Connecting rod structure and engine driving mechanism

Abstract

The utility model belongs to the field of engines, and particularly discloses a connecting rod structure and an engine driving mechanism, the connecting rod structure comprises a rod body, one end of the rod body is provided with a first connecting hole used for being connected with a crankshaft, and the other end of the rod body is provided with a second connecting hole used for being connected with a piston; weight reduction grooves are formed in the two sides of the rod body in the length direction of the rod body and extend to the second connecting hole, a flaring part is arranged on the side, facing the second connecting hole, of each weight reduction groove, a reinforcing block is arranged at the small-diameter end of each flaring part, and each reinforcing block comprises a main body part and a reinforcing part facing the second connecting hole. By adopting the scheme, the problem that the use reliability of the connecting rod is easily influenced by directly reducing the weight of the connecting rod can be solved.

Description

Technical Field

[0001] The utility model belongs to the field of engines, and particularly relates to a connecting rod structure and an engine driving mechanism. Background Art

[0002] The connecting rod is a crucial component in automotive engines, connecting the piston and crankshaft and converting the piston's reciprocating linear motion into the crankshaft's rotational motion for power output. With the increasing demand for lightweight engines, reducing the connecting rod's weight has become a trend in connecting rod design. However, the connecting rod plays a crucial role in mechanical transmission, and simply reducing its weight can easily compromise its reliability. This is especially true for the small end of the connecting rod, where grooving or drilling can significantly reduce its strength. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides a connecting rod structure and an engine drive mechanism to solve the problem that directly reducing the weight of the connecting rod easily affects its reliability.

[0004] According to the embodiment of the present invention, the present invention adopts the following technical solutions:

[0005] The connecting rod structure includes a rod body, a first connecting hole for connecting to the crankshaft is provided at one end of the rod body, and a second connecting hole for connecting to the piston is provided at the other end of the rod body; weight-reducing grooves are provided on both sides of the rod body along its length direction, the weight-reducing grooves extend to the second connecting hole, and a flared portion is provided on the side of the weight-reducing groove facing the second connecting hole, and a reinforcement block is provided at the small-diameter end of the flared portion, and the reinforcement block includes a main body and a reinforcement portion facing the second connecting hole.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] In this solution, a weight-reducing groove is provided on the rod body to reduce the weight of the rod body, thereby reducing the weight of the rod body. The weight-reducing groove extends to the second connecting hole, which further reduces the weight of the rod body. A flared portion is provided on the side of the weight-reducing groove facing the second connecting hole. The setting of the flared portion facilitates widening the weight-reducing groove at this location to design a second connecting hole of a suitable size. In order to avoid a reduction in strength after the flared portion is opened, the strength of the rod body at this location is improved by providing a reinforcement block. In particular, when the rod body is subjected to a load along the width direction of the rod body, the reinforcement block can effectively reduce the deformation of the rod body at this location.

[0008] Furthermore, a plurality of first reinforcing ribs are provided in the weight-reducing groove, and the plurality of first reinforcing ribs are distributed along the length direction of the weight-reducing groove.

[0009] Furthermore, the first reinforcing rib is arranged along the width direction of the weight-reducing groove and is inclined.

[0010] Furthermore, adjacent first reinforcing ribs are inclined in opposite directions.

[0011] Furthermore, second reinforcing ribs are provided on both sides of the weight-reducing groove on the rod body along the length direction thereof.

[0012] Furthermore, the rod body includes a rod-shaped portion and a cover portion that are detachably connected together. Grooves are provided at the end of the rod-shaped portion and the opposite side of the cover portion. The grooves on both sides are connected to form a first connecting hole.

[0013] Furthermore, the end surfaces of the rod-shaped portion and the cover body portion on one side opposite to each other are provided with a clamping portion for clamping each other.

[0014] Furthermore, an insertion rod is fixed to the end of the rod-shaped portion, a socket for inserting the insertion rod is provided on the cover body, and one end of the insertion rod extending out of the socket is threadedly connected with a nut.

[0015] Furthermore, a plurality of abutment rods are threadedly connected to the nut along its axial direction, and an abutment sheet is fixed to one end of the abutment rod facing the rod-shaped portion.

[0016] According to the embodiment of the present invention, the present invention also adopts the following technical solutions:

[0017] The engine drive mechanism includes a piston, a crankshaft and a connecting rod structure. The first connecting hole is sleeved on the outside of the crankshaft. The piston is provided with an assembly hole that matches the second connecting hole. It also includes a hinge shaft for inserting into the second connecting hole and the assembly hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the connecting rod structure of an embodiment of the present utility model.

[0019] Figure 2 for Figure 1 Enlarged view of part A.

[0020] Figure 3 This is a schematic diagram of the overall structure of the engine drive mechanism of an embodiment of the present utility model.

[0021] In the figure: 1. Second connecting hole; 2. Main body; 3. Reinforcement part; 4. Reinforcement block; 5. Expanding part; 6. Weight-reducing groove; 7. First connecting hole; 8. Clamping part; 9. Cover body; 10. Second reinforcing rib; 11. Insert rod; 12. Nut; 13. Abutment rod; 14. Abutment plate; 15. Piston; 16. Crankshaft; 17. First reinforcing rib; 18. Rod body. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings, and specific implementation methods will be given.

[0023] like Figure 1As shown, the connecting rod structure includes a rod body 18 , one end of the rod body 18 is provided with a first connecting hole 7 for connecting to the crankshaft 16 , and the other end of the rod body 18 is provided with a second connecting hole 1 for connecting to the piston 15 .

[0024] Weight-reducing grooves 6 are provided on both sides of the rod body 18 along its length. The depth of the weight-reducing grooves 6 does not exceed 1 / 3 of the thickness of the rod body 18 to avoid insufficient strength caused by the remaining thickness of the rod body 18 being too small after the weight-reducing grooves 6 are provided. The weight-reducing groove 6 extends to the second connecting hole 1, and a flared portion 5 is provided on the side of the weight-reducing groove 6 facing the second connecting hole 1. The setting of the flared portion 5 facilitates the widening of the weight-reducing groove 6 at this point to design a second connecting hole 1 of appropriate size, and further reduces the weight of the rod body 18. In order to avoid a reduction in strength after the flared portion 5 is opened, a reinforcing block 4 is provided at the small-diameter end of the flared portion 5. The reinforcing block 4 includes a main body 2 and a reinforcing portion 3 facing the second connecting hole 1. The strength of the rod body 18 at this point is improved by the setting of the reinforcing block 4. In the actual design process, the reinforcing portion 3 is a protrusion provided on the main body 2. Through the design of the main body 2, the deformation resistance of the weight-reducing groove 6 at the small-diameter end of the flared portion 5 is improved. In particular, when the rod body 18 is subjected to a load along its width direction, the small-diameter end of the flared portion 5 is prone to deformation. The design of the reinforcing block 4 reduces deformation, and the design of the reinforcing portion 3 improves the bearing capacity of the rod body 18 along its length direction.

[0025] In order to improve the strength of the rod body 18, a plurality of first reinforcing ribs 17 are provided in the weight-reducing groove 6. The plurality of first reinforcing ribs 17 are distributed along the length direction of the weight-reducing groove 6. The first reinforcing ribs 17 are arranged along the width direction of the weight-reducing groove 6 and are inclined. Adjacent first reinforcing ribs 17 are inclined in opposite directions. By inclinedly arranging the first reinforcing ribs 17, the first reinforcing ribs 17 can withstand loads along the length and width directions of the rod body 18, thereby improving the strength of the rod body 18.

[0026] The rod body 18 is provided with second reinforcing ribs 10 along its length direction on both sides of the weight-reducing groove 6. The setting of the second reinforcing ribs 10 improves the strength of the rod body 18 in its length direction, and the second reinforcing ribs 10 are set on both sides of the weight-reducing groove 6 to reduce the impact caused by the opening of the weight-reducing groove 6.

[0027] In another embodiment of the present invention, the rod body 18 includes a rod-shaped portion and a cover portion 9 that are detachably connected together. The rod-shaped portion and the cover portion 9 are each provided with a groove on one side opposite to the other. The grooves on both sides are connected to form a first connecting hole 7. In order to facilitate the positioning of the rod-shaped portion and the cover portion 9, the cover portion 9 and the rod-shaped portion are provided with a clamping portion 8 for mutual clamping on the end surface on one side opposite to the other. Specifically, the clamping portion 8 is a plurality of protrusions provided on the rod-shaped portion or the cover portion 9. A clamping groove is formed between adjacent protrusions. The protrusions on the rod-shaped portion are inserted into the clamping grooves on the cover portion 9, and the protrusions on the cover portion 9 are inserted into the clamping grooves on the rod-shaped portion to form a clamping connection. In the actual design process, the cross-section of the protrusion is an isosceles triangle or an isosceles trapezoid, which is more convenient for clamping.

[0028] Combine Figure 2 The nut 12 is screwed onto the end face of the cover 9 so that the nut 12 can be screwed onto the end face of the cover 9.

[0029] In another embodiment of the present invention, Figure 3 As shown, an engine drive mechanism is also disclosed, including a piston 15, a crankshaft 16 and a connecting rod structure as described in the above embodiment, and the first connecting hole 7 is sleeved on the outside of the crankshaft 16. Specifically, the groove at the end of the rod-shaped portion is clamped on the outside of the crankshaft 16, and then the cover body 9 is assembled to the rod-shaped portion, so that the rod-shaped portion and the cover body 9 cooperate to achieve assembly with the crankshaft 16.

[0030] The piston 15 has an assembly hole that mates with the second connecting hole 1. After aligning the second connecting hole 1 with the assembly hole, a hinged shaft is inserted into the second connecting hole 1 and the assembly hole to connect the rod 18 to the piston 15. Once assembled, the rod 18 can rotate relative to the piston 15 or relative to the crankshaft 16, thereby converting the reciprocating linear motion of the piston 15 into rotation of the crankshaft 16.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. Connecting rod structure, characterized by: It includes a rod body, one end of the rod body is provided with a first connecting hole for connecting to the crankshaft, and the other end of the rod body is provided with a second connecting hole for connecting to the piston; weight-reducing grooves are provided on both sides of the rod body along its length direction, the weight-reducing grooves extend to the second connecting hole, and a flared portion is provided on the side of the weight-reducing groove facing the second connecting hole, and a reinforcement block is provided at the small-diameter end of the flared portion, and the reinforcement block includes a main body and a reinforcement portion facing the second connecting hole.

2. The connecting rod structure according to claim 1, characterized in that: A plurality of first reinforcing ribs are provided in the weight-reducing groove, and the plurality of first reinforcing ribs are distributed along the length direction of the weight-reducing groove.

3. The connecting rod structure according to claim 2, characterized in that: The first reinforcing ribs are arranged along the width direction of the weight-reducing groove and are inclined.

4. The connecting rod structure according to claim 3, characterized in that: Adjacent first reinforcing ribs are inclined in opposite directions.

5. The connecting rod structure according to claim 1, characterized in that: The rod body is provided with second reinforcing ribs along its length direction on both sides of the weight-reducing groove.

6. The connecting rod structure according to claim 1, characterized in that: The rod body comprises a rod-shaped portion and a cover portion which are detachably connected together. A groove is provided at the end of the rod-shaped portion and at one side opposite to the cover portion. The grooves on both sides are butted together to form a first connecting hole.

7. The connecting rod structure according to claim 6, characterized in that: The end surfaces of one side opposite to the rod-shaped portion and the cover body portion are provided with a clamping portion for clamping each other.

8. The connecting rod structure according to claim 6, characterized in that: An insert rod is fixed at the end of the rod-shaped portion, a socket for inserting the insert rod is provided on the cover body, and one end of the insert rod extending out of the socket is threadedly connected with a nut.

9. The connecting rod structure according to claim 8, characterized in that: A plurality of abutment rods are threadedly connected to the nut along its axial direction, and an abutment sheet is fixed to one end of the abutment rod facing the rod-shaped portion.

10. The engine drive mechanism is characterized by: It includes a piston, a crankshaft and a connecting rod structure as described in any one of claims 1 to 9, wherein the first connecting hole is sleeved on the outside of the crankshaft, the piston is provided with an assembly hole matching the second connecting hole, and also includes a hinge shaft for inserting into the second connecting hole and the assembly hole.

Images