Adjustable sickle

Abstract

The adjustable sickle comprises a blade and a sickle handle, a through positioning hole and a through sliding hole are formed in the bottom end of the blade, a limiting hole and an adjusting hole are correspondingly formed in the two sides of the head of the sickle handle, and bolts are arranged between the positioning hole and the limiting hole and between the sliding hole and the adjusting hole respectively and penetrate through the middle. A gasket is arranged at the position, between the limiting hole and the adjusting hole, of one side of the knife handle, a fixing strip is arranged at the position, located on the outer side of an opening of the adjusting hole, of the bottom end of the gasket, the blade and the knife handle are connected through bolts of the positioning hole, the limiting hole, the sliding hole and the adjusting hole, and the sliding hole is an arc-shaped hole. The adjusting hole is a linear rounded rectangular hole and allows the blade to slide within a certain range and lock the angle. The gasket is arranged on one side of the cutter handle, the fixing strip is arranged on the outer side of the adjusting hole, the surface of the fixing strip is a concave-convex edge or an oval protrusion, and the fixing strip is matched with the polygonal nut to achieve anti-skid locking.

Description

Technical Field

[0001] This utility model relates to the field of agricultural tools, specifically an adjustable sickle. Background Technology

[0002] The sickle, a traditional agricultural tool, is widely used for harvesting crops and pruning vegetation. Traditional sickles typically consist of a fixed-angle blade directly connected to a handle. While simple in structure, this design has significant drawbacks: the angle is not adjustable, and the fixed connection between the blade and handle results in a single blade tilt angle, making it difficult to adapt to different crop heights, densities, or user habits, thus affecting cutting efficiency and limiting functionality. Different sizes of sickles are required for specific scenarios (such as pruning low shrubs or cutting branches at height), increasing user purchase and carrying costs. Furthermore, the structural stability is insufficient; some adjustable sickles use threaded knobs or pin locks, which are prone to loosening due to vibration after prolonged use, posing a safety hazard. Utility Model Content

[0003] The purpose of this invention is to provide an adjustable sickle to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An adjustable sickle includes a blade and a handle. The blade has a through-hole positioning hole and a sliding hole at its bottom end. The handle has a limit hole and an adjustment hole on both sides of its head. Bolts are respectively installed between the positioning hole and the limit hole, and between the sliding hole and the adjustment hole, so as to assemble and fix the blade and the handle. A shim is installed on one side of the handle between the limit hole and the adjustment hole. A fixing strip is installed at the bottom end of the shim outside the opening of the adjustment hole.

[0006] As a further embodiment of this utility model:

[0007] The positioning hole and the limiting hole are both round holes, the sliding hole is an arc-shaped hole, and the adjusting hole is a straight-line rounded rectangular hole.

[0008] As a further embodiment of this utility model:

[0009] One end of the gasket is fixedly connected between the bottom end of the limiting hole and the tool handle, forming an integral structure with the tool handle.

[0010] As a further embodiment of this utility model:

[0011] The fixing strip is configured as evenly arranged concave and convex edges or elliptical protrusions.

[0012] As a further embodiment of this utility model:

[0013] One end of the bolt installed on the sliding hole and the adjusting hole is set as a polygonal fixing nut, and the outer side of the polygonal fixing nut can be inserted into the concave and convex edges or elliptical protrusions of the fixing strip.

[0014] As a further embodiment of this utility model:

[0015] The blade and handle are both integrally formed.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] In use, the blade and handle are connected by bolts through positioning holes, limiting holes, sliding holes, and adjusting holes. The sliding holes are arc-shaped, and the adjusting holes are straight, rounded rectangular holes, allowing the blade to slide within a certain range and lock at the angle. A shim is installed on one side of the handle, and a fixing strip is located on the outside of the adjusting hole. Its surface has concave and convex edges or elliptical protrusions, which cooperate with the polygonal nut to achieve anti-slip locking. During adjustment, an L-shaped hex wrench is used to loosen the bolts. After sliding the blade to the desired angle, the nut is tightened so that it is engaged in the groove of the fixing strip, ensuring stability and reliable adjustment. The interlocking design of the fixing strip and the polygonal nut, combined with tool-assisted tightening, ensures a firm angle lock and strong adaptability. The combination of the arc-shaped sliding hole and the straight adjusting hole can adapt to various angle requirements. The structure is optimized, the shim is set to improve the connection strength, and the one-piece molding design reduces the risk of failure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the blade head and handle assembly of this utility model.

[0019] Figure 2 This is a schematic diagram of the knife handle of this utility model.

[0020] Figure 3 This is a schematic diagram of the other side of the handle of this utility model.

[0021] In the diagram: 1. Blade; 2. Handle; 101. Positioning hole; 102. Sliding hole; 201. Limiting hole; 202. Adjusting hole; 203. Fixing strip; 204. Shim. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 3In this embodiment of the utility model, an adjustable sickle includes a blade 1 and a handle 2. The bottom end of the blade 1 is provided with a through positioning hole 101 and a sliding hole 102. The two sides of the head of the handle 2 are respectively provided with a limiting hole 201 and an adjustment hole 202. A bolt is provided between the positioning hole 101 and the limiting hole 201, and between the sliding hole 102 and the adjustment hole 202, respectively, so that the blade 1 and the handle 2 can be assembled and fixed. A shim 204 is provided on one side of the handle 2 between the limiting hole 201 and the adjustment hole 202. A fixing strip 203 is provided at the bottom end of the shim 204 outside the opening of the adjustment hole 202.

[0024] In the above scheme, the blade 1 and the handle 2 are connected by two sets of bolts: positioning hole 101 + limiting hole 201 and sliding hole 102 + adjusting hole 202, forming a detachable design that facilitates maintenance and replacement of parts. A shim 204 is provided on one side of the handle 2 between the limiting hole 201 and the adjusting hole 202 to provide additional support and enhance connection stability. The blade slides relative to the handle within a certain range to achieve angle adjustment.

[0025] The positioning hole 101 and the limiting hole 201 are round holes, providing a fixed support point; the sliding hole 102 is an arc-shaped hole.

[0026] The above design is adapted to the blade rotation trajectory; the adjustment hole 202 is a straight-line rounded rectangular hole, providing a linear adjustment range.

[0027] One end of the gasket 204 is fixedly connected between the bottom end of the limiting hole 201 and the tool holder 2, forming an integral structure with the tool holder 2.

[0028] In the above scheme, the gasket 204 can be integrated with the tool holder 2 through processes such as welding, stamping, or integral casting with the tool holder to enhance the connection strength.

[0029] The fixing strip 203 is configured with evenly distributed concave and convex edges or elliptical protrusions.

[0030] In the above solution, the concave and convex edges or elliptical protrusions of the fixing strip 203 form a discontinuous engagement with the polygonal nut, locking the position through engagement and avoiding the problem of loosening of traditional threads.

[0031] One end of the bolt installed on the sliding hole 102 and the adjusting hole 202 is set as a polygonal fixing nut, and the outer side of the polygonal fixing nut can be inserted into the concave and convex edges or elliptical protrusions of the fixing strip 203.

[0032] Use an L-shaped hex wrench to loosen the bolt in the adjustment hole 202, adjust the blade to the required angle along the arc path of the sliding hole 102, tighten the bolt, and let the polygonal nut snap into the groove of the fixing strip 203 to complete the locking.

[0033] Meanwhile, both the blade 1 and the handle 2 are integrally molded, resulting in high overall structural strength and preventing dangerous problems caused by breakage during production.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable sickle comprising a blade (1) and a handle (2), characterized in that, The blade (1) is provided with a through positioning hole (101) and a sliding hole (102) at the bottom end, the handle (2) is provided with a limiting hole (201) and an adjusting hole (202) at both sides of the head, the positioning hole (101) and the limiting hole (201), the sliding hole (102) and the adjusting hole (202) are respectively provided with a bolt through middle part, so that the blade (1) and the handle (2) can be assembled and fixed, one side of the handle (2) is provided with a gasket (204) between the limiting hole (201) and the adjusting hole (202), and the bottom end of the gasket (204) is provided with a fixed strip (203) outside the opening of the adjusting hole (202).

2. An adjustable sickle according to claim 1, wherein, The positioning hole (101) and the limiting hole (201) are both circular holes, the sliding hole (102) is an arc hole, and the adjusting hole (202) is a straight line type round rectangular hole.

3. An adjustable sickle according to claim 1, wherein, One end of the gasket (204) is fixedly connected between the bottom end of the limiting hole (201) and the handle (2), and forms an integrated structure with the handle (2).

4. An adjustable sickle according to claim 1 wherein, The fixed strip (203) is arranged as uniformly arranged concave-convex edges or oval protrusions.

5. An adjustable sickle according to claim 4, wherein, One end of the bolt installed on the sliding hole (102) and the adjusting hole (202) is provided as a polygonal fixed nut, and the outer side of the polygonal fixed nut can be clamped into the concave-convex edges or oval protrusions of the fixed strip (203).

6. An adjustable sickle according to any one of claims 1 to 5, wherein, The blade (1) and the handle (2) are both integrally formed.

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