Labor-saving gardening pruning shears

Abstract

The utility model belongs to the technical field of gardening tools, concretely is a labor -saving type gardening pruning shears, this practical can realize labor -saving efficient shearing, through the conversion mechanism of first rack and first gear ring engagement, planetary wheel and intermediate wheel transmission, the grip of driving handle is amplified and is passed to the scissors piece, and the elasticity of first, second worm spring is assisted, the hand power requirement of shearing is reduced greatly, especially suitable for pruning thicker branches, reduces the fatigue feeling of long time operation, this practical has self -adaptation protection function, when encountering the branch that is too hard and causes shearing to be blocked, planetary wheel can slide between positioning groove and limiting groove through the clamp block, and the torque is released in combination with the compression spring buffer, avoids the damage or damage of blade, and simultaneously the compression spring force of limiting shaft can be adjusted by rotating the second gear ring, adapts to the pruning demand of different hardness branches, improves the equipment durability and the application scope.

Description

Technical Field

[0001] This utility model relates to the field of gardening tools technology, specifically a labor-saving gardening pruning shears. Background Technology

[0002] Pruning shears are tools used for precise pruning in horticulture and agricultural production. Their main function is to accurately cut plant branches, tender shoots, and spent flowers. By removing diseased, weak, overly dense, and excessively long branches, they regulate nutrient distribution, promote the growth of healthy branches, improve ventilation and light penetration, and reduce the breeding of pests and diseases. In flower cultivation, they can prune spent flowers to prolong the flowering period; in fruit and vegetable cultivation, they can thin out excess branches, concentrating nutrients for the fruit and increasing yield and quality; in seedling cultivation, they can be used for shaping ideal plant forms and promoting robust plant development. Their sharp blades are designed to fit the hand, resulting in smooth, clean cuts that reduce wound healing time and prevent pathogen invasion.

[0003] However, traditional pruning shears rely on a simple lever structure to transmit force, requiring significant gripping force when cutting harder branches, which can easily lead to hand fatigue. This makes them particularly unsuitable for prolonged work or for users with weaker strength. Some pruning shears lack torque buffering mechanisms, making the blades prone to jamming or damage due to excessive instantaneous force when encountering overly hard branches, and they cannot dynamically adjust the cutting force according to the branch's hardness. Furthermore, the return mechanism of conventional pruning shears lacks sufficient return force, easily becoming difficult to open and close after repeated use, affecting pruning efficiency. These problems make it difficult for existing pruning shears to balance labor-saving and durability in scenarios such as fruit tree pruning and shrub maintenance. Therefore, we propose a labor-saving horticultural pruning shear. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a labor-saving garden pruning shear, which solves the problems mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A labor-saving garden pruning shears, comprising,

[0007] Gardening shears, the gardening shears include two drive handles, one end of the two drive handles is rotatably connected to the same first connecting shaft, a return spring is movably sleeved on the outside of the first connecting shaft, the two ends of the return spring respectively abut against one end of the adjacent drive handle, a shear blade is fixedly connected to one side of each of the two drive handles, and one side of the two shear blades is rotatably connected to the same second connecting shaft.

[0008] The conversion mechanism includes a protective shell fixedly connected to the top of the drive handle. A first gear ring is rotatably connected to the bottom of the inner wall of the protective shell. A fixed shaft is fixedly connected to the bottom of the inner wall of the protective shell. A connecting sleeve is rotatably connected to the outside of the fixed shaft. An output wheel is fixedly sleeved on the outside of the connecting sleeve. A first rack is rotatably connected to one side of the drive handle. A second rack is rotatably connected to one side of the scissor blade. The first rack meshes with the first gear ring, and the second rack meshes with the output wheel. The first gear ring can drive the output wheel to rotate.

[0009] Preferably, a first rod is fixedly connected to one side of the drive handle, a first rack is rotatably connected to the outside of the first rod, a first worm spring is provided on the outside of the first rod, one end of the first worm spring is fixedly connected to the first rod, and the other end is fixedly connected to the bottom of the first rack, a second rod is fixedly connected to one side of the scissor blade, a second rack is rotatably connected to the outside of the second rod, a second worm spring is provided on the outside of the second rod, one end of the second worm spring is fixedly connected to the outside of the second rod, and the other end is fixedly connected to the bottom of the second rack.

[0010] Preferably, a plurality of planetary gears are slidably connected to the bottom of the inner wall of the protective shell, and the plurality of planetary gears mesh with the interior of the first gear ring. An intermediate gear is fixedly sleeved on the outside of the connecting sleeve, and the plurality of planetary gears mesh with the exterior of the intermediate gear.

[0011] Preferably, the tops of several planetary gears are rotatably connected to limit shafts, and the outer surfaces of several limit shafts are provided with meshing grooves. The inner surface of the protective shell is rotatably connected to a second gear ring, and the several limit shafts mesh with the second gear ring through the meshing grooves.

[0012] Preferably, a limiting groove is formed on the top of the planetary gear, a limiting piece is slidably connected inside the limiting groove, the limiting piece is threaded to the outside of the limiting shaft, a compression spring is fixedly connected to the bottom of the limiting piece, and a pressure shaft is fixedly connected to the bottom of the compression spring.

[0013] Preferably, the bottom of the inner wall of the protective shell is provided with a positioning groove, and a locking block is fixedly connected to the outside of the pressure shaft. The locking block slides inside the positioning groove and the limiting groove.

[0014] Beneficial effects

[0015] This invention provides a labor-saving garden pruning shear. Compared with the prior art, it has the following advantages:

[0016] 1. This utility model enables labor-saving and efficient cutting. Through the meshing of the first rack and the first gear ring, and the conversion mechanism of the planetary gear and the intermediate gear transmission, the gripping force of the drive handle is amplified and transmitted to the shear blade. With the elastic assistance of the first and second worm springs, the hand force required during cutting is greatly reduced. It is especially suitable for pruning thicker branches and reduces fatigue during long-term operation.

[0017] 2. This utility has an adaptive protection function. When encountering hard branches that obstruct the cutting process, the planetary gear can slide between the positioning groove and the limiting groove through the locking block. Combined with the compression spring, the torque is released to prevent the blade from jamming or being damaged. At the same time, rotating the second gear ring can adjust the compression spring force of the limiting shaft to adapt to the pruning needs of branches with different hardness, thereby improving the durability and applicability of the equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 for Figure 1 Enlarged 3D structural diagram of part A;

[0020] Figure 3 This is a three-dimensional structural diagram of the connecting sleeve portion of this utility model;

[0021] Figure 4 for Figure 3 Enlarged 3D structural diagram of part B;

[0022] Figure 5 This is a three-dimensional structural diagram of the compression spring part of this utility model.

[0023] In the diagram: 1. Garden shears; 2. Drive handle; 3. Locking block; 4. First connecting shaft; 5. Return spring; 6. Shear blades; 7. Second connecting shaft; 8. Conversion mechanism; 9. First rod; 10. First worm spring; 11. First rack; 12. Second rod; 13. Second worm spring; 14. Second rack; 15. Protective shell; 16. First gear ring; 17. Output wheel; 18. Connecting sleeve; 19. Fixed shaft; 20. Intermediate wheel; 21. Planetary gear; 22. Limiting groove; 23. Limiting piece; 24. Limiting shaft; 25. Engaging groove; 26. Second gear ring; 27. Compression spring; 28. Pressure shaft; 29. ​​Positioning groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5 This utility model provides a technical solution:

[0026] A labor-saving garden pruning shears, comprising,

[0027] Gardening shears 1, gardening shears 1 includes two drive handles 2, one end of the two drive handles 2 is rotatably connected to the same first connecting shaft 4, the outside of the first connecting shaft 4 is movably sleeved with a return spring 5, the two ends of the return spring 5 respectively abut against one end of the adjacent drive handle 2, and one side of each of the two drive handles 2 is fixedly connected with a shear blade 6, and one side of each of the two shear blades 6 is rotatably connected to the same second connecting shaft 7.

[0028] With the above-described structure, garden shears 1 can be driven to prune branches. Specifically, when it is necessary to prune branches, the drive handle 2 is squeezed, and the two drive handles 2 rotate around the first connecting shaft 4. At the same time, the return spring 5 is compressed, and the two drive handles 2 rotate and drive the two shear blades 6 to rotate around the second connecting shaft 7, so that the branches to be cut can be pruned. When the pruning is completed, the drive handle 2 is released, and the two shear blades 6 can be returned to their original positions by the return spring 5, which facilitates the use of garden shears 1.

[0029] The conversion mechanism 8 includes a protective shell 15 fixedly connected to the top of the drive handle 2. A first gear ring 16 is rotatably connected to the bottom of the inner wall of the protective shell 15. A fixed shaft 19 is fixedly connected to the bottom of the inner wall of the protective shell 15. A connecting sleeve 18 is rotatably connected to the outside of the fixed shaft 19. An output wheel 17 is fixedly sleeved on the outside of the connecting sleeve 18. A first rack 11 is rotatably connected to one side of the drive handle 2. A second rack 14 is rotatably connected to one side of the scissor blade 6. The first rack 11 meshes with the first gear ring 16, and the second rack 14 meshes with the output wheel 17. The first gear ring 16 can drive the output wheel 17 to rotate.

[0030] A first rod 9 is fixedly connected to one side of the drive handle 2. A first rack 11 is rotatably connected to the outside of the first rod 9. A first worm spring 10 is provided on the outside of the first rod 9. One end of the first worm spring 10 is fixedly connected to the first rod 9, and the other end is fixedly connected to the bottom of the first rack 11. A second rod 12 is fixedly connected to one side of the scissor blade 6. A second rack 14 is rotatably connected to the outside of the second rod 12. A second worm spring 13 is provided on the outside of the second rod 12. One end of the second worm spring 13 is fixedly connected to the outside of the second rod 12, and the other end is fixedly connected to the bottom of the second rack 14.

[0031] A number of planetary gears 21 are slidably connected to the bottom of the inner wall of the protective shell 15. All of the planetary gears 21 mesh with the inside of the first gear ring 16. An intermediate gear 20 is fixedly sleeved on the outside of the connecting sleeve 18. All of the planetary gears 21 mesh with the outside of the intermediate gear 20.

[0032] Because pruning branches requires frequent squeezing of the garden shears 1, but prolonged large opening and closing of the garden shears 1 can cause hand discomfort, the above-mentioned structure can avoid the hand discomfort caused by frequent large opening and closing. Specifically, when the drive handle 2 is squeezed, the first rack 11 rotates outside the first rod 9, which drives the first gear ring 16 to rotate. The rotation of the first gear ring 16 drives the planetary gear 21 to rotate, the rotation of the planetary gear 21 drives the output wheel 17 to rotate, the rotation of the output wheel 17 drives the connecting sleeve 18 to rotate, the rotation of the connecting sleeve 18 drives the output wheel 17 to rotate, the rotation of the output wheel 17 drives the second rack 14 to move, the movement of the second rack 14 drives the second rod 12 to move, and the movement of the second rod 12 drives the other shear blade 6 to move, thus quickly cutting the branches.

[0033] The top of several planetary gears 21 is rotatably connected to a limiting shaft 24. The outer side of several limiting shafts 24 is provided with a meshing groove 25. The inner side of the protective shell 15 is rotatably connected to a second gear ring 26. Several limiting shafts 24 mesh with the second gear ring 26 through the meshing groove 25.

[0034] The planetary gear 21 has a limiting groove 22 on its top. A limiting piece 23 is slidably connected inside the limiting groove 22. The limiting piece 23 is threaded onto the outside of the limiting shaft 24. A compression spring 27 is fixedly connected to the bottom of the limiting piece 23. A compression shaft 28 is fixedly connected to the bottom of the compression spring 27.

[0035] The bottom of the inner wall of the protective shell 15 is provided with a positioning groove 29, and the pressure shaft 28 is fixedly connected to the outside with a locking block 3, which slides inside the positioning groove 29 and the limiting groove 22.

[0036] With the above-mentioned structure, the garden shears 1 can be adjusted to avoid the garden shears 1 getting stuck because it cannot cut branches. Specifically, when cutting branches, the first gear ring 16 drives the planetary gear 21 to rotate. When the garden shears 1 cannot cut branches, the first gear ring 16 releases torque on the planetary gear 21. At the same time, the planetary gear 21 rotates and slides the locking block 3 from the positioning groove 29 into the limiting groove 22. The compression spring 27 is compressed, so that the limiting plate 23 and the planetary gear 21 can slide at the bottom of the protective shell 15, realizing the rotation and rotation of the planetary gear 21, so as to alleviate the torque brought by the first gear ring 16. The drive handle 2 directly drives the shear blade 6 to open and close to cut branches.

[0037] It is worth mentioning that by rotating the second gear ring 26, the limiting shafts 24 on several planetary gears 21 can be rotated. The rotation of the limiting shafts 24 causes the limiting plates 23 to move, which causes the compression springs 27 to extend and retract, thereby adjusting the release torque of the planetary gears 21 and preventing the garden shears 1 from getting stuck on the branches.

[0038] Working principle: When the drive handle 2 is squeezed, the first rack 11 rotates outside the first rod 9, which drives the first gear ring 16 to rotate. The rotation of the first gear ring 16 drives the planetary gear 21 to rotate. The rotation of the planetary gear 21 drives the output wheel 17 to rotate. The rotation of the output wheel 17 drives the connecting sleeve 18 to rotate. The rotation of the connecting sleeve 18 drives the output wheel 17 to rotate. The rotation of the output wheel 17 drives the second rack 14 to move. The movement of the second rack 14 drives the second rod 12 to move. The movement of the second rod 12 drives the other scissor blade 6 to move. At this time, the tree branch is quickly cut.

[0039] When cutting branches, the first gear ring 16 drives the planetary wheel 21 to rotate. When the garden shears 1 cannot cut the branches, the first gear ring 16 releases the torque on the planetary wheel 21. At the same time, the planetary wheel 21 rotates and slides the locking block 3 from the positioning groove 29 into the limiting groove 22. The compression spring 27 is compressed, so that the limiting plate 23 and the planetary wheel 21 can slide at the bottom of the protective shell 15, realizing the rotation and rotation of the planetary wheel 21, so as to alleviate the torque brought by the first gear ring 16. The drive handle 2 directly drives the shear blade 6 to open and close to cut the branches.

[0040] At the same time, by rotating the second gear ring 26, the limiting shafts 24 on several planetary gears 21 can be rotated. The rotation of the limiting shafts 24 causes the limiting plates 23 to move, which causes the compression springs 27 to extend and retract, thereby adjusting the release torque of the planetary gears 21 and preventing the garden shears 1 from getting stuck on the branches.

[0041] When the planetary gear 21 rotates and rotates, and the drive handle 2 is continuously squeezed, the two drive handles 2 rotate around the first connecting shaft 4. At the same time, the return spring 5 is compressed. The two drive handles 2 rotate and drive the two scissor blades 6 to rotate around the second connecting shaft 7, so that the branches that need to be trimmed can be trimmed. When the trimming is completed, the drive handle 2 is released, and the two scissor blades 6 can be returned to their original positions by the return spring 5, which makes it convenient to use the garden shears 1.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A labor-saving garden pruning shears, characterized in that: include, Gardening shears (1), the gardening shears (1) include two drive handles (2), one end of the two drive handles (2) is rotatably connected to the same first connecting shaft (4), a return spring (5) is movably sleeved on the outside of the first connecting shaft (4), the two ends of the return spring (5) respectively abut against one end of the adjacent drive handle (2), and a scissor blade (6) is fixedly connected to one side of each of the two drive handles (2), and one side of the two scissor blades (6) is rotatably connected to the same second connecting shaft (7); The conversion mechanism (8) includes a protective shell (15) fixedly connected to the top of the drive handle (2). A first gear ring (16) is rotatably connected to the bottom of the inner wall of the protective shell (15). A fixed shaft (19) is fixedly connected to the bottom of the inner wall of the protective shell (15). A connecting sleeve (18) is rotatably connected to the outside of the fixed shaft (19). An output wheel (17) is fixedly sleeved on the outside of the connecting sleeve (18). A first rack (11) is rotatably connected to one side of the drive handle (2). A second rack (14) is rotatably connected to one side of the scissor blade (6). The first rack (11) meshes with the first gear ring (16). The second rack (14) meshes with the output wheel (17). The first gear ring (16) can drive the output wheel (17) to rotate.

2. The labor-saving garden pruning shears according to claim 1, characterized in that: A first rod (9) is fixedly connected to one side of the drive handle (2). A first rack (11) is rotatably connected to the outside of the first rod (9). A first worm spring (10) is provided on the outside of the first rod (9). One end of the first worm spring (10) is fixedly connected to the first rod (9), and the other end is fixedly connected to the bottom of the first rack (11). A second rod (12) is fixedly connected to one side of the scissor blade (6). A second rack (14) is rotatably connected to the outside of the second rod (12). A second worm spring (13) is provided on the outside of the second rod (12). One end of the second worm spring (13) is fixedly connected to the outside of the second rod (12), and the other end is fixedly connected to the bottom of the second rack (14).

3. The labor-saving garden pruning shears according to claim 2, characterized in that: The bottom of the inner wall of the protective shell (15) is slidably connected with a number of planetary gears (21), and the planetary gears (21) are all meshed with the inside of the first gear ring (16). The outside of the connecting sleeve (18) is fixedly sleeved with an intermediate gear (20), and the planetary gears (21) are all meshed with the outside of the intermediate gear (20).

4. The labor-saving garden pruning shears according to claim 3, characterized in that: The top of several planetary gears (21) is rotatably connected to a limiting shaft (24), and the outer side of several limiting shafts (24) is provided with a meshing groove (25). The inner side of the protective shell (15) is rotatably connected to a second gear ring (26), and several limiting shafts (24) mesh with the second gear ring (26) through the meshing groove (25).

5. The labor-saving garden pruning shears according to claim 4, characterized in that: The planetary gear (21) has a limiting groove (22) on its top. A limiting piece (23) is slidably connected inside the limiting groove (22). The limiting piece (23) is threaded onto the outside of the limiting shaft (24). A compression spring (27) is fixedly connected to the bottom of the limiting piece (23). A pressure shaft (28) is fixedly connected to the bottom of the compression spring (27).

6. The labor-saving garden pruning shears according to claim 5, characterized in that: The bottom of the inner wall of the protective shell (15) is provided with a positioning groove (29), and a locking block (3) is fixedly connected to the outside of the pressure shaft (28). The locking block (3) slides inside the positioning groove (29) and the limiting groove (22).

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