A sturdy sickle

Abstract

This utility model discloses a securely connected sickle, comprising a blade, a handle, and a tapered insert. The rear end of the blade has a through hole whose diameter gradually increases from the middle to both ends. The through hole consists of a forward tapered hole in the rear portion and a reverse tapered hole in the front portion. The head of the handle has corresponding forward tapered and reverse tapered sections. The reverse tapered section has a central insertion hole and an opening surrounding the insertion hole, dividing the reverse tapered section into at least two parts. When the tapered insert is connected to the insertion hole, it can expand the reverse tapered section. When the head of the handle is inserted into the through hole at the rear end of the blade, the forward and reverse tapered sections respectively engage in the forward and reverse tapered holes. This utility model, through the forward and reverse tapered positions, creates opposing pulling forces, securely connecting the head of the handle to the rear end of the blade.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural tools, specifically relating to a sturdy sickle. Background Technology

[0002] A sickle typically consists of a blade and a wooden handle, and is generally used for harvesting wheat, rice, and cutting grass and firewood in forests. It is widely used in rural areas.

[0003] Most sickles on the market today have the front end of the wooden handle inserted directly into a tapered hole (the diameter of which gradually decreases from front to back) at the rear of the blade. Then, rivets are used to secure the handle to the blade from the side. However, during swinging, the blade tends to detach forward, easily causing the handle and blade to loosen at the tapered hole, affecting usability. Especially in the field, this loosening often leads to the blade detaching from the handle and flying off during a swing, potentially injuring others. Furthermore, the detached blade is very difficult to find in the wild. Utility Model Content

[0004] The purpose of this invention is to provide a sickle with a stable connection.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A securely connected sickle includes a blade and a handle, characterized in that it further includes a tapered insert. The rear end of the blade has a through hole with a diameter that gradually increases from the middle to both ends. The through hole consists of a forward tapered hole in the rear part and a reverse tapered hole in the front part. The head of the handle has a corresponding forward tapered section and a reverse tapered section. The reverse tapered section has an insertion hole in the middle and an opening around the insertion hole. The opening divides the reverse tapered section into at least two parts. When the tapered insert is connected in the insertion hole, it can open the reverse tapered section. When the head of the handle is inserted into the through hole at the rear end of the blade, the forward tapered section and the reverse tapered section respectively fit into the forward tapered hole and the reverse tapered hole.

[0007] A further technical solution of this utility model is: the remaining part of the handle located behind the head is a cone shape with a diameter that gradually increases from front to back.

[0008] In other technical solutions, the cross-sectional shape of the handle can be square, circular, elliptical, or polygonal, and the rear shape of the handle can be irregular. The handle can be made of wood, composite materials, metal, or plastic.

[0009] Figure 6The DE section is the remaining portion 2.5 of the handle located behind the head; the EF section is a forward-tapered segment 2.4; and the FG section is a reverse-tapered segment 2.1 (the FG section is a cylindrical shape with a substantially equal diameter when the tapered insert is not inserted, and its diameter is close to the minimum diameter of the reverse-tapered hole 1.3; the FG section is only stretched and deformed into a tapered shape when the tapered insert is inserted). In another embodiment, the DE section can also be a cylindrical shape with the same diameter.

[0010] A further technical solution of this utility model is that the diameter of the conical insert gradually decreases from head to tail.

[0011] A further technical solution of this utility model is: the reverse tapered section of the handle is provided with four openings, which divide the reverse tapered section into four parts.

[0012] In another technical solution, the opening can be formed by the natural splitting of the reverse conical segment under the squeezing action of the conical insert.

[0013] A further technical solution of this utility model is as follows: the rear end of the blade body is provided with two arc-shaped connecting pieces that bend toward one side of the blade body and merge together. The arc-shaped connecting pieces are integral with the blade body, and the inner side of the arc-shaped connecting pieces forms a forward conical hole and a reverse conical hole.

[0014] A further technical solution of this utility model is: the conical insert is a conical bolt or a conical pin.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention features a through hole at the rear end of the blade body, consisting of a forward conical hole and a reverse conical hole. Correspondingly, a forward conical section and a reverse conical section are provided at the head of the handle. When the head of the handle is inserted into the through hole at the rear end of the blade body, the forward conical section and the reverse conical section respectively engage with the forward conical hole and the reverse conical hole. When a conical insert is inserted into the insertion hole, the reverse conical section will open up, and the forward and reverse conical positions will form opposite pulling forces, firmly connecting the head of the handle to the rear end of the blade body.

[0017] The connection structure between the blade and the handle of this utility model is also applicable to similar tools such as hammers, saws, hook knives, hoes, rakes, and axes. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the sickle according to Embodiment 1 of this utility model;

[0019] Figure 2 This is an explosion diagram of the sickle according to Embodiment 1 of this utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of the sickle according to Embodiment 1 of this utility model;

[0021] Figure 4 This is a cross-sectional schematic diagram of the blade body according to Embodiment 1 of this utility model;

[0022] Figure 5 This is a three-dimensional schematic diagram of the conical insert according to Embodiment 1 of this utility model;

[0023] Figure 6 This is a front view schematic diagram of the handle of Embodiment 1 of this utility model;

[0024] Figure 7 This is a schematic diagram of the conical insert of Embodiment 2 of this utility model.

[0025] Meaning of the labels in the attached diagram:

[0026] 1-Cut body; 1.1-Arc-shaped connecting piece; 1.2-Forward tapered hole; 1.3-Reverse tapered hole; 2-Handle; 2.1-Reverse tapered section; 2.2-Insertion hole; 2.3-Opening; 2.4-Forward tapered section; 2.5-The remaining part of the handle located behind the head; 3-Tapered insert. Detailed Implementation

[0027] The present invention will be further described below with reference to embodiments.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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 element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Example 1:

[0032] like Figures 1 to 3 The image shows a securely connected sickle according to this embodiment, which includes a blade body 1, a handle 2, and a conical insert 3.

[0033] The blade body 1 is made of metal and has a crescent shape, similar to a traditional sickle. At the rear end of the blade body 1, there are two arc-shaped connecting pieces 1.1 that curve towards one side of the blade body 1 and merge together. The arc-shaped connecting pieces 1.1 are integral with the blade body 1, and a through hole is formed on the inner side of each arc-shaped connecting piece 1.1. (The text abruptly ends here.) Figure 4 As shown, the through hole consists of a forward tapered hole 1.2 in the rear part and a reverse tapered hole 1.3 in the front part. Figure 4 The AB section is a reverse conical hole 1.3, and the BC section is a forward conical hole 1.2 (position B is the boundary point between the forward conical hole 1.2 and the reverse conical hole 1.3). The inclination directions of the forward conical hole 1.2 and the reverse conical hole 1.3 are opposite, which causes the diameter of the through hole at the rear end of the cutter body 1 to gradually increase from the middle to both ends. In this embodiment, the through hole at the rear end of the cutter body 1 is a circular hole that runs through both ends.

[0034] Handle 2 is made of wood, composite material, or metal, and is generally cylindrical, such as... Figure 6 As shown, the head of the handle 2 is provided with a forward tapered section 2.4 and a reverse tapered section 2.1 corresponding to the forward tapered hole 1.2 and the reverse tapered hole 1.3. In this embodiment, the remaining part 2.5 of the handle located behind the head is a tapered shape with a diameter that gradually increases from front to back, which allows for a better grip when using the handle 2. Figure 6 The DE section is the remaining portion 2.5 of the handle located behind the head; the EF section is a forward-tapered segment 2.4; and the FG section is a reverse-tapered segment 2.1 (the FG section is a cylindrical shape with a substantially equal diameter when the tapered insert is not inserted, and its diameter is close to the minimum diameter of the reverse-tapered hole 1.3; the FG section is only stretched and deformed into a tapered shape when the tapered insert is inserted). In another embodiment, the DE section can also be a cylindrical shape with the same diameter.

[0035] In this embodiment, the reverse tapered section 2.1 is provided with a central insertion hole 2.2 and four openings 2.3. The four openings 2.3 are located on the four sides of the insertion hole 2.2 and extend along the length of the handle 2. The openings 2.3 penetrate into the insertion hole 2.2. The reverse tapered section 2.1 is divided into four parts by the openings 2.3, so that the reverse tapered section 2.1 can be spread open to a certain extent to form a reverse tapered shape.

[0036] In this embodiment, the tapered insert 3 is an internal hexagon bolt with a blind hole in the head, which is rotated using an internal hexagon tool. Of course, in other embodiments, the tapered insert 3 can also be a hexagonal bolt, a slotted bolt, or a bolt with other head shapes.

[0037] In this embodiment, the insertion hole 2.2 is a threaded hole.

[0038] like Figure 5 As shown, in this embodiment, the diameter of the conical insert 3 gradually decreases from beginning to end. The diameter of the insertion hole 2.2 is matched with the diameter of the conical insert 3. When the conical insert 3 is screwed into the insertion hole 2.2, the reverse conical section 2.1 of the handle 2 needs to be opened (the reverse conical section 2.1 is nearly cylindrical when not connected to the conical insert 3, and is opened to form a reverse conical shape after connection). Typically, the diameter of the insertion hole 2.2 is larger than the minimum diameter of the conical insert 3, but smaller than the maximum diameter of the conical insert 3. In a preferred embodiment, the diameter of the insertion hole 2.2 can be slightly larger than the minimum diameter of the conical insert 3.

[0039] like Figure 3 As shown, in this embodiment, when connecting the sickle, the head of the handle 2 is inserted into the through hole at the rear end of the blade 1. The forward tapered section 2.4 and the reverse tapered section 2.1 fit into the forward tapered hole 1.2 and the reverse tapered hole 1.3, respectively. The forward tapered section 2.4 basically fills the forward tapered hole 1.2. Then, the tapered insert 3 is connected in the insertion hole 2.2. As the tapered insert 3 is continuously screwed into the insertion hole 2.2, the reverse tapered section 2.1 of the handle 2 is continuously stretched open, eventually making the reverse tapered section 2.1 basically fill the reverse tapered hole 1.3. The forward and reverse tapered positions will form opposite pulling forces, thereby firmly connecting the head of the handle 2 to the rear end of the blade 1, and the handle 2 will not detach from the blade 1. Even if it becomes loose after a period of use, continuing to tighten the tapered insert 3 will make the connection secure again. Furthermore, by removing the conical insert 3, the blade body 1 can be separated from the handle 2, making it very convenient to replace the handle 2.

[0040] Example 2:

[0041] In Example 2, the conical insert 3 is a conical pin, and the insertion hole 2.2 in the middle of the reverse conical section 2.1 is a round hole. The conical pin is directly pressed into the round hole, causing the reverse conical section 2.1 to crack and be stretched to form a conical shape.

[0042] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A securely connected sickle, comprising a blade and a handle, characterized in that: It also includes a tapered insert. The rear end of the blade body has a through hole with a diameter that gradually increases from the middle to both ends. The through hole consists of a forward tapered hole in the rear part and a reverse tapered hole in the front part. The head of the handle has a corresponding forward tapered section and a reverse tapered section. The reverse tapered section has an insertion hole in the middle and an opening around the insertion hole. The opening divides the reverse tapered section into at least two parts. When the tapered insert is inserted into the insertion hole, it can open the reverse tapered section. When the head of the handle is inserted into the through hole at the rear end of the blade body, the forward tapered section and the reverse tapered section respectively fit into the forward tapered hole and the reverse tapered hole.

2. The securely connected sickle according to claim 1, characterized in that: The remaining portion of the handle behind the head is a cone shape with a diameter that gradually increases from front to back.

3. The securely connected sickle according to claim 1, characterized in that: The diameter of the tapered insert gradually decreases from one end to the other.

4. The securely connected sickle according to claim 1, characterized in that: The rear end of the blade body is provided with two arc-shaped connecting pieces that bend toward one side of the blade body and merge together. The arc-shaped connecting pieces are integral with the blade body, and the inner side of the arc-shaped connecting pieces forms the forward conical hole and the reverse conical hole.

5. The securely connected sickle according to claim 1, characterized in that: The tapered insert is a tapered bolt or a tapered pin.

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