Powder metallurgy connecting rod assembly of automobile engine

Abstract

The utility model discloses an automobile engine powder metallurgy connecting rod assembly which comprises a connecting rod body, a connecting rod cover is arranged at the top end of the connecting rod body, inserting holes are formed in the two sides of the connecting rod body and the two sides of a connecting rod, and fixing mechanisms are arranged in the inserting holes. The fixing mechanism comprises a fastening bolt, a limiting column, a fastening sleeve, connecting plates, a spiral groove, a spiral strip and a quick release mechanism, the quick release mechanism comprises multiple groups of screws, a screw sleeve, a gear, a limiting rod, a sliding sleeve and a rack, the multiple groups of screws are connected to the outer sides of the multiple groups of connecting plates respectively, the sliding sleeve is pushed to drive the rack to be meshed with the gear, and the gear rotates to drive the limiting rod to rotate; the limiting rod enables the threaded rod to slide along the threaded sleeve through cooperation of the threaded rod and the threaded sleeve, movement of the threaded rod pulls the connecting plate and the limiting sleeve to slide, after the connecting plate is separated from the fastening bolt, connection between the connecting plate and the spiral groove is removed, finally the fastening bolt and the limiting column can be easily pulled out, disassembly is completed, and the mechanism has the greatest advantage that the disassembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive engine technology, and more specifically, to an automotive engine powder metallurgy connecting rod assembly. Background Technology

[0002] In the maintenance of automobile engines, connecting rods are one of the key components, and their disassembly and replacement are unavoidable operations. However, existing connecting rod designs often use traditional fastening methods. When it is necessary to disassemble the connecting rod, the operation process is cumbersome and time-consuming. Traditional designs usually rely on fastening methods such as bolts and nuts. These fasteners usually need to be disassembled one by one with tools. The operation process is not only time-consuming, but also requires the disassembly personnel to have certain skills and experience. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the problems existing in the prior art, this utility model provides a powder metallurgy connecting rod assembly for an automotive engine, thereby solving the technical problem mentioned in the background art where the operation process is cumbersome and time-consuming when the connecting rod needs to be disassembled.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a powder metallurgy connecting rod assembly for an automotive engine, comprising a connecting rod body, a connecting rod cap at the top of the connecting rod body, and insertion holes on both sides of the connecting rod body and the connecting rod. A fixing mechanism is provided within each insertion hole. The fixing mechanism includes a fastening bolt, a limiting post, a fastening sleeve, a connecting plate, a spiral groove, a spiral strip, and a quick-release mechanism. The fastening bolt is inserted into the insertion hole, the limiting post is located at the top of the fastening bolt, the fastening sleeve is located at the top of the insertion hole, and the connecting plate has multiple sets distributed within the fastening sleeve. The spiral groove... The quick-release mechanism includes a screw, a screw sleeve, a gear, a limit rod, a sliding sleeve, and a rack. Multiple sets of screws are connected to the outer sides of the multiple sets of connecting plates. Multiple sets of screw sleeves are installed inside the fastening sleeve and threadedly connected to the multiple sets of screws. Gears are rotatably mounted on the tops of the multiple sets of screw sleeves. Limit rods slide on multiple sets of gears and are connected to the tops of the multiple sets of screws. Sliding sleeves slide on the outer side of the fastening sleeve. Multiple sets of racks are installed on the outer side of the sliding sleeves and mesh with the multiple sets of gears.

[0007] The present invention is further configured such that a bushing is provided at the bottom end of the connecting rod body, an upper connecting rod bearing is provided at the top end of the connecting rod body, and a lower connecting rod bearing is provided inside the connecting rod cover. The bushing and the upper and lower connecting rod bearings enhance the friction reduction and support effect between the connecting rod body and the connecting rod cover, helping to improve the wear resistance of the component, reduce wear during operation, and extend its service life.

[0008] The present invention is further configured such that a limiting sleeve is provided inside the fastening sleeve, and two sets of the limiting sleeve are provided, each slidably connected to both ends of multiple sets of connecting plates. The slidable connection between the limiting sleeve and the connecting plate ensures the stability of the fastening sleeve and restricts the relative movement of the connecting plates, thereby making the connection between the connecting rod body and the connecting rod cover more secure and preventing unnecessary displacement or loosening.

[0009] The present invention is further configured such that each of the multiple sets of limiting rods is polygonal and is slidably connected to multiple sets of gears. The polygonal design of the limiting rods and their slidable connection with the gears enhances the stability and durability of the meshing, effectively prevents slippage between the gears and the limiting rods, and improves the firmness and reliability of the connection.

[0010] This invention is further configured such that multiple sets of screws are rotatably connected to multiple sets of connecting plates. The rotatable connection between the screws and the connecting plates allows the system to be flexibly adjusted under stress, enhancing the operability and ease of disassembly of the components, and improving maintenance and repair efficiency.

[0011] This invention is further configured such that a locking mechanism is provided on the outer side of the fastening sleeve. The locking mechanism includes a limiting sleeve, a limiting plate, a rotating sleeve, and a push rod. The limiting sleeve is slidably installed on the outer side of the fastening sleeve. Multiple sets of limiting plates are installed on the top surface of the limiting sleeve. The rotating sleeve is rotatably installed on the outer wall of the fastening sleeve. Multiple sets of push rods are installed on the inner side of the rotating sleeve and abut against the bottom surface of the limiting sleeve. Through the cooperation of components such as the limiting sleeve, the limiting plate, and the push rod, the locking mechanism effectively avoids improper locking or loosening, ensuring the stability and safety of the structure and making the entire system more reliable during use.

[0012] The present invention is further configured such that the outer wall of the limiting sleeve is provided with a clearance groove, and the clearance groove is provided in multiple sets, each with a diameter larger than that of the multiple sets of push rods. The design of the clearance groove allows the push rod to slide in smoothly during operation, avoiding interference or jamming, improving the smoothness and efficiency of the locking mechanism, and ensuring a stable locking effect.

[0013] This invention is further configured such that a tension spring is provided between the bottom surface of the limiting sleeve and the fastening sleeve, and multiple sets of tension springs are provided. The tension springs enhance the self-recovery capability of the locking mechanism, allowing the limiting sleeve to quickly return to its original position after being released, maintaining the stability of the lock, and helping to improve the safety and ease of operation of the system.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a powder metallurgy connecting rod assembly for an automotive engine, which has the following advantages.

[0016] 1. The fixing mechanism, through the cooperation of components such as fastening bolts, limiting posts, fastening sleeves, connecting plates, spiral grooves, and spiral strips, achieves a stable connection between the connecting rod body and the connecting rod cap. The fastening bolt is inserted into the insertion hole, the limiting post engages with the top of the fastening bolt, and the fastening sleeve ensures the stability of the connection. The spiral groove in the connecting plate engages with the spiral strip on the outside of the fastening bolt. After tightening, the bottom surface of the fastening bolt tightly abuts against the top surface of the connecting rod cap, firmly connecting the connecting rod body and the connecting rod cap. This design effectively improves the reliability of the connection and can withstand the high load and vibration during engine operation, ensuring the reliable operation of the connecting rod assembly. The combined action of all components allows for a smooth disassembly process.

[0017] 2. The quick-release mechanism simplifies the disassembly process of the connecting rod body and connecting rod cover through the cooperation of components such as screw, threaded sleeve, gear, limit rod, sliding sleeve, and rack. After the locking mechanism is released, the sliding sleeve is pushed to drive the rack to mesh with the gear. The rotation of the gear drives the limit rod to rotate. The limit rod, through the cooperation of the screw and threaded sleeve, causes the screw to slide along the threaded sleeve. The movement of the screw pulls the connecting plate and the limiting sleeve to slide. After the connecting plate is disengaged from the fastening bolt, it is disconnected from the spiral groove. Finally, the fastening bolt and the limit post can be easily pulled out to complete the disassembly. The biggest advantage of this mechanism is that it improves disassembly efficiency and reduces the time and complexity of disassembly. Especially in environments that require frequent disassembly and maintenance, it can significantly improve work efficiency.

[0018] 3. The locking mechanism, through the coordinated operation of components such as the limiting sleeve, limiting plate, rotating sleeve, and push rod, effectively prevents accidental loosening of the quick-release mechanism during operation. The limiting sleeve, in cooperation with the fastening sleeve, ensures the stability of the locking components. When the rotating sleeve rotates, the push rod cooperates with the limiting sleeve, causing the push rod to disengage from the limiting sleeve and release the gear lock. Subsequently, the tension spring pushes the limiting sleeve back and locks the gear, ensuring that the quick-release mechanism is in a safe and fixed state. This design enhances the safety of the entire system during use, avoids disassembly failure or operational risks caused by improper locking, and ensures a combination of high efficiency and safety. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a powder metallurgy connecting rod assembly for an automobile engine according to the present invention.

[0020] Figure 2 This is a schematic diagram of the disassembled structure of the connecting rod cover in this utility model;

[0021] Figure 3 This is a cross-sectional view of the insertion hole in this utility model;

[0022] Figure 4 This is a schematic diagram of the fastening bolt and connecting plate in this utility model;

[0023] Figure 5 This is a cross-sectional view of the fastening sleeve in this utility model.

[0024] In the diagram: 1. Connecting rod body; 2. Connecting rod cap; 3. Insertion hole; 4. Fastening bolt; 5. Limiting post; 6. Fastening sleeve; 7. Connecting plate; 8. Spiral groove; 9. Spiral strip; 10. Screw; 11. Screw sleeve; 12. Gear; 13. Limiting rod; 14. Sliding sleeve; 15. Rack; 16. Bushing body; 17. Upper connecting rod bearing; 18. Lower connecting rod bearing; 19. Limiting sleeve; 20. Limiting sleeve; 21. Limiting plate; 22. Rotating sleeve; 23. Push rod; 24. Relief groove; 25. Tension spring. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0027] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0028] Please see Figures 1-5A powder metallurgical connecting rod assembly for an automotive engine includes a connecting rod body 1, a connecting rod cap 2 at the top of the connecting rod body 1, and insertion holes 3 on both sides of the connecting rod body 1 and the connecting rod. A fixing mechanism is installed within each insertion hole 3. The fixing mechanism includes a fastening bolt 4, a limiting post 5, a fastening sleeve 6, a connecting plate 7, a spiral groove 8, a spiral strip 9, and a quick-release mechanism. The fastening bolt 4 is inserted into the insertion hole 3. The limiting post 5 is located at the top of the fastening bolt 4. The fastening sleeve 6 is located at the top of the insertion hole 3. Multiple sets of connecting plates 7 are distributed within the fastening sleeve 6. The spiral groove 8 is located inside the multiple sets of connecting plates 7. The spiral strip 9 is located outside the fastening bolt 4. The quick-release mechanism, which slides within the spiral groove 8, includes a screw 10, a screw sleeve 11, a gear 12, a limiting rod 13, a sliding sleeve 14, and a rack 15. The screw 10 is provided with multiple sets that are respectively connected to the outside of multiple sets of connecting plates 7. The screw sleeve 11 is provided with multiple sets that are installed in the fastening sleeve 6 and are respectively threadedly connected to multiple sets of screws 10. The gear 12 is rotatably installed on the top of multiple sets of screw sleeves 11. The limiting rod 13 slides on multiple sets of gears 12 and is respectively connected to the top of multiple sets of screws 10. The sliding sleeve 14 slides on the outside of the fastening sleeve 6. The rack 15 is provided with multiple sets that are installed on the outside of the sliding sleeve 14 and are respectively meshed with multiple sets of gears 12.

[0029] The bottom end of the connecting rod body 1 is provided with a bushing body 16, the top end of the connecting rod body 1 is provided with an upper connecting rod cover 17, and the inner side of the connecting rod cover 2 is provided with a lower connecting rod cover 18. The bushing body 16 works in conjunction with the upper connecting rod cover 17 and the lower connecting rod cover 18 to form a buffer and support function, reducing friction and wear between the connecting rod body 1 and other parts, and ensuring the stability and durability of the connecting rod assembly.

[0030] The inner side of the fastening sleeve 6 is provided with a limiting sleeve 19. There are two sets of limiting sleeves 19, which are slidably connected to both ends of multiple sets of connecting plates 7. The limiting sleeves 19 are used in conjunction with both ends of the connecting plates 7 through sliding connection. The function of the limiting sleeves 19 is to prevent the connecting plates 7 from excessive displacement or deformation, thereby ensuring the precise positioning and stable connection between the fastening sleeve 6 and other components.

[0031] Multiple sets of limiting rods 13 are all polygonal and are slidably connected to multiple sets of gears 12. The polygonal design of the limiting rods 13 and the sliding connection with the gears 12 enhance the stability of meshing, avoid offset or jamming during sliding, and improve the reliability and durability of the entire transmission system.

[0032] Multiple sets of screws 10 are rotatably connected to multiple sets of connecting plates 7. The rotatable connection between the screws 10 and the connecting plates 7 allows the system to be finely adjusted under stress, improving the flexibility and adaptability of the transmission system and facilitating adjustment and maintenance.

[0033] In this embodiment, when it is necessary to install the connecting rod body 1 and the connecting rod cover 2, the limiting post 5 and the fastening bolt 4 are inserted into the insertion hole 3. Then, the spiral groove 8 on the inner side of the multiple sets of connecting plates 7 and the spiral strip 9 on the outer side of the fastening bolt 4 are threaded together and tightened so that the bottom surface of the fastening bolt 4 abuts against the top surface of the connecting rod cover 2, thus completing the connection between the connecting rod body 1 and the connecting rod cover 2. When it is necessary to disassemble, the locking mechanism is released from the gear 12, and the sliding sleeve 14 is pushed to drive the multiple sets of racks 15 to slide and mesh with the multiple sets of gears 12 for transmission. While rotating, the limiting rod 13 rotates. Multiple sets of limiting rods 13 drive multiple sets of screws 10 to engage with the screw sleeves 11, causing the screws 10 to move along the screw sleeves 11 and slide along the gear 12 via the limiting rods 13. Multiple sets of screws 10 pull multiple sets of connecting plates 7 to slide along the two sets of limiting sleeves 19. Multiple sets of connecting plates 7 move outward at the same time to disengage from the fastening bolts 4, causing the spiral strip 9 to be released from the threaded connection with the multiple sets of spiral grooves 8. Then, the plug and the limiting post 5 can be pulled out of the insertion hole 3, completing the disassembly of the connecting rod body 1 and the connecting rod cover 2.

[0034] Please see Figure 5 As one embodiment of the locking mechanism: a locking mechanism is provided on the outside of the fastening sleeve 6. The locking mechanism includes a limiting sleeve 20, a limiting plate 21, a rotating sleeve 22 and a push rod 23. The limiting sleeve 20 is slidably installed on the outside of the fastening sleeve 6. The limiting plate 21 is provided with multiple sets installed on the top surface of the limiting sleeve 20. The rotating sleeve 22 is rotatably installed on the outer wall of the fastening sleeve 6. The push rod 23 is provided with multiple sets installed on the inner side of the rotating sleeve 22 and abuts against the bottom surface of the limiting sleeve 20.

[0035] The outer wall of the limiting sleeve 20 is provided with a clearance groove 24, and there are multiple clearance grooves 24, each with a diameter larger than that of multiple sets of push rods 23. By setting a larger diameter groove, the clearance groove 24 ensures that the push rod 23 can pass smoothly, avoids frictional interference between the push rod 23 and the outer wall of the limiting sleeve 20, and improves the smoothness and stability of the locking device.

[0036] A tension spring 25 is provided between the bottom surface of the limiting sleeve 20 and the fastening sleeve 6, and multiple sets of tension springs 25 are provided. The tension spring 25 provides a restoring force, so that the limiting sleeve 20 can automatically return to its original position after operation, ensuring a tight fit between the fastening sleeve 6 and the limiting sleeve 20, and enhancing the stability and reliability of the locking mechanism.

[0037] More specifically, rotating the rotating sleeve 22 drives multiple sets of push rods 23 to rotate, causing the multiple sets of push rods 23 to move to the positions of multiple sets of relief grooves 24. At this time, the multiple sets of push rods 23 disengage from the bottom surface of the limiting sleeve 20. Then, the multiple sets of tension springs 25 pull the limiting sleeve 20, causing the multiple sets of limiting plates 21 to disengage from the teeth on the outside of the multiple sets of gears 12. At this time, the locking of the multiple sets of gears 12 is released. Then, the limiting sleeve 20 is pushed to stretch the multiple sets of tension springs 25. The limiting sleeve 20 pushes the multiple sets of limiting plates 21 to engage with the teeth on the outside of the multiple sets of gears 12. Rotating the rotating sleeve 22 drives the multiple sets of push rods 23 to disengage from the relief grooves 24 and abut against the bottom surface of the limiting sleeve 20, thus completing the locking of the multiple sets of gears 12.

[0038] In summary, during the use or operation of the overall equipment: when it is necessary to install the connecting rod body 1 and the connecting rod cover 2, insert the limiting post 5 and the fastening bolt 4 into the insertion hole 3, then thread the spiral groove 8 on the inner side of the multiple sets of connecting plates 7 and the spiral strip 9 on the outer side of the fastening bolt 4 and tighten them so that the bottom surface of the fastening bolt 4 abuts against the top surface of the connecting rod cover 2, thus completing the connection between the connecting rod body 1 and the connecting rod cover 2. When disassembly is required, release the locking mechanism from the gear 12, push the sliding sleeve 14 to drive the multiple sets of racks 15 to slide and mesh with the multiple sets of gears 12 for transmission. As gear 12 rotates, it drives limit rod 13 to rotate. Multiple sets of limit rods 13 drive multiple sets of screws 10 to engage with screw sleeves 11, causing screws 10 to move along screw sleeves 11 and slide along gear 12 via limit rods 13. Multiple sets of screws 10 pull multiple sets of connecting plates 7 to slide along two sets of limiting sleeves 19. Multiple sets of connecting plates 7 move outwards at the same time to disengage from fastening bolts 4, causing spiral strip 9 to disengage from the threaded connection with multiple sets of spiral grooves 8. Then, the plug and limit post 5 can be pulled out of the insertion hole 3, completing the disassembly of connecting rod body 1 and connecting rod cover 2.

[0039] Rotating the rotating sleeve 22 drives multiple sets of push rods 23 to rotate, causing the multiple sets of push rods 23 to move to the positions of multiple sets of relief grooves 24. At this time, the multiple sets of push rods 23 disengage from the bottom surface of the limiting sleeve 20. Then, the multiple sets of tension springs 25 pull the limiting sleeve 20, causing the multiple sets of limiting plates 21 to disengage from the teeth on the outside of the multiple sets of gears 12. At this time, the locking of the multiple sets of gears 12 is released. Then, the limiting sleeve 20 is pushed to stretch the multiple sets of tension springs 25. The limiting sleeve 20 pushes the multiple sets of limiting plates 21 to engage with the teeth on the outside of the multiple sets of gears 12. Rotating the rotating sleeve 22 drives the multiple sets of push rods 23 to disengage from the relief grooves 24 and abut against the bottom surface of the limiting sleeve 20, thus completing the locking of the multiple sets of gears 12.

[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A powder metallurgy connecting rod assembly for an automobile engine, comprising a connecting rod body (1), characterized in that: The top of the connecting rod body (1) is provided with a connecting rod cap (2). Both sides of the connecting rod body (1) and the connecting rod are provided with insertion holes (3). A fixing mechanism is provided in the insertion hole (3). The fixing mechanism includes a fastening bolt (4), a limiting post (5), a fastening sleeve (6), a connecting plate (7), a spiral groove (8), a spiral strip (9), and a quick-release mechanism. The fastening bolt (4) is inserted into the insertion hole (3). The limiting post (5) is located at the top of the fastening bolt (4). The fastening sleeve (6) is located at the top of the insertion hole (3). Multiple sets of connecting plates (7) are provided and distributed in the fastening sleeve (6). The spiral groove (8) is located inside the multiple sets of connecting plates (7). The spiral strip (9) is located outside the fastening bolt (4) and slides in the spiral groove. (8) Inside, the quick-release mechanism includes a screw (10), a screw sleeve (11), a gear (12), a limit rod (13), a sliding sleeve (14), and a rack (15). The screw (10) is provided with multiple sets that are respectively connected to the outside of multiple sets of connecting plates (7). The screw sleeve (11) is provided with multiple sets that are installed in the fastening sleeve (6) and are respectively threaded to the multiple sets of screws (10). The gear (12) is rotatably installed on the top of the multiple sets of screw sleeves (11). The limit rod (13) slides on the multiple sets of gears (12) and is respectively connected to the top of the multiple sets of screws (10). The sliding sleeve (14) slides on the outside of the fastening sleeve (6). The rack (15) is provided with multiple sets that are installed on the outside of the sliding sleeve (14) and are respectively meshed with the multiple sets of gears (12).

2. The powder metallurgy connecting rod assembly for an automobile engine according to claim 1, characterized in that: The bottom end of the connecting rod body (1) is provided with a bushing body (16), the top end of the connecting rod body (1) is provided with a connecting rod upper cover (17), and the inner side of the connecting rod cover (2) is provided with a connecting rod lower cover (18).

3. The powder metallurgy connecting rod assembly for an automobile engine according to claim 2, characterized in that: The inner side of the fastening sleeve (6) is provided with a limiting sleeve (19), and the limiting sleeve (19) is provided in two sets and is slidably connected to both ends of the multiple sets of connecting plates (7).

4. The powder metallurgy connecting rod assembly for an automobile engine according to claim 3, characterized in that: multiple sets The limiting rods (13) are all polygonal and are slidably connected to multiple sets of gears (12).

5. The powder metallurgy connecting rod assembly for an automobile engine according to claim 4, characterized in that: The multiple sets of screws (10) are rotatably connected to the multiple sets of connecting plates (7).

6. The powder metallurgy connecting rod assembly for an automobile engine according to claim 5, characterized in that: A locking mechanism is provided on the outside of the fastening sleeve (6). The locking mechanism includes a limiting sleeve (20), a limiting plate (21), a rotating sleeve (22), and a top rod (23). The limiting sleeve (20) is slidably installed on the outside of the fastening sleeve (6). The limiting plate (21) is provided with multiple sets installed on the top surface of the limiting sleeve (20). The rotating sleeve (22) is rotatably installed on the outer wall of the fastening sleeve (6). The top rod (23) is provided with multiple sets installed on the inner side of the rotating sleeve (22) and abuts against the bottom surface of the limiting sleeve (20).

7. The powder metallurgy connecting rod assembly for an automobile engine according to claim 6, characterized in that: The outer wall of the limiting sleeve (20) is provided with a relief groove (24), and the relief groove (24) is provided in multiple sets with a diameter greater than that of multiple sets of top rods (23).

8. The powder metallurgy connecting rod assembly for an automobile engine according to claim 7, characterized in that: A tension spring (25) is provided between the bottom surface of the limiting sleeve (20) and the fastening sleeve (6), and multiple sets of tension springs (25) are provided.

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