A garden maintenance long handle pruning saw

Abstract

The utility model relates to the technical field of pruning saw, disclose a garden maintenance long handle pruning saw. In the application a garden maintenance long handle pruning saw includes: saw blade, installation part, clamping component, guide structure, first elastic part, bracing bar subassembly, the application a garden maintenance long handle pruning saw, through the combination design of clamping portion, reset portion and first elastic part, can exert the continuous and stable positive pressure to saw blade in saw cutting process. Clamping portion is opposite to set up with saw blade, and the rebound force of first elastic part is combined, can exert the rebound force of first elastic part between saw blade and branch, ensure that the saw tooth is fully contacted with the wood fiber. When the operator pulls apart clamping component, first elastic part stores energy, and bracing bar subassembly props up clamping component, then in saw cutting, unlock bracing bar subassembly, the elastic potential energy of first elastic part gradually releases, converts into the pressure compensation to saw blade, significantly reduces the sawing strip " skidding " phenomenon, promotes sawing efficiency.

Description

Technical Field

[0001] This application relates to the field of pruning saw technology, for example to a garden maintenance long-handled pruning saw. Background Technology

[0002] The descriptions in this section are provided only as background information relating to this disclosure and do not constitute prior art.

[0003] Long-handled pruning saws are commonly used tools in garden maintenance and fruit tree management. Their extended handles allow operators to stand on the ground and cut branches high up on trees, avoiding the safety risks associated with climbing. They are convenient to operate and highly safe.

[0004] However, existing long-handled pruning saws suffer from the following problem: low sawing efficiency when cutting thicker branches. The root cause lies in the unreasonable mechanical structure. Specifically, to achieve high-altitude operation, the saw handle must be designed to be long, resulting in a long lever arm from the operator's grip to the saw blade. According to the lever principle, when the operator applies the same amount of force, the effective sawing pressure transmitted to the saw blade decreases significantly as the lever arm lengthens. The sawing process is essentially one that requires continuous and sufficient pressure to efficiently cut wood fibers. When the effective pressure is insufficient, the saw blade is prone to "slipping" on the branches or making empty strokes, failing to effectively "eat" into the wood. This leads to a waste of most of the energy in the sawing action and a slow sawing process.

[0005] Currently, this type of pruning saw can only smoothly cut branches with smaller diameters. The aforementioned problems become particularly pronounced when dealing with branches 50mm or thicker. Operators often need to spend several minutes performing repetitive sawing motions to complete a single cut. This significantly reduces work efficiency, and to overcome insufficient pressure, operators must continuously apply greater force and maintain unnatural postures. Prolonged work can lead to rapid fatigue of the arm, shoulder, and lower back muscles, and even cause strain injuries. Utility Model Content

[0006] This application provides a long-handled pruning saw for garden maintenance. Through a combination of a clamping part, a resetting part, and a first elastic element, it can apply continuous and stable positive pressure to the saw blade during sawing. The clamping part is positioned opposite the saw blade, and combined with the rebound force of the first elastic element, it can apply the rebound force of the first elastic element between the saw blade and the branch, ensuring full contact between the saw teeth and the wood fibers. When the operator pulls open the clamping assembly, the first elastic element stores energy, and the support rod assembly supports the clamping assembly. Subsequently, during sawing, the support rod assembly is unlocked, and the elastic potential energy of the first elastic element is gradually released, converting into pressure compensation on the saw blade, significantly reducing saw blade slippage and improving sawing efficiency.

[0007] A garden maintenance long-handled pruning saw includes: a saw blade, a mounting part, a clamping assembly, a guide structure, a first elastic element, and a support rod assembly; The saw blade has serrations on one side; The mounting section is detachably connected to the saw blade on one side and to the handle on the other side; The clamping assembly includes a clamping part, a reset part, and a gripping part connected in sequence from end to end: the length of the clamping part is similar to that of the saw blade and is positioned opposite to the saw teeth; the reset part is positioned opposite to the mounting part; and the gripping part is positioned opposite to the handle. A guide structure, connected to the reset part and the mounting part, defines the reset part to move away from or closer to the mounting part along the direction of the guide structure; The first elastic element is connected to the reset part and the mounting part, and provides a force that moves the reset part closer to the mounting part; The strut assembly has one end connected to the mounting part and the other end detachably engaged with the reset part.

[0008] In some embodiments, the strut assembly includes: The upper end of the rod is rotatably connected to the mounting part. A limiting component is provided on the reset part, which includes a first abutting surface and a second abutting surface. The first abutting surface abuts against the lower side of the rod body, and the second abutting surface abuts against the lower end surface of the rod body. The second elastic element, connected to the reset part and the rod body, provides a force that brings the rod body closer to the first abutment surface.

[0009] In some embodiments, the limiting member includes: The third contact surface is positioned opposite to the reset part, and the rod slides between the two. The fourth contact surface is set opposite to the first contact surface, and the rod slides between the two. A through hole is provided on the second abutment surface to allow the lower end of the rod to pass through.

[0010] In some embodiments, the lower side of the saw blade is arc-shaped, the saw teeth are disposed on the arc-shaped side, and the clamping part has a clamping surface corresponding to the shape of the saw blade.

[0011] In some embodiments, the guide structure includes: The slide bar connects to the mounting part at the upper end and extends downward at the lower end. The sliding sleeve is slidably mounted on the slide rod and connected to the reset part on its side.

[0012] In some embodiments, the handle is connected to a telescopic arm or a multi-section short arm, the short arms being interconnected via threaded interfaces.

[0013] In some embodiments, the clamping part, the reset part, and the gripping part are an integral structure.

[0014] In some embodiments, the clamping part is a saw blade.

[0015] In some embodiments, the clamping part, the resetting part, and the gripping part are an integral long rod structure.

[0016] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are considered similar elements. The drawings do not constitute a limitation of scale, and wherein: Figure 1 This is a schematic diagram of a three-dimensional structure of a garden maintenance long-handled pruning saw provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram of the main structure of a garden maintenance long-handled pruning saw provided in an embodiment of this disclosure; Figure 3 yes Figure 2 A magnified view of part A in the diagram; Figure 4 This is a three-dimensional schematic diagram of the open state of a garden maintenance long-handled pruning saw provided in an embodiment of this disclosure; Figure 5 yes Figure 4 A magnified view of section B in the diagram; Figure 6 This is a schematic diagram of the contracted shape of a garden maintenance long-handled pruning saw provided in an embodiment of this disclosure; Figure 7 This is a three-dimensional schematic diagram of the contracted shape of a garden maintenance long-handled pruning saw provided in this embodiment.

[0018] Figure label: 11. Short arm; 12. Saw blade; 121. Saw teeth; 13. Clamping assembly; 14. Handle; 15. Mounting part; 16. First elastic element; 17. Rod body; 171. Second elastic element; 18. Sliding rod; 19. Sliding sleeve; 21. Limiting element; 211. Third abutment surface; 212. Second abutment surface; 1221. Through hole; 213. Fourth abutment surface; 214. First abutment surface. Detailed Implementation

[0019] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0020] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0021] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better describing the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this disclosure according to the specific circumstances.

[0022] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0023] Unless otherwise stated, the term "multiple" means two or more.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0025] Combination Figure 1-7As shown, this embodiment of the present disclosure provides a garden maintenance long-handled pruning saw, including: a saw blade 12, a mounting part 15, a clamping assembly 13, a guide structure, a first elastic element 16, and a support rod assembly; The saw blade 12 has serrations 121 on one side; the saw blade 12 has a blade structure and can be a straight saw blade 12 or an arc-shaped saw blade 12.

[0026] Mounting part 15 is detachably connected to saw blade 12 on one side and to handle 14 on the other side. Mounting part 15 is a U-shaped channel steel of a certain length. The front end of the channel is detachably connected to saw blade 12 by screws, facilitating the replacement of new saw blade 12. The rear end is connected to handle 14, which can be a threaded connection or a fixed connection such as welding. Handle 14 includes a metal rod and a grip sleeve. The grip sleeve is made of rubber or plastic. The metal rod is welded to mounting part 15.

[0027] The clamping assembly 13 includes a clamping part, a resetting part, and a gripping part connected in sequence from end to end. The length of the clamping part is similar to that of the saw blade 12 and is positioned opposite to the saw teeth 121. The resetting part is positioned opposite to the mounting part 15, and the gripping part is positioned opposite to the handle 14. The clamping assembly 13 is a round rod with a smooth surface. The clamping assembly 13 mainly functions to cooperate with the saw blade 12 to clamp the tree branch and provide clamping force. During repeated sawing, the frictional force in the length direction is the resistance, and the smaller the better. A smooth round rod is most suitable in this regard. Of course, other shapes are also possible, such as strip plates, polygonal columns, or even the clamping part can be set as another saw blade 12 with the saw teeth 121 of the two saw blades 12 facing each other, sawing the tree branch from two directions. However, the frictional force is greatly increased, and it may not be convenient to use.

[0028] A guide structure is connected to the reset part and the mounting part 15, and limits the reset part to move away from or close to the mounting part 15 along the direction of the guide structure; The first elastic element 16, connected to the reset part and the mounting part 15, provides a force that brings the reset part closer to the mounting part 15. The first elastic element 16 is a constant force spring assembly. Constant force springs are often used in pull-out steel measuring tapes. A characteristic of constant force springs is that the recovery force remains stable regardless of the length of the pull-out section, unlike the linear change in force of ordinary compression springs. Constant force springs provide stable spring force and can be designed to provide the required spring force. If the spring force of one first elastic element 16 is insufficient, multiple first elastic elements 16 can be designed and fixed to the mounting part 15 by simply increasing the length of the mounting part 15 and the reset part. An example is the hanging stainless steel constant force spring produced by Ningbo Haishu Samsung Spring Co., Ltd.

[0029] The strut assembly has one end connected to the mounting part 15 and the other end detachably abutting against the reset part.

[0030] Through the combined design of the clamping part, the reset part, and the first elastic element 16, continuous and stable positive pressure can be applied to the saw blade 12 during sawing. The clamping part is arranged opposite to the saw blade 12, and combined with the rebound force of the first elastic element 16, the rebound force of the first elastic element 16 can be applied between the saw blade 12 and the branch, ensuring full contact between the saw teeth 121 and the wood fibers. When the operator pulls open the clamping assembly 13, the first elastic element 16 stores energy, and the support rod assembly supports the clamping assembly 13. Subsequently, during sawing, the support rod assembly is unlocked, and the elastic potential energy of the first elastic element 16 is gradually released, which is converted into pressure compensation on the saw blade 12, significantly reducing the saw blade "slippage" phenomenon and improving sawing efficiency.

[0031] In some embodiments, the strut assembly includes: The upper end of rod 17 is rotatably connected to mounting part 15; The limiting member 21 is disposed on the reset part and includes a first abutting surface 214 and a second abutting surface 212. The first abutting surface 214 abuts against the lower side of the rod 17, and the second abutting surface 212 abuts against the lower end face of the rod 17. The limiting member 21 is approximately a rectangular box that lacks an upper side or lacks both the upper and rear sides. The abutting surface is the inner wall of the rectangular box. Therefore, there can be four or five abutting surfaces. If two sides are missing, there are four abutting surfaces. The second abutting surface 212 is the inner side of the lower wall of the box.

[0032] The second elastic element 171, connected to the reset part and the rod 17, provides a force that brings the rod 17 closer to the first abutment surface 214. When the clamping assembly 13 is pulled open, after the lower end of the rod 17 slides from below the second abutment surface 212 to above it, the second elastic element 171 causes the rod 17 to rotate, with its lower part abutting against the first abutment surface 214. At this point, the clamping assembly 13 can be released, and it slides upwards. However, the second abutment surface 212 abuts against the lower end face of the rod 17, preventing the clamping assembly 13 from sliding upwards. A branch is placed between the clamping assembly 13 and the saw blade 12, and the saw blade 12 is pushed upwards. When the branch abuts against the rod 17, it pushes upwards, causing the rod 17 to rotate and move away from the second abutment surface 212. The clamping assembly 13 can then slide upwards, and the first elastic element 16 releases its elastic force, providing clamping force.

[0033] In some embodiments, the limiting member 21 includes: The third abutment surface 211 is disposed opposite to the reset part or the fifth abutment surface, and the rod 17 slides between the two; The fourth abutment surface 213 is disposed opposite to the first abutment surface 214, and the rod 17 slides between the two. A through hole 1221 is provided on the second abutment surface 212, allowing the lower end of the rod 17 to pass through.

[0034] In some embodiments, the lower side of the saw blade 12 is arc-shaped, the saw teeth 121 are disposed on the arc-shaped side, and the clamping part has a clamping surface corresponding to the shape of the saw blade 12.

[0035] In some embodiments, the guide structure includes: The upper end of the slide rod 18 is connected to the mounting part 15, and the lower end extends downward. The sliding sleeve 19 is slidably mounted on the sliding rod 18 and is connected to the reset part on its side.

[0036] In some embodiments, the handle 14 is connected to a telescopic arm or a multi-section short arm 11, the short arms 11 being interconnected via threaded interfaces.

[0037] In some embodiments, the clamping part, the reset part, and the gripping part are an integral structure.

[0038] In some embodiments, the clamping part is a saw blade 12.

[0039] In some embodiments, the clamping part, the resetting part, and the gripping part are an integral long rod structure.

[0040] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of this disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A garden maintenance long-handled pruning saw, characterized in that, include: The saw blade has serrations on one side; The mounting section is detachably connected to the saw blade on one side and to the handle on the other side; The clamping assembly includes a clamping part, a reset part, and a gripping part connected in sequence from end to end: the length of the clamping part is similar to that of the saw blade and is positioned opposite to the saw teeth; the reset part is positioned opposite to the mounting part; and the gripping part is positioned opposite to the handle. A guide structure, connected to the reset part and the mounting part, limits the reset part to move away from or closer to the mounting part along the direction of the guide structure; The first elastic element is connected to the reset part and the mounting part, and provides a force that moves the reset part closer to the mounting part; The strut assembly has one end connected to the mounting part and the other end detachably engaged with the reset part.

2. The garden maintenance long-handled pruning saw according to claim 1, characterized in that, The strut assembly includes: The upper end of the rod is rotatably connected to the mounting part. A limiting component is provided on the reset part, which includes a first abutting surface and a second abutting surface. The first abutting surface abuts against the lower side of the rod body, and the second abutting surface abuts against the lower end surface of the rod body. The second elastic element, connected to the reset part and the rod body, provides a force that brings the rod body closer to the first abutment surface.

3. A garden maintenance long-handled pruning saw according to claim 2, characterized in that, The limiting component includes: The third contact surface is positioned opposite to the reset part, and the rod slides between the two. The fourth contact surface is set opposite to the first contact surface, and the rod slides between the two. A through hole is provided on the second abutment surface to allow the lower end of the rod to pass through.

4. A garden maintenance long-handled pruning saw according to claim 1, characterized in that, The lower side of the saw blade is arc-shaped, and the saw teeth are located on the arc-shaped side. The clamping part has a clamping surface corresponding to the shape of the saw blade.

5. A garden maintenance long-handled pruning saw according to claim 1, characterized in that, The guiding structure includes: The slide bar connects to the mounting part at the upper end and extends downward at the lower end. The sliding sleeve is slidably mounted on the slide rod and connected to the reset part on its side.

6. A garden maintenance long-handled pruning saw according to claim 1, characterized in that, The handle is connected to the telescopic arm or multiple short arms, and the short arms are interconnected through threaded interfaces.

7. A garden maintenance long-handled pruning saw according to claim 1, characterized in that, The clamping part, the resetting part, and the gripping part are an integral structure.

8. A garden maintenance long-handled pruning saw according to claim 1, characterized in that, The clamping part is a saw blade.

9. A garden maintenance long-handled pruning saw according to claim 1, characterized in that, The clamping part, the reset part, and the gripping part are an integral long rod structure.

Images