A connecting rod and an implement

Abstract

The utility model relates to mechanical connection technical field especially relates to a connecting rod and farm tool, the farm tool includes main body, top cap and a plurality of connecting rods, the connecting rod includes main rod body, first rod piece and second rod piece, and one end of main rod body connects first rod piece, and the other end connects second rod piece, wherein, the inside wall of first rod piece forms first concave -convex structure through extrusion forming, and the outside wall of second rod piece forms the second concave -convex structure matched with first concave -convex structure through extrusion forming. One connecting rod can be connected with another connecting rod through its own first concave -convex structure or second concave -convex structure, and the connection firmness is significantly improved. While one connecting rod is connected with another connecting rod, the first through hole of the first rod piece of one connecting rod and the elastic member of the second rod piece of another connecting rod are matched with each other, form mechanical limiting structure, the long-term stability of connection is significantly improved, and the service life of the farm tool is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of mechanical connection technology, and in particular to a connecting rod and agricultural implement. Background Technology

[0002] Agricultural implements are indispensable basic tools in agricultural production, typically including hoes, shovels, and rakes. The handheld parts of these basic tools are generally assembled from multiple handles joined end-to-end for easy gripping and application of force. Currently, the assembly of these handles mostly uses plug-in or socket joints. While this structure is simple and easy to manufacture, it leads to problems such as insufficiently secure connections and easy loosening during actual use. Furthermore, due to the lack of effective reinforcement methods, the handheld handles assembled using existing methods cannot maintain a tight connection for long periods. With prolonged use, the connection performance gradually declines, thus shortening the lifespan of the agricultural implements. Utility Model Content

[0003] In view of this, the present invention proposes a connecting rod and agricultural implement, which aims to solve the problem that the connection between existing handheld rods is not strong enough and it is difficult to maintain a tight connection for a long time.

[0004] In a first aspect, this utility model proposes a connecting rod, including a main rod body, a first rod member, and a second rod member. The first rod member is connected to one end of the main rod body, and the second rod member is connected to the other end of the main rod body. The main rod body has a uniform diameter, the first rod member has a uniform diameter that is slightly larger than the diameter of the main rod body, and the second rod member has a uniform diameter that is slightly smaller than the diameter of the main rod body. The first rod member has a hollow through structure, and the inner surface of its sidewall is provided with an extruded first concave-convex structure. The outer surface of the sidewall of the second rod member is provided with an extruded second concave-convex structure. The first concave-convex structure matches the second concave-convex structure. The sidewall of the first rod member is also provided with a first through hole, and the sidewall of the second rod member is also provided with a second through hole and an elastic element. When one of the connecting rods is connected to another connecting rod, the second concave-convex structure of one connecting rod fits into the first concave-convex structure of the other connecting rod. At the same time, the elastic element of one connecting rod extends out of the second through hole of one connecting rod and the first through hole of the other connecting rod, so that one connecting rod remains fixed relative to the other connecting rod.

[0005] In one possible implementation, the main rod, the first rod, and the second rod are all cylindrical structures.

[0006] In one possible implementation, the first through hole is located at the axial midpoint of the sidewall of the first rod.

[0007] In one possible implementation, the second through hole is located at the axial midpoint of the sidewall of the second rod.

[0008] In one possible implementation, the second rod is a hollow through structure, and the elastic element includes a protrusion and a U-shaped spring. The two ends of the spring abut against the inner surface of the side wall of the second rod, and one end of the spring is also connected to the protrusion. The protrusion can extend out or be flush with the second through hole.

[0009] In one possible implementation, a strip extends from both ends of the reed.

[0010] In one possible implementation, the protrusion is a cylindrical structure.

[0011] In one possible implementation, the end of the cylindrical structure away from the second member has a rounded corner.

[0012] Secondly, this utility model proposes an agricultural implement, including a main body, a top cover, and several connecting rods as described in the first aspect. All the connecting rods are sequentially connected in a manner that the second concave-convex structure of one connecting rod fits into the first concave-convex structure of another connecting rod, and the elastic element of one connecting rod extends out of the second through hole of one connecting rod and connects to the first through hole of another connecting rod to form a complete handhold. The lower end of the top cover is fixedly connected to the upper end of the handhold, and the upper end of the main body is fixedly connected to the lower end of the handhold.

[0013] In one possible implementation, the farm implements include hoes, shovels, and rakes.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: A connecting rod and a farm implement, the farm implement including a main body, a top cover and several connecting rods, the connecting rod including a main rod body, a first rod member and a second rod member, the first rod member being connected to one end of the main rod body, the second rod member being connected to the other end of the main rod body, the main rod body having a uniform diameter, the first rod member having a uniform diameter and slightly larger than the diameter of the main rod body, the second rod member having a uniform diameter and slightly smaller than the diameter of the main rod body, the first rod member having a hollow through-structure and the inner surface of the sidewall having an extruded first concave-convex structure, the second ... The outer surface of the sidewall of the component is provided with an extruded second concave-convex structure, which matches the first concave-convex structure. The sidewall of the first rod is also provided with a first through hole, and the sidewall of the second rod is also provided with a second through hole and an elastic element. When one connecting rod is connected to another connecting rod, the second concave-convex structure of one connecting rod fits into the first concave-convex structure of the other connecting rod. At the same time, the elastic element of one connecting rod extends out of the second through hole of one connecting rod and the first through hole of the other connecting rod, so that one connecting rod remains fixed relative to the other connecting rod. It can be seen that one end of the main body of the connecting rod is connected to the first rod, and the other end is connected to the second rod. The inner sidewall of the first rod is formed by extrusion molding to create the first concave-convex structure, and the outer sidewall of the second rod is formed by extrusion molding to create a second concave-convex structure that matches the first concave-convex structure. A connecting rod can achieve a fitting connection with another connecting rod through its own first concave-convex structure or second concave-convex structure. This fitting connection method significantly improves the connection strength between connecting rods by embedding the protruding part into the recessed part and relying on the geometric shape and dimensional matching characteristics of the concave and convex structures to achieve mechanical locking. While one connecting rod is fitting into another, the first through hole of one connecting rod cooperates with the elastic element of the other connecting rod to form a mechanical limiting structure, thereby reinforcing the fitting connection and effectively improving its long-term stability. Furthermore, multiple connecting rods are sequentially connected end-to-end using the above fitting connection method, and the elastic element and the first through hole form a mechanical limiting structure to assemble a complete handle. Applying this handle to agricultural implements can significantly improve the connection strength and long-term stability of the implements, thereby extending their service life. Attached Figure Description

[0015] Figure 1 This is a first structural schematic diagram of the connecting rod provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the second structure of the connecting rod provided in an embodiment of the present utility model; Figure 3 This is a structural disassembly diagram of the connecting rod provided in an embodiment of the present utility model.

[0016] The annotations in the attached figures are explained as follows: 10. Main rod; 20. First rod; 21. First concave-convex structure; 22. First through hole; 30. Second rod; 31. Second concave-convex structure; 32. Second through hole; 33. Protrusion; 34. Spring. Detailed Implementation

[0017] The solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0018] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0019] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0020] Please refer to Figure 1-3 As shown, this utility model proposes a connecting rod, including a main rod body 10, a first rod member 20, and a second rod member 30. The first rod member 20 is connected to one end of the main rod body 10, and the second rod member 30 is connected to the other end of the main rod body 10. The main rod bodies 10 have a uniform diameter, the first rod member 20 has a uniform diameter that is slightly larger than the diameter of the main rod body 10, and the second rod member 30 has a uniform diameter that is slightly smaller than the diameter of the main rod body 10. The first rod member 20 has a hollow through structure, and the inner surface of its sidewall is provided with an extruded first concave-convex structure 21. The outer surface of the sidewall of the second rod member 30 is provided with an extruded second concave-convex structure 31. The first concave-convex structure 21 and the second concave-convex structure 31 are matched. The sidewall of the first rod member 20 is also provided with a first through hole 22, and the sidewall of the second rod member 30 is also provided with a second through hole 32 and an elastic element. When one of the connecting rods is connected to another connecting rod, the second concave-convex structure 31 of one connecting rod engages with the first concave-convex structure 21 of the other connecting rod. At the same time, the elastic element of one connecting rod extends out of the second through hole 32 of one connecting rod and the first through hole 22 of the other connecting rod, so that one connecting rod remains fixed relative to the other connecting rod.

[0021] Specifically, the diameter of the first rod 20 is slightly larger than that of the main rod 10. Its sidewall is formed by extrusion molding to create a first concave-convex structure 21 (this first concave-convex structure 21 is located on the inner surface of the sidewall and can also be called an inner concave-convex structure), so as to cooperate with the second concave-convex structure 31 on the outer wall of the second rod 30 to achieve a fitting connection between the connecting rods. The diameter of the second rod 30 is slightly smaller than that of the main rod 10. Its sidewall is formed by extrusion molding to create a second concave-convex structure 31 (this second concave-convex structure 31 is located on the outer surface of the sidewall and can also be called an outer concave-convex structure), so as to cooperate with the first concave-convex structure 21 on the inner wall of the first rod 20 to achieve a fitting connection between the connecting rods. Based on the concave-convex fitting relationship between the first concave-convex structure 21 and the second concave-convex structure 31, the specifications of all connecting rods can be kept consistent, which simplifies the processing technology and enables modular production.

[0022] Specifically, the elastic element is positioned directly opposite the second through hole 32. The elastic element of the second member 30 of one connecting rod cooperates with the first through hole 22 of the first member 20 of another connecting rod to achieve effective mechanical limiting and reinforce the fit between the two connecting rods. When one connecting rod establishes a fit with another connecting rod, and the elastic element of one connecting rod extends sequentially from the second through hole 32 of one connecting rod and the first through hole 22 of the other connecting rod due to its elasticity, the two connecting rods can achieve effective limiting on the basis of the fit connection, and one connecting rod cannot move relative to the other connecting rod.

[0023] Compared with the prior art, the connecting rod proposed in this embodiment has a main rod body 10 with one end connected to a first rod member 20 and the other end connected to a second rod member 30. The inner sidewall of the first rod member 20 is formed by extrusion molding to create a first concave-convex structure 21, and the outer sidewall of the second rod member 30 is formed by extrusion molding to create a second concave-convex structure 31 that matches the first concave-convex structure 21. One connecting rod can achieve a fitting connection with another connecting rod through its own first concave-convex structure 21 or second concave-convex structure 31. This fitting connection method significantly improves the connection strength between connecting rods by embedding the protruding part into the recessed part and relying on the geometric shape and dimensional matching characteristics of the concave-convex structure to achieve mechanical locking. While one connecting rod is fitting into another connecting rod, the first through hole 22 of one connecting rod cooperates with the elastic element of the other connecting rod to form a mechanical limiting structure, thereby reinforcing the fitting connection and effectively improving the long-term stability of the fitting connection. Furthermore, multiple connecting rods are sequentially connected end-to-end using the aforementioned fitting connection method, and a mechanical limiting structure is formed between the elastic element and the first through hole 22, assembling them into a single handle. Applying this handle to agricultural implements can significantly improve the connection firmness and long-term stability of the implements, thereby extending their service life.

[0024] In some embodiments of this application, the main rod 10, the first rod 20, and the second rod 30 are all cylindrical structures.

[0025] Specifically, the connecting rod consists of a main body 10, a first member 20, and a second member 30, all three being cylindrical structures. The main body 10, as the primary component of the connecting rod, has a consistent diameter, ensuring the overall stability and strength of the connecting rod structure. To further reduce the weight of the connecting rod and improve grip comfort, both the first member 20 and the second member 30 can be hollow and continuous. Alternatively, the main body 10 can also be hollow, achieving a balance between structural performance and lightweight design.

[0026] In some embodiments of this application, the first through hole 22 is located at the axial center of the side wall of the first rod 20.

[0027] Specifically, the first through hole 22 is located at the axial center of the side wall of the first member 20 to facilitate a more uniform distribution of stress, avoid stress concentration, and thus improve the overall strength and structural stability of the first member 20.

[0028] In some embodiments of this application, the second through hole 32 is located at the axial center of the side wall of the second rod 30.

[0029] Specifically, the second through hole 32 is located at the axial center of the side wall of the second member 30 to facilitate a more uniform distribution of stress, avoid stress concentration, and thus improve the overall strength and structural stability of the second member 30.

[0030] In some embodiments of this application, the second rod 30 is a hollow through structure, and the elastic element includes a protrusion 33 and a U-shaped spring 34. The two ends of the spring 34 abut against the inner surface of the side wall of the second rod 30, and one end of the spring 34 is also connected to the protrusion 33. The protrusion 33 can extend out or be flush with the second through hole 32.

[0031] Specifically, the protrusion 33 serves as the output end of the elastic deformation of the spring 34, and is used to cooperate with the first through hole 22 on another connecting rod to achieve a mechanical limiting function. The spring 34 is a thin and elastic metal sheet with good elastic deformation capability. The two ends of the U-shaped spring 34 abut against the inner wall of the second rod 30, and the abutment support at both ends causes the spring 34 to undergo a certain degree of elastic deformation. This elastic deformation drives the protrusion 33 to extend from the second through hole 32. When the protrusion 33 is subjected to external force, it can also retract to a position flush with the second through hole 32. The elastic member structure composed of the protrusion 33 and the U-shaped spring 34 is simple and highly feasible.

[0032] In some embodiments of this application, a strip extends from both ends of the reed 34.

[0033] Specifically, the strip-shaped piece increases the contact area between the two ends of the spring 34 and the inner surface of the side wall of the second rod 30, making the spring 34 fit more tightly against the inner wall of the second rod 30, further reducing the possibility of the spring 34 shifting or loosening due to vibration or external force during use, and ensuring the long-term effectiveness of the elastic element.

[0034] In some embodiments of this application, the protrusion 33 is a cylindrical structure.

[0035] Specifically, the cylindrical structure has good geometric symmetry and stable axial guiding effect, which can ensure the smooth expansion and contraction of the protrusion 33 in the first through hole 22 and the second through hole 32, reducing friction and jamming.

[0036] In some embodiments of this application, the end of the cylindrical structure away from the second rod 30 is provided with a rounded corner.

[0037] Specifically, the end of the cylindrical structure furthest from the second rod 30 is the area that directly contacts the user's finger, allowing the user to apply force to the elastic element. Rounding the corners in this area effectively reduces pressure concentration when the user contacts it, improving pressing comfort, making the fingertip feel smoother and softer, and avoiding discomfort caused by sharp edges.

[0038] The following are embodiments of the agricultural implement provided by this utility model. The embodiments of the agricultural implement and the embodiments of the connecting rod described above belong to the same concept. For details not fully described in the embodiments of the agricultural implement, please refer to the embodiments of the connecting rod described above.

[0039] This utility model proposes an agricultural implement, including a main body, a top cover, and several connecting rods as described above. All the connecting rods are connected in sequence to form a complete handhold by means of a second concave-convex structure 31 of one connecting rod fitting into the first concave-convex structure 21 of another connecting rod, and an elastic element of one connecting rod extending out of the second through hole 32 of one connecting rod and connecting to the first through hole 22 of another connecting rod. The lower end of the top cover is fixedly connected to the upper end of the handhold, and the upper end of the main body is fixedly connected to the lower end of the handhold.

[0040] Specifically, the main body is the core of the agricultural implement, responsible for its function. The top cover is fixedly connected to the upper end of the handle, sealing the top of the handle to prevent foreign objects from entering and protecting its internal structure. The handle is composed of several connecting rods joined together in a series of interlocking connections, and further secured by a mechanical limiting structure. The connecting rods are of uniform specifications, and their number can be determined according to actual needs, allowing for flexible adjustment of the handle's length to meet the needs of users of different heights and improve the implement's adaptability.

[0041] Compared with the prior art, the agricultural implement proposed in this embodiment has a handpiece made of multiple connecting rods connected end to end in a fitting manner, and is further fixed by a mechanical limiting structure, which can significantly improve the connection firmness and long-term stability of the agricultural implement, thereby extending the service life of the agricultural implement.

[0042] In some embodiments of this application, the farm implements include hoes, shovels, and rakes.

[0043] Specifically, hoes are mainly used for loosening soil and removing weeds. Shovels are mainly used for digging and shoveling soil. Rakes are mainly used for leveling land and clearing debris. These three are all basic tools commonly used in agricultural production, each undertaking different farming tasks. Of course, in addition to the three common agricultural tools mentioned above that require multiple connecting rods, there are many other agricultural tools that also require multiple connecting rods, which will not be listed here.

[0044] The agricultural implement proposed in this embodiment includes several connecting rods of uniform specifications in its handle. The first concave-convex structure 21 of the first member 20 of one connecting rod engages with the second concave-convex structure 31 of the second member 30 of another connecting rod to achieve a locking connection, forming a first layer of fixation that effectively prevents circumferential rotation between the two connecting rods. The first through hole 22 of the first member 20 of one connecting rod engages with the elastic element of the second member 30 of another connecting rod to achieve mechanical limiting, forming a second layer of fixation to further ensure the long-term stability of the locking connection between the two connecting rods. This dual-connection fixation ensures reliable connection and limiting fixation between the connecting rods, significantly improving the user experience.

[0045] It should be noted that the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0046] The above description is only a part or preferred embodiment of this utility model. Neither the text nor the drawings should limit the scope of protection of this utility model. All equivalent structural transformations made using the content of this utility model specification and drawings under the overall concept of this utility model, or direct / indirect applications in other related technical fields, are included within the scope of protection of this utility model.

Claims

1. A connecting rod, characterized in that, The device includes a main rod, a first rod, and a second rod. The first rod is connected to one end of the main rod, and the second rod is connected to the other end of the main rod. The main rods have a uniform diameter, the first rods have a uniform diameter that is slightly larger than the main rod diameter, and the second rods have a uniform diameter that is slightly smaller than the main rod diameter. The first rod is a hollow, through-structure with an extruded first concave-convex structure on the inner surface of its sidewall. The outer surface of the sidewall of the second rod has an extruded second concave-convex structure. The first and second concave-convex structures match each other. The sidewall of the first rod also has a first through hole, and the sidewall of the second rod also has a second through hole and an elastic element. When one of the connecting rods is connected to another connecting rod, the second concave-convex structure of one connecting rod fits into the first concave-convex structure of the other connecting rod. At the same time, the elastic element of one connecting rod extends out of the second through hole of one connecting rod and the first through hole of the other connecting rod, so that one connecting rod remains fixed relative to the other connecting rod.

2. A connecting rod according to claim 1, characterized in that, The main rod, the first rod, and the second rod are all cylindrical structures.

3. A connecting rod according to claim 1, characterized in that, The first through hole is located at the axial center of the side wall of the first rod.

4. A connecting rod according to claim 1, characterized in that, The second through hole is located at the axial center of the side wall of the second rod.

5. A connecting rod according to claim 1, characterized in that, The second rod is a hollow through structure. The elastic element includes a protruding part and a U-shaped spring. The two ends of the spring abut against the inner surface of the side wall of the second rod. One end of the spring is also connected to the protruding part. The protruding part can extend out or be flush with the second through hole.

6. A connecting rod according to claim 5, characterized in that, Both ends of the reed extend into strips.

7. A connecting rod according to claim 5, characterized in that, The protruding part has a cylindrical structure.

8. A connecting rod according to claim 7, characterized in that, The cylindrical structure has a rounded corner at the end away from the second member.

9. A type of agricultural implement, characterized in that, The device includes a main body, a top cover, and several connecting rods as described in any one of claims 1-8. All the connecting rods are sequentially connected in a manner that the second concave-convex structure of one connecting rod fits into the first concave-convex structure of another connecting rod, and the elastic element of one connecting rod extends out of the second through hole of one connecting rod and connects to the first through hole of another connecting rod to form a complete handhold. The lower end of the top cover is fixedly connected to the upper end of the handhold, and the upper end of the main body is fixedly connected to the lower end of the handhold.

10. A farm implement according to claim 9, characterized in that, The farm implements include hoes, shovels, and rakes.

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