A composite structure to enhance the strength of a connecting rod

Abstract

This utility model discloses a combined structure for improving the strength of a connecting rod, including a connecting rod body. The connecting rod body includes a shaft, a large end, a small end, and a connecting rod cap. The connecting rod cap is bolted to the large end of the connecting rod. The large end of the connecting rod includes a long arc arm and a short arc arm. The connecting rod cap is mounted opposite the long arc arm. The side of the long arc arm away from the connecting rod cap has a thickened structure. This utility model has the advantages of simple structure and reliable strength.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to a combined structure for improving the strength of connecting rods. Background Technology

[0002] The design of engine connecting rods is crucial. The car engine is one of the most important components, and the connecting rod is a key internal component, essential for power transmission. The impact force generated by fuel combustion is transmitted to the connecting rod via the piston. The connecting rod converts the piston's linear reciprocating motion into the crankshaft's rotational motion, which then outputs power outwards. Existing designs lack localized thickening structures or other deformation-resistant features at the big end of the connecting rod, or only provide localized reinforcement, resulting in uneven overall strength. For example, patent document CN219865864U discloses an engine connecting rod structure.

[0003] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0004] The main purpose of this utility model is to propose a combined structure that is compact, highly reliable, and has sufficient strength to enhance the strength of the lifting link.

[0005] Therefore, this utility model proposes a combined structure to enhance the strength of the connecting rod.

[0006] Preferably, the present invention may also have the following technical features:

[0007] A combined structure for improving the strength of a connecting rod includes a connecting rod body, the connecting rod body including a shaft, a large end, a small end, and a connecting rod cap, the connecting rod cap being bolted to the large end of the connecting rod, the large end of the connecting rod including a long arc arm and a short arc arm, the connecting rod cap being mounted opposite the long arc arm, and the side of the long arc arm away from the connecting rod cap having a thickened structure.

[0008] Furthermore, the thickened structure is a square rib.

[0009] Furthermore, the thickened structure is a semi-circular rib.

[0010] Furthermore, the thickened structure extends from the big end of the connecting rod to the shaft of the connecting rod.

[0011] Furthermore, the outer side of the connecting rod cover is provided with a reinforcing structure.

[0012] Furthermore, the reinforcing structure is a rib, with its two ends connected to the bolt holes of the connecting rod cap.

[0013] Furthermore, the reinforcing structure is a plate with bolt holes at both ends connected to the connecting rod cap.

[0014] Furthermore, a reinforcing structure is provided at the connection between the small end of the connecting rod and the rod body.

[0015] The beneficial effects of this utility model compared with the prior art include: A locally thickened structure is added to the connecting rod cap, extending all the way to the side of the connecting rod cap bolt, increasing resistance to deformation. A locally thickened structure is added at the transition point between the connecting rod big end and the rod body at the rounded corner, further increasing resistance to deformation. The connection points between the rod body and the connecting rod big and small ends are reinforced, as are the connecting rod big end and the connecting rod cap, achieving multi-faceted reinforcement of the connecting rod as a whole, resulting in a balanced improvement in the connecting rod's strength. Attached Figure Description

[0016] Figure 1 and Figure 2 These are perspective views of this utility model from different angles.

[0017] Figure 3 This is a partial schematic diagram of the present invention.

[0018] Figure 4 This is the third view of this utility model. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0020] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0021] like Figure 1-3 The diagram illustrates a combined structure for enhancing the strength of a connecting rod, comprising a connecting rod body 2, a large end 3, a small end 1, and a connecting rod cap 4. The connecting rod cap 4 is bolted to the large end 3. The large end 3 includes a long arc arm 36 and a short arc arm 35. The connecting rod cap 4 is mounted opposite the long arc arm 36. A thickening structure 31 is provided on the side of the long arc arm 36 away from the connecting rod cap 4. Preferably, the thickening structure 31 extends from the large end 3 to the connecting rod body 5, enhancing the connection strength between the large end 3 and the body 2 and increasing resistance to deformation. Preferably, the short end 35 of the large end 3 also has reinforcing ribs 34.

[0022] In a preferred embodiment, the thickening structure 31 is a convex rib structure, such as a square rib or a semi-circular rib, that can increase the strength of the connecting rod big end 3.

[0023] Preferably, the outer side of the connecting rod cover 4 is provided with a reinforcing structure 41, and both ends of the reinforcing structure 41 are connected to the bolt connection holes of the connecting rod cover 4. For example, the reinforcing structure 41 is a rib or a plate.

[0024] Preferably, a reinforcing structure 11 is provided at the connection between the small end 1 of the connecting rod and the rod body 2, thereby increasing the strength by increasing the thickness of the connection between the small end 1 of the connecting rod and the rod body 2.

[0025] In this way, the connection between the shaft 2 and the big end 3 and small end 1 of the connecting rod is strengthened, the big end 3 of the connecting rod is strengthened, and the connecting rod cap 4 is strengthened, thereby achieving multi-faceted strengthening of the connecting rod as a whole and improving the strength of the connecting rod in a balanced manner.

[0026] The connecting rod big end 3 is provided with an arc-shaped relief structure 33, and the periphery of the arc-shaped relief structure 33 is provided with a boss 32, which is arc-shaped. Preferably, there are two bosses 32, one on the periphery of the arc-shaped relief structure 33 and the other on the long arc arm 36. In this example, the strength of the arc-shaped relief structure 33 is compensated by the ear-shaped boss.

[0027] Reference Figure 4 Since the connecting rod big end 3 and the connecting rod cap 4 are connected by bolts, the connecting rod big end 3 is provided with bolt holes. These bolt holes extend from the end face of the connecting rod big end 3 towards the rod body 2 and approach the rod body 2. A bulge 38 is provided at the bottom of the bolt hole on the rod body 2 to improve the reliability of the connecting rod bolt bottom hole. Preferably, the bulge 38 is a cylindrical protrusion.

[0028] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0029] Although exemplary embodiments of the present invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. A combined structure for enhancing the strength of a connecting rod, comprising a connecting rod body, the connecting rod body including a shaft, a large end, a small end, and a connecting rod cap, the connecting rod cap being bolted to the large end of the connecting rod, the large end of the connecting rod including a long arc arm and a short arc arm, the connecting rod cap being mounted opposite the long arc arm, characterized in that: The long arc arm has a thickened structure on the side away from the connecting rod cover; a bulge is provided at the bottom of the rod body and the bolt hole.

2. The combined structure for enhancing the strength of the connecting rod as described in claim 1, characterized in that: The thickened structure is a square rib.

3. The combined structure for enhancing the strength of the connecting rod as described in claim 1, characterized in that: The thickened structure is a semi-circular rib.

4. The combined structure for enhancing the strength of the connecting rod as described in claim 2 or 3, characterized in that: The thickened structure extends from the big end of the connecting rod to the shaft of the connecting rod.

5. The combined structure for enhancing the strength of the connecting rod as described in claim 1, characterized in that: The outer side of the connecting rod cover is provided with a reinforcing structure.

6. The combined structure for enhancing the strength of the connecting rod as described in claim 5, characterized in that: The reinforcing structure is a rib, with bolt holes at both ends of the rib connected to the connecting rod cap.

7. The combined structure for enhancing the strength of the connecting rod as described in claim 5, characterized in that: The reinforcing structure is a plate with bolt holes at both ends connected to the connecting rod cap.

8. The combined structure for enhancing the strength of the connecting rod as described in claim 1, characterized in that: The connection between the small end of the connecting rod and the shaft is reinforced.

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