Motorcycle engine crankshaft connecting rod assembly

Abstract

This utility model belongs to the field of crankshaft connecting rod technology and discloses a crankshaft connecting rod assembly for a motorcycle engine. It includes two base plates, with an assembly mechanism shared on the inner sides of both base plates. One side of one base plate has a meshing mechanism. The assembly mechanism includes a long half-shaft and a short half-shaft, one end of which is fixedly connected to one side of each of the two base plates. A counterweight is provided on one side of each base plate, and a crank pin is shared on one side of both base plates. A rotating rod is fixedly attached to one end of the crank pin. This utility model, through the assembly mechanism, provides stable structural support and precise rotational connection for the crankshaft connecting rod assembly. It also helps balance the inertial force during engine operation, reducing vibration. Furthermore, the meshing mechanism enables reliable connection and flexible disassembly, further enhancing the tightness and stability of the meshing, ensuring smooth and efficient power transmission.

Description

Technical Field

[0001] This utility model belongs to the field of crankshaft connecting rod technology, specifically a crankshaft connecting rod assembly for a motorcycle engine. Background Technology

[0002] As a core component of the engine, the crankshaft connecting rod assembly is widely used in various types of motorcycles. Whether it is a scooter for daily urban commuting or a motorcycle with frequent stops and starts in traffic conditions, this assembly can operate stably, ensuring smooth driving and flexible handling, allowing riders to complete long-distance journeys comfortably and with peace of mind.

[0003] However, the following problems were found in the implementation of the relevant technologies:

[0004] In existing motorcycle engine crankshaft connecting rod assembly technology, there is often a problem of insufficient structural stability. Due to the lack of effective structural support and precise rotational connection design, the crankshaft connecting rod assembly is prone to shaking and displacement when the engine is running at high speed, which leads to increased wear between components and shortens the service life of the assembly. At the same time, the inertial force generated by the engine operation is difficult to balance, causing strong vibrations, which not only affect the driving comfort, but may also damage other precision components of the engine. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a crankshaft connecting rod assembly for a motorcycle engine, which offers advantages such as structural stability and reliable connection. Through its assembly mechanism, this invention provides stable structural support and precise rotational connection for the crankshaft connecting rod assembly. It also helps balance the inertial forces during engine operation, reducing vibration. Furthermore, the engagement mechanism enables reliable connection and flexible disassembly, further enhancing the tightness and stability of the engagement, ensuring smooth and efficient power transmission.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a crankshaft connecting rod assembly for a motorcycle engine, comprising two base plates, an assembly mechanism shared on the inner sides of the two base plates, a meshing mechanism on one side of one base plate, the assembly mechanism comprising a long half-shaft and a short half-shaft, one end of the long half-shaft and the short half-shaft being fixedly connected to one side of the two base plates respectively, a counterweight being provided on one side of the base plates, a crank pin being shared on one side of the two base plates, a rotating rod being fixedly provided at one end of the crank pin, the two ends of the rotating rod being rotatably connected to one side of the two base plates respectively, and a fixed shaft being shared on one side of the two base plates.

[0007] Preferably, the biting mechanism includes a connecting shaft, one end of which is fixedly connected to one end of a short half-shaft. Two biting shafts are provided on the outer side of the connecting shaft. One end of the opposite face of the two biting shafts is provided with biting teeth. One end of the opposite face of the two biting shafts is provided with a biting groove for cooperating with the biting teeth. Two fastening bolts are threaded into the outer side of the biting shaft.

[0008] Preferably, a fixing groove is provided on one side of the base plate, and the fixing groove is fixedly engaged with the fixing shaft.

[0009] Preferably, a rotating groove is provided on one side of the base plate, and the rotating groove is rotatably connected to one end of the rotating rod.

[0010] Preferably, a plurality of engaging rods are fixedly provided on one side of the base plate, and a plurality of engaging grooves are provided on one side of the counterweight, the engaging grooves engaging with the engaging rods.

[0011] Preferably, one end of the engagement shaft is provided with a connecting groove, and the inner surface of the connecting groove slides and fits against the outer surface of the connecting shaft.

[0012] Preferably, a fastening groove is provided at one end of the engagement shaft.

[0013] Preferably, the engagement shaft is a malleable shaft.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model provides stable structural support and precise rotational connection for the crankshaft connecting rod assembly through the assembly mechanism, and also helps to balance the inertial force during engine operation and reduce vibration.

[0016] 2. This utility model achieves reliable connection and flexible disassembly through the interlocking mechanism, and further enhances the tightness and stability of the interlocking, ensuring smooth and efficient power transmission. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the two mechanisms of this utility model;

[0019] Figure 3 This is a schematic diagram of the assembly mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the interlocking mechanism of this utility model.

[0021] In the diagram: 1. Base plate; 2. Assembly mechanism; 3. Engaging mechanism; 20. Long half-shaft; 21. Fixing groove; 22. Fixing shaft; 23. Rotating rod; 24. Short half-shaft; 25. Engaging groove; 26. Counterweight; 27. Crank pin; 28. Engaging rod; 29. ​​Rotating groove; 30. Engaging shaft; 31. Engaging groove; 32. Engaging teeth; 33. Connecting groove; 34. Fastening groove; 35. Connecting shaft; 36. Fastening bolt. 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] like Figures 1 to 4 As shown, this utility model provides a crankshaft connecting rod assembly for a motorcycle engine, including two base plates 1. An assembly mechanism 2 is provided on the inner side of both base plates 1. One side of one base plate 1 has a meshing mechanism 3. The assembly mechanism 2 includes a long half-shaft 20 and a short half-shaft 24. One end of the long half-shaft 20 and the short half-shaft 24 are respectively fixedly connected to one side of the two base plates 1. A counterweight 26 is provided on one side of each base plate 1. A crank pin 27 is provided on one side of each base plate 1. A rotating rod 23 is fixedly attached to one end of the crank pin 27. Both ends of the rotating rod 23 are rotatably connected to one side of each base plate 1. A fixed shaft 22 is provided on one side of each base plate 1. Through the assembly mechanism 2, when assembling the motorcycle engine crankshaft connecting rod assembly, one end of the long half-shaft 20 and the short half-shaft 24 are first fixedly connected to one side of each base plate 1, establishing a basic frame structure for the entire assembly. Then, the fixed shaft 22 is installed into a fixing groove 21 on the base plate 1 and fixed in place, thereby enhancing the stability of the structure. Subsequently, one end of the rotating rod 23 is inserted into the rotating groove 29 of the base plate 1, allowing it to rotate freely. Then, the crank pin 27 is fixed to one end of the rotating rod 23, and the two base plates 1 are rotatably connected through these components. Finally, the counterweight 26 is precisely installed in the designated position on the base plate 1 by engaging the locking rod 28 with the locking groove 25 to balance the inertial force generated during engine operation. At this point, the assembly mechanism 2 is complete.

[0024] Specifically, the engagement mechanism 3 includes a connecting shaft 35, one end of which is fixedly connected to one end of the short half-shaft 24. Two engagement shafts 30 are provided on the outer side of the connecting shaft 35. The opposite ends of the two engagement shafts 30 share engagement teeth 32. Each of the opposite ends of the two engagement shafts 30 has an engagement groove 31 that engages with the engagement teeth 32. Two fastening bolts 36 are threaded into the outer side of the engagement shafts 30. When the engagement mechanism 3 is needed, one end of the connecting shaft 35 is first fixedly connected to one end of the short half-shaft 24, providing a foundation for the subsequent installation of components. Then, the two engagement shafts 30 are slidably fitted onto the outer side of the connecting shaft 35 through the connecting grooves 33 at one end, so that the two engagement shafts 30 face each other, allowing the engagement teeth 32 at one end to engage with the engagement grooves 31. At this point, a tool can be used through the fastening groove 34 at one end of the engagement shaft 30 to tighten the fastening bolt 36 threaded on the outer side of the engagement shaft 30, further strengthening the connection between the two engagement shafts 30, ensuring the tightness and stability of the engagement, and completing the assembly and connection of the engagement mechanism 3.

[0025] Furthermore, the fixing groove 21 opened on one side of the base plate 1 is fixedly engaged with the fixing shaft 22. This design can provide a precise installation position for the fixing shaft 22, making the connection between the fixing shaft 22 and the base plate 1 more firm and stable. This effectively enhances the structural strength of the entire crankshaft connecting rod assembly, prevents the fixing shaft 22 from loosening or shifting due to vibration or other reasons during engine operation, and ensures the normal operation of the assembly.

[0026] Furthermore, the rotating groove 29 on one side of the base plate 1 is rotatably connected to one end of the rotating rod 23. The rotating groove 29 provides precise rotation space and support for the rotating rod 23, enabling the rotating rod 23 to rotate smoothly and steadily within it, reducing friction and wear during rotation, improving the efficiency of power transmission, and also ensuring the coordination and accuracy of the movement between the various components of the crankshaft connecting rod assembly.

[0027] It is worth noting that the multiple locking rods 28 fixed on one side of the base plate 1 engage with the multiple locking slots 25 on one side of the counterweight 26. This locking connection method is not only convenient for installation and disassembly, enabling quick and accurate positioning of the counterweight 26, but also ensures a firm and reliable connection that is not easily loosened. When the engine is running, the counterweight 26 can effectively balance the inertial force generated by the crankshaft connecting rod assembly, reduce vibration, and improve the smoothness and comfort of engine operation.

[0028] It is worth noting that the connecting groove 33 at one end of the engagement shaft 30 slides and fits against the outer surface of the connecting shaft 35. The design of the connecting groove 33 allows the engagement shaft 30 to be accurately fitted onto the connecting shaft 35, and the sliding fit ensures a tight and flexible connection between the two. This not only enables stable power transmission but also facilitates disassembly and installation when needed, improving the maintainability and operability of the component.

[0029] It is worth mentioning that the fastening groove 34 opened at one end of the engagement shaft 30 provides operating space for tools when tightening the fastening bolt 36, making it convenient to use tools to tighten or loosen the fastening bolt 36. This makes the connection between the two engagement shafts 30 more secure and reliable, further enhancing the stability and reliability of the engagement mechanism 3, and ensuring that there will be no loosening or separation during engine operation.

[0030] It is worth emphasizing that the engagement shaft 30 is made of a malleable shaft, which gives it a certain degree of flexibility and malleability. During engagement, it can better adapt to changes in the shape and size of the connecting shaft 35, fill any possible small gaps, thereby improving the tightness of the engagement, reducing power transmission losses and vibrations, and also absorbing and buffering the impact forces generated during engine operation to a certain extent, thus extending the service life of the components.

[0031] Working Principle: When assembling the motorcycle engine crankshaft connecting rod assembly, assembly mechanism 2 first fixes one end of the long half-shaft 20 and the short half-shaft 24 to one side of each of the two base plates 1, establishing a basic frame structure for the entire assembly. Next, the fixed shaft 22 is installed and secured in the fixed groove 21 on the base plate 1 to enhance structural stability. Then, one end of the rotating rod 23 is inserted into the rotating groove 29 on the base plate 1, allowing it to rotate freely. The crank pin 27 is then fixed to one end of the rotating rod 23, achieving a rotatable connection between the two base plates 1 through these components. Finally, the counterweight 26 is precisely installed in its designated position on the base plate 1 via the engaging rod 28 and engaging groove 25, balancing the inertial force generated during engine operation. Assembly mechanism 2 is now complete.

[0032] When the biting mechanism 3 is needed, first, one end of the connecting shaft 35 is fixedly connected to one end of the short half-shaft 24, providing a foundation for the installation of subsequent components. Then, the two biting shafts 30 are slidably fitted against the outside of the connecting shaft 35 through the connecting groove 33 at one end, so that the two biting shafts 30 are facing each other, and the biting teeth 32 at one end of them engage with the biting groove 31. At this time, the fastening bolts 36 threaded on the outside of the biting shaft 30 can be tightened through the fastening groove 34 at one end of the biting shaft 30 using a tool, further strengthening the connection between the two biting shafts 30, ensuring the tightness and stability of the engagement, and completing the assembly and connection of the biting mechanism 3.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Motorcycle engine crankshaft connecting rod assembly comprising two bottom plates (1), characterized in that: The inner sides of the two base plates (1) are provided with an assembly mechanism (2), and one side of one of the base plates (1) is provided with an engagement mechanism (3). The assembly mechanism (2) includes a long half-shaft (20) and a short half-shaft (24). One end of the long half-shaft (20) and the short half-shaft (24) are fixedly connected to one side of the two base plates (1). One side of the base plate (1) is provided with a counterweight (26). One side of the two base plates (1) is provided with a crank pin (27). One end of the crank pin (27) is fixedly provided with a rotating rod (23). The two ends of the rotating rod (23) are rotatably connected to one side of the two base plates (1). One side of the two base plates (1) is provided with a fixed shaft (22).

2. The motorcycle engine crankshaft connecting rod assembly of claim 1, wherein: The biting mechanism (3) includes a connecting shaft (35), one end of which is fixedly connected to one end of a short half shaft (24). Two biting shafts (30) are provided on the outer side of the connecting shaft (35). One end of the opposite face of the two biting shafts (30) is provided with biting teeth (32). One end of the opposite face of the two biting shafts (30) is provided with biting grooves (31) that cooperate with the biting teeth (32). Two fastening bolts (36) are threaded into the outer side of the biting shaft (30).

3. The motorcycle engine crankshaft connecting rod assembly of claim 1, wherein: A fixing groove (21) is provided on one side of the base plate (1), and the fixing groove (21) is fixedly engaged with the fixing shaft (22).

4. The motorcycle engine crankshaft connecting rod assembly of claim 1, wherein: A rotating groove (29) is provided on one side of the base plate (1), and the rotating groove (29) is rotatably connected to one end of the rotating rod (23).

5. The motorcycle engine crankshaft connecting rod assembly of claim 1 wherein: Multiple locking rods (28) are fixedly provided on one side of the base plate (1), and multiple locking grooves (25) are provided on one side of the counterweight block (26). The locking grooves (25) are engaged with the locking rods (28).

6. The motorcycle engine crankshaft connecting rod assembly of claim 2, wherein: One end of the engagement shaft (30) is provided with a connecting groove (33), and the inner surface of the connecting groove (33) slides and fits against the outer surface of the connecting shaft (35).

7. The motorcycle engine crankshaft connecting rod assembly of claim 2, wherein: A fastening groove (34) is provided at one end of the engagement shaft (30).

8. The motorcycle engine crankshaft connecting rod assembly of claim 2, wherein: The engagement shaft (30) is a malleable shaft.

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