Automobile piston with stroke rod

Abstract

The utility model relates to the technical field of automobile pistons with stroke rods, and discloses an automobile piston with a stroke rod, which comprises a piston body and a bearing bush, the piston body is connected with a connecting rod through a connecting mechanism, a stroke adjusting mechanism is arranged, and a servo motor is matched with a synchronous belt to drive the stroke rod. The distance between the bearing bush and the connecting rod can be rapidly and accurately adjusted according to the working condition of an engine, the initial stroke position of the piston is accurately controlled, the compression ratio of an air cylinder is reasonably optimized, the engine can keep good performance under different working conditions, the synchronous rod ensures the stability of the relative position of the connecting rod and the bearing bush in the adjusting process, the running stability of the piston is enhanced, and the service life is prolonged. The scale strips on the synchronous rod facilitate observation of the adjusting amount by maintenance personnel, maintenance and troubleshooting are facilitated, the bottom of the bearing bush is connected with the clamping ring through the screw, the bearing bush is stabilized, normal operation of the stroke adjusting mechanism is guaranteed, the reliability of an engine is improved, and the service life of the engine is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of automotive piston technology with a stroke rod, and particularly to an automotive piston with a stroke rod. Background Technology

[0002] The piston is a key component in a car engine. It is usually made of high-strength aluminum alloy, which has good thermal conductivity and light weight. Its shape is similar to a short cylinder, with a concave or convex top to adapt to different engine combustion requirements. The piston side has piston ring grooves for installing piston rings to achieve sealing, oil control and heat conduction functions. The piston is connected to the small end of the connecting rod through the piston pin. When the engine is working, the piston moves up and down in the cylinder, enduring the forces of high temperature, high pressure and high speed, and transmits the pressure of combustion gas to the connecting rod, which in turn drives the crankshaft to rotate, ultimately realizing the engine's power output.

[0003] The applicant discovered through a search that a Chinese patent discloses "An Automobile Piston with a Stroke Rod," with publication (announcement) number "CN222162768U." This patent mainly uses a stroke rod, and by adjusting the position of the nut on the stroke rod, the distance between the bearing and the first connecting rod can be adjusted, thereby adjusting the initial position of the piston stroke and thus rationally distributing the cylinder compression ratio. However, the structure of this patent is relatively simple, relying on manual operation of the nut for adjustment, and mainly maintaining the relative position through the threaded engagement between the nut and the stroke rod, resulting in relatively weak stability. Therefore, we propose an automobile piston with a stroke rod. Utility Model Content

[0004] The purpose of this invention is to provide an automotive piston with a stroke rod to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automotive piston with a stroke rod, comprising a piston body and a bearing bush. The piston body is connected to a connecting rod via a connecting mechanism. A stroke adjustment mechanism is provided between the connecting rod and the bearing bush. The stroke adjustment mechanism includes a servo motor and a synchronizing rod. The servo motor is connected to a synchronizing belt via a rotating shaft. Fixing components are fixedly installed at both ends of the connecting rod and at the lower end of the bearing bush. A nut is fixedly installed at the upper end of the bearing bush. A stroke rod is internally threadedly connected to the nut and the fixing component at the upper end of the connecting rod. A lead screw is fixedly installed in the middle of the stroke rod. The left end of the synchronizing rod is fixedly installed in the fixing component at the lower end of the connecting rod, and the right end of the synchronizing rod is slidably connected in the fixing component at the lower end of the bearing bush.

[0006] As a preferred embodiment, the bottom of the bearing bush is connected to a retaining ring via a screw.

[0007] As a preferred embodiment, the servo motor is fixedly mounted on the upper end of the connecting rod, the rotating shaft is fixedly mounted on the output shaft of the servo motor, and the synchronous belt is connected to the travel rod and the rotating shaft for transmission.

[0008] As a preferred embodiment, the nut and the lead screw are threaded together, and a scale bar is provided on the outer wall of the synchronizing rod.

[0009] As a preferred embodiment, the connecting mechanism includes a connecting shaft and two sets of mounting blocks. The two sets of mounting blocks are respectively fixedly installed inside the piston body. Both ends of the connecting shaft are provided with slots. Limiting springs are fixedly installed inside the slots. Limiting rods are fixedly installed on the outer ends of the limiting springs. Limiting covers are fixedly installed on the outer ends of the limiting rods.

[0010] As a preferred embodiment, the limiting rod is slidably connected inside the mounting block.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. Through the set stroke adjustment mechanism, in which the servo motor and synchronous belt drive the stroke rod, the distance between the bearing and the connecting rod can be quickly and accurately adjusted according to the engine operating conditions. This precisely controls the initial position of the piston stroke, optimizes the cylinder compression ratio, and enables the engine to maintain good performance under different operating conditions. The synchronous rod ensures the stability of the relative position of the connecting rod and the bearing during the adjustment process, enhances the smoothness of piston operation, and reduces vibration and noise. The scale bar on the synchronous rod makes it easy for maintenance personnel to observe the adjustment amount, facilitating maintenance and troubleshooting. The bottom of the bearing is connected to the retaining ring by a screw, which stabilizes the bearing and ensures the normal operation of the stroke adjustment mechanism, thereby improving the reliability and service life of the engine.

[0013] 2. Through the designed connecting mechanism, the two ends of the connecting shaft cooperate with the mounting block through limit springs, limit rods, and limit covers, which can effectively buffer and dampen shocks, reduce the impact of piston movement impact and vibration on the connecting parts, and ensure smooth power transmission. At the same time, this structure makes assembly and disassembly more convenient, improves production and maintenance efficiency, and can adapt to the piston force changes under different engine operating conditions, evenly distribute stress, reduce wear and fatigue, extend the service life of related components, reduce the occurrence of failures, and enhance the overall performance and durability of the engine. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the stroke adjustment mechanism of this utility model;

[0016] Figure 3This is a partial structural schematic diagram of the stroke adjustment mechanism of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the connecting mechanism of this utility model;

[0018] Figure 5 This is an exploded view of part of the connecting mechanism of this utility model.

[0019] In the diagram: 1. Piston body; 2. Connecting rod; 3. Bearing shell; 4. Snap ring; 5. Stroke adjustment mechanism; 501. Servo motor; 502. Rotating shaft; 503. Synchronous belt; 504. Stroke rod; 505. Lead screw; 506. Fixing component; 507. Nut; 508. Synchronous rod; 509. Scale bar; 6. Connecting mechanism; 601. Mounting block; 602. Connecting shaft; 603. Slot; 604. Limit spring; 605. Limit rod; 606. Limit cover. Detailed Implementation

[0020] 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.

[0021] Example 1:

[0022] Please see the appendix Figure 1 - Appendix Figure 3 A type of automotive piston with a stroke rod includes a piston body 1 and a bearing 3. The piston body 1 is connected to a connecting rod 2 via a connecting mechanism 6. A stroke adjustment mechanism 5 is provided between the connecting rod 2 and the bearing 3. The stroke adjustment mechanism 5 includes a servo motor 501 and a synchronous rod 508. The servo motor 501 is connected to a synchronous belt 503 via a rotating shaft 502. Fixing members 506 are fixedly installed at both ends of the connecting rod 2 and the lower end of the bearing 3. A nut 507 is fixedly installed at the upper end of the bearing 3. A stroke rod 504 is internally threadedly connected between the nut 507 and the fixing member 506 at the upper end of the connecting rod 2. A lead screw 505 is fixedly installed in the middle of 504. The left end of the synchronizing rod 508 is fixedly installed in the fixing part 506 at the lower end of the connecting rod 2. The right end of the synchronizing rod 508 is slidably connected in the fixing part 506 at the lower end of the bearing bush 3. The bottom of the bearing bush 3 is connected to a retaining ring 4 by a screw. The servo motor 501 is fixedly installed on the upper end of the connecting rod 2. The rotating shaft 502 is fixedly installed on the output shaft of the servo motor 501. The synchronizing belt 503 is connected to the travel rod 504 and the rotating shaft 502. The nut 507 and the lead screw 505 are threadedly connected. A scale strip 509 is opened on the outer wall of the synchronizing rod 508.

[0023] The stroke rod 504 and the rotating shaft 502 rotate synchronously with the synchronous belt 503, so that the forward and reverse rotation of the servo motor 501 can drive the stroke rod 504 to rotate in both directions, thereby allowing the bearing 3 to move closer to or further away from the connecting rod 2. The scale bar 509 on the synchronous rod 508 makes it easy to check the adjustment amount during maintenance.

[0024] Specifically, the servo motor 501, in conjunction with the synchronous belt 503, drives the stroke rod 504, which can quickly and accurately adjust the distance between the bearing 3 and the connecting rod 2 according to the engine operating conditions, precisely control the initial position of the piston stroke, and reasonably optimize the cylinder compression ratio, so that the engine can maintain good performance under different operating conditions. The synchronous rod 508 ensures the stability of the relative position of the connecting rod 2 and the bearing 3 during the adjustment process, enhances the smoothness of piston operation, and reduces vibration and noise. The scale bar 509 on the synchronous rod 508 makes it convenient for maintenance personnel to observe the adjustment amount, which facilitates maintenance and troubleshooting. The bottom of the bearing 3 is connected to the retaining ring 4 by a screw, which stabilizes the bearing 3, ensures the normal operation of the stroke adjustment mechanism 5, and improves the reliability and service life of the engine.

[0025] Example 2:

[0026] Please see the appendix Figure 1 Appendix Figure 4 and attached Figure 5 Furthermore, based on Embodiment 1, the connecting mechanism 6 includes a connecting shaft 602 and two sets of mounting blocks 601. The two sets of mounting blocks 601 are respectively fixedly installed inside the piston body 1. Both ends of the connecting shaft 602 are provided with slots 603. Limiting springs 604 are fixedly installed inside the slots 603. Limiting rods 605 are fixedly installed on the outer ends of the limiting springs 604. Limiting covers 606 are fixedly installed on the outer ends of the limiting rods 605. The limiting rods 605 are slidably connected inside the mounting blocks 601.

[0027] After the limit spring 604 is compressed to its limit, the limit cover 606 is just detached from the mounting block 601, making it easy to remove the connecting rod 2 from the piston body 1 for maintenance.

[0028] Specifically, the two ends of the connecting shaft 602 cooperate with the mounting block 601 through the limiting spring 604, the limiting rod 605, and the limiting cover 606, which can effectively buffer and dampen shocks, reduce the impact of piston movement and vibration on the connection parts, and ensure smooth power transmission. At the same time, this structure makes assembly and disassembly more convenient, improves production and maintenance efficiency, and can adapt to the changes in piston force under different engine operating conditions, evenly distribute stress, reduce wear and fatigue, extend the service life of related components, reduce the occurrence of failures, and enhance the overall performance and durability of the engine.

[0029] Working principle of this utility model: This utility model is an automotive piston with a stroke rod. When the piston stroke needs to be adjusted, the servo motor 501 installed on the upper end of the connecting rod 2 is started. The output shaft of the servo motor 501 drives the rotating shaft 502 to rotate. The rotating shaft 502 drives the stroke rod 504 to rotate through the synchronous belt 503. When the stroke rod 504 rotates, it will move axially within the nut 507, thereby changing the distance between the connecting rod 2 and the bearing 3, realizing the adjustment of the piston stroke. During the stroke adjustment process, the left end of the synchronous rod 508 is fixed to the lower end of the connecting rod 2. The right end is slidably connected to the fixing part 506 at the lower end of the bearing 3, ensuring smooth and synchronous relative movement between the connecting rod 2 and the bearing 3. In addition, the scale bar 509 on the outer wall of the synchronizing rod 508 can intuitively display the adjustment amount, making it convenient for operators to observe and control the adjustment process and ensure the accuracy of the adjustment. When it is necessary to disassemble the piston body 1, press the limit cover 606 on both sides to compress the limit spring 604 to the limit, so that the limit cover 606 is separated from the mounting block 601, and the connecting shaft 602 and the connecting rod 2 can be removed from the piston body 1.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A piston for automobiles with a stroke rod, comprising a piston body (1) and a bearing (3), characterized in that: The piston body (1) is connected to a connecting rod (2) via a connecting mechanism (6). A stroke adjustment mechanism (5) is provided between the connecting rod (2) and the bearing (3). The stroke adjustment mechanism (5) includes a servo motor (501) and a synchronous rod (508). The servo motor (501) is connected to a synchronous belt (503) via a rotating shaft (502). Fixing members (506) are fixedly installed at both ends of the connecting rod (2) and at the lower end of the bearing (3). A nut (507) is fixedly installed on the upper end of the bearing (3). The nut (507) and the internal thread of the fixing part (506) at the upper end of the connecting rod (2) are connected to a stroke rod (504). A lead screw (505) is fixedly installed in the middle of the stroke rod (504). The left end of the synchronizing rod (508) is fixedly installed in the fixing part (506) at the lower end of the connecting rod (2). The right end of the synchronizing rod (508) is slidably connected in the fixing part (506) at the lower end of the bearing (3).

2. The automotive piston with a stroke rod according to claim 1, characterized in that: The bottom of the bearing bush (3) is connected to a retaining ring (4) by a screw.

3. A car piston with a stroke rod according to claim 2, characterized in that: The servo motor (501) is fixedly installed on the upper end of the connecting rod (2), the rotating shaft (502) is fixedly installed on the output shaft of the servo motor (501), and the synchronous belt (503) is connected to the travel rod (504) and the rotating shaft (502) for transmission.

4. A car piston with a stroke rod according to claim 3, characterized in that: The nut (507) and the lead screw (505) are threaded together, and a scale strip (509) is provided on the outer wall of the synchronizing rod (508).

5. A car piston with a stroke rod according to claim 1, characterized in that: The connecting mechanism (6) includes a connecting shaft (602) and two sets of mounting blocks (601). The two sets of mounting blocks (601) are respectively fixedly installed inside the piston body (1). Both ends of the connecting shaft (602) are provided with slots (603). Limiting springs (604) are fixedly installed inside the slots (603). Limiting rods (605) are fixedly installed on the outer ends of the limiting springs (604). Limiting caps (606) are fixedly installed on the outer ends of the limiting rods (605).

6. A car piston with a stroke rod according to claim 5, characterized in that: The limiting rod (605) is slidably connected inside the mounting block (601).

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