fixed frame 26, a movable shaft, and a nut 25. The first fixed frame 26 is set on the movable scissor blade, the movable shaft is connected to the first fixed frame 26, and the nut 25 is sleeved on the movable shaft. By rotating the movable shaft 24, its length can be adjusted, thereby realizing the flexible adjustment of the opening angle of the movable scissor blade.

[0086] Transmission components:

[0087] The transmission assembly is a direct-drive mechanism, including a movable shaft 24 fixedly mounted on the top of the upper movable magnet 2, a third spring 11, a first fixed frame 26 fixedly mounted on the movable shear blade, and an adjusting nut 25 mounted on the movable shaft 24. The third spring 11 is located between the upper movable magnet 2 and the fixed housing 4, and is used to apply a downward pushing force to the upper movable magnet 2 to assist the movable shear blade in opening and resetting. One end of the movable shaft 24 is hinged to the first fixed frame 26. By rotating the movable shaft 24, its effective length can be changed to adjust the initial opening angle of the movable shear blade relative to the fixed shear blade 17.

[0088] The transmission assembly is a gear transmission mechanism, including a movable shaft 8 fixedly mounted on the top of the upper movable magnet 2, a second spring 10, a first gear 12 rotatably mounted in the fixed housing 4, a second gear 13 rotatably mounted in the fixed housing 4, and a third gear 14 rotatably mounted in the fixed housing 4. A first rack 9 is provided on the movable shaft 8, and the first gear 12 meshes with the first rack 9. The second spring 10 is located between the upper movable magnet 2 and the fixed housing 4, and is used to apply a downward pushing force to the upper movable magnet 2 to assist the movable shear blade in opening and resetting. The second gear 13 meshes with the first gear 12, the third gear 14 meshes with the second gear 13, and the third gear 14 meshes with the second rack 16 mounted on the movable shear blade.

[0089] Control Components: The control components include core wire 19, core wire puller 20, second fixing frame 21, core wire 23, core wire puller 35, and core wire reel 36. One end of core wire 19 is connected to iron stopper 5 and magnetic stopper C5, and the other end is connected to core wire puller 20. Core wire puller 20 is fixed on the second fixing frame 21, which is fixedly connected to the fixing shell 4. Pulling core wire puller 20 can drive the stopper to open through core wire 19. After being released, the stopper closes under the action of spring 7. Core wire 23 connects core wire puller 20 and core wire puller 35 to realize remote control. Core wire reel 36 is used to store core wire 23 and prevent it from being dragged to the ground.

[0090] Telescopic pole assembly: The telescopic pole assembly is an optional accessory, including a telescopic pole 28, a first steel pipe 29, a second steel pipe 30, a third steel pipe 31, a locking bolt 32, a locking rod 33, an external screw fixing head 34, and an inner nut fixing sleeve 22. The telescopic pole 28 is composed of multiple nested hollow steel pipes, which can be freely telescopically adjusted in length, and can be made up to 3 meters or more. The locking bolt 32 and the locking rod 33 are set on the steel pipe. The locking bolt 32 is opened and closed by pulling or pushing the locking rod 33, thereby locking or unlocking the relative position of the steel pipe. The inner nut fixing sleeve 22 is set on the fixing shell 4, and the external screw fixing head 34 is set at the end of the telescopic pole 28. The two are threaded together to realize the detachable connection between the telescopic pole assembly and the pruning shears. The core wire puller 35 and the core wire reel 36 are both set on the first steel pipe 29 of the telescopic pole 28 to realize remote control during high branch pruning.

[0091] Sawing assembly: The sawing assembly is an optional accessory, including a saw 37 and an inner nut retaining sleeve 38; the inner nut retaining sleeve 38 is set on the saw 37 and can be threadedly connected to the outer screw fixing head 34 of the telescopic rod assembly, so as to realize the detachable connection between the saw 37 and the telescopic rod assembly, and is used for sawing thick branches that cannot be cut by pruning shears.

[0092] To further clarify, the permanent magnet and the stopper need to be selected and adapted according to actual needs.

[0093] Permanent magnet selection: Depending on the actual operation requirements, you can choose permanent magnets with traditional magnetic pole distribution or new magnetic pole distribution. Permanent magnets with new magnetic pole distribution have more concentrated magnetic poles and stronger repulsive force, which is suitable for pruning thicker branches; permanent magnets with traditional magnetic pole distribution have moderate repulsive force, which is suitable for regular branch pruning.

[0094] Stopper selection: Iron stopper 5 is suitable for precise step adjustment of trimming force, while magnetic stopper C5 is suitable for smooth gradient adjustment of trimming force; iron stopper 5 or magnetic stopper C5 can be used alone, or the two can be used together to achieve more precise magnetic force adjustment.

[0095] It should be noted that this invention is a magnetic pruning shear, and the assembly steps of its components are as follows:

[0096] Magnetic drive component assembly

[0097] The lower magnet 1 is fixedly installed in the bottom inner cavity of the fixed shell 4, ensuring that the magnetic pole orientation of the lower magnet 1 is consistent with the design requirements, so that it can form a corresponding mating relationship with the upper movable magnet 2. Then, the magnet shell 3 is wrapped around the outside of the lower magnet 1, and the magnet shell 3 is fixedly connected to the inner wall of the fixed shell 4 to complete the encapsulation and limiting of the lower magnet 1 and prevent its displacement. Next, the shaft 6 is horizontally fixedly installed in the inner cavity of the fixed shell 4, ensuring that the shaft 6 is above the lower magnet 1 and at the horizontal height of the action surface of the two main magnet magnetic poles. Then, the first spring 7 is sleeved on the shaft 6, and the iron stopper 5 and the magnetic stopper C5 are then installed. The first spring 7 is slidably installed on the shaft 6, so that the two ends of the first spring 7 abut against the inner wall of the fixed shell 4 and the side of the blocker, respectively, ensuring that the iron blocker 5 and the magnetic blocker C5 can slide smoothly horizontally along the shaft 6, and are in a closed blocking state under the elastic force of the first spring 7 in a natural state; finally, the upper movable magnet 2 is slidably installed in the inner cavity of the fixed shell 4, positioned above the shaft 6, ensuring that the upper movable magnet 2 and the lower magnet 1 are opposite each other and can slide vertically up and down along the inner cavity of the fixed shell 4. At the same time, the outer side of the upper movable magnet 2 is covered and limited by the magnet shell 3, completing the main assembly of the magnetic drive component.

[0098] Transmission component assembly

[0099] The transmission components are available in two optional forms: gear transmission mechanism and direct drive mechanism. For different operating scenarios, assemble them according to the following steps:

[0100] Gear transmission mechanism assembly

[0101] The movable shaft 8 with the first rack 9 is fixedly installed at the top center of the upper movable magnet 2 to ensure that the movable shaft 8 can move vertically synchronously with the upper movable magnet 2;

[0102] The second spring 10 is sleeved on the outside of the movable shaft 8, so that the lower end of the second spring 10 abuts against the top of the upper movable magnet 2 and the upper end abuts against the top of the inner cavity of the fixed shell 4, ensuring that the second spring 10 can continuously apply a downward restoring force to the upper movable magnet 2.

[0103] Inside the fixed housing 4, the first gear 12, the second gear 13, and the third gear 14 are rotatably installed in sequence via a rotating shaft. The installation position and meshing clearance of each gear are adjusted so that the first gear 12 is stably meshed with the first rack 9 on the movable shaft 8, the second gear 13 meshes with the first gear 12, and the third gear 14 meshes with the second gear 13, thus completing the main assembly of the gear transmission mechanism.

[0104] Direct push transmission mechanism assembly

[0105] The movable shaft 24 is fixedly installed at the top center of the upper movable magnet 2 to ensure that the movable shaft 24 can move vertically synchronously with the upper movable magnet 2;

[0106] The third spring 11 is sleeved on the outside of the movable shaft 24, so that the lower end of the third spring 11 abuts against the top of the upper movable magnet 2 and the upper end abuts against the top of the inner cavity of the fixed shell 4, ensuring that the third spring 11 can continuously apply a downward restoring force to the upper movable magnet 2.

[0107] The adjusting nut 25 is screwed onto the rod of the movable shaft 24, and the top of the movable shaft 24 is hinged to the first fixed bracket 26 on the movable shear blade to complete the main assembly of the direct push transmission mechanism, ensuring that the effective working length of the movable shaft 24 can be adjusted by rotating the adjusting nut 25.

[0108] Shear blade assembly

[0109] The fixed shear blade 17 is fixedly connected to the front end of the fixed shell 4 to ensure that there is no relative displacement between the fixed shear blade 17 and the fixed shell 4, thus ensuring the structural stability during shearing.

[0110] The movable shear blade is hinged to the fixed shear blade 17 via the fixing screw 18. The hinge gap is adjusted so that the movable shear blade can rotate smoothly around the axis of the fixing screw 18, thereby achieving the opening and closing cooperation with the fixed shear blade 17.

[0111] Complete the linkage adaptation with the transmission components: In the gear transmission mode, adjust the second rack 16 and the third gear 14 preset at the tail of the movable shear blade to a stable meshing state; in the direct push transmission mode, pre-fix the first fixing frame 26 at the corresponding drive position of the movable shear blade to ensure smooth transmission link.

[0112] Control component assembly

[0113] The second fixing bracket 21 is fixedly installed at the corresponding position of the fixing shell 4, and then the core puller 20 is fixed on the second fixing bracket 21;

[0114] Take core wire 19, fix one end of it to the drive end of iron stopper 5 and magnetic stopper C5, and fix the other end to core wire puller 20. Debug to ensure that when core wire puller 20 is pulled, iron stopper 5 and magnetic stopper C5 can be driven to slide open synchronously along axis 6 through core wire 19.

[0115] Take the core wire 23, connect one end to the core wire puller 20, and the other end to the core wire puller 35 at the grip end. Then install the core wire reel 36 at the corresponding grip end position, and store the excess core wire 23 on the core wire reel 36 to avoid the core wire dragging and getting stuck, thus completing the overall assembly of the control component.

[0116] Optional component assembly

[0117] Optional accessories extend the equipment's operational scope, including a telescopic pole assembly and a sawing assembly, both of which feature a detachable design. Assembly steps are as follows:

[0118] Telescopic pole assembly and matching connection

[0119] Multiple hollow steel pipes nested together are sequentially assembled to form a telescopic rod 28. A lock 32 and a locking rod 33 are installed at the corresponding positions on the steel pipes. The rods are adjusted to ensure that the push-pull locking rod 33 can control the opening and closing of the lock 32, so as to achieve smooth adjustment and stable locking of the telescopic rod length.

[0120] The inner nut fixing sleeve 22 is fixedly installed at the tail of the fixing shell 4, and the outer screw fixing head 34 is fixedly installed at the front end of the telescopic rod 28. The telescopic rod 28 and the pruning shear body are detachably fixedly connected by the thread engagement of the outer screw fixing head 34 and the inner nut fixing sleeve 22.

[0121] The core cable puller 35 and the core cable reel 36 are fixedly installed on the gripping end of the telescopic pole 28 to complete the linkage between the telescopic pole assembly and the control assembly, thereby realizing remote control of high-pole operations.

[0122] Assembly and connection of sawing components

[0123] The inner nut retaining sleeve 38 is fixedly installed on the handle of the saw 37 to complete the pre-assembly of the sawing assembly;

[0124] When rough branch sawing is required, remove the main body of the pruning shears from the outer screw fixing head 34 of the telescopic rod 28, and screw the inner nut fixing sleeve 38 of the saw 37 into the outer screw fixing head 34 to complete the detachable matching installation of the sawing component and the telescopic rod component.

[0125] It should be noted that this invention is a magnetic pruning shear, and its working process is as follows:

[0126] When the equipment is in its natural initial state, the iron blocker 5 and the magnetic blocker C5 are completely closed and blocked at the magnetic pole action surface between the lower magnet 1 and the upper movable magnet 2 under the elastic force of the first spring 7. The repulsive magnetic force between the two main magnets is completely canceled by the blocker. Under the downward elastic force of the second spring 10 or the third spring 11, the upper movable magnet 2 is at the lower stop position inside the cavity of the fixed shell 4. Correspondingly, the movable shear blade and the fixed shear blade 17 are in the open initial state, waiting for the shearing operation.

[0127] Depending on the type of transmission mechanism, it is divided into two independent operating processes: gear transmission and direct drive, but the core control logic is the same.

[0128] Gear transmission shearing process

[0129] The operator places the branch to be pruned between the fixed shear blade 17 and the open movable shear blade, and pulls the core wire puller 35 at the grip end of the control component. Through the step-by-step linkage of the core wire 23, the core wire puller 20, and the core wire 19, the iron stopper 5 and the magnetic stopper C5 slide along the axis 6, overcoming the elastic force of the first spring 7, and gradually withdrawing from the magnetic pole action surface.

[0130] As the stopper opens, the repulsive magnetic force between the same magnetic poles of the lower magnet 1 and the upper movable magnet 2 is gradually released. The strong repulsive force pushes the upper movable magnet 2 to slide upward along the inner cavity of the fixed shell 4, and simultaneously drives the top movable shaft 8 to move upward.

[0131] The first rack 9 on the movable shaft 8 drives the first gear 12 that meshes with it to rotate. The first gear 12 drives the second gear 13 and the third gear 14 to rotate in sequence. The third gear 14, through meshing with the second rack 16 at the tail of the movable shear blade, drives the movable shear blade to rotate around the fixing screw 18 toward the fixing shear blade 17 to close, thus completing the cutting operation of the branch.

[0132] During the operation, the pulling stroke of the core wire puller can be controlled to adjust the opening range of the stopper, change the blocking area of ​​the magnetic pole action surface, and thus adjust the magnitude of the repulsive magnetic force, thereby achieving flexible control of the shearing force and adapting to branches of different thicknesses.

[0133] Direct drive shearing process

[0134] The operator places the branch to be pruned between the fixed shear blade 17 and the open movable shear blade, and pulls the core wire puller 35 at the holding end of the control component. Through the linkage of the core wire, the iron blocker 5 and the magnetic blocker C5 slide out of the magnetic pole action surface along the axis 6, releasing the repulsive magnetic force between the lower magnet 1 and the upper movable magnet 2.

[0135] The repulsive magnetic force pushes the upper movable magnet 2 to slide upward along the inner cavity of the fixed shell 4, simultaneously driving the top movable shaft 24 to push upward;

[0136] The movable shaft 24 directly drives the movable shear blade to rotate and close around the fixed screw 18 toward the fixed shear blade 17 via the first fixed frame 26 hinged at the top, thus completing the cutting operation of the branch;

[0137] Before operation, the effective working length of the movable shaft 24 can be adjusted by rotating the adjusting nut 25, thereby adjusting the initial opening angle of the movable shear blade relative to the fixed shear blade 17 to adapt to branches of different diameters; during operation, the shearing force can be adjusted by controlling the pulling stroke of the core wire puller.

[0138] After the branches are cut, the operator releases the core wire puller 35. Under the restoring force of the first spring 7, the iron stopper 5 and the magnetic stopper C5 slide back to their original positions along the shaft 6, closing again to block the magnetic pole action surface between the lower magnet 1 and the upper movable magnet 2, thus canceling the repulsive magnetic force between them. At this time, the upper movable magnet 2 loses its upward repulsive force and slides down to the lower stop point along the inner cavity of the fixed shell 4 under the downward force of the second spring 10 or the third spring 11. Through the reverse linkage of the transmission component, the movable shear blade is driven to rotate in the opposite direction around the fixed screw 18, reopening to the initial state, completing a complete shearing operation cycle, and waiting for the next shearing operation.

[0139] This device can switch between blocking modes to achieve multi-dimensional adjustment of shearing force, adapting to different operational needs. The specific process is as follows:

[0140] Stepped force adjustment: When the iron stopper 5 is selected alone, the sliding range of the iron stopper 5 can be adjusted by controlling the pulling stroke of the core wire puller, realizing the switching of eight sliding working modes. By changing the blocking area of ​​the magnetic pole action surface, the repulsive force of the main magnet is converted into the attractive force of the magnet on the iron, realizing the precise stepped adjustment of the shearing force; Alternatively, by replacing the iron stopper 5 with one of different thicknesses, the parameter adjustment of the basic shearing force can be achieved in the 100% closed state.

[0141] Gradient force adjustment: When the magnetic stopper C5 is selected alone, the sliding range of the magnetic stopper C5 can be adjusted by controlling the pulling stroke of the core wire puller. Eight working modes can be switched. Through the repulsive effect of the like-named auxiliary magnet and the main magnet, the repulsive force of the main magnet can be smoothly adjusted in a gradient manner to adapt to the shearing force requirements of different branches. The basic shearing force can also be adjusted by replacing the auxiliary magnet with a different magnetic force.

[0142] Composite adjustment: When the iron stopper 5 and the magnetic stopper C5 are used together, the adjustment characteristics of the two can be combined to achieve fine adjustment of the shearing force, which can meet the high force requirements of pruning coarse branches and avoid the problem of branch damage when pruning fine branches.

[0143] Expanding the workflow of scenario-based operations

[0144] High branch pruning operation process

[0145] Before operation, screw the outer screw fixing head 34 of the telescopic pole assembly into the inner nut fixing sleeve 22 of the pruning shear body and fix it with threads. Adjust the telescopic length of the telescopic pole 28 according to the height of the tall branch to be pruned, and lock the length of the telescopic pole through the locking rod 33 and the locking 32.

[0146] Adjust the length of the core wire 23 and store the excess core wire on the core wire reel 36 to ensure smooth operation of the control link;

[0147] The operator holds the grip end of the telescopic pole, aligns the shearing blade assembly with the branch to be pruned at a high position, and pulls the core wire puller 35 at the grip end. The high branch pruning operation can be completed through remote linkage of the control assembly. After releasing the wire puller, the equipment automatically resets, and the process is the same as the basic pruning operation.

[0148] Rough branch sawing operation process

[0149] When encountering thick branches that the shearing blade assembly cannot cut, remove the pruning shears body from the outer screw fixing head 34 of the telescopic rod 28, and screw the inner nut fixing sleeve 38 of the sawing assembly into the outer screw fixing head 34 to complete the matching installation of the saw 37 and the telescopic rod.

[0150] Adjust and lock the length of the telescopic rod 28 according to the height of the thick branch. The operator holds the telescopic rod, aligns the saw blade of the saw 37 with the thick branch, and drives the saw 37 to complete the sawing operation of the thick branch by pushing and pulling the telescopic rod back and forth.

[0151] After the work is completed, saw 37 can be removed and reinstalled into the pruning shears to restore the equipment's cutting function.

[0152] Compared with existing magnetic pruning shears, this invention does not require battery power or strong manual operation. The cutting force can be flexibly adjusted, and it can also be equipped with telescopic rods and sawing components, making it suitable for pruning operations such as garden maintenance and fruit tree planting.

[0153] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic pruning shear, characterized in that, Includes magnetic drive components, shear blade components, transmission components, and control components; The magnetic drive assembly includes a lower magnet (1), an upper movable magnet (2), a magnet shell (3), a fixed shell (4), an iron blocker (5), a magnetic blocker (C5), a shaft (6), and a first spring (7). The lower magnet (1) is fixed inside the fixed shell (4). The upper movable magnet (2) is slidably disposed inside the fixed shell (4) and is opposite to the lower magnet (1). The magnet shell (3) covers the outside of the lower magnet (1) and the upper movable magnet (2). The iron blocker (5) and the magnetic blocker (C5) are both slidably disposed on the shaft (6). The shaft (6) is fixed on the fixed shell (4). The iron blocker (5) and the magnetic blocker (C5) are both located at the magnetic pole action surface between the lower magnet (1) and the upper movable magnet (2). The first spring (7) is sleeved on the shaft (6). The shear blade assembly includes a fixed shear blade (17), a movable shear blade, and a fixing screw (18). The fixed shear blade (17) is fixedly connected to the fixed shell (4), and the movable shear blade is hinged to the fixed shear blade (17) by the fixing screw (18). The transmission assembly connects the upper movable magnet (2) and the movable shear blade, converting the linear motion of the upper movable magnet (2) into the opening and closing motion of the movable shear blade; The control component connects the iron stopper (5) and the magnetic stopper (C5) to control their sliding opening and closing.

2. The magnetic pruning shears according to claim 1, characterized in that, Both the magnet shell (3) and the fixed shell (4) are made of materials that do not attract magnetic force, and the lower magnet (1) and the upper movable magnet (2) are permanent magnets with matching magnetic pole distribution.

3. The magnetic pruning shears according to claim 1, characterized in that, The iron blocker (5) is made of high-purity iron material and has a double-door or single-door structure.

4. The magnetic pruning shears according to claim 1, characterized in that, The magnetic stopper (C5) consists of a C1 auxiliary magnet, a C2 auxiliary magnet and a C3 iron block. The C1 auxiliary magnet is attached to the bottom of the C3 iron block and is opposite to the lower magnet (1). The C2 auxiliary magnet is attached to the top of the C3 iron block and is opposite to the upper movable magnet (2). The thickness of the C3 iron block is consistent with the thickness standard of the iron stopper (5). The magnetic stopper (C5) has a double-door or single-door structure.

5. A magnetic pruning shears according to claim 1, characterized in that, The transmission assembly is a gear transmission mechanism, including: A movable shaft (8) is fixedly installed on the top of the upper movable magnet (2), and a first rack (9) is provided on the movable shaft (8); The second spring (10) is located between the upper movable magnet (2) and the fixed shell (4) and is used to apply a downward pushing force to the upper movable magnet (2) to assist the movable shear blade in opening and resetting. A first gear (12) is rotatably disposed within the fixed housing (4), and the first gear (12) meshes with the first rack (9); A second gear (13) is rotatably disposed within the fixed housing (4), and the second gear (13) meshes with the first gear (12); A third gear (14) is rotatably disposed within a fixed housing (4), the third gear (14) meshing with a second gear (13), and the third gear (14) meshing with a second rack (16) disposed on a movable shear blade.

6. A magnetic pruning shears according to claim 1, characterized in that, The transmission assembly is a direct-drive transmission mechanism, including: A movable shaft (24) is fixedly installed on the top of the upper movable magnet (2); The third spring (11) is located between the upper movable magnet (2) and the fixed shell (4) and is used to apply a downward pushing force to the upper movable magnet (2) to assist the movable shear blade in opening and resetting. A first fixing frame (26) is fixedly mounted on the movable shear blade, and one end of the movable shaft (24) is connected to the first fixing frame (26); An adjusting nut (25) is provided on the movable shaft (24), and its effective length is changed by rotating the movable shaft (24) to adjust the initial opening angle of the movable shear blade relative to the fixed shear blade (17).

7. A magnetic pruning shears according to claim 1, characterized in that, The control assembly includes a core wire (19), a core wire puller (20), a second fixing frame (21), a core wire (23), a core wire puller (35), and a core wire reel (36). One end of the core wire (19) is connected to an iron stopper (5) and a magnetic stopper (C5), and the other end is connected to the core wire puller (20). The core wire puller (20) is fixed on the second fixing frame (21), and the second fixing frame (21) is fixedly connected to the fixing shell (4). The core wire (23) is connected to the core wire puller (20) and the core wire puller (35). The core wire reel (36) is used to store the core wire (23).

8. A magnetic pruning shear according to any one of claims 1-7, characterized in that, It also includes a telescopic rod assembly, which includes a telescopic rod (28), a mortise lock (32), a locking rod (33), an outer screw fixing head (34), and an inner nut fixing sleeve (22). The inner nut fixing sleeve (22) is set on the fixed shell (4), and the outer screw fixing head (34) is set at the end of the telescopic rod (28) and threadedly connected to the inner nut fixing sleeve (22). The telescopic rod (28) is composed of multiple hollow steel pipes nested together. The mortise lock (32) and the locking rod (33) are set on the steel pipes. The core puller (35) and the core winding wheel (36) are set on the telescopic rod (28).

9. A magnetic pruning shears according to claim 8, characterized in that, It also includes a sawing assembly, which includes a saw (37) and an inner nut retaining sleeve (38). The inner nut retaining sleeve (38) is disposed on the saw (37), and the saw (37) is detachably connected to the outer screw retaining head (34) through the inner nut retaining sleeve (38).

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