Pruning shear blade positioning structure

Abstract

The utility model belongs to the technical field of pruning shear installation, and particularly relates to a pruning shear blade positioning structure. Comprising a shell, a first blade, a second blade and a positioning assembly. The first blade and the second blade are installed at the head end of the shell and fixed together through bolts, the positioning assembly is installed at the top of the first blade and comprises a positioning cover plate and a positioning groove, the positioning groove is installed on the first blade through bolts, and the positioning cover plate is fixedly connected with the positioning cover plate. The positioning cover plate is installed on the positioning groove, the positioning groove stretches into the shell, and the positioning cover plate abuts against the outer wall of the shell. In practical application, the first blade and the second blade are positioned on the shell through the positioning groove, and meanwhile, the positioning groove, the first blade and the second blade are protected through the positioning cover plate, so that external direct contact is avoided, and the mounting efficiency of the pruning shears is improved.

Description

Technical Field

[0001] This utility model belongs to the field of pruning shear installation technology, specifically relating to a pruning shear blade positioning structure. Background Technology

[0002] In the field of gardening tools, pruning shears are a commonly used manual or power-driven tool for trimming the branches of trees and shrubs. Traditional pruning shears typically consist of two hinged blades, one fixed and one movable, which are closed using a lever principle or a power device to cut the plant material. However, in existing technology, the blade mounting structure of pruning shears often has some problems, such as inaccurate blade positioning, low installation efficiency, and blades easily loosening during use.

[0003] Especially for professional users who need to frequently adjust or replace blades, the traditional pruning shears' blade fixing method is not secure enough, and after long-term use, the blade may shift position due to vibration or other external forces, affecting the cutting effect. In addition, the exposed blade not only increases the risk of accidental injury, but also hinders the maintenance and upkeep of the blade.

[0004] A pruning shear mounting and positioning structure, patent publication number CN219322949U, includes a blade assembly, a gearbox, and a drive wheel rotatably connected within the gearbox for driving the blade assembly. The drive wheel has a first positioning hole, and the gearbox has a positioning part. The pruning shear mounting and positioning structure also includes a positioning element for passing through the first positioning hole and inserting into the positioning part to position the drive wheel. The blade assembly includes a blade holder and several blades. Each blade has a first elongated hole and a second positioning hole for the positioning element to pass through, thus fitting the first elongated hole with the drive wheel. The blade holder has a third positioning hole for the positioning element to pass through and position the blade holder. In this device, the top of the blade is exposed, failing to completely cover the blade, and the positioning element does not completely cover the entire blade, resulting in poor blade positioning. Therefore, those skilled in the art urgently need to solve these technical problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is that, in the above-mentioned prior art, when installing the blade of the pruning shears, the top of the blade is exposed and cannot be completely covered, and at the same time, the positioning component does not completely cover the entire blade, resulting in poor blade positioning effect.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A pruning shear blade positioning structure includes a housing, a first blade, a second blade, and a positioning assembly. The first blade and the second blade are mounted on the front end of the housing and are fixed together by bolts. The positioning assembly is mounted on the top of the first blade. The positioning assembly includes a positioning cover plate and a positioning groove. The positioning groove is mounted on the first blade by bolts, and the positioning cover plate is mounted on the positioning groove. The positioning groove extends into the housing, and the positioning cover plate abuts against the outer wall of the housing.

[0008] By adopting the above technical solution, and fixing blade one and blade two together with bolts, and utilizing the positioning groove deep inside the housing, the stability of the blades during use is ensured, reducing the possibility of loosening or positional displacement caused by external forces. The positioning cover plate is installed on the positioning groove and abuts against the outer wall of the housing, effectively preventing external objects from directly contacting the blades, reducing the risk of accidental injury to users or bystanders. The design of the positioning component not only serves a positioning function but also provides a certain degree of protection for the blades, reducing the impact of external factors such as dust and moisture on the blades, thereby extending the service life of the blades. If it is necessary to replace or adjust the blades, the operation can be easily completed by simply removing the relevant bolts. This makes daily maintenance more convenient and quick, and also allows users to perform simple repairs themselves.

[0009] Furthermore, the housing is provided with a baffle plate, the baffle plate is provided with a mounting groove, and the positioning cover plate abuts against the mounting groove.

[0010] By adopting the above technical solution, the baffle plate, as an additional support component, increases the rigidity of the entire device, especially at the connection between blade one and blade two. This helps improve the stability of the pruning shears during cutting, ensuring that the blades do not undergo unnecessary displacement due to force. More precise positioning can be achieved by embedding the positioning cover plate into the mounting groove on the baffle plate. This precise fit reduces assembly errors, ensuring accurate blade alignment every time it is used, improving work efficiency and cutting quality. The baffle plate and its mounting groove provide an additional safety barrier for the positioning cover plate, further preventing external objects from contacting the internal blade assembly. Even in high-intensity working environments, it effectively protects users from accidental injury. With the clearly defined mounting groove as a guide, the installation of the positioning cover plate becomes intuitive and easy to operate. Workers do not need to worry about positional deviations, thereby speeding up production and reducing assembly difficulty.

[0011] Furthermore, the side wall of the positioning groove is provided with a mounting hole, the positioning cover plate is attached to the positioning groove, and the positioning groove is connected to the positioning cover plate by bolts passing through the mounting hole.

[0012] By adopting the above technical solution, the bolted connection provides a high-strength fixing method, ensuring a tight and stable connection between the positioning cover plate and the positioning groove. This helps prevent loosening or detachment due to vibration or external forces during use. The presence of mounting holes allows the positioning cover plate to be accurately aligned and fixed in the positioning groove, thus ensuring the positional accuracy of blade one and blade two. This precise fit is crucial for maintaining cutting performance. The bolted connection design allows for quick assembly and disassembly, easily accomplished without special tools. This is very convenient for users who need to regularly inspect, clean, or replace blades, and also simplifies the production and maintenance process. Because the bolted connection provides additional safety, it effectively prevents the positioning cover plate from accidentally popping open or shifting, reducing operational risks. Even in high-intensity working environments, it ensures the safety of internal components. The robust connection reduces relative movement between parts, lowers the possibility of wear, and thus extends the service life of the entire device. Furthermore, good sealing prevents dust and moisture from entering, protecting the internal mechanisms from corrosion.

[0013] Furthermore, the positioning cover plate includes an isolation surface, a transition surface, and an abutment surface. The transition surface is located at the bottom of the isolation surface, and the abutment surface is provided at the bottom of the transition surface. The abutment surface is in contact with the inner side of the positioning groove. There are two transition surfaces in total, and the bolts that position the first blade and the second blade are located between the transition surfaces.

[0014] By adopting the above technical solution, the positioning cover design, through its unique isolation surface, transition surface, and abutment surface structure, significantly enhances the sealing and stability of the pruning shear blade positioning structure. The isolation surface, acting as a physical barrier, effectively protects internal components from dust and moisture; while the abutment surface, tightly fitting the inner side of the positioning groove, further strengthens the sealing effect and prevents foreign objects from entering. The transition surface, acting as a bridge connecting the isolation surface and the abutment surface, ensures the overall structural stability of the positioning cover and reduces the risk of loosening caused by external impacts or vibrations; the double transition surface design provides additional support points, making installation more stable and providing better support for the bolted connection between the blades. Placing the fixing bolts of blade one and blade two between the two transition surfaces achieves uniform force distribution, avoiding localized stress concentration, thereby extending the service life of the bolts and blades. This layered design not only makes the installation of the positioning cover intuitive and easy to operate, allowing for easy assembly even in confined spaces, but also facilitates fine-tuning of the blade position or other adjustments, increasing flexibility. Furthermore, the tight fit between the contact surface and the inner side of the positioning groove, as well as the effective wrapping of the bolt by the transition surface, greatly reduces the risk of accidental displacement or detachment of the blade, improving safety during use. This design not only optimizes the functionality and user experience of the pruning shears, but also enhances the product's reliability and market competitiveness.

[0015] Furthermore, a blade guard is provided at the top of the blade, and the blade guard is fixed in the positioning groove by bolts.

[0016] By adopting the above technical solution, the blade guard directly covers and protects the top edge of blade one, preventing accidental damage to the blade when not in use. This not only extends the blade's lifespan but also ensures the blade is in optimal condition every time it is used. During transportation, storage, or when not in use, the blade guard effectively prevents users or others from accidentally coming into contact with the sharp blade, reducing the risk of accidental cuts and improving the overall safety of the tool. By fixing the blade guard in the positioning groove, the structural integrity of the entire blade assembly is further enhanced. This additional support helps reduce blade vibration and displacement during high-intensity use, ensuring the accuracy and efficiency of cutting operations. The design of the blade guard completely covers the top of blade one, reducing the possibility of dust, leaves, and other debris entering between the blades and simplifying daily cleaning. Furthermore, when maintenance or blade replacement is required, the blade guard can be easily removed simply by loosening the bolts, making it convenient and quick.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model secures the first and second blades together with bolts and uses a positioning groove to penetrate deep into the housing. Combined with the mounting groove on the baffle plate and the double transition surface design, it ensures the stability of the blades during use and the accuracy of cutting. The multiple supports and precise cooperation not only reduce the possibility of loosening or positional displacement caused by external forces, but also improve work efficiency and cutting quality. At the same time, it provides additional safety protection for operation in high-intensity working environments.

[0019] 2. By setting up a blade guard plate and a positioning cover plate, this utility model achieves complete protection of the top of the blade, preventing the blade from being accidentally damaged when not in use, and effectively preventing users or bystanders from coming into contact with the sharp blade, significantly reducing the risk of accidental cuts. The design of the blade guard plate and positioning components also reduces the impact of external factors such as dust and moisture on the blade, extending the blade's service life and ensuring that the blade is in optimal condition every time it is used.

[0020] 3. This utility model uses bolted connections for the blade guard, positioning cover, and the entire positioning assembly, allowing for quick and intuitive assembly and disassembly without the need for special tools. This simplifies the production process, speeds up assembly, reduces assembly difficulty, and greatly facilitates users' daily maintenance, cleaning, or simple repairs. It also enhances the user experience, reduces long-term maintenance costs, and increases the product's market competitiveness. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the assembly of blade one and blade two of this utility model;

[0023] Figure 3 This is a schematic diagram of the assembly of the positioning component and blade one and blade two of this utility model;

[0024] Figure 4 This is a schematic diagram of the positioning groove structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the positioning cover plate of this utility model.

[0026] Among them, 1-shell; 11-grid plate; 12-mounting groove; 2-blade one; 3-blade two; 4-positioning assembly; 41-positioning groove; 411-mounting hole; 42-positioning cover plate; 421-isolation surface; 422-transition surface; 423-abutting surface; 5-blade guard plate. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0028] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a pruning shear blade positioning structure is provided. Blade 2 and blade 3 are mounted on the front end of the housing 1, and are fixed together by bolts to ensure the stability of the blades during use. The positioning assembly 4 consists of a positioning groove 41 and a positioning cover plate 42. The positioning groove 41 is bolted onto blade 2 and extends into the housing 1, while the positioning cover plate 42 is mounted on the positioning groove 41 and abuts against the outer wall of the housing 1, providing protection and sealing. A baffle plate 11 is provided on the housing 1, with a mounting groove 12. The positioning cover plate 42 is embedded in and abuts against this mounting groove 12, increasing the rigidity and stability of the entire device and providing an additional safety barrier. The side wall of the positioning groove 41 has mounting holes 411, through which the positioning cover plate 42 is fixed to the positioning groove 41 by bolts, forming a tight and stable connection to prevent the positioning cover plate 42 from loosening or falling off. The positioning cover plate 42 includes an isolation surface 421, a transition surface 422, and an abutment surface 423. The transition surface 422 is located at the bottom of the isolation surface 421, and the abutment surface 423 is provided at its bottom. The abutment surface 423 is in contact with the inner side of the positioning groove 41, enhancing sealing and structural stability. A space is left between the two transition surfaces 422 to accommodate the bolts fixing the first blade 2 and the second blade 3, achieving uniform force distribution and avoiding local stress concentration. The top of the first blade 2 is provided with a blade guard plate 5, which is fixed in the positioning groove 41 by bolts, providing additional protection for the blade, preventing damage to the blade edge when not in use, and improving the overall safety of the tool. The first blade 2 and the second blade 3 are installed at the front end of the housing 1, and the two are fixed together by bolts, ensuring the stability of the blade during use. The positioning assembly 4 consists of a positioning groove 41 and a positioning cover plate 42. The positioning groove 41 is installed on the first blade 2 by bolts and extends into the housing 1, while the positioning cover plate 42 is installed on the positioning groove 41 and abuts against the outer wall of the housing 1, serving a protective and sealing function. A baffle plate 11 is provided on the housing 1, and the baffle plate 11 has a mounting groove 12. The positioning cover plate 42 is embedded in and abuts against this mounting groove 12, which increases the rigidity and stability of the entire device and provides an additional safety barrier. The side wall of the positioning groove 41 has mounting holes 411. The positioning cover plate 42 is fixed to the positioning groove 41 by bolts passing through these mounting holes 411, forming a tight and stable connection to prevent the positioning cover plate 42 from loosening or falling off. The positioning cover plate 42 includes an isolation surface 421, a transition surface 422, and an abutment surface 423. The transition surface 422 is located at the bottom of the isolation surface 421, and the abutment surface 423 is provided at its bottom. The latter is in contact with the inner side of the positioning groove 41, which enhances the sealing and structural stability.A space is left between the two transition surfaces 422 to accommodate the bolts that fix the first blade 2 and the second blade 3, achieving uniform force distribution and avoiding local stress concentration. The first blade 2 is provided with a blade guard plate 5, which is fixed in the positioning groove 41 by bolts, providing additional protection for the blade, preventing damage to the blade when not in use, and improving the overall safety of the tool.

[0030] In terms of working principle, blade 2 and blade 3 are firmly fixed together by bolts, ensuring that their relative positions do not change. This provides a high-strength fixing method, making the blades stable during cutting operations and reducing vibration and external force effects. The positioning groove 41 extends deep into the housing 1, providing additional support points for the blades, ensuring that the blades do not undergo unnecessary displacement during use, enhancing the stability of the overall structure, and providing a precise positioning reference for the blades.

[0031] The positioning cover plate 42 is installed on the positioning groove 41 and embedded in the mounting groove 12 of the baffle plate 11 on the housing 1. This embedded design further ensures the positional accuracy of the blade, reduces assembly errors, and ensures that the blade can be accurately aligned every time it is used, thereby improving work efficiency and cutting quality. The positioning cover plate 42 includes an isolation surface 421, a transition surface 422, and an abutment surface 423. The transition surface 422 is located at the bottom of the isolation surface 421, and the abutment surface 423 is provided at its bottom. The latter is in close contact with the inner side of the positioning groove 41, which not only enhances the sealing and structural stability, but also ensures that the bolt connection between the first blade 2 and the second blade 3 can withstand greater forces, thereby maintaining long-term reliability.

[0032] In addition, a blade guard 5 is provided on the top of blade 2 and is fixed in the positioning groove 41 by bolts, providing additional physical protection for the blade and preventing damage to the blade when not in use. This also improves the overall safety of the tool and reduces the risk of accidental injury. Through the synergistic effect of the above components, this pruning shears blade positioning structure not only ensures the stability of the blade installation and the accuracy of the cutting operation, but also significantly improves the safety and convenience of daily use, optimizes the functionality of the product, enhances the user experience and the reliability of the product, and is suitable for various gardening work environments, especially performing excellently in professional application scenarios that require frequent blade adjustments or replacements.

[0033] In terms of workflow, during the installation phase, blade 2 and blade 3 are bolted to the front end of housing 1. Then, positioning assembly 4, including positioning groove 41 and positioning cover plate 42, is installed, ensuring that positioning cover plate 42 is embedded in the mounting groove 12 on the baffle plate 11. Finally, blade guard plate 5 is bolted to the top of blade 2. During use, positioning assembly 4 and blade guard plate 5 work together to ensure the stability and safety of the blade during use, reducing vibration and external force effects, and maintaining cutting accuracy. During maintenance, when cleaning or replacing the blade is required, simply loosening the relevant bolts allows for easy removal of positioning cover plate 42 and blade guard plate 5, facilitating maintenance and upkeep.

[0034] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A pruner blade positioning structure characterized by: Including shell (1), blade one (2), blade two (3) and positioning assembly (4);The first end of the shell (1) is provided with the blade one (2) and the blade two (3), the blade one (2) and the blade two (3) are fixed together by bolts, the top of the blade one (2) is provided with the positioning assembly (4), the positioning assembly (4) includes positioning cover plate (42) and positioning groove (41), the positioning groove (41) is installed on the blade one (2) by bolts, the positioning cover plate (42) is installed on the positioning groove (41), the positioning groove (41) is inserted into the shell (1), and the positioning cover plate (42) is abutted on the outer wall of the shell (1).

2. The pruner blade positioning structure according to claim 1, characterized by: The shell (1) is provided with a baffle (11), the baffle (11) is provided with a mounting groove (12), and the positioning cover plate (42) is abutted in the mounting groove (12).

3. The pruner blade positioning structure of claim 1, wherein: The side wall of the positioning groove (41) is provided with a mounting hole (411), the positioning cover plate (42) is covered on the positioning groove (41), the positioning groove (41) is connected with the positioning cover plate (42) by bolts through the mounting hole (411).

4. The pruner blade positioning structure of claim 3, wherein: The positioning cover plate (42) includes isolation surface (421), transition surface (422) and abutment surface (423), the transition surface (422) is located at the bottom of the isolation surface (421), the transition surface (422) is provided with the abutment surface (423) at the bottom, the abutment surface (423) is in contact with the inner side of the positioning groove (41), and the transition surface (422) is provided with two, the bolts for positioning the blade one (2) and the blade two (3) are located between the transition surfaces (422).

5. The pruner blade positioning structure of claim 1, wherein: The top of the blade one (2) is provided with a blade guard (5), and the blade guard (5) is fixed in the positioning groove (41) by bolts.

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