Connecting rod mechanism of automobile engine

Abstract

The utility model provides an automobile engine connecting rod mechanism, which relates to the technical field of engine connecting rods and comprises a connecting rod, a piston is arranged at the top of the connecting rod, a piston pin is inserted into the inner side of the piston, two notches are symmetrically arranged on the outer wall of the piston, and a fixing frame is arranged at the bottom of the inner side of each notch. The clamping plate is arranged in the notch, a limiting slot can be formed, the movable rod is promoted to slide on the fixing frame by utilizing the elasticity of the first spring, so that the baffle is pushed to be inserted into the limiting slot, the piston pin is blocked and limited, the piston pin is prevented from loosening or falling off in the operation process, and meanwhile, the piston pin is prevented from being loosened or falling off by pulling the pull ring. The first spring can be contracted, then the baffle is pulled out of the limiting inserting groove, the connecting block rotates in the lug seat, the baffle can be driven to rotate and unfold, the piston pin can be conveniently disassembled and overhauled, and therefore the stability of the connecting rod mechanism during operation is improved, the service life of an engine is prolonged, and potential safety hazards are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of engine connecting rods, in particular to a connecting rod mechanism of an automobile engine. Background Art

[0002] The crankshaft-connecting rod mechanism is the main component of the engine for energy conversion and realization of the working cycle. After the engine crankshaft is rotated by external force, it drives the piston to move back and forth to inhale the combustible mixture, and causes the combustible mixture to burn and do work in the combustion chamber, thereby driving the piston to move and rotate the crankshaft, the engine runs automatically, and the working cycle runs automatically.

[0003] The existing engine connecting rod mechanism is mainly divided into two parts: a piston and a connecting rod. The piston and the connecting rod are usually connected by a piston pin. However, the existing connecting rod mechanism cannot limit the piston pin, resulting in the piston pin being easily loosened or falling off during the continuous operation of the connecting mechanism, thereby disconnecting the connecting rod from the piston, paralyzing the entire mechanism, affecting the service life of the engine, and posing a major safety hazard. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the piston pin cannot be limited, resulting in the piston pin being easily loosened or falling off during the continuous operation of the connecting mechanism, thereby disconnecting the connecting rod from the piston, paralyzing the entire mechanism, affecting the service life of the engine, and posing a greater safety hazard, and proposes a connecting rod mechanism for an automobile engine.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a connecting rod mechanism of an automobile engine, comprising a connecting rod, a piston is arranged on the top of the connecting rod, a piston pin is inserted on the inner side of the piston, two notches are symmetrically provided on the outer wall of the piston, a fixing frame is arranged on the inner bottom of the notch, a clamping plate is arranged on the inner top of the notch, a connecting frame is arranged on the bottom of the fixing frame, a pull ring is arranged on the bottom of the connecting frame, two movable rods are connected to the top of the connecting frame, one end of the movable rod movably passes through the fixing frame and is connected to an ear seat, a first spring is sleeved on the outer side of the movable rod, a connecting block is rotatably connected to the inner side of the ear seat, and a baffle is fixedly connected to the top of the connecting block.

[0006] Preferably, an upper connecting rod cover is provided at the bottom of the connecting rod, a lower connecting rod cover is provided at the bottom of the upper connecting rod cover, two groups of fixing blocks are symmetrically provided on the outer walls of the upper connecting rod cover and the lower connecting rod cover, a wedge-shaped groove is opened on one side of the fixing block, a clamping assembly is provided on one side of the fixing block, two wedge blocks are symmetrically provided on the inner side of the clamping assembly, and the wedge blocks are inserted into the inner side of the wedge-shaped groove.

[0007] Preferably, the clamping assembly comprises two clamping plates, and the ends of the two clamping plates close to each other are connected to a telescopic rod, and a second spring is sleeved on the outer side of the telescopic rod.

[0008] Preferably, connecting rod bearing shells are provided on the inner sides of the upper connecting rod cover and the lower connecting rod cover, and the connecting rod bearing shells are semicircular.

[0009] Preferably, a bolt is disposed on the top of a single clamping plate, and a nut is disposed on the bottom of another clamping plate.

[0010] Preferably, a connecting sleeve is provided on the top of the connecting rod, a bushing is provided on the inner side of the connecting sleeve, and the bushing is sleeved on the outer side of the piston pin.

[0011] Preferably, limiting ring sleeves are symmetrically arranged on both sides of the interior of the piston, and the limiting ring sleeves are sleeved on the outer side of the piston pin.

[0012] Preferably, one end of the clamping plate movably passes through the fixing block and the clamping plate and is connected to the nut.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, a limit slot can be formed by arranging the clamping plate in the notch, and the elasticity of the first spring is used to cause the movable rod to slide on the fixing frame, thereby pushing the baffle plate to be inserted into the limit slot, so as to block and limit the piston pin, and prevent the piston pin from loosening or falling off during operation. At the same time, by pulling the pull ring, the first spring can be contracted, and then the baffle plate can be pulled out of the limit slot, and the connecting block can rotate in the ear seat to drive the baffle plate to rotate and unfold, so as to facilitate the disassembly and maintenance of the piston pin, thereby improving the stability of the connecting rod mechanism during operation, extending the service life of the engine, and avoiding safety hazards.

[0015] 2. In the utility model, the upper connecting rod cover and the lower connecting rod cover can be limited by inserting the wedge block into the inner side of the wedge groove. At the same time, by utilizing the effect of the telescopic rod and the contraction force of the second spring, the upper connecting rod cover and the lower connecting rod cover can be completely clamped by two clamping plates, thereby achieving the tightness of the connection between the upper connecting rod cover and the lower connecting rod cover, and further improving the stability of the connecting rod mechanism during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a three-dimensional structural schematic diagram of a connecting rod mechanism of an automobile engine;

[0017] Figure 2 A partial structural sectional view of a connecting rod mechanism of an automobile engine is proposed for the utility model;

[0018] Figure 3A partial structural schematic diagram of a connecting rod mechanism of an automobile engine is proposed for the utility model;

[0019] Figure 4 The utility model provides a partial structural exploded diagram of a connecting rod mechanism of an automobile engine;

[0020] Figure 5 The utility model provides a schematic diagram of the structure of a movable rod of a connecting rod mechanism of an automobile engine;

[0021] Figure 6 The utility model provides a schematic diagram of the wedge block structure of a connecting rod mechanism of an automobile engine.

[0022] Legend: 1. Connecting rod; 2. Connecting sleeve; 3. Bushing; 4. Piston; 5. Piston pin; 6. Notch; 7. Fixing frame; 8. Clamping plate; 9. Connecting frame; 10. Pull ring; 11. Movable rod; 12. Ear seat; 13. First spring; 14. Connecting block; 15. Baffle; 16. Upper connecting rod cover; 17. Lower connecting rod cover; 18. Fixing block; 19. Wedge-shaped groove; 20. Clamp; 21. Wedge-shaped block; 22. Bolt; 23. Nut; 24. Connecting rod bearing; 25. Limiting ring sleeve; 26. Telescopic rod; 27. Second spring. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0025] Example 1

[0026] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a connecting rod mechanism of an automobile engine, comprising a connecting rod 1, a piston 4 is arranged on the top of the connecting rod 1, a piston pin 5 is inserted on the inner side of the piston 4, two notches 6 are symmetrically opened on the outer wall of the piston 4, a fixing frame 7 is arranged on the inner bottom of the notch 6, a clamping plate 8 is arranged on the inner top of the notch 6, a connecting frame 9 is arranged on the bottom of the fixing frame 7, a pull ring 10 is arranged on the bottom of the connecting frame 9, two movable rods 11 are connected to the top of the connecting frame 9, one end of the movable rod 11 movably passes through the fixing frame 7 and is connected to an ear seat 12, a first spring 13 is sleeved on the outer side of the movable rod 11, a connecting block 14 is rotatably connected to the inner side of the ear seat 12, and a baffle 15 is fixedly connected to the top of the connecting block 14.

[0027] In this embodiment, a limiting slot can be formed by arranging the clamping plate 8 in the notch 6. The elasticity of the first spring 13 is used to cause the movable rod 11 to slide on the fixing frame 7, thereby pushing the baffle 15 to be inserted into the limiting slot, so as to block and limit the piston pin 5 to prevent the piston pin 5 from loosening or falling off during operation. At the same time, by pulling the pull ring 10, the first spring 13 can be contracted, and then the baffle 15 can be pulled out of the limiting slot. The connecting block 14 rotates in the ear seat 12, which can drive the baffle 15 to rotate and unfold, making it convenient to disassemble and overhaul the piston pin 5, thereby improving the stability of the connecting rod mechanism during operation, extending the service life of the engine, and avoiding safety hazards.

[0028] Example 2

[0029] like Figure 1-Figure 6 As shown, an upper connecting rod cover 16 is provided at the bottom of the connecting rod 1, a lower connecting rod cover 17 is provided at the bottom of the upper connecting rod cover 16, two sets of fixing blocks 18 are symmetrically provided on the outer walls of the upper connecting rod cover 16 and the lower connecting rod cover 17, a wedge-shaped groove 19 is provided on one side of the fixing block 18, a clamping assembly is provided on one side of the fixing block 18, two wedge-shaped blocks 21 are symmetrically provided on the inner side of the clamping assembly, the wedge-shaped blocks 21 are inserted into the inner side of the wedge-shaped groove 19, the clamping assembly includes two clamping plates 20, a telescopic rod 26 is connected to the end close to the two clamping plates 20, and a second spring is sleeved on the outer side of the telescopic rod 26 27. Connecting rod bearings 24 are arranged on the inner sides of the upper connecting rod cover 16 and the lower connecting rod cover 17. The connecting rod bearings 24 are semicircular. A bolt 22 is arranged on the top of a single clamping plate 20, and a nut 23 is arranged on the bottom of another clamping plate 20. A connecting sleeve 2 is arranged on the top of the connecting rod 1, and a bushing 3 is arranged on the inner side of the connecting sleeve 2. The bushing 3 is sleeved on the outer side of the piston pin 5. Limiting rings 25 are symmetrically arranged on both sides of the interior of the piston 4. The limiting rings 25 are sleeved on the outer side of the piston pin 5. One end of the clamping plate 20 movably passes through the fixing block 18 and the clamping plate 20 and is connected to the nut 23.

[0030] In this embodiment, the upper connecting rod cover 16 and the lower connecting rod cover 17 can be limited by inserting the wedge block 21 into the inner side of the wedge groove 19. At the same time, by utilizing the contraction force of the telescopic rod 26 and the second spring 27, the upper connecting rod cover 16 and the lower connecting rod cover 17 can be completely clamped by the two clamping plates 20, so as to realize the tightness of the connection between the upper connecting rod cover 16 and the lower connecting rod cover 17, and further improve the stability of the connecting rod mechanism during operation. The upper connecting rod cover 16 and the lower connecting rod cover 17 can be fixedly connected by the bolts 22 and the nuts 23, so as to further improve the connection strength between the two. A good lubrication interface is formed between the connecting rod and the crankshaft by the connecting rod bearing 24, which effectively reduces the friction coefficient during relative motion between the two, reduces wear and energy loss, and a good lubrication interface can be formed between the connecting sleeve 2 and the piston pin 5 by the bushing 3, reduces the friction coefficient, thereby reducing wear, and the connecting sleeve 2 can be limited by the limiting ring sleeve 25 to prevent the position of the connecting rod mechanism from shifting during operation, thereby improving the stability of the mechanism during operation.

[0031] The working principle of this embodiment is as follows: when in use, first place the connecting sleeve 2 between the two limiting ring sleeves 25, then insert the piston pin 5 into the inner side of the bushing 3 from the notch 6, connect the connecting rod 1 with the piston 4, then pull the pull ring 10 to shrink the first spring 13, then move the baffle 15 to make the connecting block 14 rotate in the ear seat 12, drive the baffle 15 to fit the inner side of the notch 6, then release the pull ring 10, the first spring 13 rebounds, pushes the baffle 15 to insert into the limiting slot, blocks and limits the piston pin 5, then fits the upper connecting rod cover 16 and the lower connecting rod cover 17 together, pulls the two clamps 20 up and down, stretches the telescopic rod 26 and the second spring 27, then inserts the wedge block 21 into the inner side of the wedge groove 19, fixes the upper connecting rod cover 16 and the lower connecting rod cover 17 into shape, finally tightens the bolt 22, and completely fixes and connects the upper connecting rod cover 16 and the lower connecting rod cover 17, thereby completing the use of the automobile engine connecting rod mechanism.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A connecting rod mechanism for an automobile engine, comprising a connecting rod (1), characterized in that: A piston (4) is arranged at the top of the connecting rod (1), a piston pin (5) is inserted into the inner side of the piston (4), two notches (6) are symmetrically provided on the outer wall of the piston (4), a fixing frame (7) is arranged at the inner bottom of the notch (6), a clamping plate (8) is arranged at the inner top of the notch (6), a connecting frame (9) is arranged at the bottom of the fixing frame (7), a pull ring (10) is arranged at the bottom of the connecting frame (9), two movable rods (11) are connected to the top of the connecting frame (9), one end of the movable rod (11) is movably inserted through the fixing frame (7) and is connected to an ear seat (12), a first spring (13) is sleeved on the outer side of the movable rod (11), a connecting block (14) is rotatably connected to the inner side of the ear seat (12), and a baffle (15) is fixedly connected to the top of the connecting block (14).

2. The automobile engine connecting rod mechanism according to claim 1, characterized in that: An upper connecting rod cover (16) is arranged at the bottom of the connecting rod (1), and a lower connecting rod cover (17) is arranged at the bottom of the upper connecting rod cover (16). Two groups of fixing blocks (18) are symmetrically arranged on the outer walls of the upper connecting rod cover (16) and the lower connecting rod cover (17), and a wedge-shaped groove (19) is opened on one side of the fixing block (18). A clamping assembly is arranged on one side of the fixing block (18), and two wedge-shaped blocks (21) are symmetrically arranged on the inner side of the clamping assembly, and the wedge-shaped blocks (21) are inserted into the inner side of the wedge-shaped groove (19).

3. The automobile engine connecting rod mechanism according to claim 2, characterized in that: The clamping assembly comprises two clamping plates (20), the close ends of the two clamping plates (20) are connected to a telescopic rod (26), and the outer side of the telescopic rod (26) is sleeved with a second spring (27).

4. The automobile engine connecting rod mechanism according to claim 2, characterized in that: The inner sides of the upper connecting rod cover (16) and the lower connecting rod cover (17) are both provided with connecting rod bearing shells (24), and the connecting rod bearing shells (24) are semicircular.

5. The automobile engine connecting rod mechanism according to claim 3, characterized in that: A bolt (22) is arranged on the top of a single clamping plate (20), and a nut (23) is arranged on the bottom of another clamping plate (20).

6. The automobile engine connecting rod mechanism according to claim 1, characterized in that: A connecting sleeve (2) is arranged at the top of the connecting rod (1), a bushing (3) is arranged on the inner side of the connecting sleeve (2), and the bushing (3) is sleeved on the outer side of the piston pin (5).

7. The automobile engine connecting rod mechanism according to claim 1, characterized in that: Limiting ring sleeves (25) are symmetrically arranged on both sides of the interior of the piston (4), and the limiting ring sleeves (25) are sleeved on the outer side of the piston pin (5).

8. The automobile engine connecting rod mechanism according to claim 5, characterized in that: One end of the clamping plate (20) movably passes through the fixing block (18) and the clamping plate (20) and is connected to the nut (23).

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