Grafting and pruning dual-purpose scissors

Abstract

The utility model provides a grafting prunes two -purpose formula scissors belongs to the horticultural tool technical field. It includes two through the connecting rivet connection's scissors blade, two scissors blade end is connected with the handle, the handle be by the connecting portion and the extension part composition, the connecting portion be linked with the scissors blade end, the extension part hollowly be provided with and internally be provided with the extension arm structure. Through the handle is designed into the adjustable structure by the connecting portion and the extension part composition, and is provided with the telescopic extension arm structure in the extension part, makes the handle length of scissors can adjust according to different operation demand.

Description

Technical Field

[0001] This utility model belongs to the field of gardening tool technology and relates to a grafting and pruning dual-purpose shears. Background Technology

[0002] With the continuous development of agricultural technology, gardening tools are playing an increasingly important role in agricultural production. Shears, as one of the commonly used gardening tools, are widely used in agricultural production activities such as fruit tree pruning and grafting. Currently, the most common gardening shears on the market are mainly divided into two categories: pruning shears and grafting shears.

[0003] Pruning shears are commonly used for trimming tree branches. For example, the "gardening pruning shears" published under CN201869598U include two hinged shear bodies, each with a handle and a blade. The blade has a concave groove and a serrated edge, allowing for effortless cutting of large-diameter branches with clean cuts that do not damage the branch's internal structure. Another example is the "garden pruning shears" published under CN207766956U, which includes two intersecting shear bodies hinged together by a pin. The blade ends consist of detachably connected short blades and an extension section, the extension section comprising several detachably connected extension blades.

[0004] Grafting shears are mainly used for plant grafting operations. For example, the "a kind of chili grafting shear" with publication number CN206274810U includes two shear parts and a hinge screw, as well as a semi-circular groove with an opening facing outward. A connector that can slide along the semi-circular groove is engaged in the semi-circular groove to ensure consistent cutting angles and improve the success rate of grafting.

[0005] In addition, some multi-functional scissors have appeared on the market, such as "A semi-folding fruit tree grafting knife" with publication number CN201274673Y, which includes a folding knife and a fixed pruning shear. The folding knife has a grafting hand saw, a small splitting knife and a branch grafting bark-picking knife, which are installed at one end of the outer shell by a cylindrical pin and a washer; the pruning shear is fixed at the other end of the outer shell.

[0006] However, existing gardening shears still have some problems. For grafting, shorter handles are needed for easier operation, while pruning requires longer handles to increase leverage and reduce the operator's workload. Current shears often only meet one of these needs, making it difficult to simultaneously handle both grafting and pruning. Although some shears use detachable designs to allow for different handle lengths, this is cumbersome and prone to losing parts. Furthermore, some shears with telescopic mechanisms have poor stability during use, affecting the effectiveness of the work. Therefore, there is an urgent need for gardening shears that are simple in structure, easy to operate, and capable of simultaneously meeting the needs of both grafting and pruning. Utility Model Content

[0007] The purpose of this utility model is to address the above-mentioned problems by providing a grafting and pruning scissors.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A grafting and pruning dual-purpose shears includes two shear blades connected by connecting rivets, and handles are connected to the ends of the two shear blades. The handles are composed of a connecting part and an extension part. The connecting part is connected to the end of the shear blades, and the extension part is hollow and has an extension arm structure inside.

[0010] In the above-mentioned grafting and pruning dual-purpose shears, the extension arm structure includes a storage cavity disposed in the extension section, the storage cavity having an opening on the side away from the connecting section, and the extension arm being slidably connected inside the storage cavity.

[0011] In the above-mentioned grafting and pruning scissors, a sliding groove is provided on the inner side of the extension section, and a pull rod that slides in cooperation with the sliding groove is fixed to the front end of the extension arm, with the outer end of the pull rod extending to the outside of the extension section.

[0012] In the above-mentioned grafting and pruning dual-purpose scissors, the storage cavity is also provided with an extension arm limiting structure.

[0013] In the above-mentioned grafting and pruning dual-purpose shears, the extension arm limiting structure includes a limiting rod disposed on the side of the storage cavity near the connecting part, and the limiting rod can be inserted into the limiting groove inside the extension arm.

[0014] In the above-mentioned grafting and pruning dual-purpose scissors, the storage cavity is also provided with an extension section for reinforcement.

[0015] In the above-mentioned grafting and pruning scissors, the extension reinforcement structure includes several annular reinforcing ribs spaced apart along the length direction of the extension and several straight reinforcing ribs arranged circumferentially along the annular reinforcing ribs.

[0016] In the above-mentioned grafting and pruning scissors, the straight reinforcing rib is parallel to the length direction of the extension.

[0017] In the above-mentioned grafting and pruning dual-purpose shears, the ring-shaped reinforcing rib, the straight reinforcing rib, and the handle are integrally injection molded.

[0018] In the above-mentioned grafting and pruning scissors, a spring is also provided between the two handles.

[0019] Compared with existing technologies, the advantages of this utility model are:

[0020] 1. By designing the handle as an adjustable structure consisting of a connecting part and an extension part, and setting a telescopic extension arm structure in the extension part, the length of the scissors handle can be adjusted according to different work requirements.

[0021] 2. When grafting, the extension arm can be retracted into the storage cavity to keep the handle shorter, improving the flexibility and accuracy of operation; when pruning, the extension arm can be pulled out of the storage cavity to extend the handle length, increase the lever arm, and reduce the labor intensity of the user.

[0022] 3. By setting up a sliding groove and a pull rod cooperative structure, the extension arm can be extended and retracted in a simple and quick manner.

[0023] 4. The stability of the extension arm during use is ensured by the extension arm limiting structure.

[0024] 5. The strength and durability of the extension section are improved by reinforcing the structure through the extension section.

[0025] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the extension arm of this utility model when it is retracted;

[0027] Figure 2 This is a schematic diagram of the structure of the extension arm of this utility model when it is extended;

[0028] Figure 3 yes Figure 1 Enlarged diagram of point A in the middle.

[0029] In the diagram, the components are: 1. Connecting rivet; 2. Scissor blade; 3. Handle; 4. Connecting part; 5. Extension part; 6. Extension arm structure; 7. Storage cavity; 8. Extension arm; 9. Slide groove; 10. Pull rod; 11. Limiting rod; 12. Limiting groove; 13. Annular reinforcing rib; 14. Straight reinforcing rib; and 15. Spring. Detailed Implementation

[0030] like Figures 1-3 As shown, a grafting and pruning dual-purpose scissors includes two scissor blades 2 connected by connecting rivets 1. The ends of the two scissor blades 2 are connected to handles 3. The handles 3 are composed of a connecting part 4 and an extension part 5. The connecting part 4 is connected to the end of the scissor blades 2. The extension part 5 is hollow and has an extension arm structure 6 inside.

[0031] In this invention, by designing the handle as an adjustable structure consisting of a connecting part and an extension part, and by setting a retractable extension arm structure in the extension part, the length of the scissors handle can be adjusted according to different work requirements. Compared with the prior art, the grafting and pruning dual-purpose scissors of this invention effectively solves the problem of limited use caused by the fixed handle length, and significantly improves the practicality and adaptability of the tool.

[0032] Specifically, the blades of this grafting and pruning dual-purpose shears are made of high-carbon steel and have undergone surface quenching treatment, achieving a hardness of HRC58-62 to ensure excellent cutting performance and durability. The two blades are connected by stainless steel rivets with a diameter of 6mm, ensuring a secure connection and good rotational flexibility.

[0033] Each scissor blade has a handle attached to its end. The handle consists of a connecting part and an extension part. The connecting part is made of polypropylene and is tightly connected to the end of the scissor blade through an embedded structure. The connecting part is 50mm long, 25mm wide, and 15mm thick, and its surface is designed with anti-slip texture to improve grip comfort and stability during use.

[0034] The extension section and the connecting section are integrally molded, also made of polypropylene, with a length of 120mm, an outer diameter of 30mm, and a wall thickness of 3mm. The extension section has a hollow cylindrical design, forming an internal storage cavity to accommodate the extension arm structure. The outer surface of the extension section is coated with a 1mm thick rubber anti-slip layer to improve grip and operational stability during use.

[0035] Specifically, the extension arm structure 6 includes a storage cavity 7 disposed within the extension portion 5. The storage cavity 7 has an opening on the side away from the connecting portion 4, and the extension arm 8 is slidably connected within the storage cavity 7. During grafting operations, the extension arm can be retracted into the storage cavity, keeping the handle shorter and improving operational flexibility and precision. During pruning operations, the extension arm can be pulled out of the storage cavity, extending the handle length, increasing the leverage arm, and reducing the user's labor intensity.

[0036] The inner diameter of the storage cavity is 24mm, and its length is the same as the extension section, i.e., 120mm. The opening diameter of the storage cavity on the side away from the connecting part is 24mm, the same as the inner diameter of the storage cavity, facilitating the extension arm's telescopic operation. The extension arm is made of aluminum alloy, with a length of 200mm and an outer diameter of 23mm, forming a 1mm gap with the inner diameter of the storage cavity to ensure smooth sliding within the cavity. The surface of the extension arm is anodized to improve corrosion resistance and wear resistance. One end of the extension arm has a rubber anti-slip cap, and the other end is fixedly connected to the pull rod.

[0037] Specifically, a sliding groove 9 is provided on the inner side of the extension section 5, and a pull rod 10 that slides in cooperation with the sliding groove 9 is fixedly connected to the front end of the extension arm 8, with the outer end of the pull rod 10 extending to the outer side of the extension section 5. By providing the cooperation structure of the sliding groove and the pull rod, the extension and retraction operation of the extension arm is simple and quick.

[0038] The slide groove is set along the length of the extension section, with a width of 5mm, a depth of 3mm, and a length of 100mm. The slide groove is located on the side of the extension section, starting 20mm from the end of the extension section. The pull rod is made of stainless steel, with a diameter of 4mm and a length of 40mm. One end is threaded to the front end of the extension arm, and the other end extends outward from the extension section and has a 15mm diameter circular button. The button surface is covered with rubber material to improve operating comfort. The pull rod slides in conjunction with the slide groove to control the extension and retraction position of the extension arm.

[0039] Preferably, the storage cavity 7 is further provided with an extension arm limiting structure, which includes a limiting rod 11 disposed on the side of the storage cavity 7 near the connecting part 4. The limiting rod 11 can be inserted into the limiting groove 12 inside the extension arm 8. The extension arm limiting structure ensures the stability of the extension arm during use.

[0040] The limiting groove is 4mm deep, 4mm wide, and 15mm long, located on the inner wall of the extension arm near the pull rod end. When the extension arm is in its maximum extended state, the limiting rod inserts into the limiting groove to prevent the extension arm from completely detaching from the storage cavity, ensuring safe use.

[0041] Preferably, the receiving cavity 7 is further provided with an extension reinforcement structure, which includes several annular reinforcing ribs 13 spaced apart along the length direction of the extension 5 and several straight reinforcing ribs 14 arranged circumferentially along the annular reinforcing ribs 13. The straight reinforcing ribs 14 are parallel to the length direction of the extension 5. The extension reinforcement structure improves the strength and durability of the extension. The annular reinforcing ribs 13, the straight reinforcing ribs 14 and the handle 3 are integrally injection molded.

[0042] Annular reinforcing ribs are spaced apart along the length of the extension, each rib being 2mm thick and 3mm high, with a spacing of 20mm between them. Straight reinforcing ribs are arranged circumferentially along the annular reinforcing ribs. These straight reinforcing ribs are parallel to the length of the extension, 2mm thick, 3mm high, and the same length as the extension. The intersections of the straight and annular reinforcing ribs form a grid structure, significantly improving the structural strength and rigidity of the extension and preventing deformation during use.

[0043] The ring-shaped reinforcing ribs, straight reinforcing ribs, and handle are integrally injection molded from polypropylene, ensuring structural integrity and stability through a one-piece injection molding process. This one-piece injection molding process simplifies the production process, reduces production costs, and simultaneously improves product quality and durability.

[0044] Preferably, a spring 15 is also provided between the two handles 3. The spring is made of stainless steel, with a wire diameter of 1mm, an outer diameter of 15mm, a length of 50mm, and a spring force coefficient of 0.8N / mm. The two ends of the spring are fixed to the inner side of the connection part of the two handles respectively. Through the spring force, the two handles can automatically return to their original position after being released, improving the convenience of operation and the efficiency of use.

[0045] The grafting and pruning dual-purpose shears are used as follows: When close-range pruning is needed, the extension arm can be completely retracted into the extension section, and the shear blade can be directly operated by holding the handle; when long-range pruning is needed, the lever can be pulled to slide the extension arm out from the extension section, extending the operating distance for easy pruning of branches at higher or farther locations. The extension arm's extension length can be adjusted according to actual needs and fixed in the desired position by the cooperation of the lever and the sliding groove.

[0046] This grafting and pruning shears features a simple structure and is easy to operate. Its extended arm design enables both close-range and long-range pruning, significantly improving the efficiency and convenience of gardening operations. Simultaneously, the reinforced design of the extended section ensures structural stability and durability during use, extending the product's lifespan.

[0047] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0048] Although this article frequently uses terms such as connecting rivet 1, scissor blade 2, handle 3, connecting part 4, extension part 5, extension arm structure 6, storage cavity 7, extension arm 8, slide groove 9, pull rod 10, limiting rod 11, limiting groove 12, annular reinforcing rib 13, straight reinforcing rib 14, spring 15, etc., these terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would be contrary to the spirit of this utility model.

Claims

1. A grafting and pruning dual-purpose pair of scissors, comprising two scissor blades (2) connected by connecting rivets (1), characterized in that, Two scissor blades (2) are connected to handles (3) at their ends. The handles (3) consist of a connecting part (4) and an extension part (5). The connecting part (4) is connected to the ends of the scissor blades (2). The extension part (5) is hollow and has an extension arm structure (6) inside. The extension arm structure (6) includes a storage cavity (7) inside the extension part (5). The storage cavity (7) has an opening on the side away from the connecting part (4). An extension arm (8) is slidably connected inside the storage cavity (7). The extension part (5) is provided with a sliding groove (9) on the inner side. The front end of the extension arm (8) is fixedly connected with a pull rod (10) that slides with the sliding groove (9). The outer end of the pull rod (10) extends to the outside of the extension part (5). The storage cavity (7) is also provided with an extension arm limiting structure. The extension arm limiting structure includes a limiting rod (11) provided on the side of the storage cavity (7) near the connecting part (4). The limiting rod (11) can be inserted into the limiting groove (12) in the extension arm (8).

2. The grafting and pruning dual-purpose scissors according to claim 1, characterized in that, The storage cavity (7) is also provided with an extension reinforcement structure.

3. The grafting and pruning dual-purpose scissors according to claim 2, characterized in that, The extended reinforcement structure includes a plurality of annular reinforcing ribs (13) spaced apart along the length direction of the extended portion (5) and a plurality of straight reinforcing ribs (14) arranged circumferentially along the annular reinforcing ribs (13).

4. The grafting and pruning dual-purpose scissors according to claim 3, characterized in that, The straight reinforcing rib (14) is parallel to the length direction of the extension (5).

5. The grafting and pruning dual-purpose scissors according to claim 4, characterized in that, The annular reinforcing rib (13), the straight reinforcing rib (14) and the handle (3) are integrally injection molded.

6. The grafting and pruning dual-purpose scissors according to claim 1, characterized in that, A spring (15) is also provided between the two handles (3).

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